Migrate reactions when migrating repository from github (#9599)

* Migrate reactions when migrating repository from github

* fix missed sleep

* fix tests

* update reactions when external user binding

* Fix test

* fix tests

* change the copy head

* fix test

* fix migrator add/delete reaction

18 files changed, 329 insertions, 101 deletions

diff --git a/models/external_login_user.go b/models/external_login_user.go
index 265d855ccf..6585e49fef 100644
--- a/models/external_login_user.go
+++ b/models/external_login_user.go
@@ -177,5 +177,9 @@ func UpdateMigrationsByType(tp structs.GitServiceType, externalUserID string, us
 		return err
 	}
 
-	return UpdateReleasesMigrationsByType(tp, externalUserID, userID)
+	if err := UpdateReleasesMigrationsByType(tp, externalUserID, userID); err != nil {
+		return err
+	}
+
+	return UpdateReactionsMigrationsByType(tp, externalUserID, userID)
 }
diff --git a/models/issue.go b/models/issue.go
index b6408365f7..1c6b930d2e 100644
--- a/models/issue.go
+++ b/models/issue.go
@@ -218,8 +218,11 @@ func (issue *Issue) loadReactions(e Engine) (err error) {
 	if err != nil {
 		return err
 	}
+	if err = issue.loadRepo(e); err != nil {
+		return err
+	}
 	// Load reaction user data
-	if _, err := ReactionList(reactions).loadUsers(e); err != nil {
+	if _, err := ReactionList(reactions).loadUsers(e, issue.Repo); err != nil {
 		return err
 	}
 
@@ -1836,3 +1839,17 @@ func UpdateIssuesMigrationsByType(gitServiceType structs.GitServiceType, origina
 		})
 	return err
 }
+
+// UpdateReactionsMigrationsByType updates all migrated repositories' reactions from gitServiceType to replace originalAuthorID to posterID
+func UpdateReactionsMigrationsByType(gitServiceType structs.GitServiceType, originalAuthorID string, userID int64) error {
+	_, err := x.Table("reaction").
+		Join("INNER", "issue", "issue.id = reaction.issue_id").
+		Where("issue.repo_id IN (SELECT id FROM repository WHERE original_service_type = ?)", gitServiceType).
+		And("reaction.original_author_id = ?", originalAuthorID).
+		Update(map[string]interface{}{
+			"user_id":            userID,
+			"original_author":    "",
+			"original_author_id": 0,
+		})
+	return err
+}
diff --git a/models/issue_comment.go b/models/issue_comment.go
index 699b8f0487..a2e1987746 100644
--- a/models/issue_comment.go
+++ b/models/issue_comment.go
@@ -425,7 +425,7 @@ func (c *Comment) LoadDepIssueDetails() (err error) {
 	return err
 }
 
-func (c *Comment) loadReactions(e Engine) (err error) {
+func (c *Comment) loadReactions(e Engine, repo *Repository) (err error) {
 	if c.Reactions != nil {
 		return nil
 	}
@@ -437,15 +437,15 @@ func (c *Comment) loadReactions(e Engine) (err error) {
 		return err
 	}
 	// Load reaction user data
-	if _, err := c.Reactions.LoadUsers(); err != nil {
+	if _, err := c.Reactions.loadUsers(e, repo); err != nil {
 		return err
 	}
 	return nil
 }
 
 // LoadReactions loads comment reactions
-func (c *Comment) LoadReactions() error {
-	return c.loadReactions(x)
+func (c *Comment) LoadReactions(repo *Repository) error {
+	return c.loadReactions(x, repo)
 }
 
 func (c *Comment) loadReview(e Engine) (err error) {
diff --git a/models/issue_reaction.go b/models/issue_reaction.go
index d421ab44e9..5c3bf9d06e 100644
--- a/models/issue_reaction.go
+++ b/models/issue_reaction.go
@@ -17,13 +17,15 @@ import (
 
 // 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"`
+	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"`
+	OriginalAuthorID int64  `xorm:"INDEX UNIQUE(s) NOT NULL DEFAULT(0)"`
+	OriginalAuthor   string
+	User             *User              `xorm:"-"`
+	CreatedUnix      timeutil.TimeStamp `xorm:"INDEX created"`
 }
 
