from fam_core.chat_handler.chat_handler import _format_events


def test_multiple_persons_and_attention():
    rows = [{
        "ts": "2026-08-21 16:11:25", "camera_name": "客厅",
        "description": "两人在客厅玩耍",
        "person_list_json": '["汤圆", "爷爷"]',
        "is_attention_event": True,
    }]
    out = _format_events(rows)
    assert out == "[2026-08-21 16:11 客厅] 汤圆,爷爷: 两人在客厅玩耍 [关注事件]"


def test_no_person_defaults_to_wu_ren():
    rows = [{
        "ts": "2026-08-21 16:11:25", "camera_name": "客厅",
        "description": "空房间", "person_list_json": '[]',
        "is_attention_event": False,
    }]
    out = _format_events(rows)
    assert "无人:" in out
    assert "[关注事件]" not in out


def test_person_list_already_decoded_list():
    """pymysql 某些驱动/字段类型可能已经把 JSON 解码成 list，不是字符串。"""
    rows = [{
        "ts": "2026-08-21 16:11:25", "camera_name": "客厅",
        "description": "在客厅", "person_list_json": ["汤圆"],
        "is_attention_event": False,
    }]
    out = _format_events(rows)
    assert "汤圆:" in out


def test_malformed_person_list_json_degrades_gracefully():
    rows = [{
        "ts": "2026-08-21 16:11:25", "camera_name": "客厅",
        "description": "在客厅", "person_list_json": "not valid json",
        "is_attention_event": False,
    }]
    out = _format_events(rows)
    assert "无人:" in out


def test_multiple_rows_joined_by_newline():
    rows = [
        {"ts": "2026-08-21 16:11:25", "camera_name": "客厅",
         "description": "第一条", "person_list_json": '["汤圆"]', "is_attention_event": False},
        {"ts": "2026-08-21 16:12:00", "camera_name": "客厅",
         "description": "第二条", "person_list_json": '["汤圆"]', "is_attention_event": False},
    ]
    out = _format_events(rows)
    assert len(out.split("\n")) == 2