"""
Profile management for multiple isolated Hermes instances.

Each profile is a fully independent HERMES_HOME directory with its own
config.yaml, .env, memory, sessions, skills, gateway, cron, and logs.
Profiles live under ``~/.hermes/profiles/<name>/`` by default.

The "default" profile is ``~/.hermes`` itself — backward compatible,
zero migration needed.

Usage::

    hermes profile create coder          # fresh profile + bundled skills
    hermes profile create coder --clone  # also copy config, .env, SOUL.md, skills
    hermes profile create coder --clone-all  # full copy of source profile
    coder chat                           # use via wrapper alias
    hermes -p coder chat                 # or via flag
    hermes profile use coder             # set as sticky default
    hermes profile delete coder          # remove profile + alias + service
"""

import json
import os
import re
import shlex
import shutil
import stat
import subprocess
import sys
from dataclasses import dataclass
from pathlib import Path, PurePosixPath, PureWindowsPath
from typing import List, Optional, Tuple

from agent.skill_utils import is_excluded_skill_path

_PROFILE_ID_RE = re.compile(r"^[a-z0-9][a-z0-9_-]{0,63}$")

# Directories bootstrapped inside every new profile
_PROFILE_DIRS = [
    "memories",
    "sessions",
    "skills",
    "skins",
    "logs",
    "plans",
    "workspace",
    "cron",
    # Back-compat/Docker HOME for tool subprocesses. Host subprocesses keep
    # the user's real HOME by default so normal CLI credentials remain visible;
    # containers still use this directory for persistent HOME state.
    # See hermes_constants.get_subprocess_home().
    "home",
]

# Files copied during --clone (if they exist in the source)
_CLONE_CONFIG_FILES = [
    "config.yaml",
    ".env",
    "SOUL.md",
]

# Subdirectory files copied during --clone (path relative to profile root).
# Memory files are part of the agent's curated identity — just as important
# as SOUL.md for continuity when cloning a profile.
_CLONE_SUBDIR_FILES = [
    "memories/MEMORY.md",
    "memories/USER.md",
]

# Runtime files stripped after --clone-all (shouldn't carry over).
# Kept as a post-copy step rather than in the ignore filter because they
# are created dynamically during normal use and may be absent at copy time.
_CLONE_ALL_STRIP: list[str] = [
    "gateway.pid",
    "gateway_state.json",
    "processes.json",
]

# Infrastructure artifacts excluded from --clone-all when the source is the
# default profile (``~/.hermes``).  Named profiles never contain these
# directories at root, so the exclusion is gated to avoid silently dropping
# user data from a named-profile source.
#
# Rationale per item:
#   hermes-agent  — git repo checkout (~84 MB source + ~3 GB venv)
#   .worktrees    — git worktrees
#   profiles      — sibling named profiles (recursive copy never intended)
#   bin           — installed binaries (tirith etc., ~10 MB) shared per-host
#   node_modules  — npm packages (hundreds of MB)
#
# See ``_DEFAULT_EXPORT_EXCLUDE_ROOT`` below for the broader export-side
# exclusion list (export also drops logs / caches because the archive is a
# portable snapshot; clone-all keeps those because the cloned profile is
# meant to keep working immediately).
_CLONE_ALL_DEFAULT_EXCLUDE_ROOT: frozenset[str] = frozenset({
    "hermes-agent",
    ".worktrees",
    "profiles",
    "bin",
    "node_modules",
})

# Per-profile history artifacts excluded from --clone-all regardless of the
# source profile.  A new profile is a fresh workspace — inheriting the source
# profile's session history, backup archives, or quick-backup snapshots is
# never useful (restoring one inside the clone would resurrect the SOURCE
# profile's state) and can balloon the copy by tens of GB.  Unlike
# ``_CLONE_ALL_DEFAULT_EXCLUDE_ROOT`` this set is NOT gated on the default
# profile: named profiles accumulate the same artifacts.
#
# Rationale per item:
#   state.db (+wal/shm) — SQLite session store (can reach many GB)
#   sessions            — per-session transcript/data dirs
#   backups             — `hermes backup` archives
#   state-snapshots     — quick-backup snapshot trees
#   checkpoints         — session checkpoint data
_CLONE_ALL_HISTORY_EXCLUDE_ROOT: frozenset[str] = frozenset({
    "state.db",
    "state.db-wal",
    "state.db-shm",
    "sessions",
    "backups",
    "state-snapshots",
    "checkpoints",
})

# Marker file written by `hermes profile create --no-skills`.  When present in
# a profile's root, callers of seed_profile_skills() (fresh-create, `hermes
# update`'s all-profile sync, the web dashboard) skip bundled-skill seeding
# for that profile.  The user can still install skills manually via
# `hermes skills install` or drop SKILL.md files into the profile's skills/.
# Delete the marker file to opt back in.
NO_BUNDLED_SKILLS_MARKER = ".no-bundled-skills"


def has_bundled_skills_opt_out(profile_dir: Path) -> bool:
    """Return True if the profile opted out of bundled-skill seeding."""
    try:
        return (profile_dir / NO_BUNDLED_SKILLS_MARKER).exists()
    except OSError:
        return False


def _clone_all_copytree_ignore(source_dir: Path):
    """Exclude infrastructure artifacts when cloning a profile via --clone-all.

    Three categories:
      1. Root-level entries in ``_CLONE_ALL_HISTORY_EXCLUDE_ROOT`` — session
         history, backups, and snapshots that belong to the SOURCE profile
         and should never carry into a fresh clone.  Applies to any source.
      2. Root-level entries in ``_CLONE_ALL_DEFAULT_EXCLUDE_ROOT`` — known
         Hermes infrastructure directories that only the default profile
         (``~/.hermes``) ever contains.  Gated on ``source_dir`` actually
         being the default profile so a named-profile source never has its
         own data silently dropped.
      3. Universal exclusions at any depth — Python bytecode caches that
         are stale or regenerable (``__pycache__``, ``*.pyc``, ``*.pyo``)
         and runtime sockets / temp files (``*.sock``, ``*.tmp``).

    The export-side ignore (``_default_export_ignore``) uses the same
    two-tier pattern with the broader ``_DEFAULT_EXPORT_EXCLUDE_ROOT`` set
    because the export archive is a portable snapshot rather than a live
    clone.
    """
    source_resolved = source_dir.resolve()
    is_default_source = source_resolved == _get_default_hermes_home().resolve()

    def _ignore(directory: str, names: List[str]) -> List[str]:
        ignored: list[str] = []
        for entry in names:
            # Universal exclusions at any depth.
            if (
                entry == "__pycache__"
                or entry.endswith((".pyc", ".pyo", ".sock", ".tmp"))
            ):
                ignored.append(entry)
                continue
            try:
                at_root = Path(directory).resolve() == source_resolved
            except (OSError, ValueError):
                # ``resolve()`` can fail on unusual FS layouts (broken
                # symlinks, missing parents).  Fail open — better to
                # over-copy than silently drop user data.
                at_root = False
            if at_root:
                # History artifacts: excluded for ANY source profile.
                if entry in _CLONE_ALL_HISTORY_EXCLUDE_ROOT:
                    ignored.append(entry)
                    continue
                # Infrastructure: only the default profile contains these.
                if is_default_source and entry in _CLONE_ALL_DEFAULT_EXCLUDE_ROOT:
                    ignored.append(entry)
        return ignored

    return _ignore


# Directories/files to exclude when exporting the default (~/.hermes) profile.
# The default profile contains infrastructure (repo checkout, worktrees, DBs,
# caches, binaries) that named profiles don't have.  We exclude those so the
# export is a portable, reasonable-size archive of actual profile data.
_DEFAULT_EXPORT_EXCLUDE_ROOT = frozenset({
    # Infrastructure
    "hermes-agent",         # repo checkout (multi-GB)
    ".worktrees",           # git worktrees
    "profiles",             # other profiles — never recursive-export
    "bin",                  # installed binaries (tirith, etc.)
    "node_modules",         # npm packages
    # Databases & runtime state
    "state.db", "state.db-shm", "state.db-wal",
    "hermes_state.db",
    "response_store.db", "response_store.db-shm", "response_store.db-wal",
    "gateway.pid", "gateway_state.json", "processes.json",
    "auth.json",            # API keys, OAuth tokens, credential pools
    ".env",                 # API keys (dotenv)
    "auth.lock", "active_profile", ".update_check",
    "errors.log",
    ".hermes_history",
    # Caches (regenerated on use)
    "image_cache", "audio_cache", "document_cache",
    "browser_screenshots", "checkpoints",
    "sandboxes",
    "logs",                 # gateway logs
})