 // FindReactionsOptions describes the conditions to Find reactions
@@ -49,7 +51,10 @@ func (opts *FindReactionsOptions) toConds() builder.Cond {
 		cond = cond.And(builder.Eq{"reaction.comment_id": 0})
 	}
 	if opts.UserID > 0 {
-		cond = cond.And(builder.Eq{"reaction.user_id": opts.UserID})
+		cond = cond.And(builder.Eq{
+			"reaction.user_id":            opts.UserID,
+			"reaction.original_author_id": 0,
+		})
 	}
 	if opts.Reaction != "" {
 		cond = cond.And(builder.Eq{"reaction.type": opts.Reaction})
@@ -173,7 +178,7 @@ func deleteReaction(e *xorm.Session, opts *ReactionOptions) error {
 	if opts.Comment != nil {
 		reaction.CommentID = opts.Comment.ID
 	}
-	_, err := e.Delete(reaction)
+	_, err := e.Where("original_author_id = 0").Delete(reaction)
 	return err
 }
 
@@ -233,7 +238,7 @@ func (list ReactionList) HasUser(userID int64) bool {
 		return false
 	}
 	for _, reaction := range list {
-		if reaction.UserID == userID {
+		if reaction.OriginalAuthor == "" && reaction.UserID == userID {
 			return true
 		}
 	}
@@ -252,6 +257,9 @@ func (list ReactionList) GroupByType() map[string]ReactionList {
 func (list ReactionList) getUserIDs() []int64 {
 	userIDs := make(map[int64]struct{}, len(list))
 	for _, reaction := range list {
+		if reaction.OriginalAuthor != "" {
+			continue
+		}
 		if _, ok := userIDs[reaction.UserID]; !ok {
 			userIDs[reaction.UserID] = struct{}{}
 		}
@@ -259,7 +267,7 @@ func (list ReactionList) getUserIDs() []int64 {
 	return keysInt64(userIDs)
 }
 
-func (list ReactionList) loadUsers(e Engine) ([]*User, error) {
+func (list ReactionList) loadUsers(e Engine, repo *Repository) ([]*User, error) {
 	if len(list) == 0 {
 		return nil, nil
 	}
@@ -274,7 +282,9 @@ func (list ReactionList) loadUsers(e Engine) ([]*User, error) {
 	}
 
 	for _, reaction := range list {
-		if user, ok := userMaps[reaction.UserID]; ok {
+		if reaction.OriginalAuthor != "" {
+			reaction.User = NewReplaceUser(fmt.Sprintf("%s(%s)", reaction.OriginalAuthor, repo.OriginalServiceType.Name()))
+		} else if user, ok := userMaps[reaction.UserID]; ok {
 			reaction.User = user
 		} else {
 			reaction.User = NewGhostUser()
@@ -284,8 +294,8 @@ func (list ReactionList) loadUsers(e Engine) ([]*User, error) {
 }
 
 // LoadUsers loads reactions' all users
-func (list ReactionList) LoadUsers() ([]*User, error) {
-	return list.loadUsers(x)
+func (list ReactionList) LoadUsers(repo *Repository) ([]*User, error) {
+	return list.loadUsers(x, repo)
 }
 
 // GetFirstUsers returns first reacted user display names separated by comma
diff --git a/models/issue_reaction_test.go b/models/issue_reaction_test.go
index 723a6be536..e7aa45e4c3 100644
--- a/models/issue_reaction_test.go
+++ b/models/issue_reaction_test.go
@@ -132,6 +132,7 @@ func TestIssueCommentDeleteReaction(t *testing.T) {
 	user4 := AssertExistsAndLoadBean(t, &User{ID: 4}).(*User)
 
 	issue1 := AssertExistsAndLoadBean(t, &Issue{ID: 1}).(*Issue)
+	repo1 := AssertExistsAndLoadBean(t, &Repository{ID: issue1.RepoID}).(*Repository)
 
 	comment1 := AssertExistsAndLoadBean(t, &Comment{ID: 1}).(*Comment)
 
@@ -140,7 +141,7 @@ func TestIssueCommentDeleteReaction(t *testing.T) {
 	addReaction(t, user3, issue1, comment1, "heart")
 	addReaction(t, user4, issue1, comment1, "+1")
 
