package console

import (
	"context"
	"fmt"

	"git.golem15.com/golem15/sm-user-plugin/classes"
	"git.golem15.com/golem15/sm-user-plugin/models"
	"git.golem15.com/golem15/summercms/modules/backpack"
	"git.golem15.com/golem15/summercms/modules/bonfire"
	"gorm.io/gorm"
)

// BackfillHandles fills a unique handle on every user row that still has none.
func BackfillHandles(app *backpack.App) bonfire.Command {
	return bonfire.Command{
		Name:        "user:backfill-handles",
		Description: "Assign unique handles to users that do not have one (D-15)",
		Run: func(ctx context.Context, _ bonfire.Input, out bonfire.Output) error {
			if app == nil {
				return fmt.Errorf("user:backfill-handles: app is nil")
			}
			gdb, ok := app.Lookup[*gorm.DB]()
			if !ok || gdb == nil {
				return fmt.Errorf("user:backfill-handles: database is not configured")
			}
			var users []models.User
			if err := gdb.WithContext(ctx).Where("handle IS NULL OR handle = ''").Find(&users).Error; err != nil {
				return err
			}
			n := 0
			for i := range users {
				if err := classes.AssignHandle(ctx, gdb, &users[i]); err != nil {
					return err
				}
				n++
			}
			out.Success(fmt.Sprintf("Assigned handles to %d user(s)", n))
			return nil
		},
	}
}