# [DEF:backend.tests.test_reports_detail_api:Module]
# @TIER: CRITICAL
# @SEMANTICS: tests, reports, api, detail, diagnostics
# @PURPOSE: Contract tests for GET /api/reports/{report_id} detail endpoint behavior.
# @LAYER: Domain (Tests)
# @RELATION: TESTS -> backend.src.api.routes.reports

from datetime import datetime, timedelta
from types import SimpleNamespace

from fastapi.testclient import TestClient

from src.app import app
from src.core.task_manager.models import Task, TaskStatus
from src.dependencies import get_current_user, get_task_manager


class _FakeTaskManager:
    def __init__(self, tasks):
        self._tasks = tasks

    def get_all_tasks(self):
        return self._tasks


def _admin_user():
    role = SimpleNamespace(name="Admin", permissions=[])
    return SimpleNamespace(username="test-admin", roles=[role])


def _make_task(task_id: str, plugin_id: str, status: TaskStatus, result=None):
    now = datetime.utcnow()
    return Task(
        id=task_id,
        plugin_id=plugin_id,
        status=status,
        started_at=now - timedelta(minutes=2),
        finished_at=now - timedelta(minutes=1) if status != TaskStatus.RUNNING else None,
        params={"environment_id": "env-1"},
        result=result or {"summary": f"{plugin_id} result"},
    )


def test_get_report_detail_success():
    task = _make_task(
        "detail-1",
        "superset-migration",
        TaskStatus.FAILED,
        result={"error": {"message": "Step failed", "next_actions": ["Check mapping", "Retry"]}},
    )

    app.dependency_overrides[get_current_user] = lambda: _admin_user()
    app.dependency_overrides[get_task_manager] = lambda: _FakeTaskManager([task])

    try:
        client = TestClient(app)
        response = client.get("/api/reports/detail-1")
        assert response.status_code == 200

        data = response.json()
        assert "report" in data
        assert data["report"]["report_id"] == "detail-1"
        assert "diagnostics" in data
        assert "next_actions" in data
    finally:
        app.dependency_overrides.clear()


def test_get_report_detail_not_found():
    task = _make_task("detail-2", "superset-backup", TaskStatus.SUCCESS)

    app.dependency_overrides[get_current_user] = lambda: _admin_user()
    app.dependency_overrides[get_task_manager] = lambda: _FakeTaskManager([task])

    try:
        client = TestClient(app)
        response = client.get("/api/reports/unknown-id")
        assert response.status_code == 404
    finally:
        app.dependency_overrides.clear()


# [/DEF:backend.tests.test_reports_detail_api:Module]