# Names that cannot be used as profile aliases
_RESERVED_NAMES = frozenset({
    "hermes", "default", "test", "tmp", "root", "sudo",
})

# Hermes subcommands that cannot be used as profile names/aliases
_HERMES_SUBCOMMANDS = frozenset({
    "chat", "model", "gateway", "setup", "whatsapp", "login", "logout",
    "status", "cron", "doctor", "dump", "config", "pairing", "skills", "tools",
    "mcp", "sessions", "insights", "version", "update", "uninstall",
    "profile", "plugins", "honcho", "acp",
})


# ---------------------------------------------------------------------------
# Path helpers
# ---------------------------------------------------------------------------

def _get_profiles_root() -> Path:
    """Return the directory where named profiles are stored.

    Anchored to the hermes root, NOT to the current HERMES_HOME
    (which may itself be a profile).  This ensures ``coder profile list``
    can see all profiles.

    In Docker/custom deployments where HERMES_HOME points outside
    ``~/.hermes``, profiles live under ``HERMES_HOME/profiles/`` so
    they persist on the mounted volume.
    """
    return _get_default_hermes_home() / "profiles"


def _get_default_hermes_home() -> Path:
    """Return the default (pre-profile) HERMES_HOME path.

    In standard deployments this is ``~/.hermes``.
    In Docker/custom deployments where HERMES_HOME is outside ``~/.hermes``
    (e.g. ``/opt/data``), returns HERMES_HOME directly.
    """
    from hermes_constants import get_default_hermes_root
    return get_default_hermes_root()


def _get_active_profile_path() -> Path:
    """Return the path to the sticky active_profile file."""
    return _get_default_hermes_home() / "active_profile"


def _get_wrapper_dir() -> Path:
    """Return the directory for wrapper scripts."""
    return Path.home() / ".local" / "bin"


# ---------------------------------------------------------------------------
# Validation
# ---------------------------------------------------------------------------

def normalize_profile_name(name: str) -> str:
    """Return the canonical profile id used on disk and in CLI ``-p`` argv.

    Named profiles are stored lowercase under ``profiles/<id>/``. The special
    alias ``default`` is matched case-insensitively (``Default`` → ``default``).
    Dashboards and tools may pass title-cased display labels; normalize before
    validation, assignment, and subprocess spawn (see issue #18498).
    """
    if not isinstance(name, str):
        name = str(name)
    stripped = name.strip()
    if not stripped:
        raise ValueError("profile name cannot be empty")
    if stripped.casefold() == "default":
        return "default"
    return stripped.lower()


def validate_profile_name(name: str) -> None:
    """Raise ``ValueError`` if *name* is not a valid profile identifier.

    Validates the input as-given — strict lowercase match. Callers that accept
    mixed-case or title-cased input from users (dashboard UI, CLI args) should
    call :func:`normalize_profile_name` first. This separation keeps validate
    honest about what the on-disk directory name must look like, while
    ingress-point normalization handles UX flexibility (see #18498).

    Also rejects names in :data:`_RESERVED_NAMES` (``hermes``, ``test``,
    ``tmp``, ``root``, ``sudo``) that would create confusing on-disk
    collisions (a ``hermes`` profile inside ``~/.hermes/``) or get refused
    at alias-creation time anyway. ``default`` is a special pass-through —
    it's a valid alias for the built-in root profile.
    """
    if name == "default":
        return  # special alias for ~/.hermes
    if not _PROFILE_ID_RE.match(name):
        raise ValueError(
            f"Invalid profile name {name!r}. Must match "
            f"[a-z0-9][a-z0-9_-]{{0,63}}"
        )
    if name in _RESERVED_NAMES:
        raise ValueError(
            f"Profile name {name!r} is reserved — it collides with either "
            f"the Hermes installation itself or a common system binary.  "
            f"Pick a different name."
        )


def get_profile_dir(name: str) -> Path:
    """Resolve a profile name to its HERMES_HOME directory."""
    canon = normalize_profile_name(name)
    if canon == "default":
        return _get_default_hermes_home()
    return _get_profiles_root() / canon


def profile_exists(name: str) -> bool:
    """Check whether a profile directory exists."""
    canon = normalize_profile_name(name)
    if canon == "default":
        return True
    return get_profile_dir(canon).is_dir()


# ---------------------------------------------------------------------------
# Alias / wrapper script management
# ---------------------------------------------------------------------------

def check_alias_collision(name: str) -> Optional[str]:
    """Return a human-readable collision message, or None if the name is safe.

    Checks: reserved names, hermes subcommands, existing binaries in PATH.
    """
    canon = normalize_profile_name(name)
    if canon in _RESERVED_NAMES:
        return f"'{canon}' is a reserved name"
    if canon in _HERMES_SUBCOMMANDS:
        return f"'{canon}' conflicts with a hermes subcommand"

    # Check existing commands in PATH
    wrapper_dir = _get_wrapper_dir()
    is_windows = sys.platform == "win32"
    try:
        result = subprocess.run(
            ["where" if is_windows else "which", canon],
            capture_output=True, text=True, timeout=5,
        )
        if result.returncode == 0:
            existing_path = result.stdout.strip().splitlines()[0]
            # Allow overwriting our own wrappers
            expected = wrapper_dir / (f"{canon}.bat" if is_windows else canon)
            if existing_path == str(expected):
                try:
                    content = expected.read_text()
                    if "hermes -p" in content:
                        return None  # it's our wrapper, safe to overwrite
                except Exception:
                    pass
            return f"'{canon}' conflicts with an existing command ({existing_path})"
    except (FileNotFoundError, subprocess.TimeoutExpired):
        pass

    return None  # safe


def _is_wrapper_dir_in_path() -> bool:
    """Check if ~/.local/bin is in PATH."""
    wrapper_dir = str(_get_wrapper_dir())
    return wrapper_dir in os.environ.get("PATH", "").split(os.pathsep)


def create_wrapper_script(name: str, target: Optional[str] = None) -> Optional[Path]:
    """Create a shell wrapper script at ~/.local/bin/<name>.

    The wrapper file is named after ``name`` (the alias). The profile it
    activates is ``target`` if given, otherwise ``name`` — this lets a custom
    alias name point at a differently-named profile without a post-hoc rewrite.

    On Windows, creates a ``.bat`` file instead of a POSIX shell script.
    Returns the path to the created wrapper, or None if creation failed.
    """
    canon = normalize_profile_name(name)
    profile = normalize_profile_name(target) if target else canon
    wrapper_dir = _get_wrapper_dir()
    try:
        wrapper_dir.mkdir(parents=True, exist_ok=True)
    except OSError as e:
        print(f"⚠ Could not create {wrapper_dir}: {e}")
        return None

    is_windows = sys.platform == "win32"
    if is_windows:
        wrapper_path = wrapper_dir / f"{canon}.bat"
        try:
            wrapper_path.write_text(f"@echo off\r\nhermes -p {profile} %*\r\n")
            return wrapper_path
        except OSError as e:
            print(f"⚠ Could not create wrapper at {wrapper_path}: {e}")
            return None
    else:
        wrapper_path = wrapper_dir / canon
        try:
            hermes_exe = shutil.which("hermes") or "hermes"
            wrapper_path.write_text(f'#!/bin/sh\nexec {shlex.quote(hermes_exe)} -p {profile} "$@"\n')
            wrapper_path.chmod(wrapper_path.stat().st_mode | stat.S_IEXEC | stat.S_IXGRP | stat.S_IXOTH)
            return wrapper_path
        except OSError as e:
            print(f"⚠ Could not create wrapper at {wrapper_path}: {e}")
            return None


def remove_wrapper_script(name: str) -> bool:
    """Remove the wrapper script for a profile. Returns True if removed."""
    wrapper_dir = _get_wrapper_dir()
    canon = normalize_profile_name(name)
    is_windows = sys.platform == "win32"

    # Check both the extensionless path (POSIX) and .bat (Windows)
    candidates = [wrapper_dir / canon]
    if is_windows:
        candidates.insert(0, wrapper_dir / f"{canon}.bat")

    for wrapper_path in candidates:
        if wrapper_path.exists():
            try:
                # Verify it's our wrapper before removing
                content = wrapper_path.read_text()
                if "hermes -p" in content:
                    wrapper_path.unlink()
                    return True
            except Exception:
                pass
    return False


def _migrate_profile_config_if_outdated(profile_dir: Path) -> None:
    """Bring a copied profile config.yaml up to the current schema.

