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			348 lines
		
	
	
		
			8.5 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			348 lines
		
	
	
		
			8.5 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2016 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package models
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import (
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	"fmt"
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	"html/template"
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	"regexp"
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	"strconv"
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	"strings"
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	"github.com/go-xorm/xorm"
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	api "code.gitea.io/sdk/gitea"
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)
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var labelColorPattern = regexp.MustCompile("#([a-fA-F0-9]{6})")
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// GetLabelTemplateFile loads the label template file by given name,
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// then parses and returns a list of name-color pairs.
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func GetLabelTemplateFile(name string) ([][2]string, error) {
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	data, err := getRepoInitFile("label", name)
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	if err != nil {
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		return nil, fmt.Errorf("getRepoInitFile: %v", err)
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	}
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	lines := strings.Split(string(data), "\n")
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	list := make([][2]string, 0, len(lines))
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	for i := 0; i < len(lines); i++ {
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		line := strings.TrimSpace(lines[i])
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		if len(line) == 0 {
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			continue
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		}
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		fields := strings.SplitN(line, " ", 2)
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		if len(fields) != 2 {
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			return nil, fmt.Errorf("line is malformed: %s", line)
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		}
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		if !labelColorPattern.MatchString(fields[0]) {
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			return nil, fmt.Errorf("bad HTML color code in line: %s", line)
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		}
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		fields[1] = strings.TrimSpace(fields[1])
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		list = append(list, [2]string{fields[1], fields[0]})
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	}
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	return list, nil
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}
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// Label represents a label of repository for issues.
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type Label struct {
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	ID              int64 `xorm:"pk autoincr"`
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	RepoID          int64 `xorm:"INDEX"`
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	Name            string
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	Color           string `xorm:"VARCHAR(7)"`
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	NumIssues       int
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	NumClosedIssues int
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	NumOpenIssues   int  `xorm:"-"`
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	IsChecked       bool `xorm:"-"`
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}
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// APIFormat converts a Label to the api.Label format
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func (label *Label) APIFormat() *api.Label {
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	return &api.Label{
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		ID:    label.ID,
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		Name:  label.Name,
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		Color: label.Color,
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	}
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}
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// CalOpenIssues calculates the open issues of label.
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func (label *Label) CalOpenIssues() {
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	label.NumOpenIssues = label.NumIssues - label.NumClosedIssues
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}
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// ForegroundColor calculates the text color for labels based
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// on their background color.
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func (label *Label) ForegroundColor() template.CSS {
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	if strings.HasPrefix(label.Color, "#") {
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		if color, err := strconv.ParseUint(label.Color[1:], 16, 64); err == nil {
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			r := float32(0xFF & (color >> 16))
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			g := float32(0xFF & (color >> 8))
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			b := float32(0xFF & color)
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			luminance := (0.2126*r + 0.7152*g + 0.0722*b) / 255
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			if luminance < 0.66 {
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				return template.CSS("#fff")
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			}
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		}
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	}
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	// default to black
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	return template.CSS("#000")
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}
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// NewLabels creates new label(s) for a repository.
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func NewLabels(labels ...*Label) error {
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	_, err := x.Insert(labels)
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	return err
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}
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// getLabelInRepoByID returns a label by ID in given repository.
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// If pass repoID as 0, then ORM will ignore limitation of repository
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// and can return arbitrary label with any valid ID.
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func getLabelInRepoByID(e Engine, repoID, labelID int64) (*Label, error) {
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	if labelID <= 0 {
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		return nil, ErrLabelNotExist{labelID, repoID}
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	}
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	l := &Label{
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		ID:     labelID,
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		RepoID: repoID,
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	}
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	has, err := x.Get(l)
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	if err != nil {
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		return nil, err
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	} else if !has {
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		return nil, ErrLabelNotExist{l.ID, l.RepoID}
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	}
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	return l, nil
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}
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// GetLabelByID returns a label by given ID.
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func GetLabelByID(id int64) (*Label, error) {
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	return getLabelInRepoByID(x, 0, id)
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}
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// GetLabelInRepoByID returns a label by ID in given repository.
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func GetLabelInRepoByID(repoID, labelID int64) (*Label, error) {
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	return getLabelInRepoByID(x, repoID, labelID)
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}
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// GetLabelsInRepoByIDs returns a list of labels by IDs in given repository,
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// it silently ignores label IDs that are not belong to the repository.
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func GetLabelsInRepoByIDs(repoID int64, labelIDs []int64) ([]*Label, error) {
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	labels := make([]*Label, 0, len(labelIDs))
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	return labels, x.
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		Where("repo_id = ?", repoID).
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		In("id", labelIDs).
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		Asc("name").
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		Find(&labels)
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}
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// GetLabelsByRepoID returns all labels that belong to given repository by ID.
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func GetLabelsByRepoID(repoID int64) ([]*Label, error) {
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	labels := make([]*Label, 0, 10)
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	return labels, x.
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		Where("repo_id = ?", repoID).
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		Asc("name").
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		Find(&labels)
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}
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func getLabelsByIssueID(e Engine, issueID int64) ([]*Label, error) {
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	issueLabels, err := getIssueLabels(e, issueID)
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	if err != nil {
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		return nil, fmt.Errorf("getIssueLabels: %v", err)
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	} else if len(issueLabels) == 0 {
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		return []*Label{}, nil
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	}
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	labelIDs := make([]int64, len(issueLabels))
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	for i := range issueLabels {
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		labelIDs[i] = issueLabels[i].LabelID
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	}
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	labels := make([]*Label, 0, len(labelIDs))
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	return labels, e.
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		Where("id > 0").
