93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
package config
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import (
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"log"
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"reflect"
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"fmt"
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"github.com/spf13/viper"
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)
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type Config struct {
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Hostname string `mapstructure:"HOSTNAME"`
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Port string `mapstructure:"PORT"`
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DatabaseUrl string `mapstructure:"DATABASE_URL"`
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RedisUrl string `mapstructure:"REDIS_URL"`
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MinioUrl string `mapstructure:"MINIO_URL"`
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JwtAlgorithm string `mapstructure:"JWT_ALGORITHM"`
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JwtSecret string `mapstructure:"JWT_SECRET"`
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JwtIssuer string `mapstructure:"JWT_ISSUER"`
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JwtAudience string `mapstructure:"JWT_AUDIENCE"`
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JwtExpAccess string `mapstructure:"JWT_EXP_ACCESS"`
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JwtExpRefresh string `mapstructure:"JWT_EXP_REFRESH"`
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Environment string `mapstructure:"ENVIRONMENT"`
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}
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var config *Config
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// TODO: migrate logging to Zap
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func LoadConfig() error {
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// Load .env file
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if err := viper.ReadInConfig(); err != nil {
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log.Printf("Error reading config file, proceeding with environment variables. %s", err)
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}
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// Set default parameters
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viper.SetDefault("HOSTNAME", "localhost")
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viper.SetDefault("PORT", "8080")
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viper.SetDefault("DATABASE_URL", "mydb")
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viper.SetDefault("REDIS_URL", "myredis")
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viper.SetDefault("MINIO_URL", "myminio")
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viper.SetDefault("JWT_ALGORITHM", "HS256")
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viper.SetDefault("JWT_SECRET", "default_jwt_secret_please_change") // TODO: remove and randomly generate
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viper.SetDefault("JWT_EXP_ACCESS", "5m")
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viper.SetDefault("JWT_EXP_REFRESH", "1w")
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viper.SetDefault("JWT_AUDIENCE", "easywish")
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viper.SetDefault("JWT_ISSUER", "easywish")
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viper.SetDefault("ENVIRONMENT", "production")
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// Set the file name and type for Viper
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viper.SetConfigName(".env") // name of config file (without extension)
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viper.SetConfigType("env") // REQUIRED if the config file does not have the extension
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viper.AddConfigPath(".") // optionally look for config in the working directory
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// Unmarshal the configuration into the Config struct
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if err := viper.Unmarshal(&config); err != nil {
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log.Fatalf("Unable to decode into struct, %v", err)
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}
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// Perform validation
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if err := validateConfig(); err != nil {
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return err
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}
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return nil
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}
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func validateConfig() error {
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v := reflect.ValueOf(*config)
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t := v.Type()
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for i := range v.NumField() {
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field := v.Field(i)
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fieldType := t.Field(i)
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// Check if the field is a string and is empty
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if field.Kind() == reflect.String && field.String() == "" {
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return fmt.Errorf("Missing required configuration: %s", fieldType.Name)
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}
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}
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return nil
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}
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func GetConfig() *Config {
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return config
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}
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