Add option to close issues via commit on a non master branch (#5992)

* fixes #5957

* add tests to make sure config option is respected

* use already defined struct

* - use migration to make the flag repo wide not for the entire gitea instance
Also note that the config value can still be set so as to be able to control the value for new repositories that are to be created

- fix copy/paste error in copyright header year and rearrange import

- use repo config instead of server config value to determine if a commit should close an issue

- update testsuite

* use global config only when creating a new repository

* allow repo admin toggle feature via UI

* fix typo and improve testcase

* fix fixtures

* add DEFAULT prefix to config value

* fix test

15 files changed, 141 insertions, 44 deletions

diff --git a/custom/conf/app.ini.sample b/custom/conf/app.ini.sample
index 5ef4fa05bb..2f4386dc7d 100644
--- a/custom/conf/app.ini.sample
+++ b/custom/conf/app.ini.sample
@@ -36,6 +36,8 @@ DISABLE_HTTP_GIT = false
 ACCESS_CONTROL_ALLOW_ORIGIN = 
 ; Force ssh:// clone url instead of scp-style uri when default SSH port is used
 USE_COMPAT_SSH_URI = false
+; Close issues as long as a commit on any branch marks it as fixed
+DEFAULT_CLOSE_ISSUES_VIA_COMMITS_IN_ANY_BRANCH = false
 
 [repository.editor]
 ; List of file extensions for which lines should be wrapped in the CodeMirror editor
diff --git a/docs/content/doc/advanced/config-cheat-sheet.en-us.md b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
index b01f600b7c..aa3a491d2e 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
@@ -65,6 +65,7 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
 - `ACCESS_CONTROL_ALLOW_ORIGIN`: **\<empty\>**: Value for Access-Control-Allow-Origin header,
    default is not to present. **WARNING**: This maybe harmful to you website if you do not
    give it a right value.
+- `DEFAULT_CLOSE_ISSUES_VIA_COMMITS_IN_ANY_BRANCH`:  **false**: Close an issue if a commit on a non default branch marks it as closed.
 
 ### Repository - Pull Request (`repository.pull-request`)
 - `WORK_IN_PROGRESS_PREFIXES`: **WIP:,\[WIP\]**: List of prefixes used in Pull Request
diff --git a/models/action.go b/models/action.go
index c886408b2f..ca6bfaf666 100644
--- a/models/action.go
+++ b/models/action.go
@@ -539,7 +539,8 @@ func UpdateIssuesCommit(doer *User, repo *Repository, commits []*PushCommit, bra
 		}
 
 		// Change issue status only if the commit has been pushed to the default branch.
-		if repo.DefaultBranch != branchName {
+		// and if the repo is configured to allow only that
+		if repo.DefaultBranch != branchName && !repo.CloseIssuesViaCommitInAnyBranch {
 			continue
 		}
 
diff --git a/models/action_test.go b/models/action_test.go
index 0310b0ad5d..96d6ddb6dd 100644
--- a/models/action_test.go
+++ b/models/action_test.go
@@ -260,6 +260,40 @@ func TestUpdateIssuesCommit(t *testing.T) {
 	CheckConsistencyFor(t, &Action{})
 }
 
