/**
 * Copyright (c) 2020 Gitpod GmbH. All rights reserved.
 * Licensed under the GNU Affero General Public License (AGPL).
 * See License-AGPL.txt in the project root for license information.
 */

import { injectable } from "inversify";
import { log } from "@gitpod/gitpod-protocol/lib/util/logging";
import { getEnvVarParsed, getEnvVar } from "@gitpod/gitpod-protocol/lib/env";
import { ConnectionConfig } from "mysql";

@injectable()
export class Config {
    get dbConfig(): DatabaseConfig {
        // defaults to be used only in tests
        const dbSetup = {
            host: process.env.DB_HOST || "localhost",
            port: getEnvVarParsed("DB_PORT", Number.parseInt, "3306"),
            username: process.env.DB_USERNAME || "gitpod",
            password: process.env.DB_PASSWORD || "test",
            database: process.env.DB_NAME || "gitpod",
        };

        log.info(`Using DB: ${dbSetup.host}:${dbSetup.port}/${dbSetup.database}`);

        return dbSetup;
    }

    get mysqlConfig(): ConnectionConfig {
        const dbConfig = this.dbConfig;
        return {
            host: dbConfig.host,
            port: dbConfig.port,
            user: dbConfig.username,
            password: dbConfig.password,
            database: dbConfig.database,
        };
    }

    get dbEncryptionKeys(): string {
        return getEnvVar("DB_ENCRYPTION_KEYS");
    }

    get deletedEntryGCConfig(): DeletedEntryGCConfig {
        const enabled = getEnvVar("DB_DELETED_ENTRIES_GC_ENABLED", "true") === "true";
        const intervalMS = parseInt(getEnvVar("DB_DELETED_ENTRIES_GC_INTERVAL", (10 * 60 * 1000).toString()));
        return { enabled, intervalMS };
    }
}

export interface DatabaseConfig {
    host?: string;
    port?: number;
    database?: string;
    username?: string;
    password?: string;
}

export interface DeletedEntryGCConfig {
    enabled: boolean;
    intervalMS: number;
}