use module_runtime::{
    AnalyticsDateDimensionSnapshot, RuntimeProfileFieldError,
    build_analytics_date_dimension_from_date_key, parse_analytics_calendar_date_key,
    validate_analytics_date_dimension_date_key,
};

fn dimension(calendar_date: &str) -> AnalyticsDateDimensionSnapshot {
    let date_key = parse_analytics_calendar_date_key(calendar_date).expect("日期应可解析");
    build_analytics_date_dimension_from_date_key(date_key)
}

fn date_key(calendar_date: &str) -> i64 {
    parse_analytics_calendar_date_key(calendar_date).expect("日期应可解析")
}

#[test]
fn analytics_date_dimension_handles_leap_day() {
    // 中文注释：2024 是闰年，2 月应包含 29 日且属于 ISO 第 9 周。
    let snapshot = dimension("2024-02-29");

    assert_eq!(snapshot.calendar_date, "2024-02-29");
    assert_eq!(snapshot.weekday, 4);
    assert_eq!(snapshot.iso_week_key, 202409);
    assert_eq!(snapshot.week_start_date_key, date_key("2024-02-26"));
    assert_eq!(snapshot.week_end_date_key, date_key("2024-03-03"));
    assert_eq!(snapshot.month_key, 202402);
    assert_eq!(snapshot.month_start_date_key, date_key("2024-02-01"));
    assert_eq!(snapshot.month_end_date_key, date_key("2024-02-29"));
    assert_eq!(snapshot.quarter_key, 20241);
    assert_eq!(snapshot.year_key, 2024);
}

#[test]
fn analytics_date_dimension_uses_iso_week_year_across_year_boundary() {
    // 中文注释：2025-12-29 是周一，但 ISO week-year 已经进入 2026-W01。
    let snapshot = dimension("2025-12-29");

    assert_eq!(snapshot.calendar_date, "2025-12-29");
    assert_eq!(snapshot.weekday, 1);
    assert_eq!(snapshot.iso_week_key, 202601);
    assert_eq!(snapshot.week_start_date_key, date_key("2025-12-29"));
    assert_eq!(snapshot.week_end_date_key, date_key("2026-01-04"));
    assert_eq!(snapshot.month_key, 202512);
    assert_eq!(snapshot.quarter_key, 20254);
    assert_eq!(snapshot.year_key, 2025);
}

#[test]
fn analytics_date_dimension_handles_new_year_inside_iso_week() {
    // 中文注释：2026-01-01 仍落在 2026-W01，周范围跨自然年。
    let snapshot = dimension("2026-01-01");

    assert_eq!(snapshot.calendar_date, "2026-01-01");
    assert_eq!(snapshot.weekday, 4);
    assert_eq!(snapshot.iso_week_key, 202601);
    assert_eq!(snapshot.week_start_date_key, date_key("2025-12-29"));
    assert_eq!(snapshot.week_end_date_key, date_key("2026-01-04"));
    assert_eq!(snapshot.month_key, 202601);
    assert_eq!(snapshot.month_start_date_key, date_key("2026-01-01"));
    assert_eq!(snapshot.month_end_date_key, date_key("2026-01-31"));
    assert_eq!(snapshot.quarter_key, 20261);
    assert_eq!(snapshot.year_key, 2026);
}

#[test]
fn analytics_date_dimension_handles_q1_end() {
    // 中文注释：Q1 结束日应映射到 2026Q1，季度边界为 1 月 1 日到 3 月 31 日。
    let snapshot = dimension("2026-03-31");

    assert_eq!(snapshot.calendar_date, "2026-03-31");
    assert_eq!(snapshot.weekday, 2);
    assert_eq!(snapshot.iso_week_key, 202614);
    assert_eq!(snapshot.month_key, 202603);
    assert_eq!(snapshot.month_start_date_key, date_key("2026-03-01"));
    assert_eq!(snapshot.month_end_date_key, date_key("2026-03-31"));
    assert_eq!(snapshot.quarter_key, 20261);
    assert_eq!(snapshot.quarter_start_date_key, date_key("2026-01-01"));
    assert_eq!(snapshot.quarter_end_date_key, date_key("2026-03-31"));
    assert_eq!(snapshot.year_key, 2026);
}