+func TestUpdateIssuesCommit_Issue5957(t *testing.T) {
+	assert.NoError(t, PrepareTestDatabase())
+	user := AssertExistsAndLoadBean(t, &User{ID: 2}).(*User)
+
+	// Test that push to a non-default branch closes an issue.
+	pushCommits := []*PushCommit{
+		{
+			Sha1:           "abcdef1",
+			CommitterEmail: "user2@example.com",
+			CommitterName:  "User Two",
+			AuthorEmail:    "user4@example.com",
+			AuthorName:     "User Four",
+			Message:        "close #2",
+		},
+	}
+
+	repo := AssertExistsAndLoadBean(t, &Repository{ID: 2}).(*Repository)
+	commentBean := &Comment{
+		Type:      CommentTypeCommitRef,
+		CommitSHA: "abcdef1",
+		PosterID:  user.ID,
+		IssueID:   7,
+	}
+
+	issueBean := &Issue{RepoID: repo.ID, Index: 2, ID: 7}
+
+	AssertNotExistsBean(t, commentBean)
+	AssertNotExistsBean(t, issueBean, "is_closed=1")
+	assert.NoError(t, UpdateIssuesCommit(user, repo, pushCommits, "non-existing-branch"))
+	AssertExistsAndLoadBean(t, commentBean)
+	AssertExistsAndLoadBean(t, issueBean, "is_closed=1")
+	CheckConsistencyFor(t, &Action{})
+}
+
 func testCorrectRepoAction(t *testing.T, opts CommitRepoActionOptions, actionBean *Action) {
 	AssertNotExistsBean(t, actionBean)
 	assert.NoError(t, CommitRepoAction(opts))
diff --git a/models/fixtures/issue.yml b/models/fixtures/issue.yml
index 4de8c4fa7e..01bd8b86f6 100644
--- a/models/fixtures/issue.yml
+++ b/models/fixtures/issue.yml
@@ -73,3 +73,16 @@
   num_comments: 0
   created_unix: 946684850
   updated_unix: 978307200
+
+-
+  id: 7
+  repo_id: 2
+  index: 2
+  poster_id: 2
+  name: issue7
+  content: content for the seventh issue
+  is_closed: false
+  is_pull: false
+  created_unix: 946684830
+  updated_unix: 978307200
+
diff --git a/models/fixtures/repository.yml b/models/fixtures/repository.yml
index d412e52d8e..f415761650 100644
--- a/models/fixtures/repository.yml
+++ b/models/fixtures/repository.yml
@@ -17,11 +17,12 @@
   lower_name: repo2
   name: repo2
   is_private: true
-  num_issues: 1
+  num_issues: 2
   num_closed_issues: 1
   num_pulls: 0
   num_closed_pulls: 0
   num_stars: 1
+  close_issues_via_commit_in_any_branch: true
 
 -
   id: 3
diff --git a/models/issue_test.go b/models/issue_test.go
index 3bda3304c3..cec7e8b478 100644
--- a/models/issue_test.go
+++ b/models/issue_test.go
@@ -275,7 +275,7 @@ func TestGetUserIssueStats(t *testing.T) {
 				YourRepositoriesCount: 2,
 				AssignCount:           0,
 				CreateCount:           2,
-				OpenCount:             1,
+				OpenCount:             2,
 				ClosedCount:           2,
 			},
 		},
diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index 533ff90738..174e7b5156 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -210,6 +210,8 @@ var migrations = []Migration{
 	NewMigration("add theme to users", addUserDefaultTheme),
 	// v78 -> v79
 	NewMigration("rename repo is_bare to repo is_empty", renameRepoIsBareToIsEmpty),
+	// v79 -> v80
+	NewMigration("add can close issues via commit in any branch", addCanCloseIssuesViaCommitInAnyBranch),
 }
 
 // Migrate database to current version
diff --git a/models/migrations/v79.go b/models/migrations/v79.go
new file mode 100644
index 0000000000..e246393957
--- /dev/null
+++ b/models/migrations/v79.go
@@ -0,0 +1,27 @@
+// 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 migrations
+
+import (
+	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/go-xorm/xorm"
+)
+
+func addCanCloseIssuesViaCommitInAnyBranch(x *xorm.Engine) error {
+
+	type Repository struct {
+		ID                              int64 `xorm:"pk autoincr"`
+		CloseIssuesViaCommitInAnyBranch bool  `xorm:"NOT NULL DEFAULT false"`
+	}
+
+	if err := x.Sync2(new(Repository)); err != nil {
+		return err
+	}
+
+	_, err := x.Exec("UPDATE repository SET close_issues_via_commit_in_any_branch = ?",
+		setting.Repository.DefaultCloseIssuesViaCommitsInAnyBranch)
+	return err
+}
diff --git a/models/repo.go b/models/repo.go
index c0e69b0e38..848a76fe88 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -197,13 +197,14 @@ type Repository struct {
 	ExternalMetas map[string]string `xorm:"-"`
 	Units         []*RepoUnit       `xorm:"-"`
 
