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// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"context"
"code.gitea.io/gitea/models/db"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
)
// WatchMode specifies what kind of watch the user has on a repository
type WatchMode int8
const (
// WatchModeNone don't watch
WatchModeNone WatchMode = iota // 0
// WatchModeNormal watch repository (from other sources)
WatchModeNormal // 1
// WatchModeDont explicit don't auto-watch
WatchModeDont // 2
// WatchModeAuto watch repository (from AutoWatchOnChanges)
WatchModeAuto // 3
)
// Watch is connection request for receiving repository notification.
type Watch struct {
ID int64 `xorm:"pk autoincr"`
UserID int64 `xorm:"UNIQUE(watch)"`
RepoID int64 `xorm:"UNIQUE(watch)"`
Mode WatchMode `xorm:"SMALLINT NOT NULL DEFAULT 1"`
CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
}
func init() {
db.RegisterModel(new(Watch))
}
// GetWatch gets what kind of subscription a user has on a given repository; returns dummy record if none found
func GetWatch(ctx context.Context, userID, repoID int64) (Watch, error) {
watch := Watch{UserID: userID, RepoID: repoID}
has, err := db.GetEngine(ctx).Get(&watch)
if err != nil {
return watch, err
}
if !has {
watch.Mode = WatchModeNone
}
return watch, nil
}
// IsWatchMode Decodes watchability of WatchMode
func IsWatchMode(mode WatchMode) bool {
return mode != WatchModeNone && mode != WatchModeDont
}
// IsWatching checks if user has watched given repository.
func IsWatching(userID, repoID int64) bool {
watch, err := GetWatch(db.DefaultContext, userID, repoID)
return err == nil && IsWatchMode(watch.Mode)
}
func watchRepoMode(ctx context.Context, watch Watch, mode WatchMode) (err error) {
if watch.Mode == mode {
return nil
}
if mode == WatchModeAuto && (watch.Mode == WatchModeDont || IsWatchMode(watch.Mode)) {
// Don't auto watch if already watching or deliberately not watching
return nil
}
hadrec := watch.Mode != WatchModeNone
needsrec := mode != WatchModeNone
repodiff := 0
if IsWatchMode(mode) && !IsWatchMode(watch.Mode) {
repodiff = 1
} else if !IsWatchMode(mode) && IsWatchMode(watch.Mode) {
repodiff = -1
}
watch.Mode = mode
e := db.GetEngine(ctx)
if !hadrec && needsrec {
watch.Mode = mode
if _, err = e.Insert(watch); err != nil {
return err
}
} else if needsrec {
watch.Mode = mode
if _, err := e.ID(watch.ID).AllCols().Update(watch); err != nil {
return err
}
} else if _, err = e.Delete(Watch{ID: watch.ID}); err != nil {
return err
}
if repodiff != 0 {
_, err = e.Exec("UPDATE `repository` SET num_watches = num_watches + ? WHERE id = ?", repodiff, watch.RepoID)
}
return err
}
// WatchRepoMode watch repository in specific mode.
func WatchRepoMode(userID, repoID int64, mode WatchMode) (err error) {
var watch Watch
if watch, err = GetWatch(db.DefaultContext, userID, repoID); err != nil {
return err
}
return watchRepoMode(db.DefaultContext, watch, mode)
}
// WatchRepo watch or unwatch repository.
func WatchRepo(ctx context.Context, userID, repoID int64, doWatch bool) (err error) {
var watch Watch
if watch, err = GetWatch(ctx, userID, repoID); err != nil {
return err
}
if !doWatch && watch.Mode == WatchModeAuto {
err = watchRepoMode(ctx, watch, WatchModeDont)
} else if !doWatch {
err = watchRepoMode(ctx, watch, WatchModeNone)
} else {
err = watchRepoMode(ctx, watch, WatchModeNormal)
}
return err
}
// GetWatchers returns all watchers of given repository.
func GetWatchers(ctx context.Context, repoID int64) ([]*Watch, error) {
watches := make([]*Watch, 0, 10)
return watches, db.GetEngine(ctx).Where("`watch`.repo_id=?", repoID).
And("`watch`.mode<>?", WatchModeDont).
And("`user`.is_active=?", true).
And("`user`.prohibit_login=?", false).
Join("INNER", "`user`", "`user`.id = `watch`.user_id").
Find(&watches)
}
// GetRepoWatchersIDs returns IDs of watchers for a given repo ID
// but avoids joining with `user` for performance reasons
// User permissions must be verified elsewhere if required
func GetRepoWatchersIDs(ctx context.Context, repoID int64) ([]int64, error) {
ids := make([]int64, 0, 64)
return ids, db.GetEngine(ctx).Table("watch").
Where("watch.repo_id=?", repoID).
And("watch.mode<>?", WatchModeDont).
Select("user_id").
Find(&ids)
}
// GetRepoWatchers returns range of users watching given repository.
func GetRepoWatchers(repoID int64, opts db.ListOptions) ([]*user_model.User, error) {
sess := db.GetEngine(db.DefaultContext).Where("watch.repo_id=?", repoID).
Join("LEFT", "watch", "`user`.id=`watch`.user_id").
And("`watch`.mode<>?", WatchModeDont)
if opts.Page > 0 {
sess = db.SetSessionPagination(sess, &opts)
users := make([]*user_model.User, 0, opts.PageSize)
return users, sess.Find(&users)
}
users := make([]*user_model.User, 0, 8)
return users, sess.Find(&users)
}
// WatchIfAuto subscribes to repo if AutoWatchOnChanges is set
func WatchIfAuto(ctx context.Context, userID, repoID int64, isWrite bool) error {
if !isWrite || !setting.Service.AutoWatchOnChanges {
return nil
}
watch, err := GetWatch(ctx, userID, repoID)
if err != nil {
return err
}
if watch.Mode != WatchModeNone {
return nil
}
return watchRepoMode(ctx, watch, WatchModeAuto)
}
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