Implement "conversation lock" for issue comments (#5073)

5 files changed, 79 insertions, 0 deletions

diff --git a/models/issue.go b/models/issue.go
index 1421b28da2..8ce8658fee 100644
--- a/models/issue.go
+++ b/models/issue.go
@@ -57,6 +57,10 @@ type Issue struct {
 	Reactions        ReactionList  `xorm:"-"`
 	TotalTrackedTime int64         `xorm:"-"`
 	Assignees        []*User       `xorm:"-"`
+
+	// IsLocked limits commenting abilities to users on an issue
+	// with write access
+	IsLocked bool `xorm:"NOT NULL DEFAULT false"`
 }
 
 var (
diff --git a/models/issue_comment.go b/models/issue_comment.go
index 05756c6cf2..1b02918cb7 100644
--- a/models/issue_comment.go
+++ b/models/issue_comment.go
@@ -80,6 +80,10 @@ const (
 	CommentTypeCode
 	// Reviews a pull request by giving general feedback
 	CommentTypeReview
+	// Lock an issue, giving only collaborators access
+	CommentTypeLock
+	// Unlocks a previously locked issue
+	CommentTypeUnlock
 )
 
 // CommentTag defines comment tag type
diff --git a/models/issue_lock.go b/models/issue_lock.go
new file mode 100644
index 0000000000..5a2d996b64
--- /dev/null
+++ b/models/issue_lock.go
@@ -0,0 +1,51 @@
+// 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 models
+
+// IssueLockOptions defines options for locking and/or unlocking an issue/PR
+type IssueLockOptions struct {
+	Doer   *User
+	Issue  *Issue
+	Reason string
+}
+
+// LockIssue locks an issue. This would limit commenting abilities to
+// users with write access to the repo
+func LockIssue(opts *IssueLockOptions) error {
+	return updateIssueLock(opts, true)
+}
+
+// UnlockIssue unlocks a previously locked issue.
+func UnlockIssue(opts *IssueLockOptions) error {
+	return updateIssueLock(opts, false)
+}
+
+func updateIssueLock(opts *IssueLockOptions, lock bool) error {
+	if opts.Issue.IsLocked == lock {
+		return nil
+	}
+
+	opts.Issue.IsLocked = lock
+
+	var commentType CommentType
+	if opts.Issue.IsLocked {
+		commentType = CommentTypeLock
+	} else {
+		commentType = CommentTypeUnlock
+	}
+
+	if err := UpdateIssueCols(opts.Issue, "is_locked"); err != nil {
+		return err
+	}
+
+	_, err := CreateComment(&CreateCommentOptions{
+		Doer:    opts.Doer,
+		Issue:   opts.Issue,
+		Repo:    opts.Issue.Repo,
+		Type:    commentType,
+		Content: opts.Reason,
+	})
+	return err
+}
diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index d6e7f31e46..652abd122a 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -213,6 +213,8 @@ var migrations = []Migration{
 	NewMigration("rename repo is_bare to repo is_empty", renameRepoIsBareToIsEmpty),
 	// v79 -> v80
 	NewMigration("add can close issues via commit in any branch", addCanCloseIssuesViaCommitInAnyBranch),
+	// v80 -> v81
+	NewMigration("add is locked to issues", addIsLockedToIssues),
 }
 
 // Migrate database to current version
diff --git a/models/migrations/v80.go b/models/migrations/v80.go
new file mode 100644
index 0000000000..8cd2ac80a8
--- /dev/null
+++ b/models/migrations/v80.go
@@ -0,0 +1,18 @@
+// 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 "github.com/go-xorm/xorm"
+
+func addIsLockedToIssues(x *xorm.Engine) error {
+	// Issue see models/issue.go
+	type Issue struct {
+		ID       int64 `xorm:"pk autoincr"`
+		IsLocked bool  `xorm:"NOT NULL DEFAULT false"`
+	}
+
+	return x.Sync2(new(Issue))
+
+}