-	err := comment1.LoadReactions()
+	err := comment1.LoadReactions(repo1)
 	assert.NoError(t, err)
 	assert.Len(t, comment1.Reactions, 4)
 
diff --git a/models/migrate.go b/models/migrate.go
index 53838fd65e..fd28fd156f 100644
--- a/models/migrate.go
+++ b/models/migrate.go
@@ -63,6 +63,13 @@ func insertIssue(sess *xorm.Session, issue *Issue) error {
 		return err
 	}
 
+	for _, reaction := range issue.Reactions {
+		reaction.IssueID = issue.ID
+	}
+	if _, err := sess.Insert(issue.Reactions); err != nil {
+		return err
+	}
+
 	cols := make([]string, 0)
 	if !issue.IsPull {
 		sess.ID(issue.RepoID).Incr("num_issues")
@@ -130,9 +137,20 @@ func InsertIssueComments(comments []*Comment) error {
 	if err := sess.Begin(); err != nil {
 		return err
 	}
-	if _, err := sess.NoAutoTime().Insert(comments); err != nil {
-		return err
+	for _, comment := range comments {
+		if _, err := sess.NoAutoTime().Insert(comment); err != nil {
+			return err
+		}
+
+		for _, reaction := range comment.Reactions {
+			reaction.IssueID = comment.IssueID
+			reaction.CommentID = comment.ID
+		}
+		if _, err := sess.Insert(comment.Reactions); err != nil {
+			return err
+		}
 	}
+
 	for issueID := range issueIDs {
 		if _, err := sess.Exec("UPDATE issue set num_comments = (SELECT count(*) FROM comment WHERE issue_id = ?) WHERE id = ?", issueID, issueID); err != nil {
 			return err
diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index edea36cf79..e86ca8e4fe 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -300,6 +300,8 @@ var migrations = []Migration{
 	NewMigration("add is_restricted column for users table", addIsRestricted),
 	// v122 -> v123
 	NewMigration("Add Require Signed Commits to ProtectedBranch", addRequireSignedCommits),
+	// v123 -> v124
+	NewMigration("Add original informations for reactions", addReactionOriginals),
 }
 
 // Migrate database to current version
diff --git a/models/migrations/v123.go b/models/migrations/v123.go
new file mode 100644
index 0000000000..e1b772381e
--- /dev/null
+++ b/models/migrations/v123.go
@@ -0,0 +1,18 @@
+// Copyright 2020 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 migrations
+
+import (
+	"xorm.io/xorm"
+)
+
+func addReactionOriginals(x *xorm.Engine) error {
+	type Reaction struct {
+		OriginalAuthorID int64 `xorm:"INDEX NOT NULL DEFAULT(0)"`
+		OriginalAuthor   string
+	}
+
+	return x.Sync2(new(Reaction))
+}
diff --git a/models/user.go b/models/user.go
index ea1d110807..d7129fb09a 100644
--- a/models/user.go
+++ b/models/user.go
@@ -793,6 +793,15 @@ func NewGhostUser() *User {
 	}
 }
 
+// NewReplaceUser creates and returns a fake user for external user
+func NewReplaceUser(name string) *User {
+	return &User{
+		ID:        -1,
+		Name:      name,
+		LowerName: strings.ToLower(name),
+	}
+}
+
 // IsGhost check if user is fake user for a deleted account
 func (u *User) IsGhost() bool {
 	if u == nil {
diff --git a/modules/migrations/base/comment.go b/modules/migrations/base/comment.go
index 94cbabaae6..4a653e474b 100644
--- a/modules/migrations/base/comment.go
+++ b/modules/migrations/base/comment.go
@@ -16,5 +16,5 @@ type Comment struct {
 	Created     time.Time
 	Updated     time.Time
 	Content     string
-	Reactions   *Reactions
+	Reactions   []*Reaction
 }
diff --git a/modules/migrations/base/issue.go b/modules/migrations/base/issue.go
index b87a7fec62..4e2bf25f17 100644
--- a/modules/migrations/base/issue.go
+++ b/modules/migrations/base/issue.go
@@ -22,5 +22,5 @@ type Issue struct {
 	Updated     time.Time
 	Closed      *time.Time
 	Labels      []*Label
-	Reactions   *Reactions
+	Reactions   []*Reaction
 }
diff --git a/modules/migrations/base/pullrequest.go b/modules/migrations/base/pullrequest.go
index b1602b8218..3a1e0f25bd 100644
--- a/modules/migrations/base/pullrequest.go
+++ b/modules/migrations/base/pullrequest.go
@@ -33,6 +33,7 @@ type PullRequest struct {
 	Assignee       string
 	Assignees      []string
 	IsLocked       bool
+	Reactions      []*Reaction
 }
 
