initial commit

internal/db/config.go

@@ -0,0 +1,55 @@
+package db
+
+import (
+	"git.haelnorr.com/h/golib/env"
+	"github.com/pkg/errors"
+)
+
+type Config struct {
+	User     string // ENV DB_USER: Database user for authentication (required)
+	Password string // ENV DB_PASSWORD: Database password for authentication (required)
+	Host     string // ENV DB_HOST: Database host address (required)
+	Port     uint16 // ENV DB_PORT: Database port (default: 5432)
+	DB       string // ENV DB_NAME: Database name to connect to (required)
+	SSL      string // ENV DB_SSL: SSL mode for connection (default: disable)
+}
+
+func ConfigFromEnv() (any, error) {
+	cfg := &Config{
+		User:     env.String("DB_USER", ""),
+		Password: env.String("DB_PASSWORD", ""),
+		Host:     env.String("DB_HOST", ""),
+		Port:     env.UInt16("DB_PORT", 5432),
+		DB:       env.String("DB_NAME", ""),
+		SSL:      env.String("DB_SSL", "disable"),
+	}
+
+	// Validate SSL mode
+	validSSLModes := map[string]bool{
+		"disable":     true,
+		"require":     true,
+		"verify-ca":   true,
+		"verify-full": true,
+		"allow":       true,
+		"prefer":      true,
+	}
+	if !validSSLModes[cfg.SSL] {
+		return nil, errors.Errorf("Invalid DB_SSL value: %s. Must be one of: disable, allow, prefer, require, verify-ca, verify-full", cfg.SSL)
+	}
+
+	// Check required fields
+	if cfg.User == "" {
+		return nil, errors.New("Envar not set: DB_USER")
+	}
+	if cfg.Password == "" {
+		return nil, errors.New("Envar not set: DB_PASSWORD")
+	}
+	if cfg.Host == "" {
+		return nil, errors.New("Envar not set: DB_HOST")
+	}
+	if cfg.DB == "" {
+		return nil, errors.New("Envar not set: DB_NAME")
+	}
+
+	return cfg, nil
+}