// draftAutoApprove.js
// Каждый день в 07:00 МСК переводит все статьи status='draft' → 'published'
// и ставит их на ближайшие publish_slots канала 1.

const { query } = require('./src/config/db');
const { scheduleForArticle } = require('./src/services/articleAutoPublish');

const AUTO_APPROVE_HOUR_MSK = 7;
let lastRunDate = null;

async function runDraftAutoApprove() {
  try {
    const { rows: drafts } = await query(
      `SELECT id, title, category FROM articles WHERE status='draft' ORDER BY created_at ASC`
    );

    if (!drafts.length) {
      console.log('[DraftApprove] no drafts to approve');
      return;
    }

    console.log(`[DraftApprove] approving ${drafts.length} drafts`);

    for (const draft of drafts) {
      await query(
        `UPDATE articles SET status='published', published_at=NOW() WHERE id=$1`,
        [draft.id]
      );
      await scheduleForArticle(draft.id);
      console.log(`[DraftApprove] approved article=${draft.id} "${draft.title.slice(0, 50)}"`);
    }
  } catch (err) {
    console.error('[DraftApprove] error:', err.message);
  }
}

function startDraftAutoApproveScheduler() {
  console.log('[DraftApprove] scheduler started (auto-approve at 07:00 MSK)');

  setInterval(() => {
    const now = new Date();
    const msk = new Date(now.getTime() + 3 * 60 * 60 * 1000);
    const hour   = msk.getUTCHours();
    const minute = msk.getUTCMinutes();
    const dateStr = msk.toISOString().slice(0, 10);

    if (hour === AUTO_APPROVE_HOUR_MSK && minute === 0 && lastRunDate !== dateStr) {
      lastRunDate = dateStr;
      console.log(`[DraftApprove] triggered at ${msk.toISOString()}`);
      runDraftAutoApprove();
    }
  }, 60_000);
}

module.exports = { startDraftAutoApproveScheduler, runDraftAutoApprove };