Add separate production, testserver, and demo deployments

cmd/api/config.go

@@ -10,6 +10,8 @@ import (
 	"gardomatic.kleiax.de/internal/api"
 	"gardomatic.kleiax.de/internal/mailer"
 	"gardomatic.kleiax.de/internal/platform/environment"
+	"gardomatic.kleiax.de/internal/platform/validate"
+	"gardomatic.kleiax.de/internal/storage"
 )
 
 func configFromEnvironment() (api.Config, error) {
@@ -55,6 +57,9 @@ func configFromEnvironment() (api.Config, error) {
 		Port:       integer("GARDOMATIC_API_PORT", 4000),
 		Env:        environment.String("GARDOMATIC_ENV", "development"),
 		WebBaseURL: environment.String("GARDOMATIC_WEB_BASE_URL", "http://localhost:4040"),
+		DemoAccountEmail: strings.ToLower(strings.TrimSpace(
+			environment.String("GARDOMATIC_DEMO_ACCOUNT_EMAIL", ""),
+		)),
 		DB: api.DatabaseConfig{
 			Dsn: required("GARDOMATIC_DB_DSN"), MaxOpenConns: integer("GARDOMATIC_DB_MAX_OPEN_CONNS", 25),
 			MaxIdleConns: integer("GARDOMATIC_DB_MAX_IDLE_CONNS", 25), MaxIdleTime: duration("GARDOMATIC_DB_MAX_IDLE_TIME", 15*time.Minute),
@@ -92,6 +97,12 @@ func configFromEnvironment() (api.Config, error) {
 	if cfg.Env == "production" && !cfg.Session.CookieSecure {
 		errs = append(errs, errors.New("GARDOMATIC_COOKIE_SECURE must be true in production"))
 	}
+	if cfg.DemoAccountEmail != "" {
+		v := validate.New()
+		if storage.ValidateEmail(v, cfg.DemoAccountEmail); !v.Valid() {
+			errs = append(errs, errors.New("GARDOMATIC_DEMO_ACCOUNT_EMAIL must be a valid email address"))
+		}
+	}
 	if _, err := mailer.New(cfg.Mail); err != nil {
 		errs = append(errs, fmt.Errorf("mail configuration: %w", err))
 	}