import asyncio
import json
import textwrap
from pathlib import Path

import pytest
from fastapi import Request
from fastapi.datastructures import State

import routes.skills_routes as skills_routes
from routes.skills_routes import SkillUpdateRequest, setup_skills_routes
from services.memory.skill_format import slugify
from services.memory.skills import SkillsManager
from src.tool_approvals import tool_approval_store
from src.tool_capabilities import capabilities_for_action


def _write_skill_md(skills_root: Path, category: str, name: str,
                    owner: str, description: str = "test") -> Path:
    skill_dir = skills_root / slugify(category or "general", fallback="general") / name
    skill_dir.mkdir(parents=True, exist_ok=True)
    md = textwrap.dedent(f"""\
        ---
        name: {name}
        description: {description}
        version: 1.0.0
        category: {category}
        tags: []
        status: draft
        confidence: 0.8
        source: learned
        owner: {owner}
        created: 2026-01-01T00:00:00Z
        ---

        # When to use
        test

        # Procedure
        - step 1
        """)
    path = skill_dir / "SKILL.md"
    path.write_text(md, encoding="utf-8")
    return path


def _request(user: str, body=None) -> Request:
    class DummyApp:
        state = State()

    payload = json.dumps(body).encode("utf-8") if body is not None else b""
    sent = False

    async def receive():
        nonlocal sent
        if sent:
            return {"type": "http.request", "body": b"", "more_body": False}
        sent = True
        return {"type": "http.request", "body": payload, "more_body": False}

    return Request(scope={
        "type": "http",
        "method": "POST" if body is not None else "PUT",
        "headers": [(b"content-type", b"application/json")] if body is not None else [],
        "app": DummyApp(),
        "state": {"current_user": user},
    }, receive=receive)


def _route_handler(router, path: str, method: str):
    return next(
        route.endpoint for route in router.routes
        if route.path == path and method in route.methods
    )


@pytest.mark.asyncio
async def test_update_skill_route_passes_owner_to_manager(tmp_path):
    skills_root = tmp_path / "skills"
    alice_path = _write_skill_md(skills_root, "alice-cat", "caveman-mode", "alice", "alice original")
    bob_path = _write_skill_md(skills_root, "bob-cat", "caveman-mode", "bob", "bob original")

    sm = SkillsManager(str(tmp_path))
    router = setup_skills_routes(sm)
    update_route = _route_handler(router, "/api/skills/{skill_id}", "PUT")

    result = await update_route(
        _request("alice"),
        "caveman-mode",
        SkillUpdateRequest(status="published", description="alice updated"),
    )

    assert result == {"ok": True}
    alice_after = alice_path.read_text(encoding="utf-8")
    bob_after = bob_path.read_text(encoding="utf-8")
    assert "status: published" in alice_after
    assert "alice updated" in alice_after
    assert "status: draft" in bob_after
    assert "bob original" in bob_after


@pytest.mark.asyncio
async def test_save_skill_markdown_route_passes_owner_to_manager(tmp_path):
    skills_root = tmp_path / "skills"
    skill_path = _write_skill_md(skills_root, "general", "caveman-mode", "alice", "before")

    sm = SkillsManager(str(tmp_path))
    router = setup_skills_routes(sm)
    save_route = _route_handler(router, "/api/skills/{skill_id}/markdown", "POST")
    markdown = textwrap.dedent("""\
        ---
        name: caveman-mode
        description: after
        version: 1.0.0
        category: general
        tags: []
        status: published
        confidence: 0.9
        source: user
        owner: alice
        created: 2026-01-01T00:00:00Z
        ---

        # When to use
        after

        # Procedure
        - updated step
        """)

    result = await save_route(
        _request("alice", {"markdown": markdown}),
        "caveman-mode",
    )

    assert result == {"ok": True, "name": "caveman-mode"}
    saved = skill_path.read_text(encoding="utf-8")
    assert "description: after" in saved
    assert "status: published" in saved
    assert "- updated step" in saved


@pytest.mark.asyncio
async def test_manual_skill_test_approval_resumes_only_its_sealed_action(
    tmp_path,
    monkeypatch,
):
    skills_root = tmp_path / "skills"
    _write_skill_md(skills_root, "general", "approval-skill", "alice")
    sm = SkillsManager(str(tmp_path))
    router = setup_skills_routes(sm)
    approve_route = _route_handler(
        router,
        "/api/skills/{skill_id}/test-approval",
        "POST",
    )

    pending = tool_approval_store.create(
        owner="alice",
        session_id=None,
        origin_run_id="skill-run",
        tool_name="bash",
        content="printf approved",
        workspace=None,
        external_untrusted_context_seen=True,
        capabilities=capabilities_for_action("bash", "printf approved"),
    )
    key = ("alice", "approval-skill")
    skills_routes._skill_test_jobs[key] = {
        "status": "awaiting_approval",
        "task": "test task",
        "log": [],
        "approval": pending.public_payload(),
        "_transcript": ["proposal\n"],
        "_run": {
            "md": "skill markdown",
            "url": "http://example.test",
            "model": "model",
            "headers": None,
            "owner": "alice",
        },
    }
    captured = {}

    async def fake_resume(*args, **kwargs):
        captured["approval"] = kwargs.get("exact_approval")
        captured["messages"] = kwargs.get("messages")

    monkeypatch.setattr(skills_routes, "_run_skill_test_job", fake_resume)
    try:
        result = await approve_route(
            _request("alice", {
                "approval_id": pending.approval_id,
                "decision": "approve",
            }),
            "approval-skill",
        )
        await asyncio.sleep(0)

        assert result == {"ok": True, "status": "running", "decision": "approve"}
        assert captured["approval"].pending == pending
        assert "Approved the exact bash action" in captured["messages"][-1]["content"]
        assert captured["messages"][-3]["metadata"]["tool_gate_untrusted"] is True
        assert "proposal" in captured["messages"][-3]["content"]
        assert tool_approval_store.peek(pending.approval_id) is None
    finally:
        skills_routes._skill_test_jobs.pop(key, None)