"""Skills dashboard routes (extracted verbatim from web_server.py).

Two routers because the original registration points are far apart and global
route order matters: ``hub_router`` (the skills-hub install/search/scan
endpoints) was registered before the profiles ``router`` include in
web_server, the plain skills CRUD ``router`` after it - each is mounted at
its original registration point.

Handler bodies are byte-identical; web_server-owned helpers are reached via
the late-binding seam in :mod:`hermes_cli.web_deps` so tests that
``monkeypatch.setattr(web_server, "_spawn_hermes_action", ...)`` keep
working.
"""

import asyncio  # noqa: F401 — used by handlers
import logging
from typing import Optional  # noqa: F401

from fastapi import APIRouter, HTTPException  # noqa: F401

from hermes_cli.web_deps import late, LateState
from hermes_cli.web_models import (
    SkillContentUpdate,
    SkillCreate,
    SkillInstallRequest,
    SkillToggle,
    SkillUninstallRequest,
    SkillsUpdateRequest,
)

# Same logger the handlers used before extraction (identical logger object).
_log = logging.getLogger("hermes_cli.web_server")

hub_router = APIRouter()
router = APIRouter()

# Late-bound web_server helpers (resolved at call time; cycle-safe,
# monkeypatch-transparent).
_clear_skills_prompt_cache = late("_clear_skills_prompt_cache")
_config_profile_scope = late("_config_profile_scope")
_hub_action_name = late("_hub_action_name")
_installed_hub_identifiers = late("_installed_hub_identifiers")
_profile_cli_args = late("_profile_cli_args")
_profile_scope = late("_profile_scope")
_skill_meta_to_payload = late("_skill_meta_to_payload")
_spawn_hermes_action = late("_spawn_hermes_action")
load_config = late("load_config")

# Live proxies for web_server-owned module state (mutations/monkeypatches
# on web_server remain authoritative; resolved at operation time).
_SKILL_HUB_SOURCE_LABELS = LateState("_SKILL_HUB_SOURCE_LABELS")


@hub_router.post("/api/skills/hub/install")
async def install_skill_hub(body: SkillInstallRequest, profile: Optional[str] = None):
    identifier = (body.identifier or "").strip()
    if not identifier:
        raise HTTPException(status_code=400, detail="identifier is required")
    name = _hub_action_name("install", identifier)
    try:
        proc = _spawn_hermes_action(
            _profile_cli_args(body.profile or profile)
            + ["skills", "install", identifier, "--yes"],
            name,
        )
    except HTTPException:
        raise
    except Exception as exc:
        _log.exception("Failed to spawn skills install")
        raise HTTPException(status_code=500, detail=f"Failed to install skill: {exc}")
    return {"ok": True, "pid": proc.pid, "name": name}


@hub_router.post("/api/skills/hub/uninstall")
async def uninstall_skill_hub(body: SkillUninstallRequest, profile: Optional[str] = None):
    name = (body.name or "").strip()
    if not name:
        raise HTTPException(status_code=400, detail="name is required")
    action = _hub_action_name("uninstall", name)
    try:
        proc = _spawn_hermes_action(
            _profile_cli_args(body.profile or profile) + ["skills", "uninstall", name, "--yes"],
            action,
        )
    except HTTPException:
        raise
    except Exception as exc:
        _log.exception("Failed to spawn skills uninstall")
        raise HTTPException(status_code=500, detail=f"Failed to uninstall skill: {exc}")
    return {"ok": True, "pid": proc.pid, "name": action}


@hub_router.post("/api/skills/hub/update")
async def update_skills_hub(
    body: Optional[SkillsUpdateRequest] = None, profile: Optional[str] = None
):
    try:
        effective = (body.profile if body else None) or profile
        proc = _spawn_hermes_action(
            _profile_cli_args(effective) + ["skills", "update"], "skills-update"
        )
    except HTTPException:
        raise
    except Exception as exc:
        _log.exception("Failed to spawn skills update")
        raise HTTPException(status_code=500, detail=f"Failed to update skills: {exc}")
    return {"ok": True, "pid": proc.pid, "name": "skills-update"}


@hub_router.get("/api/skills/hub/sources")
async def list_skills_hub_sources(profile: Optional[str] = None):
    """List the configured skill-hub sources and installed-skill provenance.