-	IsFork        bool               `xorm:"INDEX NOT NULL DEFAULT false"`
-	ForkID        int64              `xorm:"INDEX"`
-	BaseRepo      *Repository        `xorm:"-"`
-	Size          int64              `xorm:"NOT NULL DEFAULT 0"`
-	IndexerStatus *RepoIndexerStatus `xorm:"-"`
-	IsFsckEnabled bool               `xorm:"NOT NULL DEFAULT true"`
-	Topics        []string           `xorm:"TEXT JSON"`
+	IsFork                          bool               `xorm:"INDEX NOT NULL DEFAULT false"`
+	ForkID                          int64              `xorm:"INDEX"`
+	BaseRepo                        *Repository        `xorm:"-"`
+	Size                            int64              `xorm:"NOT NULL DEFAULT 0"`
+	IndexerStatus                   *RepoIndexerStatus `xorm:"-"`
+	IsFsckEnabled                   bool               `xorm:"NOT NULL DEFAULT true"`
+	CloseIssuesViaCommitInAnyBranch bool               `xorm:"NOT NULL DEFAULT false"`
+	Topics                          []string           `xorm:"TEXT JSON"`
 
 	CreatedUnix util.TimeStamp `xorm:"INDEX created"`
 	UpdatedUnix util.TimeStamp `xorm:"INDEX updated"`
@@ -1373,13 +1374,14 @@ func CreateRepository(doer, u *User, opts CreateRepoOptions) (_ *Repository, err
 	}
 
 	repo := &Repository{
-		OwnerID:       u.ID,
-		Owner:         u,
-		Name:          opts.Name,
-		LowerName:     strings.ToLower(opts.Name),
-		Description:   opts.Description,
-		IsPrivate:     opts.IsPrivate,
-		IsFsckEnabled: !opts.IsMirror,
+		OwnerID:                         u.ID,
+		Owner:                           u,
+		Name:                            opts.Name,
+		LowerName:                       strings.ToLower(opts.Name),
+		Description:                     opts.Description,
+		IsPrivate:                       opts.IsPrivate,
+		IsFsckEnabled:                   !opts.IsMirror,
+		CloseIssuesViaCommitInAnyBranch: setting.Repository.DefaultCloseIssuesViaCommitsInAnyBranch,
 	}
 
 	sess := x.NewSession()
diff --git a/modules/auth/repo_form.go b/modules/auth/repo_form.go
index 58be0ec3ae..1a67f2b884 100644
--- a/modules/auth/repo_form.go
+++ b/modules/auth/repo_form.go
@@ -14,7 +14,7 @@ import (
 
 	"github.com/Unknwon/com"
 	"github.com/go-macaron/binding"
-	"gopkg.in/macaron.v1"
+	macaron "gopkg.in/macaron.v1"
 )
 
 // _______________________________________    _________.______________________ _______________.___.
@@ -120,7 +120,8 @@ type RepoSettingForm struct {
 	IsArchived                       bool
 
 	// Admin settings
-	EnableHealthCheck bool
+	EnableHealthCheck                     bool
+	EnableCloseIssuesViaCommitInAnyBranch bool
 }
 
 // Validate validates the fields
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index 0e3dc46882..d3b45ec29d 100644
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -190,16 +190,17 @@ var (
 
 	// Repository settings
 	Repository = struct {
-		AnsiCharset              string
-		ForcePrivate             bool
-		DefaultPrivate           string
-		MaxCreationLimit         int
-		MirrorQueueLength        int
-		PullRequestQueueLength   int
-		PreferredLicenses        []string
-		DisableHTTPGit           bool
-		AccessControlAllowOrigin string
-		UseCompatSSHURI          bool
+		AnsiCharset                             string
+		ForcePrivate                            bool
+		DefaultPrivate                          string
+		MaxCreationLimit                        int
+		MirrorQueueLength                       int
+		PullRequestQueueLength                  int
+		PreferredLicenses                       []string
+		DisableHTTPGit                          bool
+		AccessControlAllowOrigin                string
+		UseCompatSSHURI                         bool
+		DefaultCloseIssuesViaCommitsInAnyBranch bool
 
