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issue_label.go
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issue_label.go
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// Copyright 2016 The Gogs 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"
"html/template"
"strconv"
"strings"
"github.com/go-xorm/xorm"
)
// Label represents a label of repository for issues.
type Label struct {
ID int64 `xorm:"pk autoincr"`
RepoID int64 `xorm:"INDEX"`
Name string
Color string `xorm:"VARCHAR(7)"`
NumIssues int
NumClosedIssues int
NumOpenIssues int `xorm:"-"`
IsChecked bool `xorm:"-"`
}
// CalOpenIssues calculates the open issues of label.
func (m *Label) CalOpenIssues() {
m.NumOpenIssues = m.NumIssues - m.NumClosedIssues
}
// ForegroundColor calculates the text color for labels based
// on their background color.
func (l *Label) ForegroundColor() template.CSS {
if strings.HasPrefix(l.Color, "#") {
if color, err := strconv.ParseUint(l.Color[1:], 16, 64); err == nil {
r := float32(0xFF & (color >> 16))
g := float32(0xFF & (color >> 8))
b := float32(0xFF & color)
luminance := (0.2126*r + 0.7152*g + 0.0722*b) / 255
if luminance < 0.5 {
return template.CSS("#fff")
}
}
}
// default to black
return template.CSS("#000")
}
// NewLabel creates new label of repository.
func NewLabel(l *Label) error {
_, err := x.Insert(l)
return err
}
func getLabelByID(e Engine, id int64) (*Label, error) {
if id <= 0 {
return nil, ErrLabelNotExist{id}
}
l := &Label{ID: id}
has, err := x.Get(l)
if err != nil {
return nil, err
} else if !has {
return nil, ErrLabelNotExist{l.ID}
}
return l, nil
}
// GetLabelByID returns a label by given ID.
func GetLabelByID(id int64) (*Label, error) {
return getLabelByID(x, id)
}
// GetLabelsByRepoID returns all labels that belong to given repository by ID.
func GetLabelsByRepoID(repoID int64) ([]*Label, error) {
labels := make([]*Label, 0, 10)
return labels, x.Where("repo_id=?", repoID).Find(&labels)
}
func getLabelsByIssueID(e Engine, issueID int64) ([]*Label, error) {
issueLabels, err := getIssueLabels(e, issueID)
if err != nil {
return nil, fmt.Errorf("getIssueLabels: %v", err)
}
var label *Label
labels := make([]*Label, 0, len(issueLabels))
for idx := range issueLabels {
label, err = getLabelByID(e, issueLabels[idx].LabelID)
if err != nil && !IsErrLabelNotExist(err) {
return nil, fmt.Errorf("getLabelByID: %v", err)
}
labels = append(labels, label)
}
return labels, nil
}
// GetLabelsByIssueID returns all labels that belong to given issue by ID.
func GetLabelsByIssueID(issueID int64) ([]*Label, error) {
return getLabelsByIssueID(x, issueID)
}
func updateLabel(e Engine, l *Label) error {
_, err := e.Id(l.ID).AllCols().Update(l)
return err
}
// UpdateLabel updates label information.
func UpdateLabel(l *Label) error {
return updateLabel(x, l)
}
// DeleteLabel delete a label of given repository.
func DeleteLabel(repoID, labelID int64) error {
l, err := GetLabelByID(labelID)
if err != nil {
if IsErrLabelNotExist(err) {
return nil
}
return err
}
sess := x.NewSession()
defer sessionRelease(sess)
if err = sess.Begin(); err != nil {
return err
}
if _, err = x.Where("label_id=?", labelID).Delete(new(IssueLabel)); err != nil {
return err
} else if _, err = sess.Delete(l); err != nil {
return err
}
return sess.Commit()
}
// .___ .____ ___. .__
// | | ______ ________ __ ____ | | _____ \_ |__ ____ | |
// | |/ ___// ___/ | \_/ __ \| | \__ \ | __ \_/ __ \| |
// | |\___ \ \___ \| | /\ ___/| |___ / __ \| \_\ \ ___/| |__
// |___/____ >____ >____/ \___ >_______ (____ /___ /\___ >____/
// \/ \/ \/ \/ \/ \/ \/
// IssueLabel represetns an issue-lable relation.
type IssueLabel struct {
ID int64 `xorm:"pk autoincr"`
IssueID int64 `xorm:"UNIQUE(s)"`
LabelID int64 `xorm:"UNIQUE(s)"`
}
func hasIssueLabel(e Engine, issueID, labelID int64) bool {
has, _ := e.Where("issue_id=? AND label_id=?", issueID, labelID).Get(new(IssueLabel))
return has
}
// HasIssueLabel returns true if issue has been labeled.
func HasIssueLabel(issueID, labelID int64) bool {
return hasIssueLabel(x, issueID, labelID)
}
func newIssueLabel(e *xorm.Session, issue *Issue, label *Label) (err error) {
if _, err = e.Insert(&IssueLabel{
IssueID: issue.ID,
LabelID: label.ID,
}); err != nil {
return err
}
label.NumIssues++
if issue.IsClosed {
label.NumClosedIssues++
}
return updateLabel(e, label)
}
// NewIssueLabel creates a new issue-label relation.
func NewIssueLabel(issue *Issue, label *Label) (err error) {
sess := x.NewSession()
defer sessionRelease(sess)
if err = sess.Begin(); err != nil {
return err
}
if err = newIssueLabel(sess, issue, label); err != nil {
return err
}
return sess.Commit()
}
func getIssueLabels(e Engine, issueID int64) ([]*IssueLabel, error) {
issueLabels := make([]*IssueLabel, 0, 10)
return issueLabels, e.Where("issue_id=?", issueID).Asc("label_id").Find(&issueLabels)
}
// GetIssueLabels returns all issue-label relations of given issue by ID.
func GetIssueLabels(issueID int64) ([]*IssueLabel, error) {
return getIssueLabels(x, issueID)
}
func deleteIssueLabel(e *xorm.Session, issue *Issue, label *Label) (err error) {
if _, err = e.Delete(&IssueLabel{
IssueID: issue.ID,
LabelID: label.ID,
}); err != nil {
return err
}
label.NumIssues--
if issue.IsClosed {
label.NumClosedIssues--
}
return updateLabel(e, label)
}
// DeleteIssueLabel deletes issue-label relation.
func DeleteIssueLabel(issue *Issue, label *Label) (err error) {
sess := x.NewSession()
defer sessionRelease(sess)
if err = sess.Begin(); err != nil {
return err
}
if err = deleteIssueLabel(sess, issue, label); err != nil {
return err
}
return sess.Commit()
}