add CAS

main.go

@@ -74,8 +74,9 @@ func validate_cas(cas_ticket string) (string, error) {
 
 func getCas(w http.ResponseWriter, r *http.Request){
 
-	fail := func() {
-		writeHTML(w, pages.LoginPage("Username or Password is incorrect."))
+	fail := func(err_message string) {
+		content := fmt.Sprintf(pages.ErrorPage, err_message)
+		writeHTML(w, content)
 	}
 
 	cas_ticket := r.URL.Query().Get("ticket")
@@ -84,54 +85,57 @@ func getCas(w http.ResponseWriter, r *http.Request){
 		username = strings.ToLower(username)
 		if e != nil {
 
-			err_message := fmt.Sprintf("VALIDATION ERROR: %s\n", e)
-			w.Write([]byte(err_message))
+			content := fmt.Sprintf("CAS validation error: %s", e)
+			fail(content)
 			return
 
 		} else if username == "" {
 
-			w.Write([]byte("CAS ERROR: user not found"))
+			fail("CAS ERROR - user not found")
 			return
 
 		} else {
 
 			db, err := dbi.GetDbConn()
 			if err != nil {
-				fail()
+				fail("Database error")
 				return
 			}
 			defer db.Close()
 
 			conn, err := db.Conn(context.Background())
 			if err != nil {
-				fail()
+				fail("Database error")
 				return
 			}
 			defer conn.Close()
 
 			user, e := dbi.GetUser(conn, username)
 			if e != nil {
-				login_error_message := fmt.Sprintf("User error for user %s: %s", e, username)
-				w.Write([]byte(login_error_message))
+				login_error_message := fmt.Sprintf("User error for user %s: %s", username, e)
+				fail(login_error_message)
 				return
 			}
 
-			token, err := dbi.GenJWT(user)
-			if err != nil {
-				fail()
+			token, e := dbi.GenJWT(user)
+			if e != nil {
+				jwt_error_message := fmt.Sprintf("Login token failure for user %s: %s", username, e)
+				fail(jwt_error_message)
 				return
 			}
 
 			if user.Status == "admin" {
 
-				items, err := dbi.GetReportedItems(conn)
-				if err != nil {
-					fail()
+				items, e := dbi.GetReportedItems(conn)
+				if e != nil {
+					items_error_message := fmt.Sprintf("Error fetching items: %s", e)
+					fail(items_error_message)
 					return
 				}
-				html, err := pages.DashboardPage(token, items)
-				if err != nil {
-					fail()
+				html, e := pages.DashboardPage(token, items)
+				if e != nil {
+					content := fmt.Sprintf("Error loading dashboard: %s", e)
+					fail(content)
 					return
 				}
 				writeHTML(w, html)
@@ -144,7 +148,7 @@ func getCas(w http.ResponseWriter, r *http.Request){
 
 			} else {
 
-				w.Write([]byte("User has invalid status"))
+				fail("User has invalid status")
 				return
 
 			}
@@ -249,7 +253,7 @@ func getPortal(w http.ResponseWriter, r *http.Request) {
 
 func main() {
 	mux := http.NewServeMux()
-	mux.HandleFunc("GET /faculty/activity/cas", handleCas)
+	mux.HandleFunc("GET /faculty/activity/cas", getCas)
 	mux.HandleFunc("GET /faculty/activity/portal", getPortal)
 	mux.HandleFunc("GET /faculty/activity/login", handleLoginGet)
 	mux.HandleFunc("POST /faculty/activity/login", handleLoginPost)