@nestjs/config/dist/config.module.js

"use strict";
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};
var ConfigModule_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ConfigModule = void 0;
const common_1 = require("@nestjs/common");
const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
const dotenv = __importStar(require("dotenv"));
const dotenv_expand_1 = require("dotenv-expand");
const fs = __importStar(require("fs"));
const path_1 = require("path");
const config_host_module_1 = require("./config-host.module");
const config_constants_1 = require("./config.constants");
const config_service_1 = require("./config.service");
const create_config_factory_util_1 = require("./utils/create-config-factory.util");
const get_registration_token_util_1 = require("./utils/get-registration-token.util");
const merge_configs_util_1 = require("./utils/merge-configs.util");
let ConfigModule = ConfigModule_1 = class ConfigModule {
    /**
     * This promise resolves when "dotenv" completes loading environment variables.
     * When "ignoreEnvFile" is set to true, then it will resolve immediately after the
     * "ConfigModule#forRoot" method is called.
     */
    static get envVariablesLoaded() {
        return this._envVariablesLoaded;
    }
    /**
     * Loads process environment variables depending on the "ignoreEnvFile" flag and "envFilePath" value.
     * Also, registers custom configurations globally.
     * @param options
     */
    static forRoot(options = {}) {
        let validatedEnvConfig = undefined;
        let config = options.ignoreEnvFile ? {} : this.loadEnvFile(options);
        if (!options.ignoreEnvVars) {
            config = Object.assign(Object.assign({}, config), process.env);
        }
        if (options.validate) {
            const validatedConfig = options.validate(config);
            validatedEnvConfig = validatedConfig;
            this.assignVariablesToProcess(validatedConfig);
        }
        else if (options.validationSchema) {
            const validationOptions = this.getSchemaValidationOptions(options);
            const { error, value: validatedConfig } = options.validationSchema.validate(config, validationOptions);
            if (error) {
                throw new Error(`Config validation error: ${error.message}`);
            }
            validatedEnvConfig = validatedConfig;
            this.assignVariablesToProcess(validatedConfig);
        }
        else {
            this.assignVariablesToProcess(config);
        }
        const isConfigToLoad = options.load && options.load.length;
        const providers = (options.load || [])
            .map(factory => (0, create_config_factory_util_1.createConfigProvider)(factory))
            .filter(item => item);
        const configProviderTokens = providers.map(item => item.provide);
        const configServiceProvider = {
            provide: config_service_1.ConfigService,
            useFactory: (configService) => {
                if (options.cache) {
                    configService.isCacheEnabled = true;
                }
                return configService;
            },
            inject: [config_constants_1.CONFIGURATION_SERVICE_TOKEN, ...configProviderTokens],
        };
        providers.push(configServiceProvider);
        if (validatedEnvConfig) {
            const validatedEnvConfigLoader = {
                provide: config_constants_1.VALIDATED_ENV_LOADER,
                useFactory: (host) => {
                    host[config_constants_1.VALIDATED_ENV_PROPNAME] = validatedEnvConfig;
                },
                inject: [config_constants_1.CONFIGURATION_TOKEN],
            };
            providers.push(validatedEnvConfigLoader);
        }
        this.environmentVariablesLoadedSignal();
        return {
            module: ConfigModule_1,
            global: options.isGlobal,
            providers: isConfigToLoad
                ? [
                    ...providers,
                    {
                        provide: config_constants_1.CONFIGURATION_LOADER,
                        useFactory: (host, ...configurations) => {
                            configurations.forEach((item, index) => this.mergePartial(host, item, providers[index]));
                        },
                        inject: [config_constants_1.CONFIGURATION_TOKEN, ...configProviderTokens],
                    },
                ]
                : providers,
            exports: [config_service_1.ConfigService, ...configProviderTokens],
        };
    }
    /**
     * Registers configuration object (partial registration).
     * @param config
     */
    static forFeature(config) {
        const configProvider = (0, create_config_factory_util_1.createConfigProvider)(config);
        const serviceProvider = {
            provide: config_service_1.ConfigService,
            useFactory: (configService) => configService,
            inject: [config_constants_1.CONFIGURATION_SERVICE_TOKEN, configProvider.provide],
        };
        return {
            module: ConfigModule_1,
            providers: [
                configProvider,
                serviceProvider,
                {
                    provide: config_constants_1.CONFIGURATION_LOADER,
                    useFactory: (host, partialConfig) => {
                        this.mergePartial(host, partialConfig, configProvider);
                    },
                    inject: [config_constants_1.CONFIGURATION_TOKEN, configProvider.provide],
                },
            ],
            exports: [config_service_1.ConfigService, configProvider.provide],
        };
    }
    static loadEnvFile(options) {
        const envFilePaths = Array.isArray(options.envFilePath)
            ? options.envFilePath
            : [options.envFilePath || (0, path_1.resolve)(process.cwd(), '.env')];
        let config = {};
        for (const envFilePath of envFilePaths) {
            if (fs.existsSync(envFilePath)) {
                config = Object.assign(dotenv.parse(fs.readFileSync(envFilePath)), config);
                if (options.expandVariables) {
                    const expandOptions = typeof options.expandVariables === 'object' ? options.expandVariables : {};
                    config = (0, dotenv_expand_1.expand)(Object.assign(Object.assign({}, expandOptions), { parsed: config })).parsed || config;
                }
            }
        }
        return config;
    }
    static assignVariablesToProcess(config) {
        if (!(0, shared_utils_1.isObject)(config)) {
            return;
        }
        const keys = Object.keys(config).filter(key => !(key in process.env));
        keys.forEach(key => (process.env[key] = config[key]));
    }
    static mergePartial(host, item, provider) {
        const factoryRef = provider.useFactory;
        const token = (0, get_registration_token_util_1.getRegistrationToken)(factoryRef);
        (0, merge_configs_util_1.mergeConfigObject)(host, item, token);
    }
    static getSchemaValidationOptions(options) {
        if (options.validationOptions) {
            if (typeof options.validationOptions.allowUnknown === 'undefined') {
                options.validationOptions.allowUnknown = true;
            }
            return options.validationOptions;
        }
        return {
            abortEarly: false,
            allowUnknown: true,
        };
    }
};
ConfigModule._envVariablesLoaded = new Promise(resolve => (ConfigModule_1.environmentVariablesLoadedSignal = resolve));
ConfigModule = ConfigModule_1 = __decorate([
    (0, common_1.Module)({
        imports: [config_host_module_1.ConfigHostModule],
        providers: [
            {
                provide: config_service_1.ConfigService,
                useExisting: config_constants_1.CONFIGURATION_SERVICE_TOKEN,
            },
        ],
        exports: [config_host_module_1.ConfigHostModule, config_service_1.ConfigService],
    })
], ConfigModule);
exports.ConfigModule = ConfigModule;