Move create/fork repository from models to modules/repository (#9489)

* Move create/fork repository from models to modules/repository

* fix wrong reference

* fix test

* fix test

* fix lint

* Fix DBContext

* remove duplicated TestMain

* fix lint

* fix conflicts

modules/repository/fork.go

@@ -0,0 +1,87 @@
+// Copyright 2019 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 repository
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/log"
+)
+
+// ForkRepository forks a repository
+func ForkRepository(doer, owner *models.User, oldRepo *models.Repository, name, desc string) (_ *models.Repository, err error) {
+	forkedRepo, err := oldRepo.GetUserFork(owner.ID)
+	if err != nil {
+		return nil, err
+	}
+	if forkedRepo != nil {
+		return nil, models.ErrForkAlreadyExist{
+			Uname:    owner.Name,
+			RepoName: oldRepo.FullName(),
+			ForkName: forkedRepo.FullName(),
+		}
+	}
+
+	repo := &models.Repository{
+		OwnerID:       owner.ID,
+		Owner:         owner,
+		OwnerName:     owner.Name,
+		Name:          name,
+		LowerName:     strings.ToLower(name),
+		Description:   desc,
+		DefaultBranch: oldRepo.DefaultBranch,
+		IsPrivate:     oldRepo.IsPrivate,
+		IsEmpty:       oldRepo.IsEmpty,
+		IsFork:        true,
+		ForkID:        oldRepo.ID,
+	}
+
+	oldRepoPath := oldRepo.RepoPath()
+
+	err = models.WithTx(func(ctx models.DBContext) error {
+		if err = models.CreateRepository(ctx, doer, owner, repo); err != nil {
+			return err
+		}
+
+		if err = models.IncrementRepoForkNum(ctx, oldRepo.ID); err != nil {
+			return err
+		}
+
+		repoPath := models.RepoPath(owner.Name, repo.Name)
+		if stdout, err := git.NewCommand(
+			"clone", "--bare", oldRepoPath, repoPath).
+			SetDescription(fmt.Sprintf("ForkRepository(git clone): %s to %s", oldRepo.FullName(), repo.FullName())).
+			RunInDirTimeout(10*time.Minute, ""); err != nil {
+			log.Error("Fork Repository (git clone) Failed for %v (from %v):\nStdout: %s\nError: %v", repo, oldRepo, stdout, err)
+			return fmt.Errorf("git clone: %v", err)
+		}
+
+		if stdout, err := git.NewCommand("update-server-info").
+			SetDescription(fmt.Sprintf("ForkRepository(git update-server-info): %s", repo.FullName())).
+			RunInDir(repoPath); err != nil {
+			log.Error("Fork Repository (git update-server-info) failed for %v:\nStdout: %s\nError: %v", repo, stdout, err)
+			return fmt.Errorf("git update-server-info: %v", err)
+		}
+
+		if err = models.CreateDelegateHooks(repoPath); err != nil {
+			return fmt.Errorf("createDelegateHooks: %v", err)
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	ctx := models.DefaultDBContext()
+	if err = repo.UpdateSize(ctx); err != nil {
+		log.Error("Failed to update size for repository: %v", err)
+	}
+
+	return repo, models.CopyLFS(ctx, repo, oldRepo)
+}