import json


class TestIndexRoute:
    def test_returns_200(self, flask_client):
        response = flask_client.get("/")
        assert response.status_code == 200

    def test_returns_html(self, flask_client):
        response = flask_client.get("/")
        assert b"NHL Scoreboard" in response.data


class TestScoreboardRoute:
    def test_returns_200(self, flask_client):
        response = flask_client.get("/scoreboard")
        assert response.status_code == 200

    def test_returns_json_with_expected_keys(self, flask_client):
        response = flask_client.get("/scoreboard")
        data = json.loads(response.data)
        assert "live_games" in data
        assert "pre_games" in data
        assert "final_games" in data

    def test_live_games_have_required_fields(self, flask_client):
        response = flask_client.get("/scoreboard")
        data = json.loads(response.data)
        if data["live_games"]:
            game = data["live_games"][0]
            assert "Home Team" in game
            assert "Away Team" in game
            assert "Home Score" in game
            assert "Away Score" in game
            assert "Game State" in game
            assert game["Game State"] == "LIVE"

    def test_missing_file_returns_error(self, flask_client, monkeypatch):
        import app.routes as routes

        monkeypatch.setattr(routes, "SCOREBOARD_DATA_FILE", "/nonexistent/path.json")
        response = flask_client.get("/scoreboard")
        data = json.loads(response.data)
        assert "error" in data

    def test_invalid_json_returns_error(self, flask_client, monkeypatch, tmp_path):
        import app.routes as routes

        bad_file = tmp_path / "bad.json"
        bad_file.write_text("not valid json {{{")
        monkeypatch.setattr(routes, "SCOREBOARD_DATA_FILE", str(bad_file))
        response = flask_client.get("/scoreboard")
        data = json.loads(response.data)
        assert "error" in data

    def test_null_json_returns_error(self, flask_client, monkeypatch, tmp_path):
        import app.routes as routes

        null_file = tmp_path / "null.json"
        null_file.write_text("null")
        monkeypatch.setattr(routes, "SCOREBOARD_DATA_FILE", str(null_file))
        response = flask_client.get("/scoreboard")
        data = json.loads(response.data)
        assert "error" in data