    Profile creation can clone a config file that predates schema tracking (no
    ``_config_version``) or that is simply older than the running Hermes. If we
    leave it untouched, the first desktop/doctor view of the new profile shows a
    scary ``v0 → latest`` warning even though we just created the profile. Scope
    the normal migration pipeline to the new profile and keep it non-interactive.
    """
    config_path = profile_dir / "config.yaml"
    if not config_path.exists():
        return

    try:
        from hermes_constants import reset_hermes_home_override, set_hermes_home_override
        from hermes_cli.config import check_config_version, migrate_config

        token = set_hermes_home_override(str(profile_dir))
        try:
            current_ver, latest_ver = check_config_version()
            if current_ver < latest_ver:
                migrate_config(interactive=False, quiet=True)
        finally:
            reset_hermes_home_override(token)
    except Exception:
        # Profile creation should not fail because an old copied config could
        # not be migrated. The next `hermes doctor --fix` can still surface the
        # detailed error in the target profile.
        pass


def find_alias_for_profile(profile_name: str) -> Optional[str]:
    """Return the alias name of the wrapper that activates *profile_name*, or None.

    A wrapper created by :func:`create_wrapper_script` is a file named after the
    alias whose body invokes ``hermes -p <profile>``. When the alias name equals
    the profile name this is trivial, but a custom alias (``hermes profile alias
    <profile> --name <custom>``) produces a differently-named file — so the
    display side cannot assume ``wrapper == profile`` and must reverse-look-up.

    A custom alias (name != profile) is preferred over the profile-named wrapper
    so ``profile list``/``show`` surface the command the user actually typed.
    Results are sorted for deterministic output when several aliases match.
    """
    wrapper_dir = _get_wrapper_dir()
    if not wrapper_dir.is_dir():
        return None
    canon = normalize_profile_name(profile_name)
    is_windows = sys.platform == "win32"
    needle = f"hermes -p {canon}"

    custom: Optional[str] = None
    profile_named: Optional[str] = None
    for entry in sorted(wrapper_dir.iterdir()):
        if not entry.is_file():
            continue
        # Only our own wrappers are named with the alias and (on Windows) .bat.
        if is_windows and entry.suffix != ".bat":
            continue
        if not is_windows and entry.suffix:
            continue
        try:
            content = entry.read_text()
        except (OSError, UnicodeDecodeError):
            continue
        if needle not in content:
            continue
        alias = entry.stem if is_windows else entry.name
        if alias == canon:
            profile_named = alias
        elif custom is None:
            custom = alias
    return custom if custom is not None else profile_named


# ---------------------------------------------------------------------------
# ProfileInfo
# ---------------------------------------------------------------------------

@dataclass
class ProfileInfo:
    """Summary information about a profile."""
    name: str
    path: Path
    is_default: bool
    gateway_running: bool
    model: Optional[str] = None
    provider: Optional[str] = None
    has_env: bool = False
    skill_count: int = 0
    alias_path: Optional[Path] = None
    # Custom alias name (the wrapper file name) when it differs from ``name``;
    # falls back to ``name`` when a profile-named wrapper exists. None if no
    # wrapper points at this profile. See ``find_alias_for_profile``.
    alias_name: Optional[str] = None
    # Distribution metadata (None if the profile wasn't installed from a distribution).
    distribution_name: Optional[str] = None
    distribution_version: Optional[str] = None
    distribution_source: Optional[str] = None
    # Free-form description (1-2 sentences) of what this profile is good
    # at. Persisted in ``<profile_dir>/profile.yaml``. Empty when the
    # user has not described the profile (legacy profiles, fresh
    # installs). Surfaced to the kanban decomposer so it can route work
    # to the right profile based on role rather than name alone.
    description: str = ""
    # When True, ``description`` was auto-generated by the LLM
    # describer and has not been confirmed by the user. The dashboard
    # surfaces a "review" badge in this case so the user can edit or
    # accept.
    description_auto: bool = False


def _read_distribution_meta(profile_dir: Path) -> tuple:
    """Return ``(name, version, source)`` from the profile's ``distribution.yaml``
    if present; ``(None, None, None)`` otherwise.

    Failures (missing file, bad YAML) are swallowed — a bad manifest should
    never break ``hermes profile list`` for an unrelated profile.
    """
    mf_path = profile_dir / "distribution.yaml"
    if not mf_path.is_file():
        return None, None, None
    try:
        import yaml
        with open(mf_path, "r", encoding="utf-8") as f:
            data = yaml.safe_load(f) or {}
        if not isinstance(data, dict):
            return None, None, None
        return (
            data.get("name"),
            data.get("version"),
            data.get("source"),
        )
    except Exception:
        return None, None, None


def _read_config_model(profile_dir: Path) -> tuple:
    """Read model/provider from a profile's config.yaml. Returns (model, provider)."""
    config_path = profile_dir / "config.yaml"
    if not config_path.exists():
        return None, None
    try:
        import yaml
        with open(config_path, "r", encoding="utf-8") as f:
            cfg = yaml.safe_load(f) or {}
        model_cfg = cfg.get("model", {})
        if isinstance(model_cfg, str):
            return model_cfg, None
        if isinstance(model_cfg, dict):
            return model_cfg.get("default") or model_cfg.get("model"), model_cfg.get("provider")
        return None, None
    except Exception:
        return None, None


def _check_gateway_running(profile_dir: Path) -> bool:
    """Check if a gateway is running for a given profile directory."""
    try:
        from gateway.status import get_running_pid
        return get_running_pid(profile_dir / "gateway.pid", cleanup_stale=False) is not None
    except Exception:
        return False


def _count_skills(profile_dir: Path) -> int:
    """Count installed skills in a profile."""
    skills_dir = profile_dir / "skills"
    if not skills_dir.is_dir():
        return 0
    count = 0
    for md in skills_dir.rglob("SKILL.md"):
        if is_excluded_skill_path(md):
            continue
        count += 1
    return count


# ---------------------------------------------------------------------------
# profile.yaml — per-profile metadata (description, role, etc.)
# ---------------------------------------------------------------------------
#
# We keep this file deliberately tiny and separate from the profile's
# ``config.yaml``. ``config.yaml`` is the user-facing Hermes config
# (~5000 lines of defaults); ``profile.yaml`` is metadata ABOUT the
# profile itself (its role, who described it). Mixing them makes both
# harder to read.
#
# Missing file -> empty defaults; never an error. The kanban decomposer
# tolerates empty descriptions and just falls back to the profile name.


def _profile_yaml_path(profile_dir: Path) -> Path:
    return profile_dir / "profile.yaml"


def read_profile_meta(profile_dir: Path) -> dict:
    """Read ``<profile_dir>/profile.yaml`` and return a dict.

    Returns ``{"description": "", "description_auto": False}`` when the
    file is missing or unreadable. Never raises — a corrupt
    profile.yaml on an unrelated profile must not break
    ``hermes profile list``.
    """
    path = _profile_yaml_path(profile_dir)
    if not path.is_file():
        return {"description": "", "description_auto": False}
    try:
        import yaml
        with open(path, "r", encoding="utf-8") as f:
            data = yaml.safe_load(f) or {}
    except Exception:
        return {"description": "", "description_auto": False}
    if not isinstance(data, dict):
        return {"description": "", "description_auto": False}
    return {
        "description": str(data.get("description") or "").strip(),
        "description_auto": bool(data.get("description_auto", False)),
    }


def write_profile_meta(
    profile_dir: Path,
    *,
    description: Optional[str] = None,
    description_auto: Optional[bool] = None,
) -> None:
    """Update ``<profile_dir>/profile.yaml`` in place.