    Gives the dashboard something to show BEFORE a search runs — which hubs
    are wired up, their trust tier, and a set of featured skills pulled from
    the centralized index (zero extra API calls).  Without this the Browse-hub
    tab is a blank page with no indication it's even connected to anything.
    ``profile`` scopes the installed-skill provenance to that profile.
    """

    def _run():
        from tools.skills_hub import create_source_router

        with _config_profile_scope(profile):
            sources = create_source_router()
        out = []
        index_available = False
        featured = []
        for src in sources:
            sid = src.source_id()
            entry = {
                "id": sid,
                "label": _SKILL_HUB_SOURCE_LABELS.get(sid, sid),
            }
            # GitHub exposes a rate-limit flag; the index an availability flag.
            if sid == "github":
                try:
                    entry["rate_limited"] = bool(getattr(src, "is_rate_limited", False))
                except Exception:
                    entry["rate_limited"] = False
            if sid == "hermes-index":
                try:
                    index_available = bool(getattr(src, "is_available", False))
                except Exception:
                    index_available = False
                entry["available"] = index_available
                # Empty-query search on the index returns featured/popular skills.
                if index_available:
                    try:
                        featured = [
                            _skill_meta_to_payload(m) for m in src.search("", limit=12)
                        ]
                    except Exception:
                        featured = []
            out.append(entry)
        # Tell the UI which sources are worth searching individually (for its
        # progressive per-source fan-out). Mirror parallel_search_sources: when
        # the centralized index is available it already subsumes the external
        # API sources, so they're redundant — skipping them avoids ~70 GitHub
        # calls per keystroke. Keep this set in sync with that function's
        # ``_api_source_ids``.
        _api_source_ids = frozenset(
            {"github", "skills-sh", "clawhub", "lobehub", "well-known"}
        )
        for entry in out:
            entry["searchable"] = not (index_available and entry["id"] in _api_source_ids)
        return {
            "sources": out,
            "index_available": index_available,
            "featured": featured,
            "installed": _installed_hub_identifiers(profile),
        }

    try:
        return await asyncio.to_thread(_run)
    except HTTPException:
        raise
    except Exception as exc:
        _log.exception("skills hub sources listing failed")
        raise HTTPException(status_code=502, detail=f"Hub sources failed: {exc}")


@hub_router.get("/api/skills/hub/search")
async def search_skills_hub(
    q: str = "", source: str = "all", limit: int = 20, profile: Optional[str] = None
):
    """Search the skill hub across all configured sources.

    Network-bound (parallel source search); runs in a thread so the FastAPI
    loop isn't blocked.  Returns structured results the UI installs by
    identifier via POST /api/skills/hub/install, previews via
    /api/skills/hub/preview, and scans via /api/skills/hub/scan.
    """
    query = (q or "").strip()
    if not query:
        return {"results": [], "source_counts": {}, "timed_out": [], "installed": {}}

    def _run():
        from tools.skills_hub import create_source_router, parallel_search_sources

        with _config_profile_scope(profile):
            sources = create_source_router()
        capped = min(max(limit, 1), 50)
        all_results, source_counts, timed_out = parallel_search_sources(
            sources, query=query, source_filter=source or "all", overall_timeout=30
        )

        # Dedupe by identifier, preferring higher trust (mirrors unified_search).
        _rank = {"builtin": 2, "trusted": 1, "community": 0}
        seen = {}
        for r in all_results:
            if r.identifier not in seen:
                seen[r.identifier] = r
            elif _rank.get(r.trust_level, 0) > _rank.get(seen[r.identifier].trust_level, 0):
                seen[r.identifier] = r
        deduped = list(seen.values())[:capped]

        return {
            "results": [_skill_meta_to_payload(m) for m in deduped],
            "source_counts": source_counts,
            "timed_out": timed_out,
            "installed": _installed_hub_identifiers(profile),
        }

    try:
        return await asyncio.to_thread(_run)
    except HTTPException:
        raise
    except Exception as exc:
        _log.exception("skills hub search failed")
        raise HTTPException(status_code=502, detail=f"Hub search failed: {exc}")


@hub_router.get("/api/skills/hub/preview")
async def preview_skill_hub(identifier: str = "", profile: Optional[str] = None):
    """Fetch a hub skill's SKILL.md content + metadata for in-dashboard reading.

