[MM-12367] Added CLI command 'team search' (#9512)

* Added 'search' sub-command for the command 'team' to search across teams with name

* Addressed code review

* Moved 'removeDuplicatesAndSortTeams' function to team.go

Addressed more code reviews

* Added unit test case for team search command

* Added unit test case to test searching of teams by display name

2 files changed, 87 insertions, 0 deletions

diff --git a/cmd/mattermost/commands/team.go b/cmd/mattermost/commands/team.go
index 59570d5e7..587062534 100644
--- a/cmd/mattermost/commands/team.go
+++ b/cmd/mattermost/commands/team.go
@@ -6,6 +6,7 @@ package commands
 import (
 	"errors"
 	"fmt"
+	"sort"
 
 	"github.com/mattermost/mattermost-server/app"
 	"github.com/mattermost/mattermost-server/model"
@@ -59,6 +60,15 @@ var ListTeamsCmd = &cobra.Command{
 	RunE:    listTeamsCmdF,
 }
 
+var SearchTeamCmd = &cobra.Command{
+	Use:     "search [teams]",
+	Short:   "Search for teams",
+	Long:    "Search for teams based on name",
+	Example: "  team search team1",
+	Args:    cobra.MinimumNArgs(1),
+	RunE:    searchTeamCmdF,
+}
+
 func init() {
 	TeamCreateCmd.Flags().String("name", "", "Team Name")
 	TeamCreateCmd.Flags().String("display_name", "", "Team Display Name")
@@ -73,6 +83,7 @@ func init() {
 		AddUsersCmd,
 		DeleteTeamsCmd,
 		ListTeamsCmd,
+		SearchTeamCmd,
 	)
 	RootCmd.AddCommand(TeamCmd)
 }
@@ -247,3 +258,45 @@ func listTeamsCmdF(command *cobra.Command, args []string) error {
 
 	return nil
 }
+
+func searchTeamCmdF(command *cobra.Command, args []string) error {
+	a, err := InitDBCommandContextCobra(command)
+	if err != nil {
+		return err
+	}
+	defer a.Shutdown()
+
+	var teams []*model.Team
+
+	for _, searchTerm := range args {
+		foundTeams, err := a.SearchAllTeams(searchTerm)
+		if err != nil {
+			return err
+		}
+		teams = append(teams, foundTeams...)
+	}
+
+	sortedTeams := removeDuplicatesAndSortTeams(teams)
+
+	for _, team := range sortedTeams {
+		CommandPrettyPrintln(team.Name + ": " + team.DisplayName + " (" + team.Id + ")")
+	}
+
+	return nil
+}
+
+// Removes duplicates and sorts teams by name
+func removeDuplicatesAndSortTeams(teams []*model.Team) []*model.Team {
+	keys := make(map[string]bool)
+	result := []*model.Team{}
+	for _, team := range teams {
+		if _, value := keys[team.Name]; !value {
+			keys[team.Name] = true
+			result = append(result, team)
+		}
+	}
+	sort.Slice(result, func(i, j int) bool {
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
diff --git a/cmd/mattermost/commands/team_test.go b/cmd/mattermost/commands/team_test.go
index 20e04bdc9..559198256 100644
--- a/cmd/mattermost/commands/team_test.go
+++ b/cmd/mattermost/commands/team_test.go
@@ -95,3 +95,37 @@ func TestListTeams(t *testing.T) {
 		t.Fatal("should have the created team")
 	}
 }
+
+func TestSearchTeamsByName(t *testing.T) {
+	th := api4.Setup().InitBasic()
+	defer th.TearDown()
+
+	id := model.NewId()
+	name := "name" + id
+	displayName := "Name " + id
+
+	CheckCommand(t, "team", "create", "--name", name, "--display_name", displayName)
+
+	output := CheckCommand(t, "team", "search", name)
+
+	if !strings.Contains(string(output), name) {
+		t.Fatal("should have the created team")
+	}
+}
+
+func TestSearchTeamsByDisplayName(t *testing.T) {
+	th := api4.Setup().InitBasic()
+	defer th.TearDown()
+
+	id := model.NewId()
+	name := "name" + id
+	displayName := "Name " + id
+
+	CheckCommand(t, "team", "create", "--name", name, "--display_name", displayName)
+
+	output := CheckCommand(t, "team", "search", displayName)
+
+	if !strings.Contains(string(output), name) {
+		t.Fatal("should have the created team")
+	}
+}