package api

import (
	"errors"
	"fmt"
	"strings"

	log "github.com/go-admin-team/go-admin-core/logger"
	"github.com/go-admin-team/go-admin-core/sdk/config"
)

const minimumProductionJWTSecretLength = 32

func validateRuntimeConfig() {
	err := validateConfigValues(
		config.ApplicationConfig.Mode,
		config.JwtConfig.Secret,
		config.DatabaseConfig.Driver,
		config.DatabaseConfig.Source,
	)
	if err != nil {
		log.Fatal(err)
	}
}

func validateConfigValues(mode, jwtSecret, databaseDriver, databaseSource string) error {
	if !strings.EqualFold(strings.TrimSpace(databaseDriver), "postgres") {
		return errors.New("Sense requires PostgreSQL as its database driver")
	}
	if strings.TrimSpace(databaseSource) == "" {
		return errors.New("Sense database source is required")
	}

	if strings.EqualFold(strings.TrimSpace(mode), "prod") {
		secret := strings.TrimSpace(jwtSecret)
		if len(secret) < minimumProductionJWTSecretLength {
			return fmt.Errorf("Sense production JWT secret must contain at least %d characters", minimumProductionJWTSecretLength)
		}
		if strings.EqualFold(secret, "go-admin") {
			return errors.New("Sense production JWT secret must not use the upstream default")
		}
	}

	return nil
}