    Resolves the identifier across configured sources (same path the CLI
    installer uses), then returns the rendered SKILL.md text and the file
    manifest WITHOUT installing anything.  This is the 'read the actual skill
    before installing' affordance the Browse-hub tab was missing.

    Scoped to ``profile`` so a non-default profile with different hub taps
    resolves against ITS source router, not the default profile's.
    """
    ident = (identifier or "").strip()
    if not ident:
        raise HTTPException(status_code=400, detail="identifier is required")

    def _run():
        from hermes_cli.skills_hub import _resolve_source_meta_and_bundle
        from tools.skills_hub import create_source_router

        with _config_profile_scope(profile):
            sources = create_source_router()
            meta, bundle, _src = _resolve_source_meta_and_bundle(ident, sources)
        if not bundle and not meta:
            return None

        files = {}
        skill_md = ""
        if bundle:
            for rel, content in (bundle.files or {}).items():
                if isinstance(content, bytes):
                    # Some sources (e.g. official optional skills) store every
                    # file as bytes.  Decode text so SKILL.md / docs render;
                    # only fall back to a placeholder for genuinely-binary data.
                    try:
                        files[rel] = content.decode("utf-8")
                    except UnicodeDecodeError:
                        files[rel] = "(binary file)"
                else:
                    files[rel] = content
            skill_md = files.get("SKILL.md", "") or ""

        m = meta or bundle
        return {
            "name": getattr(m, "name", ident),
            "description": getattr(m, "description", "") or "",
            "source": getattr(m, "source", "") or "",
            "identifier": getattr(m, "identifier", ident) or ident,
            "trust_level": getattr(m, "trust_level", "community") or "community",
            "repo": getattr(m, "repo", None),
            "tags": list(getattr(m, "tags", None) or []),
            "skill_md": skill_md,
            "files": sorted(files.keys()),
        }

    try:
        result = await asyncio.to_thread(_run)
    except Exception as exc:
        _log.exception("skills hub preview failed")
        raise HTTPException(status_code=502, detail=f"Hub preview failed: {exc}")
    if result is None:
        raise HTTPException(status_code=404, detail=f"Skill not found: {ident}")
    return result


@hub_router.get("/api/skills/hub/scan")
async def scan_skill_hub(identifier: str = "", profile: Optional[str] = None):
    """Run the install-time security scan on a hub skill WITHOUT installing it.

    Fetches the bundle, quarantines it, and runs the same `scan_skill` /
    `should_allow_install` pipeline the CLI installer uses — then cleans up the
    quarantine.  Returns the verdict, per-finding detail, trust tier, and the
    install-policy decision so the dashboard can show a visual safety result
    on demand (the 'scan' button the Browse-hub tab was missing).

    Scoped to ``profile`` so the bundle resolves against that profile's hub
    source router, matching where an install would pull it from.
    """
    ident = (identifier or "").strip()
    if not ident:
        raise HTTPException(status_code=400, detail="identifier is required")

    def _run():
        import shutil as _shutil

        from hermes_cli.skills_hub import _resolve_source_meta_and_bundle
        from tools.skills_hub import create_source_router, quarantine_bundle
        from tools.skills_guard import scan_skill, should_allow_install

        with _config_profile_scope(profile):
            sources = create_source_router()
            meta, bundle, _src = _resolve_source_meta_and_bundle(ident, sources)
        if not bundle:
            return None

        if bundle.source == "official":
            scan_source = "official"
        else:
            scan_source = (
                getattr(bundle, "identifier", "")
                or getattr(meta, "identifier", "")
                or ident
            )

        q_path = None
        try:
            q_path = quarantine_bundle(bundle)
            result = scan_skill(q_path, source=scan_source)
        finally:
            if q_path is not None:
                _shutil.rmtree(q_path, ignore_errors=True)

        allowed, reason = should_allow_install(result, force=False)
        # `allowed` may be None ("ask") for agent-created/dangerous gates.
        if allowed is True:
            policy = "allow"
        elif allowed is None:
            policy = "ask"
        else:
            policy = "block"

        findings = [
            {
                "severity": f.severity,
                "category": f.category,
                "file": f.file,
                "line": f.line,
                "description": f.description,
            }
            for f in result.findings
        ]
        # Per-severity tally for an at-a-glance summary.
        counts = {"critical": 0, "high": 0, "medium": 0, "low": 0}
        for f in result.findings:
            if f.severity in counts:
                counts[f.severity] += 1

        return {
            "name": result.skill_name,
            "identifier": ident,
            "source": result.source,
            "trust_level": result.trust_level,
            "verdict": result.verdict,
            "summary": result.summary,
            "policy": policy,
            "policy_reason": reason,
            "findings": findings,
            "severity_counts": counts,
        }

    try:
        result = await asyncio.to_thread(_run)
    except Exception as exc:
        _log.exception("skills hub scan failed")
        raise HTTPException(status_code=502, detail=f"Hub scan failed: {exc}")
    if result is None:
        raise HTTPException(status_code=404, detail=f"Skill not found: {ident}")
    return result


