import { MigrationInterface, QueryRunner } from 'typeorm';

import { CONTRACT_TEMPLATE_DEFAULTS } from '../seed/data/contract-template-defaults';

/**
 * Creates freight.contract_templates — the six editable contract document
 * templates (direction × freight type) whose dynamic articles drive the
 * generated contract PDF — and seeds them from the EDR reference contract
 * documents. Seeding is idempotent (ON CONFLICT (code) DO NOTHING) so admin
 * edits are never overwritten by redeploys.
 */
export class CreateContractTemplates2090000000000 implements MigrationInterface {
  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      CREATE TABLE IF NOT EXISTS freight.contract_templates (
        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        code            VARCHAR(40) NOT NULL,
        name            VARCHAR(200) NOT NULL,
        description     TEXT,
        document_title  VARCHAR(300) NOT NULL,
        whereas_clauses JSONB NOT NULL DEFAULT '[]',
        articles        JSONB NOT NULL DEFAULT '[]',
        is_active       BOOLEAN NOT NULL DEFAULT TRUE,
        created_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
        deleted_at      TIMESTAMPTZ,
        CONSTRAINT uq_contract_templates_code UNIQUE (code)
      );
    `);

    for (const seed of CONTRACT_TEMPLATE_DEFAULTS) {
      const articles = seed.articles.map((article, index) => ({
        ...article,
        order: index + 1,
      }));
      await queryRunner.query(
        `
        INSERT INTO freight.contract_templates
          (code, name, description, document_title, whereas_clauses, articles)
        VALUES ($1, $2, $3, $4, $5::jsonb, $6::jsonb)
        ON CONFLICT (code) DO NOTHING;
        `,
        [
          seed.code,
          seed.name,
          seed.description,
          seed.documentTitle,
          JSON.stringify(seed.whereasClauses),
          JSON.stringify(articles),
        ],
      );
    }
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`DROP TABLE IF EXISTS freight.contract_templates;`);
  }
}