import { MigrationInterface, QueryRunner } from 'typeorm';

export class PhaseF31FamilyCatalogSync1789844500000 implements MigrationInterface {
  name = 'PhaseF31FamilyCatalogSync1789844500000';

  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      CREATE OR REPLACE FUNCTION sync_asset_inventory_family_catalog()
      RETURNS trigger
      LANGUAGE plpgsql
      AS $$
      BEGIN
        DELETE FROM finding_catalog_asset_overrides
        WHERE asset_id=NEW.id
          AND reason LIKE 'F3.1 familia técnica:%';

        IF NEW.inventory_family_id IS NOT NULL THEN
          INSERT INTO finding_catalog_asset_overrides (
            asset_id,catalog_item_id,is_enabled,reason,created_by,updated_by
          )
          SELECT
            NEW.id,mapping.catalog_item_id,true,
            'F3.1 familia técnica: catálogo contextual automático',
            NEW.created_by,NEW.updated_by
          FROM finding_catalog_item_inventory_families mapping
          WHERE mapping.inventory_family_id=NEW.inventory_family_id
          ON CONFLICT (asset_id,catalog_item_id) DO UPDATE SET
            is_enabled=true,
            reason='F3.1 familia técnica: catálogo contextual automático',
            updated_by=NEW.updated_by,
            updated_at=CURRENT_TIMESTAMP;
        END IF;
        RETURN NEW;
      END;
      $$
    `);
    await queryRunner.query(`
      CREATE TRIGGER trg_assets_inventory_family_catalog
      AFTER INSERT OR UPDATE OF inventory_family_id ON assets
      FOR EACH ROW EXECUTE FUNCTION sync_asset_inventory_family_catalog()
    `);

    await queryRunner.query(`
      CREATE OR REPLACE FUNCTION sync_inventory_family_mapping_assets()
      RETURNS trigger
      LANGUAGE plpgsql
      AS $$
      BEGIN
        IF TG_OP='DELETE' THEN
          DELETE FROM finding_catalog_asset_overrides override_record
          USING assets asset
          WHERE override_record.asset_id=asset.id
            AND asset.inventory_family_id=OLD.inventory_family_id
            AND override_record.catalog_item_id=OLD.catalog_item_id
            AND override_record.reason LIKE 'F3.1 familia técnica:%';
          RETURN OLD;
        END IF;

        INSERT INTO finding_catalog_asset_overrides (
          asset_id,catalog_item_id,is_enabled,reason,created_by,updated_by
        )
        SELECT
          asset.id,NEW.catalog_item_id,true,
          'F3.1 familia técnica: catálogo contextual automático',
          asset.created_by,asset.updated_by
        FROM assets asset
        WHERE asset.inventory_family_id=NEW.inventory_family_id
        ON CONFLICT (asset_id,catalog_item_id) DO UPDATE SET
          is_enabled=true,
          reason='F3.1 familia técnica: catálogo contextual automático',
          updated_at=CURRENT_TIMESTAMP;
        RETURN NEW;
      END;
      $$
    `);
    await queryRunner.query(`
      CREATE TRIGGER trg_inventory_family_mapping_assets
      AFTER INSERT OR DELETE ON finding_catalog_item_inventory_families
      FOR EACH ROW EXECUTE FUNCTION sync_inventory_family_mapping_assets()
    `);

    await queryRunner.query(`
      INSERT INTO finding_catalog_asset_overrides (
        asset_id,catalog_item_id,is_enabled,reason,created_by,updated_by
      )
      SELECT
        asset.id,mapping.catalog_item_id,true,
        'F3.1 familia técnica: catálogo contextual automático',
        asset.created_by,asset.updated_by
      FROM assets asset
      JOIN finding_catalog_item_inventory_families mapping
        ON mapping.inventory_family_id=asset.inventory_family_id
      WHERE asset.inventory_family_id IS NOT NULL
      ON CONFLICT (asset_id,catalog_item_id) DO UPDATE SET
        is_enabled=true,
        reason='F3.1 familia técnica: catálogo contextual automático',
        updated_at=CURRENT_TIMESTAMP
    `);
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query('DROP TRIGGER IF EXISTS trg_inventory_family_mapping_assets ON finding_catalog_item_inventory_families');
    await queryRunner.query('DROP FUNCTION IF EXISTS sync_inventory_family_mapping_assets()');
    await queryRunner.query('DROP TRIGGER IF EXISTS trg_assets_inventory_family_catalog ON assets');
    await queryRunner.query('DROP FUNCTION IF EXISTS sync_asset_inventory_family_catalog()');
  }
}