 // IsForkPullRequest returns true if the pull request from a forked repository but not the same repository
diff --git a/modules/migrations/base/reaction.go b/modules/migrations/base/reaction.go
index fd7a9543d3..b79223d4cd 100644
--- a/modules/migrations/base/reaction.go
+++ b/modules/migrations/base/reaction.go
@@ -1,17 +1,12 @@
-// Copyright 2019 The Gitea Authors. All rights reserved.
-// Copyright 2018 Jonas Franz. All rights reserved.
+// Copyright 2020 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 base
 
-// Reactions represents a summary of reactions.
-type Reactions struct {
-	TotalCount int
-	PlusOne    int
-	MinusOne   int
-	Laugh      int
-	Confused   int
-	Heart      int
-	Hooray     int
+// Reaction represents a reaction to an issue/pr/comment.
+type Reaction struct {
+	UserID   int64
+	UserName string
+	Content  string
 }
diff --git a/modules/migrations/gitea.go b/modules/migrations/gitea.go
index 0cffd60e84..82664d0d1a 100644
--- a/modules/migrations/gitea.go
+++ b/modules/migrations/gitea.go
@@ -361,7 +361,32 @@ func (g *GiteaLocalUploader) CreateIssues(issues ...*base.Issue) error {
 		if issue.Closed != nil {
 			is.ClosedUnix = timeutil.TimeStamp(issue.Closed.Unix())
 		}
-		// TODO: add reactions
+		// add reactions
+		for _, reaction := range issue.Reactions {
+			userid, ok := g.userMap[reaction.UserID]
+			if !ok && tp != "" {
+				var err error
+				userid, err = models.GetUserIDByExternalUserID(tp, fmt.Sprintf("%v", reaction.UserID))
+				if err != nil {
+					log.Error("GetUserIDByExternalUserID: %v", err)
+				}
+				if userid > 0 {
+					g.userMap[reaction.UserID] = userid
+				}
+			}
+			var res = models.Reaction{
+				Type:        reaction.Content,
+				CreatedUnix: timeutil.TimeStampNow(),
+			}
+			if userid > 0 {
+				res.UserID = userid
+			} else {
+				res.UserID = g.doer.ID
+				res.OriginalAuthorID = reaction.UserID
+				res.OriginalAuthor = reaction.UserName
+			}
+			is.Reactions = append(is.Reactions, &res)
+		}
 		iss = append(iss, &is)
 	}
 
@@ -420,9 +445,34 @@ func (g *GiteaLocalUploader) CreateComments(comments ...*base.Comment) error {
 			cm.OriginalAuthorID = comment.PosterID
 		}
 
-		cms = append(cms, &cm)
+		// add reactions
+		for _, reaction := range comment.Reactions {
+			userid, ok := g.userMap[reaction.UserID]
+			if !ok && tp != "" {
+				var err error
+				userid, err = models.GetUserIDByExternalUserID(tp, fmt.Sprintf("%v", reaction.UserID))
+				if err != nil {
+					log.Error("GetUserIDByExternalUserID: %v", err)
+				}
+				if userid > 0 {
+					g.userMap[reaction.UserID] = userid
+				}
+			}
+			var res = models.Reaction{
+				Type:        reaction.Content,
+				CreatedUnix: timeutil.TimeStampNow(),
+			}
+			if userid > 0 {
+				res.UserID = userid
+			} else {
+				res.UserID = g.doer.ID
+				res.OriginalAuthorID = reaction.UserID
+				res.OriginalAuthor = reaction.UserName
+			}
+			cm.Reactions = append(cm.Reactions, &res)
+		}
 
-		// TODO: Reactions
+		cms = append(cms, &cm)
 	}
 
 	return models.InsertIssueComments(cms)
@@ -581,10 +631,12 @@ func (g *GiteaLocalUploader) newPullRequest(pr *base.PullRequest) (*models.PullR
 		UpdatedUnix: timeutil.TimeStamp(pr.Updated.Unix()),
 	}
 
