Add dashboard milestone search and repo milestone search by name (#14866)

Feature for issue #13845:
 - Add milestones search by name on dashboard milestones page.
 - Add milestones search by name on repo issue/milestones page.

models/issue_milestone.go

@@ -426,9 +426,12 @@ func GetMilestones(opts GetMilestonesOption) (MilestoneList, error) {
 }
 
 // SearchMilestones search milestones
-func SearchMilestones(repoCond builder.Cond, page int, isClosed bool, sortType string) (MilestoneList, error) {
+func SearchMilestones(repoCond builder.Cond, page int, isClosed bool, sortType string, keyword string) (MilestoneList, error) {
 	miles := make([]*Milestone, 0, setting.UI.IssuePagingNum)
 	sess := x.Where("is_closed = ?", isClosed)
+	if len(keyword) > 0 {
+		sess = sess.And(builder.Like{"UPPER(name)", strings.ToUpper(keyword)})
+	}
 	if repoCond.IsValid() {
 		sess.In("repo_id", builder.Select("id").From("repository").Where(repoCond))
 	}
@@ -460,6 +463,7 @@ func GetMilestonesByRepoIDs(repoIDs []int64, page int, isClosed bool, sortType s
 		page,
 		isClosed,
 		sortType,
+		"",
 	)
 }
 
@@ -506,6 +510,38 @@ func GetMilestonesStatsByRepoCond(repoCond builder.Cond) (*MilestonesStats, erro
 	return stats, nil
 }
 
+// GetMilestonesStatsByRepoCondAndKw returns milestone statistic information for dashboard by given repo conditions and name keyword.
+func GetMilestonesStatsByRepoCondAndKw(repoCond builder.Cond, keyword string) (*MilestonesStats, error) {
+	var err error
+	stats := &MilestonesStats{}
+
+	sess := x.Where("is_closed = ?", false)
+	if len(keyword) > 0 {
+		sess = sess.And(builder.Like{"UPPER(name)", strings.ToUpper(keyword)})
+	}
+	if repoCond.IsValid() {
+		sess.And(builder.In("repo_id", builder.Select("id").From("repository").Where(repoCond)))
+	}
+	stats.OpenCount, err = sess.Count(new(Milestone))
+	if err != nil {
+		return nil, err
+	}
+
+	sess = x.Where("is_closed = ?", true)
+	if len(keyword) > 0 {
+		sess = sess.And(builder.Like{"UPPER(name)", strings.ToUpper(keyword)})
+	}
+	if repoCond.IsValid() {
+		sess.And(builder.In("repo_id", builder.Select("id").From("repository").Where(repoCond)))
+	}
+	stats.ClosedCount, err = sess.Count(new(Milestone))
+	if err != nil {
+		return nil, err
+	}
+
+	return stats, nil
+}
+
 func countRepoMilestones(e Engine, repoID int64) (int64, error) {
 	return e.
 		Where("repo_id=?", repoID).
@@ -548,6 +584,34 @@ func CountMilestonesByRepoCond(repoCond builder.Cond, isClosed bool) (map[int64]
 	return countMap, nil
 }
 
+// CountMilestonesByRepoCondAndKw map from repo conditions and the keyword of milestones' name to number of milestones matching the options`
+func CountMilestonesByRepoCondAndKw(repoCond builder.Cond, keyword string, isClosed bool) (map[int64]int64, error) {
+	sess := x.Where("is_closed = ?", isClosed)
+	if len(keyword) > 0 {
+		sess = sess.And(builder.Like{"UPPER(name)", strings.ToUpper(keyword)})
+	}
+	if repoCond.IsValid() {
+		sess.In("repo_id", builder.Select("id").From("repository").Where(repoCond))
+	}
+
+	countsSlice := make([]*struct {
+		RepoID int64
+		Count  int64
+	}, 0, 10)
+	if err := sess.GroupBy("repo_id").
+		Select("repo_id AS repo_id, COUNT(*) AS count").
+		Table("milestone").
+		Find(&countsSlice); err != nil {
+		return nil, err
+	}
+
+	countMap := make(map[int64]int64, len(countsSlice))
+	for _, c := range countsSlice {
+		countMap[c.RepoID] = c.Count
+	}
+	return countMap, nil
+}
+
 func updateRepoMilestoneNum(e Engine, repoID int64) error {
 	_, err := e.Exec("UPDATE `repository` SET num_milestones=(SELECT count(*) FROM milestone WHERE repo_id=?),num_closed_milestones=(SELECT count(*) FROM milestone WHERE repo_id=? AND is_closed=?) WHERE id=?",
 		repoID,