// Copyright 2017 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 (
"bytes"
"fmt"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"xorm.io/builder"
"xorm.io/xorm"
)
// Reaction represents a reactions on issues and comments.
type Reaction struct {
ID int64 `xorm:"pk autoincr"`
Type string `xorm:"INDEX UNIQUE(s) NOT NULL"`
IssueID int64 `xorm:"INDEX UNIQUE(s) NOT NULL"`
CommentID int64 `xorm:"INDEX UNIQUE(s)"`
UserID int64 `xorm:"INDEX UNIQUE(s) NOT NULL"`
User *User `xorm:"-"`
CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
}
// FindReactionsOptions describes the conditions to Find reactions
type FindReactionsOptions struct {
IssueID int64
CommentID int64
UserID int64
Reaction string
}
func (opts *FindReactionsOptions) toConds() builder.Cond {
//If Issue ID is set add to Query
var cond = builder.NewCond()
if opts.IssueID > 0 {
cond = cond.And(builder.Eq{"reaction.issue_id": opts.IssueID})
}
//If CommentID is > 0 add to Query
//If it is 0 Query ignore CommentID to select
//If it is -1 it explicit search of Issue Reactions where CommentID = 0
if opts.CommentID > 0 {
cond = cond.And(builder.Eq{"reaction.comment_id": opts.CommentID})
} else if opts.CommentID == -1 {
cond = cond.And(builder.Eq{"reaction.comment_id": 0})
}
if opts.UserID > 0 {
cond = cond.And(builder.Eq{"reaction.user_id": opts.UserID})
}
if opts.Reaction != "" {
cond = cond.And(builder.Eq{"reaction.type": opts.Reaction})
}
return cond
}
// FindCommentReactions returns a ReactionList of all reactions from an comment
func FindCommentReactions(comment *Comment) (ReactionList, error) {
return findReactions(x, FindReactionsOptions{
IssueID: comment.IssueID,
CommentID: comment.ID})
}
// FindIssueReactions returns a ReactionList of all reactions from an issue
func FindIssueReactions(issue *Issue) (ReactionList, error) {
return findReactions(x, FindReactionsOptions{
IssueID: issue.ID,
CommentID: -1,
})
}
func findReactions(e Engine, opts FindReactionsOptions) ([]*Reaction, error) {
reactions := make([]*Reaction, 0, 10)
sess := e.Where(opts.toConds())
return reactions, sess.
In("reaction.`type`", setting.UI.Reactions).
Asc("reaction.issue_id", "reaction.comment_id", "reaction.created_unix", "reaction.id").
Find(&reactions)
}
func createReaction(e *xorm.Session, opts *ReactionOptions) (*Reaction, error) {
reaction := &Reaction{
Type: opts.Type,
UserID: opts.Doer.ID,
IssueID: opts.Issue.ID,
}
findOpts := FindReactionsOptions{
IssueID: opts.Issue.ID,
CommentID: -1, // reaction to issue only
Reaction: opts.Type,
UserID: opts.Doer.ID,
}
if opts.Comment != nil {
reaction.CommentID = opts.Comment.ID
findOpts.CommentID = opts.Comment.ID
}
existingR, err := findReactions(e, findOpts)
if err != nil {
return nil, err
}
if len(existingR) > 0 {
return existingR[0], ErrReactionAlreadyExist{Reaction: opts.Type}
}
if _, err := e.Insert(reaction); err != nil {
return nil, err
}
return reaction, nil
}
// ReactionOptions defines options for creating or deleting reactions
type ReactionOptions struct {
Type string
Doer *User
Issue *Issue
Comment *Comment
}
// CreateReaction creates reaction for issue or comment.
func CreateReaction(opts *ReactionOptions) (*Reaction, error) {
if !setting.UI.ReactionsMap[opts.Type] {
return nil, ErrForbiddenIssueReaction{opts.Type}
}
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return nil, err
}
reaction, err := createReaction(sess, opts)
if err != nil {
return reaction, err
}
if err := sess.Commit(); err != nil {
return nil, err
}
return reaction, nil
}
// CreateIssueReaction creates a reaction on issue.