+	tp := g.gitServiceType.Name()
+
 	userid, ok := g.userMap[pr.PosterID]
-	if !ok {
+	if !ok && tp != "" {
 		var err error
-		userid, err = models.GetUserIDByExternalUserID("github", fmt.Sprintf("%v", pr.PosterID))
+		userid, err = models.GetUserIDByExternalUserID(tp, fmt.Sprintf("%v", pr.PosterID))
 		if err != nil {
 			log.Error("GetUserIDByExternalUserID: %v", err)
 		}
@@ -601,6 +653,33 @@ func (g *GiteaLocalUploader) newPullRequest(pr *base.PullRequest) (*models.PullR
 		issue.OriginalAuthorID = pr.PosterID
 	}
 
+	// add reactions
+	for _, reaction := range pr.Reactions {
+		userid, ok := g.userMap[reaction.UserID]
+		if !ok && tp != "" {
+			var err error
+			userid, err = models.GetUserIDByExternalUserID(tp, fmt.Sprintf("%v", reaction.UserID))
+			if err != nil {
+				log.Error("GetUserIDByExternalUserID: %v", err)
+			}
+			if userid > 0 {
+				g.userMap[reaction.UserID] = userid
+			}
+		}
+		var res = models.Reaction{
+			Type:        reaction.Content,
+			CreatedUnix: timeutil.TimeStampNow(),
+		}
+		if userid > 0 {
+			res.UserID = userid
+		} else {
+			res.UserID = g.doer.ID
+			res.OriginalAuthorID = reaction.UserID
+			res.OriginalAuthor = reaction.UserName
+		}
+		issue.Reactions = append(issue.Reactions, &res)
+	}
+
 	var pullRequest = models.PullRequest{
 		HeadRepoID: g.repo.ID,
 		HeadBranch: head,
@@ -622,7 +701,6 @@ func (g *GiteaLocalUploader) newPullRequest(pr *base.PullRequest) (*models.PullR
 		pullRequest.MergerID = g.doer.ID
 	}
 
-	// TODO: reactions
 	// TODO: assignees
 
 	return &pullRequest, nil
diff --git a/modules/migrations/github.go b/modules/migrations/github.go
index 9183c9318f..17e49d90d1 100644
--- a/modules/migrations/github.go
+++ b/modules/migrations/github.go
@@ -319,18 +319,6 @@ func (g *GithubDownloaderV3) GetReleases() ([]*base.Release, error) {
 	return releases, nil
 }
 
-func convertGithubReactions(reactions *github.Reactions) *base.Reactions {
-	return &base.Reactions{
-		TotalCount: *reactions.TotalCount,
-		PlusOne:    *reactions.PlusOne,
-		MinusOne:   *reactions.MinusOne,
-		Laugh:      *reactions.Laugh,
-		Confused:   *reactions.Confused,
-		Heart:      *reactions.Heart,
-		Hooray:     *reactions.Hooray,
-	}
-}
-
 // GetIssues returns issues according start and limit
 func (g *GithubDownloaderV3) GetIssues(page, perPage int) ([]*base.Issue, bool, error) {
 	opt := &github.IssueListByRepoOptions{
@@ -366,15 +354,36 @@ func (g *GithubDownloaderV3) GetIssues(page, perPage int) ([]*base.Issue, bool,
 		for _, l := range issue.Labels {
 			labels = append(labels, convertGithubLabel(&l))
 		}
-		var reactions *base.Reactions
-		if issue.Reactions != nil {
-			reactions = convertGithubReactions(issue.Reactions)
-		}
 
