import json
from pathlib import Path

from webapp.telegram_targets import (
    default_target_selection,
    load_telegram_target_catalog,
    resolve_target_config,
)


def test_multi_bot_catalog_picks_first_marked_defaults(tmp_path: Path) -> None:
    config_dir = tmp_path / "config"
    config_dir.mkdir()
    (config_dir / "telegram_config.json").write_text(
        json.dumps(
            {
                "bots": [
                    {
                        "display_name": "Bot A",
                        "token": "token-a",
                        "default": True,
                        "channels": [
                            {"display_name": "Channel A1", "channel_id": "-1001", "default": True},
                            {"display_name": "Channel A2", "channel_id": "-1002", "default": True},
                        ],
                    },
                    {
                        "display_name": "Bot B",
                        "token": "token-b",
                        "default": True,
                        "channels": [
                            {"display_name": "Channel B1", "channel_id": "-2001", "default": True},
                        ],
                    },
                ]
            }
        ),
        encoding="utf-8",
    )

    catalog = load_telegram_target_catalog(config_dir)

    assert default_target_selection(catalog) == ("token-a", "-1001")


def test_resolve_target_config_uses_selected_bot_id_and_chat_id(tmp_path: Path) -> None:
    config_dir = tmp_path / "config"
    config_dir.mkdir()
    (config_dir / "telegram_config.json").write_text(
        json.dumps(
            {
                "bots": [
                    {
                        "display_name": "Bot A",
                        "token": "token-a",
                        "channels": [
                            {
                                "display_name": "Channel A1",
                                "channel_id": "-1001",
                                "channel_username": "public_a",
                                "discussion_group_id": "-2001",
                            },
                        ],
                    }
                ]
            }
        ),
        encoding="utf-8",
    )

    catalog = load_telegram_target_catalog(config_dir)
    config = resolve_target_config(catalog, "token-a", "-1001")

    assert config.bot_token == "token-a"
    assert config.chat_id == "-1001"
    assert config.channel_username == "public_a"
    assert config.discussion_group_id == "-2001"


def test_telegram_config_requires_top_level_bots_list(tmp_path: Path) -> None:
    config_dir = tmp_path / "config"
    config_dir.mkdir()
    (config_dir / "telegram_config.json").write_text(
        json.dumps(
            {
                "bot_token": "legacy-token",
            }
        ),
        encoding="utf-8",
    )

    try:
        load_telegram_target_catalog(config_dir)
    except Exception as error:
        assert "top-level 'bots' list" in str(error)
    else:
        raise AssertionError("Expected invalid config format to be rejected.")