import type { MigrationPlanWithAuthoringSurface } from '@prisma-next/framework-components/control';
import { Migration, type MigrationMeta } from '@prisma-next/migration-tools/migration';
import type { AnyMongoMigrationOperation } from '@prisma-next/mongo-query-ast/control';
import type { OpFactoryCall } from './op-factory-call';
import { renderOps } from './render-ops';
import { renderCallsToTypeScript } from './render-typescript';

/**
 * Planner-produced Mongo migration, returned by `MongoMigrationPlanner.plan(...)`
 * and `MongoMigrationPlanner.emptyMigration(...)`.
 *
 * Unlike user-authored migrations (which extend `MongoMigration` from
 * `@prisma-next/family-mongo/migration`), this class lives inside the target
 * and holds the richer authoring IR (`OpFactoryCall[]`) needed to render
 * itself back to TypeScript source. It implements
 * `MigrationPlanWithAuthoringSurface` so that the CLI can uniformly ask any
 * planner result to serialize itself to a `migration.ts`.
 *
 * Extends the framework `Migration` base class directly (not
 * `MongoMigration`) because `MongoMigration` lives in `@prisma-next/family-mongo`,
 * which depends on this package — extending it here would create a dependency
 * cycle.
 */
export class PlannerProducedMongoMigration
  extends Migration<AnyMongoMigrationOperation>
  implements MigrationPlanWithAuthoringSurface
{
  readonly targetId = 'mongo' as const;

  constructor(
    private readonly calls: readonly OpFactoryCall[],
    private readonly meta: MigrationMeta,
  ) {
    super();
  }

  override get operations(): readonly AnyMongoMigrationOperation[] {
    return renderOps(this.calls);
  }

  override describe(): MigrationMeta {
    return this.meta;
  }

  renderTypeScript(): string {
    return renderCallsToTypeScript(this.calls, {
      from: this.meta.from,
      to: this.meta.to,
    });
  }
}