 		var email string
 		if issue.User.Email != nil {
 			email = *issue.User.Email
 		}
+
+		// get reactions
+		var reactions []*base.Reaction
+		for i := 1; ; i++ {
+			g.sleep()
+			res, resp, err := g.client.Reactions.ListIssueReactions(g.ctx, g.repoOwner, g.repoName, issue.GetNumber(), &github.ListOptions{
+				Page:    i,
+				PerPage: perPage,
+			})
+			if err != nil {
+				return nil, false, err
+			}
+			g.rate = &resp.Rate
+			if len(res) == 0 {
+				break
+			}
+			for _, reaction := range res {
+				reactions = append(reactions, &base.Reaction{
+					UserID:   reaction.User.GetID(),
+					UserName: reaction.User.GetLogin(),
+					Content:  reaction.GetContent(),
+				})
+			}
+		}
+
 		allIssues = append(allIssues, &base.Issue{
 			Title:       *issue.Title,
 			Number:      int64(*issue.Number),
@@ -418,9 +427,29 @@ func (g *GithubDownloaderV3) GetComments(issueNumber int64) ([]*base.Comment, er
 			if comment.User.Email != nil {
 				email = *comment.User.Email
 			}
-			var reactions *base.Reactions
-			if comment.Reactions != nil {
-				reactions = convertGithubReactions(comment.Reactions)
+
+			// get reactions
+			var reactions []*base.Reaction
+			for i := 1; ; i++ {
+				g.sleep()
+				res, resp, err := g.client.Reactions.ListIssueCommentReactions(g.ctx, g.repoOwner, g.repoName, comment.GetID(), &github.ListOptions{
+					Page:    i,
+					PerPage: 100,
+				})
+				if err != nil {
+					return nil, err
+				}
+				g.rate = &resp.Rate
+				if len(res) == 0 {
+					break
+				}
+				for _, reaction := range res {
+					reactions = append(reactions, &base.Reaction{
+						UserID:   reaction.User.GetID(),
+						UserName: reaction.User.GetLogin(),
+						Content:  reaction.GetContent(),
+					})
+				}
 			}
 			allComments = append(allComments, &base.Comment{
 				IssueIndex:  issueNumber,
@@ -473,8 +502,6 @@ func (g *GithubDownloaderV3) GetPullRequests(page, perPage int) ([]*base.PullReq
 			labels = append(labels, convertGithubLabel(l))
 		}
 
-		// FIXME: This API missing reactions, we may need another extra request to get reactions
-
 		var email string
 		if pr.User.Email != nil {
 			email = *pr.User.Email
@@ -515,6 +542,30 @@ func (g *GithubDownloaderV3) GetPullRequests(page, perPage int) ([]*base.PullReq
 			headUserName = *pr.Head.User.Login
 		}
 
+		// get reactions
+		var reactions []*base.Reaction
+		for i := 1; ; i++ {
+			g.sleep()
+			res, resp, err := g.client.Reactions.ListIssueReactions(g.ctx, g.repoOwner, g.repoName, pr.GetNumber(), &github.ListOptions{
+				Page:    i,
+				PerPage: perPage,
+			})
+			if err != nil {
+				return nil, err
+			}
+			g.rate = &resp.Rate
+			if len(res) == 0 {
+				break
+			}
+			for _, reaction := range res {
+				reactions = append(reactions, &base.Reaction{
+					UserID:   reaction.User.GetID(),
+					UserName: reaction.User.GetLogin(),
+					Content:  reaction.GetContent(),
+				})
+			}
+		}
+
 		allPRs = append(allPRs, &base.PullRequest{
 			Title:          *pr.Title,
 			Number:         int64(*pr.Number),
@@ -545,7 +596,8 @@ func (g *GithubDownloaderV3) GetPullRequests(page, perPage int) ([]*base.PullReq
 				RepoName:  *pr.Base.Repo.Name,
 				OwnerName: *pr.Base.User.Login,
 			},
-			PatchURL: *pr.PatchURL,
+			PatchURL:  *pr.PatchURL,
+			Reactions: reactions,
 		})
 	}
 
