package forms

import (
	"os"
	"time"

	"github.com/pocketbase/pocketbase/core"
	"github.com/pocketbase/pocketbase/models"
)

// SettingsUpsert defines app settings upsert form.
type SettingsUpsert struct {
	*core.Settings

	app core.App
}

// NewSettingsUpsert creates new settings upsert form from the provided app.
func NewSettingsUpsert(app core.App) *SettingsUpsert {
	form := &SettingsUpsert{app: app}

	// load the application settings into the form
	form.Settings, _ = app.Settings().Clone()

	return form
}

// Validate makes the form validatable by implementing [validation.Validatable] interface.
func (form *SettingsUpsert) Validate() error {
	return form.Settings.Validate()
}

// Submit validates the form and upserts the loaded settings.
//
// On success the app settings will be refreshed with the form ones.
//
// You can optionally provide a list of InterceptorFunc to further
// modify the form behavior before persisting it.
func (form *SettingsUpsert) Submit(interceptors ...InterceptorFunc) error {
	if err := form.Validate(); err != nil {
		return err
	}

	encryptionKey := os.Getenv(form.app.EncryptionEnv())

	return runInterceptors(func() error {
		saveErr := form.app.Dao().SaveParam(
			models.ParamAppSettings,
			form.Settings,
			encryptionKey,
		)
		if saveErr != nil {
			return saveErr
		}

		// explicitly trigger old logs deletion
		form.app.LogsDao().DeleteOldRequests(
			time.Now().AddDate(0, 0, -1*form.Settings.Logs.MaxDays),
		)

		// merge the application settings with the form ones
		return form.app.Settings().Merge(form.Settings)
	}, interceptors...)
}