Kanban board (#8346)

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: jaqra <48099350+jaqra@users.noreply.github.com>
Co-authored-by: Kerry <flatline-studios@users.noreply.github.com>
Co-authored-by: Jaqra <jaqra@hotmail.com>
Co-authored-by: Kyle Evans <kevans91@users.noreply.github.com>
Co-authored-by: Tsakiridis Ilias <TsakiDev@users.noreply.github.com>
Co-authored-by: Ilias Tsakiridis <ilias.tsakiridis@outlook.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

models/project_issue.go

@@ -0,0 +1,210 @@
+// Copyright 2020 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
+
+import (
+	"fmt"
+
+	"xorm.io/xorm"
+)
+
+// ProjectIssue saves relation from issue to a project
+type ProjectIssue struct {
+	ID        int64 `xorm:"pk autoincr"`
+	IssueID   int64 `xorm:"INDEX"`
+	ProjectID int64 `xorm:"INDEX"`
+
+	// If 0, then it has not been added to a specific board in the project
+	ProjectBoardID int64 `xorm:"INDEX"`
+}
+
+func deleteProjectIssuesByProjectID(e Engine, projectID int64) error {
+	_, err := e.Where("project_id=?", projectID).Delete(&ProjectIssue{})
+	return err
+}
+
+//  ___
+// |_ _|___ ___ _   _  ___
+//  | |/ __/ __| | | |/ _ \
+//  | |\__ \__ \ |_| |  __/
+// |___|___/___/\__,_|\___|
+
+// LoadProject load the project the issue was assigned to
+func (i *Issue) LoadProject() (err error) {
+	return i.loadProject(x)
+}
+
+func (i *Issue) loadProject(e Engine) (err error) {
+	if i.Project == nil {
+		var p Project
+		if _, err = e.Table("project").
+			Join("INNER", "project_issue", "project.id=project_issue.project_id").
+			Where("project_issue.issue_id = ?", i.ID).
+			Get(&p); err != nil {
+			return err
+		}
+		i.Project = &p
+	}
+	return
+}
+
+// ProjectID return project id if issue was assigned to one
+func (i *Issue) ProjectID() int64 {
+	return i.projectID(x)
+}
+
+func (i *Issue) projectID(e Engine) int64 {
+	var ip ProjectIssue
+	has, err := e.Where("issue_id=?", i.ID).Get(&ip)
+	if err != nil || !has {
+		return 0
+	}
+	return ip.ProjectID
+}
+
+// ProjectBoardID return project board id if issue was assigned to one
+func (i *Issue) ProjectBoardID() int64 {
+	return i.projectBoardID(x)
+}
+
+func (i *Issue) projectBoardID(e Engine) int64 {
+	var ip ProjectIssue
+	has, err := e.Where("issue_id=?", i.ID).Get(&ip)
+	if err != nil || !has {
+		return 0
+	}
+	return ip.ProjectBoardID
+}
+
+//  ____            _           _
+// |  _ \ _ __ ___ (_) ___  ___| |_
+// | |_) | '__/ _ \| |/ _ \/ __| __|
+// |  __/| | | (_) | |  __/ (__| |_
+// |_|   |_|  \___// |\___|\___|\__|
+//               |__/
+
+// NumIssues return counter of all issues assigned to a project
+func (p *Project) NumIssues() int {
+	c, err := x.Table("project_issue").
+		Where("project_id=?", p.ID).
+		GroupBy("issue_id").
+		Cols("issue_id").
+		Count()
+	if err != nil {
+		return 0
+	}
+	return int(c)
+}
+
+// NumClosedIssues return counter of closed issues assigned to a project
+func (p *Project) NumClosedIssues() int {
+	c, err := x.Table("project_issue").
+		Join("INNER", "issue", "project_issue.issue_id=issue.id").
+		Where("project_issue.project_id=? AND issue.is_closed=?", p.ID, true).
+		Cols("issue_id").
+		Count()
+	if err != nil {
+		return 0
+	}
+	return int(c)
+}
+
+// NumOpenIssues return counter of open issues assigned to a project
+func (p *Project) NumOpenIssues() int {
+	c, err := x.Table("project_issue").
+		Join("INNER", "issue", "project_issue.issue_id=issue.id").
+		Where("project_issue.project_id=? AND issue.is_closed=?", p.ID, false).Count("issue.id")
+	if err != nil {
+		return 0
+	}
+	return int(c)
+}
+
+// ChangeProjectAssign changes the project associated with an issue
+func ChangeProjectAssign(issue *Issue, doer *User, newProjectID int64) error {
+
+	sess := x.NewSession()
+	defer sess.Close()
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+
+	if err := addUpdateIssueProject(sess, issue, doer, newProjectID); err != nil {
+		return err
+	}
+
+	return sess.Commit()
+}
+
+func addUpdateIssueProject(e *xorm.Session, issue *Issue, doer *User, newProjectID int64) error {
+
+	oldProjectID := issue.projectID(e)
+
+	if _, err := e.Where("project_issue.issue_id=?", issue.ID).Delete(&ProjectIssue{}); err != nil {
+		return err
+	}
+
+	if err := issue.loadRepo(e); err != nil {
+		return err
+	}
+
+	if oldProjectID > 0 || newProjectID > 0 {
+		if _, err := createComment(e, &CreateCommentOptions{
+			Type:         CommentTypeProject,
+			Doer:         doer,
+			Repo:         issue.Repo,
+			Issue:        issue,
+			OldProjectID: oldProjectID,
+			ProjectID:    newProjectID,
+		}); err != nil {
+			return err
+		}
+	}
+
+	_, err := e.Insert(&ProjectIssue{
+		IssueID:   issue.ID,
+		ProjectID: newProjectID,
+	})
+	return err
+}
+
+//  ____            _           _   ____                      _
+// |  _ \ _ __ ___ (_) ___  ___| |_| __ )  ___   __ _ _ __ __| |
+// | |_) | '__/ _ \| |/ _ \/ __| __|  _ \ / _ \ / _` | '__/ _` |
+// |  __/| | | (_) | |  __/ (__| |_| |_) | (_) | (_| | | | (_| |
+// |_|   |_|  \___// |\___|\___|\__|____/ \___/ \__,_|_|  \__,_|
+//               |__/
+
+// MoveIssueAcrossProjectBoards move a card from one board to another
+func MoveIssueAcrossProjectBoards(issue *Issue, board *ProjectBoard) error {
+
+	sess := x.NewSession()
+	defer sess.Close()
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+
+	var pis ProjectIssue
+	has, err := sess.Where("issue_id=?", issue.ID).Get(&pis)
+	if err != nil {
+		return err
+	}
+
+	if !has {
+		return fmt.Errorf("issue has to be added to a project first")
+	}
+
+	pis.ProjectBoardID = board.ID
+	if _, err := sess.ID(pis.ID).Cols("project_board_id").Update(&pis); err != nil {
+		return err
+	}
+
+	return sess.Commit()
+}
+
+func (pb *ProjectBoard) removeIssues(e Engine) error {
+	_, err := e.Exec("UPDATE `project_issue` SET project_board_id = 0 WHERE project_board_id = ? ", pb.ID)
+	return err
+}