"""
Tests for runbook artifacts renderer (PR4):
  - render_release_evidence: creates file, contains key sections
  - render_post_review: creates file, contains TODO markers + auto-filled fields
  - API endpoints: POST /evidence, /post_review return 200 with path/bytes
"""
from __future__ import annotations

import asyncio
import json
import time
from pathlib import Path
from unittest.mock import AsyncMock, patch

import pytest


# ── Fixtures ──────────────────────────────────────────────────────────────────

@pytest.fixture
def tmp_rehearsal_docs(tmp_path):
    """tmp_path/docs/runbook with rehearsal checklist."""
    docs_root = tmp_path / "docs"
    runbook_dir = docs_root / "runbook"
    runbook_dir.mkdir(parents=True)
    (runbook_dir / "rehearsal-v1-30min-checklist.md").write_text(
        "# Rehearsal v1 — 30-minute execution plan\n\n"
        "## 0–5 min — Preflight\n\nRun preflight.\n\n"
        "## 5–10 min — Restart\n\nRestart service.",
        encoding="utf-8",
    )
    return docs_root


def _fake_http_proc():
    """Fake subprocess for script steps: exit_code=0, stdout=PASS."""
    from unittest.mock import MagicMock
    proc = MagicMock()
    proc.returncode = 0
    proc.kill = MagicMock()
    proc.wait = AsyncMock(return_value=None)

    async def _communicate():
        return b"PASS\n", b""

    proc.communicate = _communicate
    return proc


async def _create_and_run_all(tmp_path, tmp_docs):
    """Create run, execute all auto steps (http_check + script via mocks), return run_id."""
    import app.docs_index as docs_index_mod
    import app.runbook_runner as runner_mod
    import app.db as db_mod
    import os

    os.environ["SOFIIA_DATA_DIR"] = str(tmp_path / "sofiia-data")
    await docs_index_mod.rebuild_index(tmp_docs)

    out = await runner_mod.create_run(
        "runbook/rehearsal-v1-30min-checklist.md",
        operator_id="test-op",
        node_id="NODA2",
        sofiia_url="http://127.0.0.1:8002",
    )
    run_id = out["run_id"]
    steps_total = out["steps_total"]

    # Execute all auto steps (http_check + script)
    with patch("httpx.AsyncClient.get", new_callable=AsyncMock) as mock_http:
        async def fake_get(url, **kwargs):
            if "audit" in str(url):
                return type("R", (), {"status_code": 401})()
            return type("R", (), {"status_code": 200})()
        mock_http.side_effect = fake_get

        with patch("asyncio.create_subprocess_exec", new_callable=AsyncMock) as mock_exec:
            mock_exec.return_value = _fake_http_proc()

            for _ in range(steps_total):
                step = await runner_mod.next_step(run_id, operator_id="test-op")
                if step is None:
                    break
                if step.get("type") == "manual":
                    await runner_mod.complete_step(run_id, step["step_index"], status="ok", notes="done")

    return run_id


# ── Unit tests: renderer ──────────────────────────────────────────────────────

def test_render_release_evidence_file_created(sofiia_module, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """render_release_evidence creates a file at the expected path."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    out = loop.run_until_complete(art_mod.render_release_evidence(run_id))

    assert "evidence_path" in out
    assert "bytes" in out
    assert out["bytes"] > 0
    path = Path(out["evidence_path"])
    assert path.exists(), f"Expected file at {path}"


def test_render_release_evidence_contains_key_sections(sofiia_module, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """Evidence file contains Release metadata, Preflight, Smoke, and Sign-off sections."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    out = loop.run_until_complete(art_mod.render_release_evidence(run_id))

    content = Path(out["evidence_path"]).read_text(encoding="utf-8")
    assert "Release metadata" in content
    assert "Preflight" in content
    assert "Smoke" in content
    assert "Sign-off" in content
    assert run_id in content


def test_render_release_evidence_includes_step_table(sofiia_module, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """Evidence contains a steps summary table with action_types."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    out = loop.run_until_complete(art_mod.render_release_evidence(run_id))

    content = Path(out["evidence_path"]).read_text(encoding="utf-8")
    assert "http_check" in content or "script" in content or "manual" in content
    assert "All steps summary" in content


def test_render_post_review_file_created(sofiia_module, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """render_post_review creates post_review.md."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    out = loop.run_until_complete(art_mod.render_post_review(run_id))

    assert "path" in out
    path = Path(out["path"])
    assert path.exists()
    assert out["bytes"] > 0


def test_render_post_review_has_todo_markers(sofiia_module, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """Post-review has [TODO] markers for fields requiring manual input."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    out = loop.run_until_complete(art_mod.render_post_review(run_id))

    content = Path(out["path"]).read_text(encoding="utf-8")
    assert "[TODO]" in content
    assert "Release Metadata" in content
    assert "Preflight Outcome" in content
    assert "Smoke Results" in content
    assert "Action Items" in content


def test_render_post_review_autofills_operator(sofiia_module, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """Post-review auto-fills operator and run_id from DB."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    out = loop.run_until_complete(art_mod.render_post_review(run_id))

    content = Path(out["path"]).read_text(encoding="utf-8")
    assert "test-op" in content
    assert run_id in content


def test_render_evidence_404_for_unknown_run(sofiia_module, tmp_path, monkeypatch):
    """render_release_evidence raises ValueError for unknown run_id."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod
    import app.db as _db

    async def run():
        await _db.init_db()
        return await art_mod.render_release_evidence("00000000-0000-0000-0000-000000000000")

    with pytest.raises(ValueError, match="Run not found"):
        loop.run_until_complete(run())


# ── API endpoint tests ────────────────────────────────────────────────────────

def test_evidence_endpoint_404_for_unknown_run(sofiia_client):
    """POST /evidence returns 404 for unknown run_id."""
    r = sofiia_client.post("/api/runbooks/runs/00000000-0000-0000-0000-000000000000/evidence")
    assert r.status_code == 404


def test_post_review_endpoint_404_for_unknown_run(sofiia_client):
    """POST /post_review returns 404 for unknown run_id."""
    r = sofiia_client.post("/api/runbooks/runs/00000000-0000-0000-0000-000000000000/post_review")
    assert r.status_code == 404


def test_evidence_endpoint_success(sofiia_module, sofiia_client, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """POST /evidence returns 200 with evidence_path and bytes."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    r = sofiia_client.post(f"/api/runbooks/runs/{run_id}/evidence")
    assert r.status_code == 200, r.text
    data = r.json()
    assert "evidence_path" in data
    assert data.get("bytes", 0) > 0
    assert run_id in data.get("evidence_path", "")


def test_post_review_endpoint_success(sofiia_module, sofiia_client, tmp_path, tmp_rehearsal_docs, monkeypatch):
    """POST /post_review returns 200 with path and bytes."""
    monkeypatch.setenv("SOFIIA_DATA_DIR", str(tmp_path / "sofiia-data"))
    loop = asyncio.get_event_loop()

    import app.runbook_artifacts as art_mod

    run_id = loop.run_until_complete(_create_and_run_all(tmp_path, tmp_rehearsal_docs))
    r = sofiia_client.post(f"/api/runbooks/runs/{run_id}/post_review")
    assert r.status_code == 200, r.text
    data = r.json()
    assert "path" in data
    assert data.get("bytes", 0) > 0