import { createHash } from 'node:crypto';
import { MigrationInterface, QueryRunner } from 'typeorm';
import {
  F31_INSTALLATION_FAMILIES,
  F31_UNIVERSAL_FINDINGS,
} from '../../reference-data/f3-1-inventory-excel';

const INSTALLATION_OTHER_CODE = 'F31-INST-OTRO';

function subOtherCode(parentCode: string): string {
  return `F31-SUB-OTRO-${createHash('sha1').update(parentCode).digest('hex').slice(0, 12).toUpperCase()}`;
}

export class PhaseF31OtherInventoryFamilies1789844800000 implements MigrationInterface {
  name = 'PhaseF31OtherInventoryFamilies1789844800000';

  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      INSERT INTO inventory_families(
        code,name,level,legacy_type_code,information_labels,source_reference,is_active
      ) VALUES ($1::varchar,'Otro / no catalogado','INSTALLATION',NULL,'[]'::jsonb,
        'SYSTEM:F3.1:OTHER',true)
      ON CONFLICT (code) DO UPDATE SET
        name=EXCLUDED.name,is_active=true,updated_at=CURRENT_TIMESTAMP
    `, [INSTALLATION_OTHER_CODE]);

    for (const parent of F31_INSTALLATION_FAMILIES) {
      const code = subOtherCode(parent.code);
      await queryRunner.query(`
        INSERT INTO inventory_families(
          code,name,level,legacy_type_code,information_labels,source_reference,is_active
        ) VALUES ($1::varchar,'Otro / no catalogado','SUBINSTALLATION',NULL,'[]'::jsonb,
          $2::varchar,true)
        ON CONFLICT (code) DO UPDATE SET
          name=EXCLUDED.name,is_active=true,updated_at=CURRENT_TIMESTAMP
      `, [code, `SYSTEM:F3.1:OTHER:${parent.code}`]);
      await queryRunner.query(`
        INSERT INTO inventory_family_parent_rules(child_family_id,parent_family_id)
        SELECT child.id,parent.id
        FROM inventory_families child
        JOIN inventory_families parent ON parent.code=$2::varchar
        WHERE child.code=$1::varchar
        ON CONFLICT (child_family_id) DO UPDATE
        SET parent_family_id=EXCLUDED.parent_family_id
      `, [code, parent.code]);
    }

    // Si la Instalación misma es "Otro", también necesita una opción "Otro" hija.
    const rootSubOther = subOtherCode(INSTALLATION_OTHER_CODE);
    await queryRunner.query(`
      INSERT INTO inventory_families(
        code,name,level,legacy_type_code,information_labels,source_reference,is_active
      ) VALUES ($1::varchar,'Otro / no catalogado','SUBINSTALLATION',NULL,'[]'::jsonb,
        'SYSTEM:F3.1:OTHER:F31-INST-OTRO',true)
      ON CONFLICT (code) DO UPDATE SET
        name=EXCLUDED.name,is_active=true,updated_at=CURRENT_TIMESTAMP
    `, [rootSubOther]);
    await queryRunner.query(`
      INSERT INTO inventory_family_parent_rules(child_family_id,parent_family_id)
      SELECT child.id,parent.id
      FROM inventory_families child
      JOIN inventory_families parent ON parent.code=$2::varchar
      WHERE child.code=$1::varchar
      ON CONFLICT (child_family_id) DO UPDATE
      SET parent_family_id=EXCLUDED.parent_family_id
    `, [rootSubOther, INSTALLATION_OTHER_CODE]);

    const otherCodes = [
      INSTALLATION_OTHER_CODE,
      ...F31_INSTALLATION_FAMILIES.map((parent) => subOtherCode(parent.code)),
      rootSubOther,
    ];
    for (const familyCode of otherCodes) {
      for (const title of F31_UNIVERSAL_FINDINGS) {
        await queryRunner.query(`
          INSERT INTO finding_catalog_item_inventory_families(catalog_item_id,inventory_family_id)
          SELECT item.id,family.id
          FROM finding_catalog_items item
          JOIN finding_categories category ON category.id=item.category_id
          CROSS JOIN inventory_families family
          WHERE lower(category.code)='app26r2'
            AND lower(btrim(item.title))=lower(btrim($2::text))
            AND family.code=$1::varchar
          ON CONFLICT (catalog_item_id,inventory_family_id) DO NOTHING
        `, [familyCode, title]);
      }
    }
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    const codes = [
      INSTALLATION_OTHER_CODE,
      ...F31_INSTALLATION_FAMILIES.map((parent) => subOtherCode(parent.code)),
      subOtherCode(INSTALLATION_OTHER_CODE),
    ];
    await queryRunner.query(`
      DELETE FROM inventory_families
      WHERE code=ANY($1::varchar[])
        AND NOT EXISTS (SELECT 1 FROM assets asset WHERE asset.inventory_family_id=inventory_families.id)
    `, [codes]);
  }
}