func CreateIssueReaction(doer *User, issue *Issue, content string) (*Reaction, error) {
return CreateReaction(&ReactionOptions{
Type: content,
Doer: doer,
Issue: issue,
})
}
// CreateCommentReaction creates a reaction on comment.
func CreateCommentReaction(doer *User, issue *Issue, comment *Comment, content string) (*Reaction, error) {
return CreateReaction(&ReactionOptions{
Type: content,
Doer: doer,
Issue: issue,
Comment: comment,
})
}
func deleteReaction(e *xorm.Session, opts *ReactionOptions) error {
reaction := &Reaction{
Type: opts.Type,
UserID: opts.Doer.ID,
IssueID: opts.Issue.ID,
}
if opts.Comment != nil {
reaction.CommentID = opts.Comment.ID
}
_, err := e.Delete(reaction)
return err
}
// DeleteReaction deletes reaction for issue or comment.
func DeleteReaction(opts *ReactionOptions) error {
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
if err := deleteReaction(sess, opts); err != nil {
return err
}
return sess.Commit()
}
// DeleteIssueReaction deletes a reaction on issue.
func DeleteIssueReaction(doer *User, issue *Issue, content string) error {
return DeleteReaction(&ReactionOptions{
Type: content,
Doer: doer,
Issue: issue,
})
}
// DeleteCommentReaction deletes a reaction on comment.
func DeleteCommentReaction(doer *User, issue *Issue, comment *Comment, content string) error {
return DeleteReaction(&ReactionOptions{
Type: content,
Doer: doer,
Issue: issue,
Comment: comment,
})
}
// LoadUser load user of reaction
func (r *Reaction) LoadUser() (*User, error) {
if r.User != nil {
return r.User, nil
}
user, err := getUserByID(x, r.UserID)
if err != nil {
return nil, err
}
r.User = user
return user, nil
}
// ReactionList represents list of reactions
type ReactionList []*Reaction
// HasUser check if user has reacted
func (list ReactionList) HasUser(userID int64) bool {
if userID == 0 {
return false
}
for _, reaction := range list {
if reaction.UserID == userID {
return true
}
}
return false
}
// GroupByType returns reactions grouped by type
func (list ReactionList) GroupByType() map[string]ReactionList {
var reactions = make(map[string]ReactionList)
for _, reaction := range list {
reactions[reaction.Type] = append(reactions[reaction.Type], reaction)
}
return reactions
}
func (list ReactionList) getUserIDs() []int64 {
userIDs := make(map[int64]struct{}, len(list))
for _, reaction := range list {
if _, ok := userIDs[reaction.UserID]; !ok {
userIDs[reaction.UserID] = struct{}{}
}
}
return keysInt64(userIDs)
}
func (list ReactionList) loadUsers(e Engine) ([]*User, error) {
if len(list) == 0 {
return nil, nil
}
userIDs := list.getUserIDs()
userMaps := make(map[int64]*User, len(userIDs))
err := e.
In("id", userIDs).
Find(&userMaps)
if err != nil {
return nil, fmt.Errorf("find user: %v", err)
}
for _, reaction := range list {
if user, ok := userMaps[reaction.UserID]; ok {
reaction.User = user
} else {
reaction.User = NewGhostUser()
}
}
return valuesUser(userMaps), nil
}
// LoadUsers loads reactions' all users
func (list ReactionList) LoadUsers() ([]*User, error) {
return list.loadUsers(x)
}
// GetFirstUsers returns first reacted user display names separated by comma
func (list ReactionList) GetFirstUsers() string {
var buffer bytes.Buffer
var rem = setting.UI.ReactionMaxUserNum
for _, reaction := range list {
if buffer.Len() > 0 {
buffer.WriteString(", ")
}
buffer.WriteString(reaction.User.DisplayName())
if rem--; rem == 0 {
break
}
}
return buffer.String()
}
// GetMoreUserCount returns count of not shown users in reaction tooltip
func (list ReactionList) GetMoreUserCount() int {
if len(list) <= setting.UI.ReactionMaxUserNum {
return 0
}
return len(list) - setting.UI.ReactionMaxUserNum
}
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