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// Copyright 2016 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 repo
import (
"context"
"code.gitea.io/gitea/models/db"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/timeutil"
)
// Star represents a starred repo by an user.
type Star struct {
ID int64 `xorm:"pk autoincr"`
UID int64 `xorm:"UNIQUE(s)"`
RepoID int64 `xorm:"UNIQUE(s)"`
CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
}
func init() {
db.RegisterModel(new(Star))
}
// StarRepo or unstar repository.
func StarRepo(userID, repoID int64, star bool) error {
ctx, committer, err := db.TxContext()
if err != nil {
return err
}
defer committer.Close()
staring := IsStaring(ctx, userID, repoID)
if star {
if staring {
return nil
}
if err := db.Insert(ctx, &Star{UID: userID, RepoID: repoID}); err != nil {
return err
}
if _, err := db.Exec(ctx, "UPDATE `repository` SET num_stars = num_stars + 1 WHERE id = ?", repoID); err != nil {
return err
}
if _, err := db.Exec(ctx, "UPDATE `user` SET num_stars = num_stars + 1 WHERE id = ?", userID); err != nil {
return err
}
} else {
if !staring {
return nil
}
if _, err := db.DeleteByBean(ctx, &Star{UID: userID, RepoID: repoID}); err != nil {
return err
}
if _, err := db.Exec(ctx, "UPDATE `repository` SET num_stars = num_stars - 1 WHERE id = ?", repoID); err != nil {
return err
}
if _, err := db.Exec(ctx, "UPDATE `user` SET num_stars = num_stars - 1 WHERE id = ?", userID); err != nil {
return err
}
}
return committer.Commit()
}
// IsStaring checks if user has starred given repository.
func IsStaring(ctx context.Context, userID, repoID int64) bool {
has, _ := db.GetEngine(ctx).Get(&Star{UID: userID, RepoID: repoID})
return has
}
// GetStargazers returns the users that starred the repo.
func GetStargazers(repo *Repository, opts db.ListOptions) ([]*user_model.User, error) {
sess := db.GetEngine(db.DefaultContext).Where("star.repo_id = ?", repo.ID).
Join("LEFT", "star", "`user`.id = star.uid")
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)
}
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