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path: root/models/repo_redirect.go
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// Copyright 2017 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package models

import (
	"strings"
)

// RepoRedirect represents that a repo name should be redirected to another
type RepoRedirect struct {
	ID             int64  `xorm:"pk autoincr"`
	OwnerID        int64  `xorm:"UNIQUE(s)"`
	LowerName      string `xorm:"UNIQUE(s) INDEX NOT NULL"`
	RedirectRepoID int64  // repoID to redirect to
}

// LookupRepoRedirect look up if a repository has a redirect name
func LookupRepoRedirect(ownerID int64, repoName string) (int64, error) {
	repoName = strings.ToLower(repoName)
	redirect := &RepoRedirect{OwnerID: ownerID, LowerName: repoName}
	if has, err := x.Get(redirect); err != nil {
		return 0, err
	} else if !has {
		return 0, ErrRepoRedirectNotExist{OwnerID: ownerID, RepoName: repoName}
	}
	return redirect.RedirectRepoID, nil
}

// newRepoRedirect create a new repo redirect
func newRepoRedirect(e Engine, ownerID, repoID int64, oldRepoName, newRepoName string) error {
	oldRepoName = strings.ToLower(oldRepoName)
	newRepoName = strings.ToLower(newRepoName)

	if err := deleteRepoRedirect(e, ownerID, newRepoName); err != nil {
		return err
	}

	if _, err := e.Insert(&RepoRedirect{
		OwnerID:        ownerID,
		LowerName:      oldRepoName,
		RedirectRepoID: repoID,
	}); err != nil {
		return err
	}
	return nil
}

// deleteRepoRedirect delete any redirect from the specified repo name to
// anything else
func deleteRepoRedirect(e Engine, ownerID int64, repoName string) error {
	repoName = strings.ToLower(repoName)
	_, err := e.Delete(&RepoRedirect{OwnerID: ownerID, LowerName: repoName})
	return err
}