import { Injectable } from '@nestjs/common';
import { ImmichEnvironment, ImmichWorker, LogLevel } from 'src/enum';
import { EnvData, IConfigRepository } from 'src/interfaces/config.interface';
import { DatabaseExtension } from 'src/interfaces/database.interface';
import { setDifference } from 'src/utils/set';

// TODO replace src/config validation with class-validator, here

const productionKeys = {
  client:
    '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',
  server:
    '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',
};

const stagingKeys = {
  client:
    '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',
  server:
    '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',
};

const WORKER_TYPES = new Set(Object.values(ImmichWorker));

const asSet = (value: string | undefined, defaults: ImmichWorker[]) => {
  const values = (value || '').replaceAll(/\s/g, '').split(',').filter(Boolean);
  return new Set(values.length === 0 ? defaults : (values as ImmichWorker[]));
};

@Injectable()
export class ConfigRepository implements IConfigRepository {
  getEnv(): EnvData {
    const included = asSet(process.env.IMMICH_WORKERS_INCLUDE, [ImmichWorker.API, ImmichWorker.MICROSERVICES]);
    const excluded = asSet(process.env.IMMICH_WORKERS_EXCLUDE, []);
    const workers = [...setDifference(included, excluded)];
    for (const worker of workers) {
      if (!WORKER_TYPES.has(worker)) {
        throw new Error(`Invalid worker(s) found: ${workers.join(',')}`);
      }
    }

    const environment = process.env.IMMICH_ENV as ImmichEnvironment;
    const isProd = environment === ImmichEnvironment.PRODUCTION;

    return {
      port: Number(process.env.IMMICH_PORT) || 3001,
      environment,
      configFile: process.env.IMMICH_CONFIG_FILE,
      logLevel: process.env.IMMICH_LOG_LEVEL as LogLevel,

      buildMetadata: {
        build: process.env.IMMICH_BUILD,
        buildUrl: process.env.IMMICH_BUILD_URL,
        buildImage: process.env.IMMICH_BUILD_IMAGE,
        buildImageUrl: process.env.IMMICH_BUILD_IMAGE_URL,
        repository: process.env.IMMICH_REPOSITORY,
        repositoryUrl: process.env.IMMICH_REPOSITORY_URL,
        sourceRef: process.env.IMMICH_SOURCE_REF,
        sourceCommit: process.env.IMMICH_SOURCE_COMMIT,
        sourceUrl: process.env.IMMICH_SOURCE_URL,
        thirdPartySourceUrl: process.env.IMMICH_THIRD_PARTY_SOURCE_URL,
        thirdPartyBugFeatureUrl: process.env.IMMICH_THIRD_PARTY_BUG_FEATURE_URL,
        thirdPartyDocumentationUrl: process.env.IMMICH_THIRD_PARTY_DOCUMENTATION_URL,
        thirdPartySupportUrl: process.env.IMMICH_THIRD_PARTY_SUPPORT_URL,
      },

      database: {
        url: process.env.DB_URL,
        host: process.env.DB_HOSTNAME || 'database',
        port: Number(process.env.DB_PORT) || 5432,
        username: process.env.DB_USERNAME || 'postgres',
        password: process.env.DB_PASSWORD || 'postgres',
        name: process.env.DB_DATABASE_NAME || 'immich',

        skipMigrations: process.env.DB_SKIP_MIGRATIONS === 'true',
        vectorExtension:
          process.env.DB_VECTOR_EXTENSION === 'pgvector' ? DatabaseExtension.VECTOR : DatabaseExtension.VECTORS,
      },

      licensePublicKey: isProd ? productionKeys : stagingKeys,

      storage: {
        ignoreMountCheckErrors: process.env.IMMICH_IGNORE_MOUNT_CHECK_ERRORS === 'true',
      },

      workers,

      noColor: !!process.env.NO_COLOR,
    };
  }
}