// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package issues

import (
	"context"

	"code.gitea.io/gitea/models/db"
)

// RecalculateIssueIndexForRepo create issue_index for repo if not exist and
// update it based on highest index of existing issues assigned to a repo
func RecalculateIssueIndexForRepo(ctx context.Context, repoID int64) error {
	ctx, committer, err := db.TxContext(ctx)
	if err != nil {
		return err
	}
	defer committer.Close()

	var maxIndex int64
	if _, err = db.GetEngine(ctx).Select(" MAX(`index`)").Table("issue").Where("repo_id=?", repoID).Get(&maxIndex); err != nil {
		return err
	}

	if err = db.SyncMaxResourceIndex(ctx, "issue_index", repoID, maxIndex); err != nil {
		return err
	}

	return committer.Commit()
}