import type { CampaignStatsToday } from '@warmbox/shared';

export function formatChartDate(iso: string): string {
  const d = new Date(`${iso}T12:00:00`);
  return d.toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
}

export function last7DaysIsoRange(): { from: string; to: string } {
  const to = new Date();
  const from = new Date();
  from.setDate(from.getDate() - 6);
  const toIso = to.toISOString().slice(0, 10);
  const fromIso = from.toISOString().slice(0, 10);
  return { from: fromIso, to: toIso };
}

export type DailyChartRow = {
  dayIndex: number;
  label: string;
  date: string;
  plannedSends: number;
  plannedReplies: number;
  sends: number;
  replies: number;
  spam: number;
  inbox: number;
};

export function mapDailyStatToChartRow(stat: CampaignStatsToday): DailyChartRow {
  return {
    dayIndex: stat.dayIndex,
    label: formatChartDate(stat.date),
    date: stat.date,
    plannedSends: stat.planned.sends,
    plannedReplies: stat.planned.replies,
    sends: stat.actual.sends,
    replies: stat.actual.replies,
    spam: stat.actual.spamDetected,
    inbox: Math.max(0, stat.actual.sends - stat.actual.spamDetected),
  };
}