diff --git a/modules/migrations/github_test.go b/modules/migrations/github_test.go
index bf71ab4756..10943e4019 100644
--- a/modules/migrations/github_test.go
+++ b/modules/migrations/github_test.go
@@ -170,14 +170,12 @@ func TestGitHubDownloadRepo(t *testing.T) {
 					Description: "Good for newcomers",
 				},
 			},
-			Reactions: &base.Reactions{
-				TotalCount: 1,
-				PlusOne:    1,
-				MinusOne:   0,
-				Laugh:      0,
-				Confused:   0,
-				Heart:      0,
-				Hooray:     0,
+			Reactions: []*base.Reaction{
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "+1",
+				},
 			},
 			Closed: &closed1,
 		},
@@ -198,14 +196,37 @@ func TestGitHubDownloadRepo(t *testing.T) {
 					Description: "This issue or pull request already exists",
 				},
 			},
-			Reactions: &base.Reactions{
-				TotalCount: 6,
-				PlusOne:    1,
-				MinusOne:   1,
-				Laugh:      1,
-				Confused:   1,
-				Heart:      1,
-				Hooray:     1,
+			Reactions: []*base.Reaction{
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "heart",
+				},
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "laugh",
+				},
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "-1",
+				},
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "confused",
+				},
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "hooray",
+				},
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "+1",
+				},
 			},
 			Closed: &closed2,
 		},
@@ -223,14 +244,12 @@ func TestGitHubDownloadRepo(t *testing.T) {
 			Created:    time.Date(2019, 11, 12, 21, 0, 13, 0, time.UTC),
 			Updated:    time.Date(2019, 11, 12, 21, 0, 13, 0, time.UTC),
 			Content:    "This is a comment",
-			Reactions: &base.Reactions{
-				TotalCount: 1,
-				PlusOne:    1,
-				MinusOne:   0,
-				Laugh:      0,
-				Confused:   0,
-				Heart:      0,
-				Hooray:     0,
+			Reactions: []*base.Reaction{
+				{
+					UserID:   1669571,
+					UserName: "mrsdizzie",
+					Content:  "+1",
+				},
 			},
 		},
 		{
@@ -240,15 +259,7 @@ func TestGitHubDownloadRepo(t *testing.T) {
 			Created:    time.Date(2019, 11, 12, 22, 7, 14, 0, time.UTC),
 			Updated:    time.Date(2019, 11, 12, 22, 7, 14, 0, time.UTC),
 			Content:    "A second comment",
-			Reactions: &base.Reactions{
-				TotalCount: 0,
-				PlusOne:    0,
-				MinusOne:   0,
-				Laugh:      0,
-				Confused:   0,
-				Heart:      0,
-				Hooray:     0,
-			},
+			Reactions:  nil,
 		},
 	}, comments[:2])
 
@@ -331,6 +342,18 @@ func TestGitHubDownloadRepo(t *testing.T) {
 			},
 			Merged:         false,
 			MergeCommitSHA: "565d1208f5fffdc1c5ae1a2436491eb9a5e4ebae",
+			Reactions: []*base.Reaction{
+				{
+					UserID:   81045,
+					UserName: "lunny",
+					Content:  "heart",
+				},
+				{
+					UserID:   81045,
+					UserName: "lunny",
+					Content:  "+1",
+				},
+			},
 		},
 	}, prs)
 }
diff --git a/routers/api/v1/repo/issue_reaction.go b/routers/api/v1/repo/issue_reaction.go
index b943ea6980..40632dcab7 100644
--- a/routers/api/v1/repo/issue_reaction.go
+++ b/routers/api/v1/repo/issue_reaction.go
@@ -65,7 +65,7 @@ func GetIssueCommentReactions(ctx *context.APIContext) {
 		ctx.Error(http.StatusInternalServerError, "FindIssueReactions", err)
 		return
 	}
-	_, err = reactions.LoadUsers()
+	_, err = reactions.LoadUsers(ctx.Repo.Repository)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "ReactionList.LoadUsers()", err)
 		return
@@ -271,7 +271,7 @@ func GetIssueReactions(ctx *context.APIContext) {
 		ctx.Error(http.StatusInternalServerError, "FindIssueReactions", err)
 		return
 	}
-	_, err = reactions.LoadUsers()
+	_, err = reactions.LoadUsers(ctx.Repo.Repository)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "ReactionList.LoadUsers()", err)
 		return
diff --git a/routers/repo/issue.go b/routers/repo/issue.go
index afc115c6e2..2fb42b0f22 100644
--- a/routers/repo/issue.go
+++ b/routers/repo/issue.go
@@ -1608,7 +1608,7 @@ func ChangeCommentReaction(ctx *context.Context, form auth.ReactionForm) {
 		}
 		// Reload new reactions
 		comment.Reactions = nil
-		if err = comment.LoadReactions(); err != nil {
+		if err = comment.LoadReactions(ctx.Repo.Repository); err != nil {
 			log.Info("comment.LoadReactions: %s", err)
 			break
 		}
@@ -1622,7 +1622,7 @@ func ChangeCommentReaction(ctx *context.Context, form auth.ReactionForm) {
 
 		// Reload new reactions
 		comment.Reactions = nil
-		if err = comment.LoadReactions(); err != nil {
+		if err = comment.LoadReactions(ctx.Repo.Repository); err != nil {
 			log.Info("comment.LoadReactions: %s", err)
 			break
 		}