"""Backup detail reads the saved pending-detail post-packaging value directly."""
from pathlib import Path
import unittest

from scripts.backfill_backup_post_packaging import post_pack_for_item


class BackupRemainingPackagingTest(unittest.TestCase):
    def test_backfill_matches_pending_post_packaging(self):
        item = {'material_code': 'M1', 'quantity': 1,
                'actual_quantity': 0, 'pre_pack_qty': 5000}
        self.assertEqual(post_pack_for_item(item, 3000, {}), 2000)
        item['actual_quantity'] = 3000
        item['pre_pack_qty'] = 0
        self.assertEqual(post_pack_for_item(item, 3000, {}), 0)

    def test_frontend_column_is_next_to_order_quantity(self):
        source = (Path(__file__).resolve().parents[1] / 'static/js/app.js').read_text(encoding='utf-8')
        self.assertIn('>下单数量</th>', source)
        self.assertIn('>剩余包材</th>', source)
        self.assertIn("remainingPack = b.post_pack_qty", source)
        purchase_source = (Path(__file__).resolve().parents[1] / 'routes/purchase.py').read_text(encoding='utf-8')
        self.assertIn("bm['post_pack_qty'] = post_pack_qty", purchase_source)

    def test_backup_detail_reads_saved_planning_sales_snapshot(self):
        source = purchase_source = (Path(__file__).resolve().parents[1] / 'routes/purchase.py').read_text(encoding='utf-8')
        frontend = (Path(__file__).resolve().parents[1] / 'static/js/app.js').read_text(encoding='utf-8')
        self.assertIn("row['sales_info']", source)
        detail_source = source[source.index('def purchase_backup_detail():'):source.index("@purchase_bp.route('/api/purchase/pending_export')")]
        self.assertIn("raw_snapshot = row.pop('sales_snapshot', None)", detail_source)
        self.assertNotIn('_build_planning_sales_snapshot(', detail_source)
        self.assertIn('sales_snapshot, sales_snapshot_at', source)
        self.assertIn('与计划预测详情默认数据完全同源', frontend)
        self.assertIn('<span>销量信息</span></div>', frontend)
        self.assertIn('class="pd-fields pd-fields-4col"', frontend)
        self.assertIn("formatPopupFieldValue(field[0], value, salesInfo)", frontend)
        self.assertIn("['库存可支撑天数', '库存可支撑天数']", frontend)
        self.assertIn('历史订单未保存销量快照', frontend)


if __name__ == '__main__':
    unittest.main()