"""Tests for web/api.py — Phase endpoints (KIN-059).

Covers:
  - POST /api/projects/new — создание проекта с фазами
  - GET /api/projects/{id}/phases — список фаз с joined task
  - POST /api/phases/{id}/approve — approve фазы
  - POST /api/phases/{id}/reject — reject фазы
  - POST /api/phases/{id}/revise — revise фазы
  - POST /api/projects/{id}/phases/start — запуск агента для активной фазы
"""

from unittest.mock import MagicMock, patch

import pytest
from fastapi.testclient import TestClient

import web.api as api_module


@pytest.fixture
def client(tmp_path):
    """KIN-059: TestClient с изолированной временной БД."""
    db_path = tmp_path / "test.db"
    api_module.DB_PATH = db_path
    from web.api import app
    return TestClient(app)


@pytest.fixture
def client_with_phases(client):
    """KIN-059: клиент с уже созданным проектом + фазами."""
    r = client.post("/api/projects/new", json={
        "id": "proj1",
        "name": "Test Project",
        "path": "/tmp/proj1",
        "description": "Описание тестового проекта",
        "roles": ["business_analyst"],
    })
    assert r.status_code == 200
    return client


# ---------------------------------------------------------------------------
# POST /api/projects/new
# ---------------------------------------------------------------------------


def test_post_projects_new_creates_project_and_phases(client):
    """KIN-059: POST /api/projects/new создаёт проект с фазами (researcher + architect)."""
    r = client.post("/api/projects/new", json={
        "id": "p1",
        "name": "My Project",
        "path": "/tmp/p1",
        "description": "Описание",
        "roles": ["tech_researcher"],
    })
    assert r.status_code == 200
    data = r.json()
    assert data["project"]["id"] == "p1"
    # tech_researcher + architect = 2 фазы
    assert len(data["phases"]) == 2
    phase_roles = [ph["role"] for ph in data["phases"]]
    assert "architect" in phase_roles
    assert phase_roles[-1] == "architect"


def test_post_projects_new_no_roles_returns_400(client):
    """KIN-059: POST /api/projects/new без ролей возвращает 400."""
    r = client.post("/api/projects/new", json={
        "id": "p1",
        "name": "P1",
        "path": "/tmp/p1",
        "description": "Desc",
        "roles": [],
    })
    assert r.status_code == 400


def test_post_projects_new_only_architect_returns_400(client):
    """KIN-059: только architect в roles → 400 (architect не researcher)."""
    r = client.post("/api/projects/new", json={
        "id": "p1",
        "name": "P1",
        "path": "/tmp/p1",
        "description": "Desc",
        "roles": ["architect"],
    })
    assert r.status_code == 400


def test_post_projects_new_duplicate_id_returns_409(client):
    """KIN-059: повторное создание проекта с тем же id → 409."""
    payload = {
        "id": "dup",
        "name": "Dup",
        "path": "/tmp/dup",
        "description": "Desc",
        "roles": ["marketer"],
    }
    client.post("/api/projects/new", json=payload)
    r = client.post("/api/projects/new", json=payload)
    assert r.status_code == 409


def test_post_projects_new_first_phase_is_active(client):
    """KIN-059: первая фаза созданного проекта сразу имеет status=active."""
    r = client.post("/api/projects/new", json={
        "id": "p1",
        "name": "P1",
        "path": "/tmp/p1",
        "description": "Desc",
        "roles": ["market_researcher", "tech_researcher"],
    })
    assert r.status_code == 200
    first_phase = r.json()["phases"][0]
    assert first_phase["status"] == "active"


# ---------------------------------------------------------------------------
# GET /api/projects/{project_id}/phases
# ---------------------------------------------------------------------------


def test_get_project_phases_returns_phases_with_task(client_with_phases):
    """KIN-059: GET /api/projects/{id}/phases возвращает фазы с joined полем task."""
    r = client_with_phases.get("/api/projects/proj1/phases")
    assert r.status_code == 200
    phases = r.json()
    assert len(phases) >= 1
    # Активная первая фаза должна иметь task
    active = next((ph for ph in phases if ph["status"] == "active"), None)
    assert active is not None
    assert active["task"] is not None


def test_get_project_phases_project_not_found_returns_404(client):
    """KIN-059: GET /api/projects/missing/phases → 404."""
    r = client.get("/api/projects/missing/phases")
    assert r.status_code == 404


# ---------------------------------------------------------------------------
# POST /api/phases/{phase_id}/approve
# ---------------------------------------------------------------------------


def _get_first_active_phase_id(client, project_id: str) -> int:
    """Вспомогательная: получить id первой активной фазы."""
    phases = client.get(f"/api/projects/{project_id}/phases").json()
    active = next(ph for ph in phases if ph["status"] == "active")
    return active["id"]


def test_approve_phase_returns_200_and_activates_next(client_with_phases):
    """KIN-059: POST /api/phases/{id}/approve → 200, следующая фаза активируется."""
    phase_id = _get_first_active_phase_id(client_with_phases, "proj1")
    r = client_with_phases.post(f"/api/phases/{phase_id}/approve", json={})
    assert r.status_code == 200
    data = r.json()
    assert data["phase"]["status"] == "approved"
    # Следующая фаза (architect) активирована
    assert data["next_phase"] is not None
    assert data["next_phase"]["status"] == "active"


def test_approve_phase_not_found_returns_404(client):
    """KIN-059: approve несуществующей фазы → 404."""
    r = client.post("/api/phases/9999/approve", json={})
    assert r.status_code == 404


def test_approve_phase_not_active_returns_400(client):
    """KIN-059: approve pending-фазы → 400 (фаза не active)."""
    # Создаём проект с двумя researcher-ролями
    client.post("/api/projects/new", json={
        "id": "p2",
        "name": "P2",
        "path": "/tmp/p2",
        "description": "Desc",
        "roles": ["market_researcher", "tech_researcher"],
    })
    phases = client.get("/api/projects/p2/phases").json()
    # Вторая фаза pending
    pending = next(ph for ph in phases if ph["status"] == "pending")
    r = client.post(f"/api/phases/{pending['id']}/approve", json={})
    assert r.status_code == 400