@router.get("/api/skills")
async def get_skills(profile: Optional[str] = None):
    from tools.skills_tool import _find_all_skills
    from hermes_cli.skills_config import get_disabled_skills
    from tools.skill_usage import (
        _read_bundled_manifest_names,
        _read_hub_installed_names,
        activity_count,
        load_usage,
    )
    with _profile_scope(profile):
        config = load_config()
        disabled = get_disabled_skills(config)
        skills = _find_all_skills(skip_disabled=True)
        usage = load_usage()
        # Set-based provenance (same classification as skill_usage.provenance,
        # without a per-skill manifest read): hub > bundled > agent, where
        # "agent" covers agent-authored AND local hand-made skills — the ones
        # the user may edit/delete from the UI.
        bundled_names = _read_bundled_manifest_names()
        hub_names = _read_hub_installed_names()
    for s in skills:
        s["enabled"] = s["name"] not in disabled
        s["usage"] = activity_count(usage.get(s["name"], {}))
        s["provenance"] = (
            "hub" if s["name"] in hub_names
            else "bundled" if s["name"] in bundled_names
            else "agent"
        )
    return skills


@router.put("/api/skills/toggle")
async def toggle_skill(body: SkillToggle, profile: Optional[str] = None):
    from hermes_cli.skills_config import get_disabled_skills, save_disabled_skills
    with _profile_scope(body.profile or profile):
        config = load_config()
        disabled = get_disabled_skills(config)
        if body.enabled:
            disabled.discard(body.name)
        else:
            disabled.add(body.name)
        save_disabled_skills(config, disabled)
    return {"ok": True, "name": body.name, "enabled": body.enabled}


@router.get("/api/skills/content")
async def get_skill_content(name: str, profile: Optional[str] = None):
    """Return the raw SKILL.md text for a skill, for the dashboard editor."""
    from tools.skill_manager_tool import _find_skill

    with _profile_scope(profile):
        found = _find_skill(name)
        if not found:
            raise HTTPException(status_code=404, detail=f"Skill '{name}' not found.")
        skill_md = found["path"] / "SKILL.md"
        if not skill_md.exists():
            raise HTTPException(status_code=404, detail=f"Skill '{name}' has no SKILL.md.")
        try:
            content = skill_md.read_text(encoding="utf-8")
        except OSError as exc:
            raise HTTPException(status_code=500, detail=str(exc)) from exc
        return {"name": name, "content": content, "path": str(skill_md)}


@router.post("/api/skills")
async def create_skill(body: SkillCreate):
    """Create a new custom skill (SKILL.md) from the dashboard editor.

    Calls the same validated write path as the agent's ``skill_manage``
    tool (frontmatter validation, name/category validation, size limit,
    optional security scan) — but bypasses the agent write-approval gate:
    a write from the authenticated dashboard IS the user acting directly.
    """
    from tools.skill_manager_tool import _create_skill

    with _profile_scope(body.profile):
        result = _create_skill(body.name, body.content, body.category or None)
    if not result.get("success"):
        raise HTTPException(status_code=400, detail=result.get("error", "Failed to create skill."))
    _clear_skills_prompt_cache()
    return result


@router.put("/api/skills/content")
async def update_skill_content(body: SkillContentUpdate):
    """Replace the SKILL.md of an existing skill (full rewrite) from the editor."""
    from tools.skill_manager_tool import _edit_skill

    with _profile_scope(body.profile):
        result = _edit_skill(body.name, body.content)
    if not result.get("success"):
        err = result.get("error", "Failed to update skill.")
        status = 404 if "not found" in str(err).lower() else 400
        raise HTTPException(status_code=status, detail=err)
    _clear_skills_prompt_cache()
    return result