import type { Context } from 'telegraf';
import type { Database } from 'better-sqlite3';
import { todayString } from '../../utils/date';
import { getScheduleByDate, updateScheduleStatus } from '../../db/schedule';
import { getSessionByDate } from '../../db/sessions';

export function handleSkip(db: Database) {
  return async (ctx: Context) => {
    const text = (ctx.message as { text?: string })?.text ?? '';
    const reason = text.split(/\s+/).slice(1).join(' ') || null;

    const today = todayString();

    const session = getSessionByDate(db, today);
    if (session) {
      await ctx.reply(`You already logged a session today (${session.duration_min}m). Nothing to skip.`);
      return;
    }

    const scheduled = getScheduleByDate(db, today);
    if (!scheduled) {
      await ctx.reply('No session scheduled for today anyway.');
      return;
    }

    if (scheduled.status !== 'pending') {
      await ctx.reply(`Today's session is already marked as ${scheduled.status}.`);
      return;
    }

    updateScheduleStatus(db, today, 'skipped', reason);
    const msg = reason ? `Skipped today (${reason}). The AI will account for this next time you reschedule.` : 'Skipped today. The AI will account for this next time you reschedule.';
    await ctx.reply(msg);
  };
}