package validator

import (
	"fmt"
	"strings"

	"browser.local/platform/domain"
)

const maxLifecycleIdempotencyKeyLength = 160

func ValidateServerLifecycleCreate(create domain.ServerLifecycleCreate) error {
	var violations []string
	violations = appendRequired(violations, "id", create.ID)
	violations = appendRequired(violations, "pluginId", create.PluginID)
	violations = appendRequired(violations, "name", create.Name)
	if create.RunEndpointID != "" {
		violations = appendRequired(violations, "profileKey", create.ProfileKey)
	}
	violations = appendLifecycleIdempotencyViolations(violations, create.IdempotencyKey)
	if err := ValidateServerDeploymentDefinition(create.Deployment); err != nil {
		violations = append(violations, err.Error())
	}
	return finish(violations)
}

func ValidateServerLifecycleCommand(command domain.ServerLifecycleCommand) error {
	var violations []string
	violations = appendRequired(violations, "serverInstanceId", command.ServerInstanceID)
	if command.ExpectedConfigVersion <= 0 {
		violations = append(violations, "expectedConfigVersion must be positive")
	}
	violations = appendLifecycleIdempotencyViolations(violations, command.IdempotencyKey)
	return finish(violations)
}

func ValidateServerLifecycleAction(action domain.ServerLifecycleAction) error {
	switch action {
	case domain.ServerLifecycleActionCreate, domain.ServerLifecycleActionStart, domain.ServerLifecycleActionStop, domain.ServerLifecycleActionStatus:
		return nil
	default:
		return ValidationError{Violations: []string{fmt.Sprintf("action %q is invalid", action)}}
	}
}

func appendLifecycleIdempotencyViolations(violations []string, key string) []string {
	violations = appendRequired(violations, "idempotencyKey", key)
	if len(key) > maxLifecycleIdempotencyKeyLength {
		violations = append(violations, "idempotencyKey is too long")
	}
	if strings.TrimSpace(key) != key {
		violations = append(violations, "idempotencyKey must not have surrounding whitespace")
	}
	return violations
}