Added Configuration Management

config/config.go

@@ -0,0 +1,56 @@
+package config
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+
+	"gopkg.in/yaml.v3"
+)
+
+type Config struct {
+	Port         string `yaml:"port"`
+	DatabasePath string `yaml:"database_path"`
+}
+
+const configPath = "./appdata/config.yaml"
+
+func CheckIfExists() error {
+	_, err := os.Stat(configPath)
+	if err == nil {
+		return nil
+	}
+
+	if !os.IsNotExist(err) {
+		return err
+	}
+
+	log.Printf("Config file %s doesn't exist, creating...", configPath)
+	err = os.MkdirAll(filepath.Dir(configPath), 0755)
+	if err != nil {
+		return err
+	}
+
+	defaultConfig := Config{
+		Port:         "8080",
+		DatabasePath: "./appdata/database.db",
+	}
+
+	data, err := yaml.Marshal(defaultConfig)
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(configPath, data, 0644)
+}
+func LoadConfig() (Config, error) {
+	var cfg Config
+
+	file, err := os.ReadFile(configPath)
+	if err != nil {
+		return cfg, err
+	}
+
+	err = yaml.Unmarshal(file, &cfg)
+	return cfg, err
+}