import pytest

from app import db
from app.models import Board, Card, CheckItem, Checklist, List


@pytest.mark.integration
class TestChecklistRoutes:
    """Test Checklist API routes"""

    def test_create_checklist_success(
        self, client, db_session, regular_user, auth_headers
    ):
        """Test creating a new checklist in a card"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.commit()

        response = client.post(
            f"/api/cards/{card.id}/checklists",
            headers=auth_headers,
            json={"name": "Tasks", "pos": 0},
        )

        assert response.status_code == 201
        data = response.get_json()
        assert data["name"] == "Tasks"
        assert data["card_id"] == card.id
        assert data["board_id"] == board.id

    def test_create_checklist_missing_name(
        self, client, db_session, regular_user, auth_headers
    ):
        """Test creating a checklist without name"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.commit()

        response = client.post(
            f"/api/cards/{card.id}/checklists",
            headers=auth_headers,
            json={"pos": 0},
        )

        assert response.status_code == 400

    def test_create_checklist_unauthorized(self, client, db_session, regular_user):
        """Test creating a checklist without authentication"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.commit()

        response = client.post(
            f"/api/cards/{card.id}/checklists",
            json={"name": "Tasks"},
        )

        assert response.status_code == 401

    def test_create_check_item_success(
        self, client, db_session, regular_user, auth_headers
    ):
        """Test creating a new check item in a checklist"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.flush()

        checklist = Checklist(name="Tasks", board_id=board.id, card_id=card.id, pos=0)
        db_session.add(checklist)
        db_session.commit()

        response = client.post(
            f"/api/checklists/{checklist.id}/items",
            headers=auth_headers,
            json={"name": "Complete task", "pos": 0, "state": "incomplete"},
        )

        assert response.status_code == 201
        data = response.get_json()
        assert data["name"] == "Complete task"
        assert data["checklist_id"] == checklist.id
        assert data["state"] == "incomplete"

    def test_create_check_item_missing_name(
        self, client, db_session, regular_user, auth_headers
    ):
        """Test creating a check item without name"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.flush()

        checklist = Checklist(name="Tasks", board_id=board.id, card_id=card.id, pos=0)
        db_session.add(checklist)
        db_session.commit()

        response = client.post(
            f"/api/checklists/{checklist.id}/items",
            headers=auth_headers,
            json={"state": "incomplete"},
        )

        assert response.status_code == 400

    def test_create_check_item_unauthorized(self, client, db_session, regular_user):
        """Test creating a check item without authentication"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.flush()

        checklist = Checklist(name="Tasks", board_id=board.id, card_id=card.id, pos=0)
        db_session.add(checklist)
        db_session.commit()

        response = client.post(
            f"/api/checklists/{checklist.id}/items",
            json={"name": "Complete task"},
        )

        assert response.status_code == 401

    def test_update_check_item_success(
        self, client, db_session, regular_user, auth_headers
    ):
        """Test updating a check item (toggle state)"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.flush()

        checklist = Checklist(name="Tasks", board_id=board.id, card_id=card.id, pos=0)
        db_session.add(checklist)
        db_session.flush()

        item = CheckItem(
            name="Task", checklist_id=checklist.id, pos=0, state="incomplete"
        )
        db_session.add(item)
        db_session.commit()

        response = client.put(
            f"/api/check-items/{item.id}",
            headers=auth_headers,
            json={"state": "complete", "name": "Updated Task"},
        )

        assert response.status_code == 200
        data = response.get_json()
        assert data["state"] == "complete"
        assert data["name"] == "Updated Task"

    def test_update_check_item_not_found(self, client, db_session, auth_headers):
        """Test updating a non-existent check item"""
        response = client.put(
            "/api/check-items/99999",
            headers=auth_headers,
            json={"state": "complete"},
        )

        assert response.status_code == 404

    def test_delete_checklist_success(
        self, client, db_session, regular_user, auth_headers
    ):
        """Test deleting a checklist"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.flush()

        checklist = Checklist(
            name="To Delete", board_id=board.id, card_id=card.id, pos=0
        )
        db_session.add(checklist)
        db_session.commit()

        response = client.delete(
            f"/api/checklists/{checklist.id}", headers=auth_headers
        )

        assert response.status_code == 200
        data = response.get_json()
        assert "message" in data

        # Verify checklist is deleted
        deleted_checklist = db.session.get(Checklist, checklist.id)
        assert deleted_checklist is None

    def test_delete_checklist_not_found(self, client, db_session, auth_headers):
        """Test deleting a non-existent checklist"""
        response = client.delete("/api/checklists/99999", headers=auth_headers)

        assert response.status_code == 404

    def test_delete_check_item_success(
        self, client, db_session, regular_user, auth_headers
    ):
        """Test deleting a check item"""
        board = Board(name="Test Board", user_id=regular_user.id)
        db_session.add(board)
        db_session.flush()

        lst = List(name="To Do", board_id=board.id, pos=0)
        db_session.add(lst)
        db_session.flush()

        card = Card(name="Test Card", board_id=board.id, list_id=lst.id, pos=0)
        db_session.add(card)
        db_session.flush()

        checklist = Checklist(name="Tasks", board_id=board.id, card_id=card.id, pos=0)
        db_session.add(checklist)
        db_session.flush()

        item = CheckItem(
            name="Task", checklist_id=checklist.id, pos=0, state="incomplete"
        )
        db_session.add(item)
        db_session.commit()

        response = client.delete(f"/api/check-items/{item.id}", headers=auth_headers)

        assert response.status_code == 200
        data = response.get_json()
        assert "message" in data

        # Verify check item is deleted
        deleted_item = db.session.get(CheckItem, item.id)
        assert deleted_item is None

    def test_delete_check_item_not_found(self, client, db_session, auth_headers):
        """Test deleting a non-existent check item"""
        response = client.delete("/api/check-items/99999", headers=auth_headers)

        assert response.status_code == 404