import os

from fastapi.testclient import TestClient

os.environ.setdefault("DODO_DATABASE_URL", "sqlite+aiosqlite:////tmp/dodo-health-test.db")
os.environ.setdefault("DODO_AUTO_CREATE_SCHEMA", "true")

from backend.main import app


def test_health_live():
    with TestClient(app) as client:
        response = client.get("/health/live")
    assert response.status_code == 200
    assert response.json() == {"status": "ok"}


def test_setup_status_starts_uninitialized(client):
    response = client.get("/api/v1/setup/status")
    assert response.status_code == 200
    assert response.json() == {"initialized": False}


def test_initialize_login_and_create_task(client):
    initialized = client.post(
        "/api/v1/setup/initialize",
        json={"username": "owner", "password": "correct horse battery staple"},
    )
    assert initialized.status_code == 201
    assert initialized.json()["username"] == "owner"
    assert "dodo_session" in initialized.cookies

    folder = client.post("/api/v1/folders", json={"name": "工作"})
    assert folder.status_code == 201

    task_list = client.post(
        "/api/v1/lists", json={"name": "本周", "folder_id": folder.json()["id"]}
    )
    assert task_list.status_code == 201

    task = client.post(
        "/api/v1/tasks",
        json={"title": "完成 dodo 第一阶段", "list_id": task_list.json()["id"], "priority": 3},
    )
    assert task.status_code == 201
    assert task.json()["title"] == "完成 dodo 第一阶段"

    tasks = client.get("/api/v1/tasks")
    assert tasks.status_code == 200
    assert len(tasks.json()["items"]) == 1


def test_initialize_is_closed_after_first_user(client):
    payload = {"username": "owner", "password": "correct horse battery staple"}
    assert client.post("/api/v1/setup/initialize", json=payload).status_code == 201
    response = client.post("/api/v1/setup/initialize", json=payload)
    assert response.status_code == 409


def test_unauthenticated_task_access_is_rejected(client):
    response = client.get("/api/v1/tasks")
    assert response.status_code == 401


def test_task_can_be_updated_completed_and_soft_deleted(client):
    client.post(
        "/api/v1/setup/initialize",
        json={"username": "owner", "password": "correct horse battery staple"},
    )
    inbox = client.get("/api/v1/lists").json()[0]
    task = client.post(
        "/api/v1/tasks", json={"title": "旧标题", "list_id": inbox["id"]}
    ).json()

    updated = client.patch(
        f"/api/v1/tasks/{task['id']}",
        json={"title": "新标题", "completed": True, "version": task["version"]},
    )
    assert updated.status_code == 200
    assert updated.json()["title"] == "新标题"
    assert updated.json()["completed"] is True
    assert updated.json()["version"] == 2

    conflict = client.patch(
        f"/api/v1/tasks/{task['id']}",
        json={"title": "冲突标题", "version": task["version"]},
    )
    assert conflict.status_code == 409

    deleted = client.delete(f"/api/v1/tasks/{task['id']}")
    assert deleted.status_code == 204
    assert client.get("/api/v1/tasks").json()["items"] == []


def test_task_update_rejects_null_title(client):
    client.post(
        "/api/v1/setup/initialize",
        json={"username": "owner", "password": "correct horse battery staple"},
    )
    inbox = client.get("/api/v1/lists").json()[0]
    task = client.post("/api/v1/tasks", json={"title": "任务", "list_id": inbox["id"]}).json()
    response = client.patch(
        f"/api/v1/tasks/{task['id']}", json={"title": None, "version": task["version"]}
    )
    assert response.status_code == 422


def test_subtask_parent_must_belong_to_same_user_and_list(client):
    client.post(
        "/api/v1/setup/initialize",
        json={"username": "owner", "password": "correct horse battery staple"},
    )
    inbox = client.get("/api/v1/lists").json()[0]
    other = client.post("/api/v1/lists", json={"name": "其他"}).json()
    parent = client.post("/api/v1/tasks", json={"title": "父任务", "list_id": inbox["id"]}).json()
    response = client.post(
        "/api/v1/tasks",
        json={"title": "子任务", "list_id": other["id"], "parent_id": parent["id"]},
    )
    assert response.status_code == 400


def test_logout_revokes_current_session(client):
    client.post(
        "/api/v1/setup/initialize",
        json={"username": "owner", "password": "correct horse battery staple"},
    )
    assert client.get("/api/v1/me").status_code == 200
    assert client.post("/api/v1/auth/logout").status_code == 204
    assert client.get("/api/v1/me").status_code == 401