import {
  AbstractPowerSyncDatabase,
  AbstractPowerSyncDatabaseOpenFactory,
  PowerSyncDatabaseOptions,
  PowerSyncOpenFactoryOptions
} from '@powersync/common';
import {
  PowerSyncDatabase,
  WebPowerSyncDatabaseOptions,
  WebPowerSyncFlags,
  resolveWebPowerSyncFlags
} from '../../db/PowerSyncDatabase.js';

/**
 * {@link WebPowerSyncFlags}
 * Maintaining export for consistency with API from previous versions
 *  */
export interface WebPowerSyncOpenFlags extends WebPowerSyncFlags {}

export interface WebPowerSyncOpenFactoryOptions extends PowerSyncOpenFactoryOptions {
  flags?: WebPowerSyncOpenFlags;
}

/**
 * Intermediate PowerSync Database Open factory for Web which uses a mock
 * SSR DB Adapter if running on server side.
 * Most SQLite DB implementations only run on client side, this will safely return
 * empty query results in SSR which will allow for generating server partial views.
 */
export abstract class AbstractWebPowerSyncDatabaseOpenFactory extends AbstractPowerSyncDatabaseOpenFactory {
  constructor(protected options: WebPowerSyncOpenFactoryOptions) {
    super(options);
  }

  generateOptions(): WebPowerSyncDatabaseOptions {
    return {
      ...this.options,
      database: this.openDB(),
      schema: this.schema,
      flags: resolveWebPowerSyncFlags(this.options.flags)
    };
  }

  generateInstance(options: PowerSyncDatabaseOptions): AbstractPowerSyncDatabase {
    return new PowerSyncDatabase(options);
  }
}