fix(kanban): create missing kanban buckets (#1601)

Co-authored-by: edel <edel.altares@pm.me>
Reviewed-on: vikunja/api#1601
Co-authored-by: kolaente <k@knt.li>
Co-committed-by: kolaente <k@knt.li>

pkg/migration/20230824132533.go

@@ -0,0 +1,106 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-present Vikunja and contributors. All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public Licensee as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public Licensee for more details.
+//
+// You should have received a copy of the GNU Affero General Public Licensee
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package migration
+
+import (
+	"time"
+
+	"src.techknowlogick.com/xormigrate"
+	"xorm.io/xorm"
+)
+
+type buckets20230824132533 struct {
+	ID           int64     `xorm:"int(11) autoincr not null unique pk" json:"id" param:"bucket"`
+	Title        string    `xorm:"text not null" valid:"required" minLength:"1" json:"title"`
+	ProjectID    int64     `xorm:"int(11) not null" json:"project_id" param:"project"`
+	IsDoneBucket bool      `xorm:"BOOL" json:"is_done_bucket"`
+	Position     float64   `xorm:"double null" json:"position"`
+	Created      time.Time `xorm:"created not null" json:"created"`
+	Updated      time.Time `xorm:"updated not null" json:"updated"`
+	CreatedByID  int64     `xorm:"int(11) not null" json:"-"`
+}
+
+func (buckets20230824132533) TableName() string {
+	return "buckets"
+}
+
+type project20230824132533 struct {
+	ID      int64 `xorm:"int(11) autoincr not null unique pk" json:"id" param:"project"`
+	OwnerID int64 `xorm:"int(11) INDEX not null" json:"-"`
+}
+
+func (project *project20230824132533) TableName() string {
+	return "projects"
+}
+
+type task20230824132533 struct {
+	ID        int64     `xorm:"int(11) autoincr not null unique pk" json:"id" param:"projecttask"`
+	ProjectID int64     `xorm:"int(11) INDEX not null" json:"project_id" param:"project"`
+	Updated   time.Time `xorm:"updated not null" json:"updated"`
+	BucketID  int64     `xorm:"int(11) null" json:"bucket_id"`
+}
+
+func (task *task20230824132533) TableName() string {
+	return "tasks"
+}
+
+func init() {
+	migrations = append(migrations, &xormigrate.Migration{
+		ID:          "20230824132533",
+		Description: "",
+		Migrate: func(tx *xorm.Engine) (err error) {
+			projects := []*project20230824132533{}
+			err = tx.
+				Join("LEFT", "buckets", "buckets.project_id = projects.id").
+				Where("buckets.id is null").
+				Find(&projects)
+			if err != nil {
+				return
+			}
+
+			// This map contains all buckets with their project ids as key
+			buckets := make(map[int64]*buckets20230824132533, len(projects))
+			for _, project := range projects {
+
+				buckets[project.ID] = &buckets20230824132533{
+					ProjectID:   project.ID,
+					Title:       "Backlog",
+					CreatedByID: project.OwnerID,
+				}
+
+				_, err = tx.Insert(buckets[project.ID])
+				if err != nil {
+					return
+				}
+
+				// We can put all tasks from that project in the new bucket because we know
+				// it is the only bucket in the project
+				_, err = tx.Where("project_id = ?", project.ID).
+					Cols("bucket_id").
+					Update(&task20230824132533{BucketID: buckets[project.ID].ID})
+				if err != nil {
+					return
+				}
+			}
+
+			return
+		},
+		Rollback: func(tx *xorm.Engine) error {
+			return nil
+		},
+	})
+}