#[test]
fn analytics_date_dimension_handles_q2_start() {
    // 中文注释：Q2 开始日应映射到 2026Q2，季度边界为 4 月 1 日到 6 月 30 日。
    let snapshot = dimension("2026-04-01");

    assert_eq!(snapshot.calendar_date, "2026-04-01");
    assert_eq!(snapshot.weekday, 3);
    assert_eq!(snapshot.iso_week_key, 202614);
    assert_eq!(snapshot.month_key, 202604);
    assert_eq!(snapshot.month_start_date_key, date_key("2026-04-01"));
    assert_eq!(snapshot.month_end_date_key, date_key("2026-04-30"));
    assert_eq!(snapshot.quarter_key, 20262);
    assert_eq!(snapshot.quarter_start_date_key, date_key("2026-04-01"));
    assert_eq!(snapshot.quarter_end_date_key, date_key("2026-06-30"));
    assert_eq!(snapshot.year_key, 2026);
}

#[test]
fn analytics_date_dimension_handles_year_end() {
    // 中文注释：2026 年末属于 2026-W53，且所有自然年边界应保持在 2026 年内。
    let snapshot = dimension("2026-12-31");

    assert_eq!(snapshot.calendar_date, "2026-12-31");
    assert_eq!(snapshot.weekday, 4);
    assert_eq!(snapshot.iso_week_key, 202653);
    assert_eq!(snapshot.week_start_date_key, date_key("2026-12-28"));
    assert_eq!(snapshot.week_end_date_key, date_key("2027-01-03"));
    assert_eq!(snapshot.month_key, 202612);
    assert_eq!(snapshot.month_start_date_key, date_key("2026-12-01"));
    assert_eq!(snapshot.month_end_date_key, date_key("2026-12-31"));
    assert_eq!(snapshot.quarter_key, 20264);
    assert_eq!(snapshot.quarter_start_date_key, date_key("2026-10-01"));
    assert_eq!(snapshot.quarter_end_date_key, date_key("2026-12-31"));
    assert_eq!(snapshot.year_key, 2026);
    assert_eq!(snapshot.year_start_date_key, date_key("2026-01-01"));
    assert_eq!(snapshot.year_end_date_key, date_key("2026-12-31"));
}

#[test]
fn analytics_date_key_parser_rejects_invalid_calendar_dates() {
    // 中文注释：非法日期和非 YYYY-MM-DD 字符串都必须解析失败，避免写入脏维表。
    assert_eq!(
        parse_analytics_calendar_date_key("2026-02-30"),
        Err(RuntimeProfileFieldError::InvalidAnalyticsCalendarDate)
    );
    assert_eq!(
        parse_analytics_calendar_date_key("bad"),
        Err(RuntimeProfileFieldError::InvalidAnalyticsCalendarDate)
    );
}

#[test]
fn analytics_date_dimension_rejects_out_of_supported_range() {
    // 中文注释：维表只允许受控业务日期范围，避免裸 date_key 极值进入 reducer 日历算法。
    assert_eq!(
        parse_analytics_calendar_date_key("1999-12-31"),
        Err(RuntimeProfileFieldError::InvalidAnalyticsCalendarDate)
    );
    assert_eq!(
        parse_analytics_calendar_date_key("2101-01-01"),
        Err(RuntimeProfileFieldError::InvalidAnalyticsCalendarDate)
    );
    assert_eq!(
        validate_analytics_date_dimension_date_key(i64::MAX),
        Err(RuntimeProfileFieldError::InvalidAnalyticsCalendarDate)
    );
}