Add APIv4 endpoint to permanently delete teams (#6604)

Tests are added, however, it only tests the property if its soft deleted. In the
background it will be hard deleted, but that is untestable through a integration
test.

api4/team.go

@@ -30,7 +30,7 @@ func InitTeam() {
 
 	BaseRoutes.Team.Handle("", ApiSessionRequired(getTeam)).Methods("GET")
 	BaseRoutes.Team.Handle("", ApiSessionRequired(updateTeam)).Methods("PUT")
-	BaseRoutes.Team.Handle("", ApiSessionRequired(softDeleteTeam)).Methods("DELETE")
+	BaseRoutes.Team.Handle("", ApiSessionRequired(deleteTeam)).Methods("DELETE")
 	BaseRoutes.Team.Handle("/patch", ApiSessionRequired(patchTeam)).Methods("PUT")
 	BaseRoutes.Team.Handle("/stats", ApiSessionRequired(getTeamStats)).Methods("GET")
 	BaseRoutes.TeamMembers.Handle("", ApiSessionRequired(getTeamMembers)).Methods("GET")
@@ -172,7 +172,7 @@ func patchTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 	w.Write([]byte(patchedTeam.ToJson()))
 }
 
-func softDeleteTeam(c *Context, w http.ResponseWriter, r *http.Request) {
+func deleteTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 	c.RequireTeamId()
 	if c.Err != nil {
 		return
@@ -183,7 +183,13 @@ func softDeleteTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	err := app.SoftDeleteTeam(c.Params.TeamId)
+	var err *model.AppError
+	if c.Params.Permanent {
+		err = app.PermanentDeleteTeamId(c.Params.TeamId)
+	} else {
+		err = app.SoftDeleteTeam(c.Params.TeamId)
+	}
+
 	if err != nil {
 		c.Err = err
 		return