# ---------------------------------------------------------------------------
# POST /api/phases/{phase_id}/reject
# ---------------------------------------------------------------------------


def test_reject_phase_returns_200(client_with_phases):
    """KIN-059: POST /api/phases/{id}/reject → 200, status=rejected."""
    phase_id = _get_first_active_phase_id(client_with_phases, "proj1")
    r = client_with_phases.post(f"/api/phases/{phase_id}/reject", json={"reason": "Не актуально"})
    assert r.status_code == 200
    assert r.json()["status"] == "rejected"


def test_reject_phase_not_found_returns_404(client):
    """KIN-059: reject несуществующей фазы → 404."""
    r = client.post("/api/phases/9999/reject", json={"reason": "test"})
    assert r.status_code == 404


def test_reject_phase_not_active_returns_400(client):
    """KIN-059: reject pending-фазы → 400."""
    client.post("/api/projects/new", json={
        "id": "p3",
        "name": "P3",
        "path": "/tmp/p3",
        "description": "Desc",
        "roles": ["legal_researcher", "ux_designer"],
    })
    phases = client.get("/api/projects/p3/phases").json()
    pending = next(ph for ph in phases if ph["status"] == "pending")
    r = client.post(f"/api/phases/{pending['id']}/reject", json={"reason": "test"})
    assert r.status_code == 400


# ---------------------------------------------------------------------------
# POST /api/phases/{phase_id}/revise
# ---------------------------------------------------------------------------


def test_revise_phase_returns_200_and_creates_new_task(client_with_phases):
    """KIN-059: POST /api/phases/{id}/revise → 200, создаётся новая задача."""
    phase_id = _get_first_active_phase_id(client_with_phases, "proj1")
    r = client_with_phases.post(
        f"/api/phases/{phase_id}/revise",
        json={"comment": "Добавь детали по монетизации"},
    )
    assert r.status_code == 200
    data = r.json()
    assert data["phase"]["status"] == "revising"
    assert data["new_task"] is not None
    assert data["new_task"]["brief"]["revise_comment"] == "Добавь детали по монетизации"


def test_revise_phase_empty_comment_returns_400(client_with_phases):
    """KIN-059: revise с пустым комментарием → 400."""
    phase_id = _get_first_active_phase_id(client_with_phases, "proj1")
    r = client_with_phases.post(f"/api/phases/{phase_id}/revise", json={"comment": "   "})
    assert r.status_code == 400


def test_revise_phase_not_found_returns_404(client):
    """KIN-059: revise несуществующей фазы → 404."""
    r = client.post("/api/phases/9999/revise", json={"comment": "test"})
    assert r.status_code == 404


def test_revise_phase_not_active_returns_400(client):
    """KIN-059: revise pending-фазы → 400."""
    client.post("/api/projects/new", json={
        "id": "p4",
        "name": "P4",
        "path": "/tmp/p4",
        "description": "Desc",
        "roles": ["marketer", "ux_designer"],
    })
    phases = client.get("/api/projects/p4/phases").json()
    pending = next(ph for ph in phases if ph["status"] == "pending")
    r = client.post(f"/api/phases/{pending['id']}/revise", json={"comment": "test"})
    assert r.status_code == 400


# ---------------------------------------------------------------------------
# POST /api/projects/{project_id}/phases/start
# ---------------------------------------------------------------------------


def test_start_phase_returns_202_and_starts_agent(client_with_phases):
    """KIN-059: POST /api/projects/{id}/phases/start → 202, агент запускается в фоне."""
    with patch("subprocess.Popen") as mock_popen:
        mock_proc = MagicMock()
        mock_proc.pid = 12345
        mock_popen.return_value = mock_proc

        r = client_with_phases.post("/api/projects/proj1/phases/start")

    assert r.status_code == 202
    data = r.json()
    assert data["status"] == "started"
    assert "phase_id" in data
    assert "task_id" in data
    mock_popen.assert_called_once()


def test_start_phase_task_set_to_in_progress(client_with_phases):
    """KIN-059: start устанавливает task.status=in_progress перед запуском агента."""
    with patch("subprocess.Popen") as mock_popen:
        mock_popen.return_value = MagicMock(pid=1)
        r = client_with_phases.post("/api/projects/proj1/phases/start")
        task_id = r.json()["task_id"]

    task = client_with_phases.get(f"/api/tasks/{task_id}").json()
    assert task["status"] == "in_progress"


def test_start_phase_no_active_phase_returns_404(client):
    """KIN-059: start без активной/revising фазы → 404."""
    # Проект без фаз (обычный проект через /api/projects)
    client.post("/api/projects", json={"id": "plain", "name": "Plain", "path": "/tmp/plain"})
    r = client.post("/api/projects/plain/phases/start")
    assert r.status_code == 404


def test_start_phase_project_not_found_returns_404(client):
    """KIN-059: start для несуществующего проекта → 404."""
    r = client.post("/api/projects/missing/phases/start")
    assert r.status_code == 404