    Only the explicitly passed fields are overwritten; unspecified
    fields preserve existing values. Creates the file if missing.
    Profile directory itself must exist.
    """
    if not profile_dir.is_dir():
        raise FileNotFoundError(f"profile directory does not exist: {profile_dir}")
    import yaml
    path = _profile_yaml_path(profile_dir)
    existing: dict = {}
    if path.is_file():
        try:
            with open(path, "r", encoding="utf-8") as f:
                loaded = yaml.safe_load(f) or {}
            if isinstance(loaded, dict):
                existing = loaded
        except Exception:
            existing = {}
    if description is not None:
        existing["description"] = description.strip()
    if description_auto is not None:
        existing["description_auto"] = bool(description_auto)
    with open(path, "w", encoding="utf-8") as f:
        yaml.safe_dump(existing, f, sort_keys=False, default_flow_style=False)


# ---------------------------------------------------------------------------
# CRUD operations
# ---------------------------------------------------------------------------

def list_profiles() -> List[ProfileInfo]:
    """Return info for all profiles, including the default."""
    profiles = []
    wrapper_dir = _get_wrapper_dir()

    # Default profile
    default_home = _get_default_hermes_home()
    if default_home.is_dir():
        model, provider = _read_config_model(default_home)
        dist_name, dist_version, dist_source = _read_distribution_meta(default_home)
        meta = read_profile_meta(default_home)
        profiles.append(ProfileInfo(
            name="default",
            path=default_home,
            is_default=True,
            gateway_running=_check_gateway_running(default_home),
            model=model,
            provider=provider,
            has_env=(default_home / ".env").exists(),
            skill_count=_count_skills(default_home),
            distribution_name=dist_name,
            distribution_version=dist_version,
            distribution_source=dist_source,
            description=meta.get("description", ""),
            description_auto=meta.get("description_auto", False),
        ))

    # Named profiles
    profiles_root = _get_profiles_root()
    if profiles_root.is_dir():
        for entry in sorted(profiles_root.iterdir()):
            if not entry.is_dir():
                continue
            name = entry.name
            if name == "default":
                continue  # already added as the built-in default above
            if not _PROFILE_ID_RE.match(name):
                continue
            model, provider = _read_config_model(entry)
            alias_name = find_alias_for_profile(name)
            if alias_name:
                is_windows = sys.platform == "win32"
                alias_path = wrapper_dir / (f"{alias_name}.bat" if is_windows else alias_name)
            else:
                alias_path = None
            dist_name, dist_version, dist_source = _read_distribution_meta(entry)
            meta = read_profile_meta(entry)
            profiles.append(ProfileInfo(
                name=name,
                path=entry,
                is_default=False,
                gateway_running=_check_gateway_running(entry),
                model=model,
                provider=provider,
                has_env=(entry / ".env").exists(),
                skill_count=_count_skills(entry),
                alias_path=alias_path if (alias_path and alias_path.exists()) else None,
                alias_name=alias_name,
                distribution_name=dist_name,
                distribution_version=dist_version,
                distribution_source=dist_source,
                description=meta.get("description", ""),
                description_auto=meta.get("description_auto", False),
            ))

    return profiles


def profiles_to_serve(multiplex: bool) -> List[Tuple[str, Path]]:
    """Return the ``(profile_name, hermes_home)`` pairs a gateway should serve.

    This is the single chokepoint for "which profiles does the inbound gateway
    handle" so later multiplexing phases never re-derive the set.

    - ``multiplex=False`` (default): returns exactly one entry for the *active*
      profile — byte-for-byte the single-profile behavior the gateway has
      always had. The name is ``"default"`` for the default profile or the
      active named profile's id.
    - ``multiplex=True``: returns the default profile plus every valid named
      profile under ``profiles/``, each paired with its own HERMES_HOME.

    Intentionally lightweight (a directory scan + name validation only): no
    per-profile config reads, gateway-running probes, or skill counts like
    :func:`list_profiles`. It runs on gateway startup and must stay cheap.

    The returned ``hermes_home`` is the path to pass to
    ``set_hermes_home_override`` when scoping a turn to that profile.
    """
    active = get_active_profile_name() or "default"
    if not multiplex:
        return [(active, get_profile_dir(active))]

    serve: List[Tuple[str, Path]] = [("default", _get_default_hermes_home())]

    profiles_root = _get_profiles_root()
    if profiles_root.is_dir():
        for entry in sorted(profiles_root.iterdir()):
            if not entry.is_dir():
                continue
            name = entry.name
            if name == "default":
                continue  # default is the built-in entry already added above
            if not _PROFILE_ID_RE.match(name):
                continue
            serve.append((name, entry))

    return serve


def create_profile(
    name: str,
    clone_from: Optional[str] = None,
    clone_all: bool = False,
    clone_config: bool = False,
    no_alias: bool = False,
    no_skills: bool = False,
    description: Optional[str] = None,
) -> Path:
    """Create a new profile directory.

    Parameters
    ----------
    name:
        Profile identifier (lowercase, alphanumeric, hyphens, underscores).
    clone_from:
        Source profile to clone from. If ``None`` and clone_config/clone_all
        is True, defaults to the currently active profile.
    clone_all:
        If True, do a full copytree of the source (all state).
    clone_config:
        If True, copy config files (config.yaml, .env, SOUL.md), installed
        skills, and selected profile identity files from the source profile.
    no_alias:
        If True, skip wrapper script creation.
    no_skills:
        If True, create an empty profile with no bundled skills, and write
        a marker file so ``hermes update`` skips re-seeding this profile's
        skills. Mutually exclusive with ``clone_config``/``clone_all`` (those
        explicitly copy skills from the source).

    Returns
    -------
    Path
        The newly created profile directory.
    """
    if no_skills and (clone_from is not None or clone_config or clone_all):
        raise ValueError(
            "--no-skills is mutually exclusive with --clone / --clone-from / --clone-all "
            "(cloning explicitly copies skills from the source profile)."
        )
    canon = normalize_profile_name(name)
    validate_profile_name(canon)

    if canon == "default":
        raise ValueError(
            "Cannot create a profile named 'default' — it is the built-in profile (~/.hermes)."
        )

    profile_dir = get_profile_dir(canon)
    if profile_dir.exists():
        raise FileExistsError(f"Profile '{canon}' already exists at {profile_dir}")

    # Resolve clone source
    source_dir = None
    if clone_from is not None or clone_all or clone_config:
        if clone_from is None:
            # Default: clone from active profile
            from hermes_constants import get_hermes_home
            source_dir = get_hermes_home()
        else:
            clone_from = normalize_profile_name(clone_from)
            validate_profile_name(clone_from)
            source_dir = get_profile_dir(clone_from)
        if not source_dir.is_dir():
            raise FileNotFoundError(
                f"Source profile '{clone_from or 'active'}' does not exist at {source_dir}"
            )

    if clone_all and source_dir:
        # Full copy of source profile (exclude sibling ~/.hermes/profiles/)
        shutil.copytree(
            source_dir,
            profile_dir,
            ignore=_clone_all_copytree_ignore(source_dir),
        )
        # Strip runtime files
        for stale in _CLONE_ALL_STRIP:
            (profile_dir / stale).unlink(missing_ok=True)
    else:
        # Bootstrap directory structure
        profile_dir.mkdir(parents=True, exist_ok=True)
        for subdir in _PROFILE_DIRS:
            (profile_dir / subdir).mkdir(parents=True, exist_ok=True)