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		In("id", labelIDs).
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		Asc("name").
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		Find(&labels)
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}
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// GetLabelsByIssueID returns all labels that belong to given issue by ID.
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func GetLabelsByIssueID(issueID int64) ([]*Label, error) {
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	return getLabelsByIssueID(x, issueID)
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}
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func updateLabel(e Engine, l *Label) error {
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	_, err := e.Id(l.ID).AllCols().Update(l)
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	return err
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}
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// UpdateLabel updates label information.
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func UpdateLabel(l *Label) error {
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	return updateLabel(x, l)
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}
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// DeleteLabel delete a label of given repository.
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func DeleteLabel(repoID, labelID int64) error {
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	_, err := GetLabelInRepoByID(repoID, labelID)
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	if err != nil {
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		if IsErrLabelNotExist(err) {
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			return nil
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		}
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		return err
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	}
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	sess := x.NewSession()
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	defer sessionRelease(sess)
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	if err = sess.Begin(); err != nil {
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		return err
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	}
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	if _, err = sess.Id(labelID).Delete(new(Label)); err != nil {
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		return err
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	} else if _, err = sess.
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		Where("label_id = ?", labelID).
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		Delete(new(IssueLabel)); err != nil {
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		return err
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	}
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	return sess.Commit()
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}
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// .___                            .____          ___.          .__
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// |   | ______ ________ __   ____ |    |   _____ \_ |__   ____ |  |
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// |   |/  ___//  ___/  |  \_/ __ \|    |   \__  \ | __ \_/ __ \|  |
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// |   |\___ \ \___ \|  |  /\  ___/|    |___ / __ \| \_\ \  ___/|  |__
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// |___/____  >____  >____/  \___  >_______ (____  /___  /\___  >____/
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//          \/     \/            \/        \/    \/    \/     \/
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// IssueLabel represetns an issue-lable relation.
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type IssueLabel struct {
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	ID      int64 `xorm:"pk autoincr"`
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	IssueID int64 `xorm:"UNIQUE(s)"`
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	LabelID int64 `xorm:"UNIQUE(s)"`
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}
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func hasIssueLabel(e Engine, issueID, labelID int64) bool {
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	has, _ := e.Where("issue_id = ? AND label_id = ?", issueID, labelID).Get(new(IssueLabel))
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	return has
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}
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// HasIssueLabel returns true if issue has been labeled.
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func HasIssueLabel(issueID, labelID int64) bool {
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	return hasIssueLabel(x, issueID, labelID)
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}
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func newIssueLabel(e *xorm.Session, issue *Issue, label *Label) (err error) {
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	if _, err = e.Insert(&IssueLabel{
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		IssueID: issue.ID,
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		LabelID: label.ID,
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	}); err != nil {
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		return err
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	}
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	label.NumIssues++
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	if issue.IsClosed {
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		label.NumClosedIssues++
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	}
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	return updateLabel(e, label)
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}
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// NewIssueLabel creates a new issue-label relation.
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func NewIssueLabel(issue *Issue, label *Label) (err error) {
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	if HasIssueLabel(issue.ID, label.ID) {
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		return nil
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	}
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	sess := x.NewSession()
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	defer sessionRelease(sess)
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	if err = sess.Begin(); err != nil {
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		return err
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	}
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	if err = newIssueLabel(sess, issue, label); err != nil {
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		return err
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	}
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	return sess.Commit()
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}
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func newIssueLabels(e *xorm.Session, issue *Issue, labels []*Label) (err error) {
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	for i := range labels {
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		if hasIssueLabel(e, issue.ID, labels[i].ID) {
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			continue
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		}
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		if err = newIssueLabel(e, issue, labels[i]); err != nil {
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			return fmt.Errorf("newIssueLabel: %v", err)
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		}
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	}
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	return nil
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}
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// NewIssueLabels creates a list of issue-label relations.
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func NewIssueLabels(issue *Issue, labels []*Label) (err error) {
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	sess := x.NewSession()
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	defer sessionRelease(sess)
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	if err = sess.Begin(); err != nil {
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		return err
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	}
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	if err = newIssueLabels(sess, issue, labels); err != nil {
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		return err
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	}
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	return sess.Commit()
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}
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func getIssueLabels(e Engine, issueID int64) ([]*IssueLabel, error) {
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	issueLabels := make([]*IssueLabel, 0, 10)
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	return issueLabels, e.
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		Where("issue_id=?", issueID).
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		Asc("label_id").
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		Find(&issueLabels)
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}
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// GetIssueLabels returns all issue-label relations of given issue by ID.
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func GetIssueLabels(issueID int64) ([]*IssueLabel, error) {
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	return getIssueLabels(x, issueID)
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}
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func deleteIssueLabel(e *xorm.Session, issue *Issue, label *Label) (err error) {
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	if _, err = e.Delete(&IssueLabel{
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		IssueID: issue.ID,
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		LabelID: label.ID,
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	}); err != nil {
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		return err
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	}
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	label.NumIssues--
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	if issue.IsClosed {
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		label.NumClosedIssues--
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	}
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	return updateLabel(e, label)
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}
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// DeleteIssueLabel deletes issue-label relation.
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func DeleteIssueLabel(issue *Issue, label *Label) (err error) {
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	sess := x.NewSession()
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	defer sessionRelease(sess)
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	if err = sess.Begin(); err != nil {
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		return err
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	}
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	if err = deleteIssueLabel(sess, issue, label); err != nil {
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		return err
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	}
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	return sess.Commit()
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}
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