New structure (#7)

pkg/config/config.go

@@ -0,0 +1,73 @@
+package config
+
+import (
+	"crypto/rand"
+	"fmt"
+	"github.com/spf13/viper"
+	"strings"
+)
+
+// InitConfig initializes the config, sets defaults etc.
+func InitConfig() (err error) {
+
+	// Set defaults
+	// Service config
+	random, err := random(32)
+	if err != nil {
+		return err
+	}
+
+	// Service
+	viper.SetDefault("service.JWTSecret", random)
+	viper.SetDefault("service.interface", ":3456")
+	viper.SetDefault("service.frontendurl", "")
+	// Database
+	viper.SetDefault("database.type", "sqlite")
+	viper.SetDefault("database.host", "localhost")
+	viper.SetDefault("database.user", "vikunja")
+	viper.SetDefault("database.password", "")
+	viper.SetDefault("database.database", "vikunja")
+	viper.SetDefault("database.path", "./vikunja.db")
+	viper.SetDefault("database.showqueries", false)
+	viper.SetDefault("database.openconnections", 100)
+	// Cacher
+	viper.SetDefault("cache.enabled", false)
+	viper.SetDefault("cache.type", "memory")
+	viper.SetDefault("cache.maxelementsize", 1000)
+	viper.SetDefault("cache.redishost", "localhost:6379")
+	viper.SetDefault("cache.redispassword", "")
+	// Mailer
+	viper.SetDefault("mailer.host", "")
+	viper.SetDefault("mailer.port", "587")
+	viper.SetDefault("mailer.user", "user")
+	viper.SetDefault("mailer.password", "")
+	viper.SetDefault("mailer.skiptlsverify", false)
+	viper.SetDefault("mailer.fromemail", "mail@vikunja")
+	viper.SetDefault("mailer.queuelength", 100)
+	viper.SetDefault("mailer.queuetimeout", 30)
+
+	// Init checking for environment variables
+	viper.SetEnvPrefix("vikunja")
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+	viper.AutomaticEnv()
+
+	// Load the config file
+	viper.AddConfigPath(".")
+	viper.SetConfigName("config")
+	err = viper.ReadInConfig()
+	if err != nil {
+		fmt.Println(err)
+		fmt.Println("Using defaults.")
+	}
+
+	return nil
+}
+
+func random(length int) (string, error) {
+	b := make([]byte, length)
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("%X", b), nil
+}