import pytest
from conftest import auth_header


class TestListDevices:
    async def test_list_devices(self, client, admin_user, admin_token, seed_devices):
        resp = await client.get("/api/v1/devices", headers=auth_header(admin_token))
        assert resp.status_code == 200
        body = resp.json()
        assert "total" in body
        assert "items" in body
        assert body["total"] >= 1

    async def test_list_devices_pagination(self, client, admin_user, admin_token, seed_devices):
        resp = await client.get(
            "/api/v1/devices", params={"page": 1, "page_size": 2},
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        body = resp.json()
        assert len(body["items"]) <= 2

    async def test_list_devices_filter_by_type(self, client, admin_user, admin_token, seed_devices):
        resp = await client.get(
            "/api/v1/devices", params={"device_type": "pv_inverter"},
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        for item in resp.json()["items"]:
            assert item["device_type"] == "pv_inverter"

    async def test_list_devices_unauthenticated(self, client):
        resp = await client.get("/api/v1/devices")
        assert resp.status_code == 401


class TestDeviceStats:
    async def test_get_device_stats(self, client, admin_user, admin_token, seed_devices):
        resp = await client.get("/api/v1/devices/stats", headers=auth_header(admin_token))
        assert resp.status_code == 200
        body = resp.json()
        assert "online" in body
        assert "offline" in body
        assert "alarm" in body
        assert "maintenance" in body


class TestDeviceTypes:
    async def test_get_device_types(self, client, admin_user, admin_token, seed_device_types):
        resp = await client.get("/api/v1/devices/types", headers=auth_header(admin_token))
        assert resp.status_code == 200
        body = resp.json()
        assert isinstance(body, list)
        assert len(body) >= 1
        assert "code" in body[0]


class TestDeviceGroups:
    async def test_get_device_groups(self, client, admin_user, admin_token, seed_device_groups):
        resp = await client.get("/api/v1/devices/groups", headers=auth_header(admin_token))
        assert resp.status_code == 200
        body = resp.json()
        assert isinstance(body, list)


class TestCreateDevice:
    async def test_create_device_as_admin(self, client, admin_user, admin_token, seed_device_types):
        resp = await client.post(
            "/api/v1/devices",
            json={
                "name": "新设备", "code": "NEW-001", "device_type": "pv_inverter",
                "rated_power": 200.0, "location": "A区屋顶",
            },
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        body = resp.json()
        assert body["name"] == "新设备"
        assert body["code"] == "NEW-001"

    async def test_create_device_as_visitor_forbidden(self, client, normal_user, user_token, seed_device_types):
        resp = await client.post(
            "/api/v1/devices",
            json={"name": "Test", "code": "T-001", "device_type": "meter"},
            headers=auth_header(user_token),
        )
        assert resp.status_code == 403


class TestUpdateDevice:
    async def test_update_device(self, client, admin_user, admin_token, seed_devices):
        device = seed_devices[0]
        resp = await client.put(
            f"/api/v1/devices/{device.id}",
            json={"location": "新位置"},
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        assert resp.json()["location"] == "新位置"

    async def test_update_nonexistent_device(self, client, admin_user, admin_token):
        resp = await client.put(
            "/api/v1/devices/99999",
            json={"location": "nowhere"},
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 404


class TestGetDevice:
    async def test_get_single_device(self, client, admin_user, admin_token, seed_devices):
        device = seed_devices[0]
        resp = await client.get(f"/api/v1/devices/{device.id}", headers=auth_header(admin_token))
        assert resp.status_code == 200
        assert resp.json()["id"] == device.id

    async def test_get_nonexistent_device(self, client, admin_user, admin_token):
        resp = await client.get("/api/v1/devices/99999", headers=auth_header(admin_token))
        assert resp.status_code == 404