        # Clone config files from source
        if source_dir is not None:
            for filename in _CLONE_CONFIG_FILES:
                src = source_dir / filename
                if src.exists():
                    dst = profile_dir / filename
                    shutil.copy2(src, dst)
                    # Tighten .env to owner-only after copy. shutil.copy2
                    # preserves source mode bits, but if the source's .env
                    # was loose (host umask 0o022 leaving 0o644), tighten
                    # explicitly so the clone doesn't inherit weak perms.
                    if filename == ".env":
                        try:
                            os.chmod(str(dst), 0o600)
                        except OSError:
                            pass

            # Clone installed skills from the source profile. The dashboard's
            # "clone from default" flow is expected to preserve both bundled
            # and user-installed skills so the new profile immediately has the
            # same agent capabilities as the source profile.
            source_skills = source_dir / "skills"
            if source_skills.is_dir():
                shutil.copytree(source_skills, profile_dir / "skills", dirs_exist_ok=True)

            # Clone memory and other subdirectory files
            for relpath in _CLONE_SUBDIR_FILES:
                src = source_dir / relpath
                if src.exists():
                    dst = profile_dir / relpath
                    dst.parent.mkdir(parents=True, exist_ok=True)
                    shutil.copy2(src, dst)

    # Seed an empty .env so the profile has its own credentials file from
    # day one. Without it, profile-scoped env writes (dashboard Channels /
    # Keys pages, `hermes -p <name> auth add`) had no file until first
    # write, and the profile silently inherited API keys from the shell
    # environment — users reasonably read that as "the new profile reads
    # the root .env". Skipped when --clone/--clone-all already copied one.
    env_path = profile_dir / ".env"
    if not env_path.exists():
        try:
            env_path.write_text(
                "# Per-profile secrets for this Hermes profile.\n"
                "# API keys and tokens set here override the shell environment.\n"
                "# Behavioral settings belong in config.yaml, not here.\n",
                encoding="utf-8",
            )
            os.chmod(str(env_path), 0o600)
        except OSError:
            pass  # best-effort — save_env_value creates the file on demand

    # Seed a default SOUL.md so the user has a file to customize immediately.
    # Skipped when the profile already has one (from --clone / --clone-all).
    soul_path = profile_dir / "SOUL.md"
    if not soul_path.exists():
        try:
            from hermes_cli.default_soul import DEFAULT_SOUL_MD
            soul_path.write_text(DEFAULT_SOUL_MD, encoding="utf-8")
        except Exception:
            pass  # best-effort — don't fail profile creation over this

    # Write the opt-out marker so seed_profile_skills() and `hermes update`'s
    # all-profile sync loop both skip this profile for bundled-skill seeding.
    if no_skills:
        try:
            (profile_dir / NO_BUNDLED_SKILLS_MARKER).write_text(
                "This profile opted out of bundled-skill seeding "
                "(`hermes profile create --no-skills`).\n"
                "Delete this file to re-enable sync on the next `hermes update`.\n",
                encoding="utf-8",
            )
        except OSError:
            pass  # best-effort — the feature still works via the empty skills/ dir

    # Cloned configs can be older than the running Hermes (or predate schema
    # tracking entirely). Migrate config-only clones immediately so
    # desktop/status surfaces don't warn that a just-created profile is
    # v0/outdated. Leave --clone-all snapshots byte-for-byte apart from the
    # explicit runtime/history stripping above.
    if not clone_all:
        _migrate_profile_config_if_outdated(profile_dir)

    # Persist description if the caller provided one. Done last so a
    # partial-create failure doesn't strand a description file in an
    # incomplete profile.
    if description and description.strip():
        try:
            write_profile_meta(
                profile_dir,
                description=description.strip(),
                description_auto=False,
            )
        except Exception:
            pass  # non-fatal — user can describe later with `hermes profile describe`

    # Phase 4: when running inside a container under s6, register the
    # new profile's gateway as a runtime s6 service so
    # `hermes -p <profile> gateway start` can supervise it via
    # `s6-svc -u` instead of spawning a bare process. On host (systemd
    # / launchd / windows) this is a no-op — the existing per-profile
    # unit-generation paths handle gateway lifecycle.
    _maybe_register_gateway_service(canon)

    return profile_dir


def seed_profile_skills(profile_dir: Path, quiet: bool = False) -> Optional[dict]:
    """Seed bundled skills into a profile via subprocess.

    Uses subprocess because sync_skills() caches HERMES_HOME at module level.
    Returns the sync result dict, or None on failure.

    Profiles that opted out of bundled skills (via ``hermes profile create
    --no-skills`` — which writes ``.no-bundled-skills`` to the profile root)
    are skipped and get an empty-result dict so callers can report
    "opted out" instead of "failed".
    """
    if has_bundled_skills_opt_out(profile_dir):
        return {
            "copied": [],
            "updated": [],
            "user_modified": [],
            "skipped_opt_out": True,
        }
    project_root = Path(__file__).parent.parent.resolve()
    try:
        result = subprocess.run(
            [sys.executable, "-c",
             "import json; from tools.skills_sync import sync_skills; "
             "r = sync_skills(quiet=True); print(json.dumps(r))"],
            env={**os.environ, "HERMES_HOME": str(profile_dir)},
            cwd=str(project_root),
            capture_output=True, text=True, timeout=60,
        )
        if result.returncode == 0 and result.stdout.strip():
            return json.loads(result.stdout.strip())
        if not quiet:
            print(f"⚠ Skill seeding returned exit code {result.returncode}")
            if result.stderr.strip():
                print(f"  {result.stderr.strip()[:200]}")
        return None
    except subprocess.TimeoutExpired:
        if not quiet:
            print("⚠ Skill seeding timed out (60s)")
        return None
    except Exception as e:
        if not quiet:
            print(f"⚠ Skill seeding failed: {e}")
        return None


def backfill_profile_envs(quiet: bool = False) -> List[str]:
    """Give every named profile that predates per-profile ``.env`` files one.

    Profiles created before the dashboard/CLI started seeding a ``.env``
    (PR #44792) have none, so once the Channels/Keys endpoints became
    profile-scoped those profiles stopped inheriting the root install's
    credentials and showed everything as unconfigured. To avoid breaking
    anyone on update, copy the DEFAULT install's ``.env`` into each named
    profile that lacks one — that preserves the effective credentials those
    profiles were already running with (they previously read the root
    ``.env`` via the process environment). Users can then diverge per
    profile from there.

    Falls back to the placeholder header when the default install has no
    ``.env`` itself. Never overwrites an existing profile ``.env``.

    Returns the list of profile names that received a backfilled ``.env``.
    """
    backfilled: List[str] = []
    profiles_root = _get_profiles_root()
    if not profiles_root.is_dir():
        return backfilled

    default_env = _get_default_hermes_home() / ".env"

    for entry in sorted(profiles_root.iterdir()):
        if not entry.is_dir() or not _PROFILE_ID_RE.match(entry.name):
            continue
        if entry.name == "default":
            continue
        env_path = entry / ".env"
        if env_path.exists():
            continue
        try:
            if default_env.is_file():
                shutil.copy2(default_env, env_path)
            else:
                env_path.write_text(
                    "# Per-profile secrets for this Hermes profile.\n"
                    "# API keys and tokens set here override the shell environment.\n"
                    "# Behavioral settings belong in config.yaml, not here.\n",
                    encoding="utf-8",
                )
            os.chmod(str(env_path), 0o600)
            backfilled.append(entry.name)
        except OSError as e:
            if not quiet:
                print(f"⚠ Could not seed .env for profile '{entry.name}': {e}")

    return backfilled


def delete_profile(name: str, yes: bool = False) -> Path:
    """Delete a profile, its wrapper script, and its gateway service.

    Stops the gateway if running. Disables systemd/launchd service first
    to prevent auto-restart.

    Returns the path that was removed.
    """
    canon = normalize_profile_name(name)
    validate_profile_name(canon)

    if canon == "default":
        raise ValueError(
            "Cannot delete the default profile (~/.hermes).\n"
            "To remove everything, use: hermes uninstall"
        )

    profile_dir = get_profile_dir(canon)
    if not profile_dir.is_dir():
        raise FileNotFoundError(f"Profile '{canon}' does not exist.")

