namespace SharpAbp.Infrastructure.Api.Configuration
{
    public static class ConfigurationHelper
    {
        public static string GetString(string key, string defaultValue = null)
        {
            var envValue = Environment.GetEnvironmentVariable(key);
            if (!string.IsNullOrEmpty(envValue))
            {
                return envValue;
            }
            return defaultValue;
        }

        public static int GetInt(string key, int defaultValue = 0)
        {
            var envValue = Environment.GetEnvironmentVariable(key);
            if (int.TryParse(envValue, out var result))
            {
                return result;
            }
            return defaultValue;
        }

        public static bool GetBool(string key, bool defaultValue = false)
        {
            var envValue = Environment.GetEnvironmentVariable(key);
            if (bool.TryParse(envValue, out var result))
            {
                return result;
            }
            return defaultValue;
        }

        public static string GetConnectionString(string type)
        {
            return type.ToLower() switch
            {
                "mongodb" => GetMongoDBConnectionString(),
                "redis" => GetRedisConnectionString(),
                "rabbitmq" => GetRabbitMQConnectionString(),
                "mysql" => GetMySQLConnectionString(),
                _ => throw new ArgumentException($"Unknown connection type: {type}")
            };
        }

        private static string GetMongoDBConnectionString()
        {
            var host = GetString("MONGODB_HOST", "localhost");
            var port = GetString("MONGODB_PORT", "27017");
            var user = GetString("MONGODB_USER", "");
            var password = GetString("MONGODB_PASSWORD", "");
            var database = GetString("MONGODB_DATABASE", "data_0524");

            if (!string.IsNullOrEmpty(user) && !string.IsNullOrEmpty(password))
            {
                return $"mongodb://{user}:{password}@{host}:{port}/{database}";
            }
            return $"mongodb://{host}:{port}/{database}";
        }

        private static string GetRedisConnectionString()
        {
            var host = GetString("REDIS_HOST", "localhost");
            var port = GetString("REDIS_PORT", "6379");
            var password = GetString("REDIS_PASSWORD", "");
            var database = GetString("REDIS_DB", "0");

            var connectionString = $"{host}:{port}";
            if (!string.IsNullOrEmpty(password))
            {
                connectionString += $",password={password}";
            }
            connectionString += $",defaultDatabase={database}";

            return connectionString;
        }

        private static string GetRabbitMQConnectionString()
        {
            var host = GetString("RABBITMQ_HOST", "localhost");
            var port = GetString("RABBITMQ_PORT", "5672");
            var user = GetString("RABBITMQ_USER", "guest");
            var password = GetString("RABBITMQ_PASSWORD", "guest");

            return $"amqp://{user}:{password}@{host}:{port}";
        }

        private static string GetMySQLConnectionString()
        {
            var host = GetString("MYSQL_HOST", "localhost");
            var port = GetString("MYSQL_PORT", "3306");
            var user = GetString("MYSQL_USER", "root");
            var password = GetString("MYSQL_PASSWORD", "");
            var database = GetString("MYSQL_DATABASE", "data_0524");

            return $"Server={host};Port={port};Database={database};User={user};Password={password};";
        }
    }
}