/**
 * Chart data transformation utilities for baby sleep tracker
 */
/**
 * Build timetable slots for visualization
 * @param slots - raw timetable slots from API
 * @returns grouped slots by date
 */
export function buildTimetableSlots(slots) {
    return slots.reduce((acc, slot) => {
        if (!acc[slot.date]) {
            acc[slot.date] = [];
        }
        acc[slot.date].push(slot);
        return acc;
    }, {});
}
/**
 * Transform wakeup minutes for Recharts LineChart
 * @param days - wakeup/bedtime data from API
 * @returns array formatted for LineChart
 */
export function computeWakeupMinutes(days, wakeupRef = "04:00") {
    return days.map((day) => ({
        date: day.date,
        minutes: day.wakeup_minutes ?? 0,
        time: day.wakeup_minutes !== null
            ? formatMinutesAfter(day.wakeup_minutes, wakeupRef)
            : "N/A",
    }));
}
/**
 * Transform bedtime minutes for Recharts LineChart
 * @param days - wakeup/bedtime data from API
 * @returns array formatted for LineChart
 */
export function computeBedtimeMinutes(days, bedtimeRef = "19:00") {
    return days.map((day) => ({
        date: day.date,
        minutes: day.bedtime_minutes ?? 0,
        time: day.bedtime_minutes !== null
            ? formatMinutesAfter(day.bedtime_minutes, bedtimeRef)
            : "N/A",
    }));
}
/**
 * Transform daily summary for Recharts BarChart (vertical layout)
 * @param days - daily summary data from API
 * @returns array formatted for BarChart
 */
export function computeDailySummaryData(days) {
    return days.map((day) => ({
        date: day.date,
        daySleep: day.day_minutes,
        nightSleep: day.night_minutes,
        total: day.total_minutes,
    }));
}
/**
 * Calculate average summary stats from daily data
 * @param days - daily summary data from API
 * @returns averages for total, day, and night sleep
 */
export function computeAverageStats(days) {
    if (!days.length) {
        return { avgTotal: 0, avgDay: 0, avgNight: 0, count: 0 };
    }
    const totals = days.reduce((acc, day) => ({
        total: acc.total + day.total_minutes,
        day: acc.day + day.day_minutes,
        night: acc.night + day.night_minutes,
    }), { total: 0, day: 0, night: 0 });
    const count = days.length;
    return {
        avgTotal: Math.round(totals.total / count),
        avgDay: Math.round(totals.day / count),
        avgNight: Math.round(totals.night / count),
        count,
    };
}
/**
 * Convert minutes after reference to clock time string
 * Internal helper - kept for chartHelpers module
 */
function formatMinutesAfter(minutes, reference) {
    const [refHours, refMinutes] = reference.split(":").map(Number);
    const totalRefMinutes = refHours * 60 + refMinutes;
    const targetMinutes = totalRefMinutes + minutes;
    const normalizedMinutes = ((targetMinutes % 1440) + 1440) % 1440;
    const hours = Math.floor(normalizedMinutes / 60);
    const mins = normalizedMinutes % 60;
    return `${String(hours).padStart(2, "0")}:${String(mins).padStart(2, "0")}`;
}
/**
 * Reverse date order (newest first for charts)
 * @param days - array of day data
 * @returns reversed array
 */
export function reverseDateOrder(days) {
    return [...days].reverse();
}
/**
 * Filter days to only include those with data
 * @param days - array of day data
 * @returns filtered array
 */
export function filterDaysWithData(days) {
    return days.filter((day) => (day.total_minutes ?? 0) > 0);
}