init

config/config.go

@@ -0,0 +1,52 @@
+package config
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/spf13/viper"
+)
+
+// Config represents the application configuration
+type Config struct {
+	Server struct {
+		Port                int `mapstructure:"port"`
+		ReadTimeoutSeconds  int `mapstructure:"read_timeout_seconds"`
+		WriteTimeoutSeconds int `mapstructure:"write_timeout_seconds"`
+		IdleTimeoutSeconds  int `mapstructure:"idle_timeout_seconds"`
+	} `mapstructure:"server"`
+
+	LogLevel string `mapstructure:"log_level"`
+
+	Google struct {
+		ProjectID       string `mapstructure:"project_id"`
+		Location        string `mapstructure:"location"`
+		Dataset         string `mapstructure:"dataset"`
+		DicomStore      string `mapstructure:"dicom_store"`
+		CredentialsPath string `mapstructure:"credentials_path"`
+	} `mapstructure:"google"`
+
+	AllowedOrigins []string `mapstructure:"allowed_origins"`
+}
+
+// Load reads configuration from file and environment variables
+func Load() (*Config, error) {
+	viper.SetConfigName("config")
+	viper.SetConfigType("yaml")
+	viper.AddConfigPath("./config")
+	viper.AddConfigPath(".")
+
+	viper.AutomaticEnv()
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+
+	if err := viper.ReadInConfig(); err != nil {
+		return nil, fmt.Errorf("failed to read config file: %w", err)
+	}
+
+	var cfg Config
+	if err := viper.Unmarshal(&cfg); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal config: %w", err)
+	}
+
+	return &cfg, nil
+}