    # Show what will be deleted
    model, provider = _read_config_model(profile_dir)
    gw_running = _check_gateway_running(profile_dir)
    skill_count = _count_skills(profile_dir)
    dist_name, dist_version, dist_source = _read_distribution_meta(profile_dir)

    print(f"\nProfile: {canon}")
    print(f"Path:    {profile_dir}")
    if model:
        print(f"Model:   {model}" + (f" ({provider})" if provider else ""))
    if skill_count:
        print(f"Skills:  {skill_count}")
    if dist_name:
        print(f"Distribution: {dist_name}@{dist_version or '?'}")
        if dist_source:
            print(f"Installed from: {dist_source}")

    items = [
        "All config, API keys, memories, sessions, skills, cron jobs",
    ]

    # Check for service
    wrapper_path = _get_wrapper_dir() / canon
    has_wrapper = wrapper_path.exists()
    if has_wrapper:
        items.append(f"Command alias ({wrapper_path})")

    print(f"\nThis will permanently delete:")
    for item in items:
        print(f"  • {item}")
    if gw_running:
        print(f"  ⚠ Gateway is running — it will be stopped.")

    # Confirmation
    if not yes:
        print()
        try:
            confirm = input(f"Type '{canon}' to confirm: ").strip()
        except (KeyboardInterrupt, EOFError):
            print("\nCancelled.")
            return profile_dir
        if confirm != canon:
            print("Cancelled.")
            return profile_dir

    # 1. Disable service (prevents auto-restart)
    _cleanup_gateway_service(canon, profile_dir)
    # 1b. Phase 4: unregister the s6 service slot (container path).
    # On host this is a no-op; on container it removes
    # /run/service/gateway-<profile>/ so s6-supervise drops it.
    _maybe_unregister_gateway_service(canon)

    # 2. Stop running gateway
    if gw_running:
        _stop_gateway_process(profile_dir)

    # 3. Remove wrapper script
    if has_wrapper:
        if remove_wrapper_script(canon):
            print(f"✓ Removed {wrapper_path}")

    # 4. Remove profile directory
    remove_error: Exception | None = None
    try:
        def _make_writable(func, path, exc):
            """onexc/onerror handler: add +w on PermissionError so rmtree can proceed.

            Handles two cases on NixOS (and other systems with read-only
            copies from immutable stores):
            1. The path itself isn't writable (e.g. a file with mode 0444)
            2. The *parent* directory isn't writable (e.g. mode 0555)

            Compatible with both the ``onexc`` API (3.12+, receives an
            exception instance) and the ``onerror`` API (3.11-, receives
            ``sys.exc_info()`` tuple).
            """
            import stat as _stat

            # Normalise the two callback signatures:
            #   onexc(func, path, exc_instance)   — 3.12+
            #   onerror(func, path, exc_info_tuple) — 3.11
            if isinstance(exc, tuple):
                exc = exc[1]  # exc_info → actual exception object

            if isinstance(exc, PermissionError):
                # Make the path writable
                try:
                    os.chmod(path, os.stat(path).st_mode | _stat.S_IWUSR)
                except OSError:
                    pass
                # Also make the parent writable (needed for unlink/rmdir)
                parent = os.path.dirname(path)
                if parent:
                    try:
                        os.chmod(parent, os.stat(parent).st_mode | _stat.S_IWUSR)
                    except OSError:
                        pass
                func(path)
            else:
                raise

        # ``onexc`` was added in 3.12; fall back to ``onerror`` on 3.11.
        try:
            shutil.rmtree(profile_dir, onexc=_make_writable)
        except TypeError:
            shutil.rmtree(profile_dir, onerror=_make_writable)
        print(f"✓ Removed {profile_dir}")
    except Exception as e:
        print(f"⚠ Could not remove {profile_dir}: {e}")
        remove_error = e

    # 5. Clear active_profile if it pointed to this profile
    try:
        active = get_active_profile()
        if active == canon:
            set_active_profile("default")
            print("✓ Active profile reset to default")
    except Exception:
        pass

    if remove_error is not None:
        raise RuntimeError(f"Could not remove profile directory {profile_dir}: {remove_error}") from remove_error

    print(f"\nProfile '{canon}' deleted.")
    return profile_dir


def _maybe_register_gateway_service(profile_name: str) -> None:
    """Register a profile's gateway with s6 inside the container.

    No-op on host (systemd/launchd/windows) — those backends raise
    ``NotImplementedError`` on ``register_profile_gateway`` and the
    existing per-profile unit-generation paths handle lifecycle.

    Best-effort: any error (no backend detected, s6 not yet ready,
    etc.) is logged and swallowed so profile creation doesn't fail
    because the s6 supervision tree is in a weird state. The user
    can re-register manually later via the gateway start command,
    which goes through the same dispatch path.

    Port selection: each supervised profile gateway loads its own
    ``HERMES_HOME`` and binds the port resolved by ``gateway/config.py``
    from that profile's environment — ``API_SERVER_PORT`` (or
    ``platforms.api_server.extra.port`` in the profile's
    ``config.yaml``), defaulting to 8642. There is no ``[gateway] port``
    key and no Python-side allocator (PR #30136 review item I5 retired
    the SHA-256-derived range [9200, 9800) as dead code), so two
    profiles that both leave the port at its default will both try to
    bind 8642 — give each profile a distinct ``API_SERVER_PORT`` in its
    ``.env``.

    Host short-circuit: check ``detect_service_manager()`` first and
    return immediately if it isn't ``"s6"``. This keeps host
    (systemd/launchd/windows) profile creation completely silent —
    no ``get_service_manager()`` call, no exception path, no chance
    of the ``⚠ Could not register s6 gateway service`` warning ever
    rendering on a non-container machine. The earlier
    ``supports_runtime_registration()`` check still catches the case
    where detection somehow returns ``"s6"`` but the backend isn't
    actually the S6 one.
    """
    try:
        from hermes_cli.service_manager import detect_service_manager
        if detect_service_manager() != "s6":
            return  # host path — silent, no registration needed
        from hermes_cli.service_manager import get_service_manager
        mgr = get_service_manager()
    except RuntimeError:
        return  # no backend on this host — nothing to do
    except Exception:
        # Defensive: detect_service_manager failed for some other
        # reason. Stay silent on host rather than printing a confusing
        # s6 warning to users who have never touched the container.
        return
    if not mgr.supports_runtime_registration():
        return  # host backend; no-op
    try:
        mgr.register_profile_gateway(profile_name, start_now=False)
    except ValueError:
        # Already registered (e.g. the container-boot reconciler ran
        # first and brought up a stale slot). That's fine.
        pass
    except Exception as exc:
        # Don't fail profile create over a supervision-tree hiccup.
        print(f"⚠ Could not register s6 gateway service: {exc}")


def _maybe_unregister_gateway_service(profile_name: str) -> None:
    """Tear down a profile's s6 gateway service inside the container.

    No-op on host. Idempotent: absent services are silently skipped
    by ``unregister_profile_gateway``.

