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// Copyright 2019 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 mailer
import (
"fmt"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/references"
)
func fallbackMailSubject(issue *models.Issue) string {
return fmt.Sprintf("[%s] %s (#%d)", issue.Repo.FullName(), issue.Title, issue.Index)
}
type mailCommentContext struct {
Issue *models.Issue
Doer *models.User
ActionType models.ActionType
Content string
Comment *models.Comment
}
// mailIssueCommentToParticipants can be used for both new issue creation and comment.
// This function sends two list of emails:
// 1. Repository watchers and users who are participated in comments.
// 2. Users who are not in 1. but get mentioned in current issue/comment.
func mailIssueCommentToParticipants(ctx *mailCommentContext, mentions []int64) error {
// Required by the mail composer; make sure to load these before calling the async function
if err := ctx.Issue.LoadRepo(); err != nil {
return fmt.Errorf("LoadRepo(): %v", err)
}
if err := ctx.Issue.LoadPoster(); err != nil {
return fmt.Errorf("LoadPoster(): %v", err)
}
if err := ctx.Issue.LoadPullRequest(); err != nil {
return fmt.Errorf("LoadPullRequest(): %v", err)
}
// Enough room to avoid reallocations
unfiltered := make([]int64, 1, 64)
// =========== Original poster ===========
unfiltered[0] = ctx.Issue.PosterID
// =========== Assignees ===========
ids, err := models.GetAssigneeIDsByIssue(ctx.Issue.ID)
if err != nil {
return fmt.Errorf("GetAssigneeIDsByIssue(%d): %v", ctx.Issue.ID, err)
}
unfiltered = append(unfiltered, ids...)
// =========== Participants (i.e. commenters, reviewers) ===========
ids, err = models.GetParticipantsIDsByIssueID(ctx.Issue.ID)
if err != nil {
return fmt.Errorf("GetParticipantsIDsByIssueID(%d): %v", ctx.Issue.ID, err)
}
unfiltered = append(unfiltered, ids...)
// =========== Issue watchers ===========
ids, err = models.GetIssueWatchersIDs(ctx.Issue.ID, true)
if err != nil {
return fmt.Errorf("GetIssueWatchersIDs(%d): %v", ctx.Issue.ID, err)
}
unfiltered = append(unfiltered, ids...)
// =========== Repo watchers ===========
// Make repo watchers last, since it's likely the list with the most users
ids, err = models.GetRepoWatchersIDs(ctx.Issue.RepoID)
if err != nil {
return fmt.Errorf("GetRepoWatchersIDs(%d): %v", ctx.Issue.RepoID, err)
}
unfiltered = append(ids, unfiltered...)
visited := make(map[int64]bool, len(unfiltered)+len(mentions)+1)
// Avoid mailing the doer
visited[ctx.Doer.ID] = true
// Avoid mailing explicit unwatched
ids, err = models.GetIssueWatchersIDs(ctx.Issue.ID, false)
if err != nil {
return fmt.Errorf("GetIssueWatchersIDs(%d): %v", ctx.Issue.ID, err)
}
for _, i := range ids {
visited[i] = true
}
if err = mailIssueCommentBatch(ctx, unfiltered, visited, false); err != nil {
return fmt.Errorf("mailIssueCommentBatch(): %v", err)
}
// =========== Mentions ===========
if err = mailIssueCommentBatch(ctx, mentions, visited, true); err != nil {
return fmt.Errorf("mailIssueCommentBatch() mentions: %v", err)
}
return nil
}
func mailIssueCommentBatch(ctx *mailCommentContext, ids []int64, visited map[int64]bool, fromMention bool) error {
const batchSize = 100
for i := 0; i < len(ids); i += batchSize {
var last int
if i+batchSize < len(ids) {
last = i + batchSize
} else {
last = len(ids)
}
unique := make([]int64, 0, last-i)
for j := i; j < last; j++ {
id := ids[j]
if _, ok := visited[id]; !ok {
unique = append(unique, id)
visited[id] = true
}
}
recipients, err := models.GetMaileableUsersByIDs(unique)
if err != nil {
return err
}
// TODO: Check issue visibility for each user
// TODO: Separate recipients by language for i18n mail templates
tos := make([]string, len(recipients))
for i := range recipients {
tos[i] = recipients[i].Email
}
SendAsyncs(composeIssueCommentMessages(ctx, tos, fromMention, "issue comments"))
}
return nil
}
// MailParticipants sends new issue thread created emails to repository watchers
// and mentioned people.
func MailParticipants(issue *models.Issue, doer *models.User, opType models.ActionType) error {
return mailParticipants(models.DefaultDBContext(), issue, doer, opType)
}
func mailParticipants(ctx models.DBContext, issue *models.Issue, doer *models.User, opType models.ActionType) (err error) {
rawMentions := references.FindAllMentionsMarkdown(issue.Content)
userMentions, err := issue.ResolveMentionsByVisibility(ctx, doer, rawMentions)
if err != nil {
return fmt.Errorf("ResolveMentionsByVisibility [%d]: %v", issue.ID, err)
}
if err = models.UpdateIssueMentions(ctx, issue.ID, userMentions); err != nil {
return fmt.Errorf("UpdateIssueMentions [%d]: %v", issue.ID, err)
}
mentions := make([]int64, len(userMentions))
for i, u := range userMentions {
mentions[i] = u.ID
}
if err = mailIssueCommentToParticipants(
&mailCommentContext{
Issue: issue,
Doer: doer,
ActionType: opType,
Content: issue.Content,
Comment: nil,
}, mentions); err != nil {
log.Error("mailIssueCommentToParticipants: %v", err)
}
return nil
}
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