 		// Repository editor settings
 		Editor struct {
@@ -227,16 +228,17 @@ var (
 			WorkInProgressPrefixes []string
 		} `ini:"repository.pull-request"`
 	}{
-		AnsiCharset:              "",
-		ForcePrivate:             false,
-		DefaultPrivate:           RepoCreatingLastUserVisibility,
-		MaxCreationLimit:         -1,
-		MirrorQueueLength:        1000,
-		PullRequestQueueLength:   1000,
-		PreferredLicenses:        []string{"Apache License 2.0,MIT License"},
-		DisableHTTPGit:           false,
-		AccessControlAllowOrigin: "",
-		UseCompatSSHURI:          false,
+		AnsiCharset:                             "",
+		ForcePrivate:                            false,
+		DefaultPrivate:                          RepoCreatingLastUserVisibility,
+		MaxCreationLimit:                        -1,
+		MirrorQueueLength:                       1000,
+		PullRequestQueueLength:                  1000,
+		PreferredLicenses:                       []string{"Apache License 2.0,MIT License"},
+		DisableHTTPGit:                          false,
+		AccessControlAllowOrigin:                "",
+		UseCompatSSHURI:                         false,
+		DefaultCloseIssuesViaCommitsInAnyBranch: false,
 
 		// Repository editor settings
 		Editor: struct {
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index 5001247e6c..e0d5b64cfa 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -1035,6 +1035,7 @@ settings.pulls.allow_rebase_merge_commit = Enable Rebasing with explicit merge c
 settings.pulls.allow_squash_commits = Enable Squashing to Merge Commits
 settings.admin_settings = Administrator Settings
 settings.admin_enable_health_check = Enable Repository Health Checks (git fsck)
+settings.admin_enable_close_issues_via_commit_in_any_branch = Close an issue via a commit made in a non default branch
 settings.danger_zone = Danger Zone
 settings.new_owner_has_same_repo = The new owner already has a repository with same name. Please choose another name.
 settings.convert = Convert to Regular Repository
diff --git a/routers/repo/setting.go b/routers/repo/setting.go
index 4fb74f6cfa..5b5eaeb288 100644
--- a/routers/repo/setting.go
+++ b/routers/repo/setting.go
@@ -250,13 +250,19 @@ func SettingsPost(ctx *context.Context, form auth.RepoSettingForm) {
 
 		if repo.IsFsckEnabled != form.EnableHealthCheck {
 			repo.IsFsckEnabled = form.EnableHealthCheck
-			if err := models.UpdateRepository(repo, false); err != nil {
-				ctx.ServerError("UpdateRepository", err)
-				return
-			}
-			log.Trace("Repository admin settings updated: %s/%s", ctx.Repo.Owner.Name, repo.Name)
 		}
 
+		if repo.CloseIssuesViaCommitInAnyBranch != form.EnableCloseIssuesViaCommitInAnyBranch {
+			repo.CloseIssuesViaCommitInAnyBranch = form.EnableCloseIssuesViaCommitInAnyBranch
+		}
+
+		if err := models.UpdateRepository(repo, false); err != nil {
+			ctx.ServerError("UpdateRepository", err)
+			return
+		}
+
+		log.Trace("Repository admin settings updated: %s/%s", ctx.Repo.Owner.Name, repo.Name)
+
 		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
 		ctx.Redirect(ctx.Repo.RepoLink + "/settings")
 
diff --git a/templates/repo/settings/options.tmpl b/templates/repo/settings/options.tmpl
index e5a3ce0752..432f20e74f 100644
--- a/templates/repo/settings/options.tmpl
+++ b/templates/repo/settings/options.tmpl
@@ -263,6 +263,10 @@
 						<label>{{.i18n.Tr "repo.settings.admin_enable_health_check"}}</label>
 					</div>
 				</div>
+				<div class="ui checkbox">
+					<input name="enable_close_issues_via_commit_in_any_branch" type="checkbox" {{ if .Repository.CloseIssuesViaCommitInAnyBranch }}checked{{end}}>
+					<label>{{.i18n.Tr "repo.settings.admin_enable_close_issues_via_commit_in_any_branch"}}</label>
+				</div>
 
 				<div class="ui divider"></div>
 				<div class="field">