    Same host short-circuit as :func:`_maybe_register_gateway_service`
    — see that docstring.
    """
    try:
        from hermes_cli.service_manager import detect_service_manager
        if detect_service_manager() != "s6":
            return  # host path — silent
        from hermes_cli.service_manager import get_service_manager
        mgr = get_service_manager()
    except RuntimeError:
        return
    except Exception:
        return
    if not mgr.supports_runtime_registration():
        return
    try:
        mgr.unregister_profile_gateway(profile_name)
    except Exception as exc:
        print(f"⚠ Could not unregister s6 gateway service: {exc}")


def _cleanup_gateway_service(name: str, profile_dir: Path) -> None:
    """Disable and remove systemd/launchd service for a profile."""
    import platform as _platform

    # Derive service name for this profile
    # Temporarily set HERMES_HOME so _profile_suffix resolves correctly
    old_home = os.environ.get("HERMES_HOME")
    try:
        os.environ["HERMES_HOME"] = str(profile_dir)
        from hermes_cli.gateway import get_service_name, get_launchd_plist_path

        if _platform.system() == "Linux":
            svc_name = get_service_name()
            svc_file = Path.home() / ".config" / "systemd" / "user" / f"{svc_name}.service"
            if svc_file.exists():
                subprocess.run(
                    ["systemctl", "--user", "disable", svc_name],
                    capture_output=True, check=False, timeout=10,
                )
                subprocess.run(
                    ["systemctl", "--user", "stop", svc_name],
                    capture_output=True, check=False, timeout=10,
                )
                svc_file.unlink(missing_ok=True)
                subprocess.run(
                    ["systemctl", "--user", "daemon-reload"],
                    capture_output=True, check=False, timeout=10,
                )
                print(f"✓ Service {svc_name} removed")

        elif _platform.system() == "Darwin":
            plist_path = get_launchd_plist_path()
            if plist_path.exists():
                subprocess.run(
                    ["launchctl", "unload", str(plist_path)],
                    capture_output=True, check=False, timeout=10,
                )
                plist_path.unlink(missing_ok=True)
                print(f"✓ Launchd service removed")
    except Exception as e:
        print(f"⚠ Service cleanup: {e}")
    finally:
        if old_home is not None:
            os.environ["HERMES_HOME"] = old_home
        elif "HERMES_HOME" in os.environ:
            del os.environ["HERMES_HOME"]


def _stop_gateway_process(profile_dir: Path) -> None:
    """Stop a running gateway process via its PID file."""
    import time as _time

    pid_file = profile_dir / "gateway.pid"
    if not pid_file.exists():
        return

    try:
        raw = pid_file.read_text().strip()
        data = json.loads(raw) if raw.startswith("{") else {"pid": int(raw)}
        pid = int(data["pid"])
        # Route through terminate_pid so Windows uses the appropriate
        # primitive (taskkill / TerminateProcess) — raw os.kill with
        # _signal.SIGKILL raises AttributeError at import time on Windows,
        # and raw os.kill with SIGTERM doesn't cascade to child processes
        # the same way taskkill /T does.
        from gateway.status import terminate_pid as _terminate_pid
        from gateway.status import _pid_exists
        _terminate_pid(pid)  # graceful first
        # Wait up to 10s for graceful shutdown. On Windows, os.kill(pid, 0)
        # is NOT a no-op — use the handle-based existence check.
        for _ in range(20):
            _time.sleep(0.5)
            if not _pid_exists(pid):
                print(f"✓ Gateway stopped (PID {pid})")
                return
        # Force kill
        try:
            _terminate_pid(pid, force=True)
        except (ProcessLookupError, OSError):
            pass
        print(f"✓ Gateway force-stopped (PID {pid})")
    except (ProcessLookupError, PermissionError):
        print("✓ Gateway already stopped")
    except Exception as e:
        print(f"⚠ Could not stop gateway: {e}")


# ---------------------------------------------------------------------------
# Active profile (sticky default)
# ---------------------------------------------------------------------------

def get_active_profile() -> str:
    """Read the sticky active profile name.

    Returns ``"default"`` if no active_profile file exists or it's empty.
    """
    path = _get_active_profile_path()
    try:
        name = path.read_text().strip()
        if not name:
            return "default"
        return name
    except (FileNotFoundError, UnicodeDecodeError, OSError):
        return "default"


def set_active_profile(name: str) -> None:
    """Set the sticky active profile.

    Writes to ``~/.hermes/active_profile``. Use ``"default"`` to clear.
    """
    canon = normalize_profile_name(name)
    validate_profile_name(canon)
    if canon != "default" and not profile_exists(canon):
        raise FileNotFoundError(
            f"Profile '{canon}' does not exist. "
            f"Create it with: hermes profile create {canon}"
        )

    path = _get_active_profile_path()
    path.parent.mkdir(parents=True, exist_ok=True)
    if canon == "default":
        # Remove the file to indicate default
        path.unlink(missing_ok=True)
    else:
        # Atomic write
        tmp = path.with_suffix(".tmp")
        tmp.write_text(canon + "\n")
        tmp.replace(path)


def get_active_profile_name() -> str:
    """Infer the current profile name from HERMES_HOME.

    Returns ``"default"`` if HERMES_HOME is not set or points to ``~/.hermes``.
    Returns the profile name if HERMES_HOME points into ``~/.hermes/profiles/<name>``.
    Returns ``"custom"`` if HERMES_HOME is set to an unrecognized path.
    """
    from hermes_constants import get_hermes_home
    hermes_home = get_hermes_home()
    resolved = hermes_home.resolve()

    default_resolved = _get_default_hermes_home().resolve()
    if resolved == default_resolved:
        return "default"

    profiles_root = _get_profiles_root().resolve()
    try:
        rel = resolved.relative_to(profiles_root)
        parts = rel.parts
        if len(parts) == 1 and _PROFILE_ID_RE.match(parts[0]):
            return parts[0]
    except ValueError:
        pass

    return "custom"


# ---------------------------------------------------------------------------
# Export / Import
# ---------------------------------------------------------------------------

def _default_export_ignore(root_dir: Path):
    """Return an *ignore* callable for :func:`shutil.copytree`.

    At the root level it excludes everything in ``_DEFAULT_EXPORT_EXCLUDE_ROOT``.
    At all levels it excludes ``__pycache__``, sockets, and temp files.
    """

    def _ignore(directory: str, contents: list) -> set:
        ignored: set = set()
        for entry in contents:
            # Universal exclusions (any depth)
            if entry == "__pycache__" or entry.endswith((".sock", ".tmp")):
                ignored.add(entry)
            # npm lockfiles can appear at root
            elif entry in {"package.json", "package-lock.json"}:
                ignored.add(entry)
        # Root-level exclusions
        if Path(directory) == root_dir:
            ignored.update(c for c in contents if c in _DEFAULT_EXPORT_EXCLUDE_ROOT)
        return ignored

    return _ignore


def export_profile(name: str, output_path: str) -> Path:
    """Export a profile to a tar.gz archive.

    Returns the output file path.
    """
    import tempfile

    canon = normalize_profile_name(name)
    validate_profile_name(canon)
    profile_dir = get_profile_dir(canon)
    if not profile_dir.is_dir():
        raise FileNotFoundError(f"Profile '{canon}' does not exist.")

    output = Path(output_path)
    # shutil.make_archive wants the base name without extension
    base = str(output).removesuffix(".tar.gz").removesuffix(".tgz")

    if canon == "default":
        # The default profile IS ~/.hermes itself — its parent is ~/ and its
        # directory name is ".hermes", not "default".  We stage a clean copy
        # under a temp dir so the archive contains ``default/...``.
        with tempfile.TemporaryDirectory() as tmpdir:
            staged = Path(tmpdir) / "default"
            shutil.copytree(
                profile_dir,
                staged,
                ignore=_default_export_ignore(profile_dir),
            )
            result = shutil.make_archive(base, "gztar", tmpdir, "default")
            return Path(result)

    # Named profiles — stage a filtered copy to exclude credentials
    with tempfile.TemporaryDirectory() as tmpdir:
        staged = Path(tmpdir) / canon
        _CREDENTIAL_FILES = {"auth.json", ".env"}
        shutil.copytree(
            profile_dir,
            staged,
            ignore=lambda d, contents: _CREDENTIAL_FILES & set(contents),
        )
        result = shutil.make_archive(base, "gztar", tmpdir, canon)
        return Path(result)


def _normalize_profile_archive_parts(member_name: str) -> List[str]:
    """Return safe path parts for a profile archive member."""
    normalized_name = member_name.replace("\\", "/")
    posix_path = PurePosixPath(normalized_name)
    windows_path = PureWindowsPath(member_name)

    if (
        not normalized_name
        or posix_path.is_absolute()
        or windows_path.is_absolute()
        or windows_path.drive
    ):
        raise ValueError(f"Unsafe archive member path: {member_name}")

    parts = [part for part in posix_path.parts if part not in {"", "."}]
    if not parts or any(part == ".." for part in parts):
        raise ValueError(f"Unsafe archive member path: {member_name}")
    return parts


def _safe_extract_profile_archive(archive: Path, destination: Path) -> None:
    """Extract a profile archive without allowing path escapes or links."""
    import tarfile

    with tarfile.open(archive, "r:gz") as tf:
        for member in tf.getmembers():
            parts = _normalize_profile_archive_parts(member.name)
            target = destination.joinpath(*parts)

            if member.isdir():
                target.mkdir(parents=True, exist_ok=True)
                continue

            if not member.isfile():
                raise ValueError(
                    f"Unsupported archive member type: {member.name}"
                )

            target.parent.mkdir(parents=True, exist_ok=True)
            extracted = tf.extractfile(member)
            if extracted is None:
                raise ValueError(f"Cannot read archive member: {member.name}")

            with extracted, open(target, "wb") as dst:
                shutil.copyfileobj(extracted, dst)

            try:
                os.chmod(target, member.mode & 0o777)
            except OSError:
                pass


def _inspect_profile_archive_roots(archive: Path) -> set[str]:
    """Return the archive's top-level directory names.

