Multiple assignees (#3705)

models/migrations/v64.go

@@ -0,0 +1,129 @@
+// Copyright 2018 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/util"
+
+	"github.com/go-xorm/xorm"
+)
+
+func addMultipleAssignees(x *xorm.Engine) error {
+
+	// Redeclare issue struct
+	type Issue struct {
+		ID          int64  `xorm:"pk autoincr"`
+		RepoID      int64  `xorm:"INDEX UNIQUE(repo_index)"`
+		Index       int64  `xorm:"UNIQUE(repo_index)"` // Index in one repository.
+		PosterID    int64  `xorm:"INDEX"`
+		Title       string `xorm:"name"`
+		Content     string `xorm:"TEXT"`
+		MilestoneID int64  `xorm:"INDEX"`
+		Priority    int
+		AssigneeID  int64 `xorm:"INDEX"`
+		IsClosed    bool  `xorm:"INDEX"`
+		IsPull      bool  `xorm:"INDEX"` // Indicates whether is a pull request or not.
+		NumComments int
+		Ref         string
+
+		DeadlineUnix util.TimeStamp `xorm:"INDEX"`
+		CreatedUnix  util.TimeStamp `xorm:"INDEX created"`
+		UpdatedUnix  util.TimeStamp `xorm:"INDEX updated"`
+		ClosedUnix   util.TimeStamp `xorm:"INDEX"`
+	}
+
+	allIssues := []Issue{}
+	err := x.Find(&allIssues)
+	if err != nil {
+		return err
+	}
+
+	// Create the table
+	type IssueAssignees struct {
+		ID         int64 `xorm:"pk autoincr"`
+		AssigneeID int64 `xorm:"INDEX"`
+		IssueID    int64 `xorm:"INDEX"`
+	}
+	err = x.Sync2(IssueAssignees{})
+	if err != nil {
+		return err
+	}
+
+	// Range over all issues and insert a new entry for each issue/assignee
+	sess := x.NewSession()
+	defer sess.Close()
+
+	err = sess.Begin()
+	if err != nil {
+		return err
+	}
+
+	for _, issue := range allIssues {
+		if issue.AssigneeID != 0 {
+			_, err := sess.Insert(IssueAssignees{IssueID: issue.ID, AssigneeID: issue.AssigneeID})
+			if err != nil {
+				sess.Rollback()
+				return err
+			}
+		}
+	}
+
+	// Updated the comment table
+	type Comment struct {
+		ID              int64 `xorm:"pk autoincr"`
+		Type            int
+		PosterID        int64 `xorm:"INDEX"`
+		IssueID         int64 `xorm:"INDEX"`
+		LabelID         int64
+		OldMilestoneID  int64
+		MilestoneID     int64
+		OldAssigneeID   int64
+		AssigneeID      int64
+		RemovedAssignee bool
+		OldTitle        string
+		NewTitle        string
+
+		CommitID        int64
+		Line            int64
+		Content         string `xorm:"TEXT"`
+		RenderedContent string `xorm:"-"`
+
+		CreatedUnix util.TimeStamp `xorm:"INDEX created"`
+		UpdatedUnix util.TimeStamp `xorm:"INDEX updated"`
+
+		// Reference issue in commit message
+		CommitSHA string `xorm:"VARCHAR(40)"`
+	}
+	if err := x.Sync2(Comment{}); err != nil {
+		return err
+	}
+
+	// Migrate comments
+	// First update everything to not have nulls in db
+	if _, err := sess.Where("type = ?", 9).Cols("removed_assignee").Update(Comment{RemovedAssignee: false}); err != nil {
+		return err
+	}
+
+	allAssignementComments := []Comment{}
+	if err := sess.Where("type = ?", 9).Find(&allAssignementComments); err != nil {
+		return err
+	}
+
+	for _, comment := range allAssignementComments {
+		// Everytime where OldAssigneeID is > 0, the assignement was removed.
+		if comment.OldAssigneeID > 0 {
+			_, err = sess.ID(comment.ID).Update(Comment{RemovedAssignee: true})
+		}
+	}
+
+	if err := dropTableColumns(sess, "issue", "assignee_id"); err != nil {
+		return err
+	}
+
+	if err := dropTableColumns(sess, "issue_user", "is_assigned"); err != nil {
+		return err
+	}
+	return sess.Commit()
+}