    Profile imports expect exactly one root directory. Inspecting the archive
    before extraction lets us stage the import safely instead of mutating a
    live profile tree first and reconciling names later.
    """
    import tarfile

    with tarfile.open(archive, "r:gz") as tf:
        top_dirs = {
            parts[0]
            for member in tf.getmembers()
            for parts in [_normalize_profile_archive_parts(member.name)]
            if len(parts) > 1 or member.isdir()
        }
        if not top_dirs:
            top_dirs = {
                _normalize_profile_archive_parts(member.name)[0]
                for member in tf.getmembers()
                if member.isdir()
            }
    return top_dirs


def import_profile(archive_path: str, name: Optional[str] = None) -> Path:
    """Import a profile from a tar.gz archive.

    If *name* is not given, infers it from the archive's top-level directory.
    Returns the imported profile directory.
    """
    import tempfile

    archive = Path(archive_path)
    if not archive.exists():
        raise FileNotFoundError(f"Archive not found: {archive}")

    top_dirs = _inspect_profile_archive_roots(archive)
    archive_root = top_dirs.pop() if len(top_dirs) == 1 else None
    inferred_name = name or archive_root
    if not inferred_name:
        raise ValueError(
            "Cannot determine profile name from archive. "
            "Specify it explicitly: hermes profile import <archive> --name <name>"
        )
    if archive_root is None:
        raise ValueError(
            "Profile archive must contain exactly one top-level directory."
        )

    # Archives exported from the default profile have "default/" as top-level
    # dir.  Importing as "default" would target ~/.hermes itself — disallow
    # that and guide the user toward a named profile.
    canon = normalize_profile_name(inferred_name)
    validate_profile_name(canon)
    if canon == "default":
        raise ValueError(
            "Cannot import as 'default' — that is the built-in root profile (~/.hermes). "
            "Specify a different name: hermes profile import <archive> --name <name>"
        )

    profile_dir = get_profile_dir(canon)
    if profile_dir.exists():
        raise FileExistsError(f"Profile '{canon}' already exists at {profile_dir}")

    profiles_root = _get_profiles_root()
    profiles_root.mkdir(parents=True, exist_ok=True)

    with tempfile.TemporaryDirectory(prefix="hermes_profile_import_") as tmpdir:
        staging_root = Path(tmpdir)
        _safe_extract_profile_archive(archive, staging_root)

        extracted = staging_root / archive_root
        if not extracted.is_dir():
            raise ValueError(
                f"Profile archive root is missing or invalid: {archive_root}"
            )

        final_source = extracted
        if archive_root != canon:
            final_source = staging_root / canon
            extracted.rename(final_source)

        shutil.move(str(final_source), str(profile_dir))

    return profile_dir


# ---------------------------------------------------------------------------
# Rename
# ---------------------------------------------------------------------------

def _migrate_honcho_profile_host(old_name: str, new_name: str, new_dir: Path) -> None:
    """Rename Honcho host blocks for a renamed profile without changing peers."""
    old_host = f"hermes_{old_name}"
    legacy_old_host = f"hermes.{old_name}"
    new_host = f"hermes_{new_name}"

    candidates = [
        new_dir / "honcho.json",
        _get_default_hermes_home() / "honcho.json",
        Path.home() / ".honcho" / "config.json",
    ]

    seen: set[Path] = set()
    for path in candidates:
        try:
            resolved = path.resolve()
        except OSError:
            resolved = path
        if resolved in seen or not path.is_file():
            continue
        seen.add(resolved)

        try:
            raw = json.loads(path.read_text(encoding="utf-8"))
        except (OSError, json.JSONDecodeError):
            continue

        hosts = raw.get("hosts")
        if not isinstance(hosts, dict):
            continue
        source_host = old_host if old_host in hosts else legacy_old_host
        if source_host not in hosts:
            continue

        if new_host in hosts:
            print(f"⚠ Honcho host block not migrated: {new_host} already exists in {path}")
            continue

        block = hosts[source_host]
        if isinstance(block, dict) and "aiPeer" not in block:
            if source_host.startswith("hermes_"):
                bare = source_host.split("_", 1)[1]
            else:
                bare = source_host.split(".", 1)[1] if "." in source_host else source_host
            block["aiPeer"] = bare
        hosts[new_host] = hosts.pop(source_host)
        tmp = path.with_suffix(path.suffix + ".tmp")
        try:
            tmp.write_text(json.dumps(raw, indent=2, ensure_ascii=False) + "\n", encoding="utf-8")
            tmp.replace(path)
        except OSError:
            try:
                tmp.unlink(missing_ok=True)
            except OSError:
                pass
            continue

        print(f"✓ Honcho host updated: {source_host} → {new_host}")


def rename_profile(old_name: str, new_name: str) -> Path:
    """Rename a profile: directory, wrapper script, service, active_profile.

    Returns the new profile directory.
    """
    old_canon = normalize_profile_name(old_name)
    new_canon = normalize_profile_name(new_name)
    validate_profile_name(old_canon)
    validate_profile_name(new_canon)

    if old_canon == "default":
        raise ValueError("Cannot rename the default profile.")
    if new_canon == "default":
        raise ValueError("Cannot rename to 'default' — it is reserved.")

    old_dir = get_profile_dir(old_canon)
    new_dir = get_profile_dir(new_canon)

    if not old_dir.is_dir():
        raise FileNotFoundError(f"Profile '{old_canon}' does not exist.")
    if new_dir.exists():
        raise FileExistsError(f"Profile '{new_canon}' already exists.")

    # 1. Stop gateway if running
    if _check_gateway_running(old_dir):
        _cleanup_gateway_service(old_canon, old_dir)
        _stop_gateway_process(old_dir)

    # 2. Rename directory
    old_dir.rename(new_dir)
    print(f"✓ Renamed {old_dir.name} → {new_dir.name}")

    # 3. Update profile-scoped Honcho host blocks, preserving aiPeer identity
    _migrate_honcho_profile_host(old_canon, new_canon, new_dir)

    # 4. Update wrapper script
    remove_wrapper_script(old_canon)
    collision = check_alias_collision(new_canon)
    if not collision:
        create_wrapper_script(new_canon)
        print(f"✓ Alias updated: {new_canon}")
    else:
        print(f"⚠ Cannot create alias '{new_canon}' — {collision}")

    # 5. Update active_profile if it pointed to old name
    try:
        if get_active_profile() == old_canon:
            set_active_profile(new_canon)
            print(f"✓ Active profile updated: {new_canon}")
    except Exception:
        pass

    return new_dir


# ---------------------------------------------------------------------------
# Profile env resolution (called from _apply_profile_override)
# ---------------------------------------------------------------------------

def resolve_profile_env(profile_name: str) -> str:
    """Resolve a profile name to a HERMES_HOME path string.

    Called early in the CLI entry point, before any hermes modules
    are imported, to set the HERMES_HOME environment variable.
    """
    canon = normalize_profile_name(profile_name)
    validate_profile_name(canon)
    profile_dir = get_profile_dir(canon)

    if canon != "default" and not profile_dir.is_dir():
        raise FileNotFoundError(
            f"Profile '{canon}' does not exist. "
            f"Create it with: hermes profile create {canon}"
        )

    return str(profile_dir)
