From 9308f4cb47fa7ce2392185ca904ff7b1d11fe1bc Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Mon, 23 Apr 2018 12:55:38 +0300
Subject: Show errors in login view. Fixes #14

---
 ui/view-login.go            | 29 ++++++++++++++++++++++++++---
 ui/widget/form-text-view.go | 44 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 3 deletions(-)
 create mode 100644 ui/widget/form-text-view.go

diff --git a/ui/view-login.go b/ui/view-login.go
index 46e1903..a900870 100644
--- a/ui/view-login.go
+++ b/ui/view-login.go
@@ -17,6 +17,7 @@
 package ui
 
 import (
+	"maunium.net/go/gomatrix"
 	"maunium.net/go/gomuks/config"
 	"maunium.net/go/gomuks/debug"
 	"maunium.net/go/gomuks/interface"
@@ -30,6 +31,7 @@ type LoginView struct {
 	homeserver *widget.AdvancedInputField
 	username   *widget.AdvancedInputField
 	password   *widget.AdvancedInputField
+	error      *widget.FormTextView
 
 	matrix ifc.MatrixContainer
 	config *config.Config
@@ -65,7 +67,15 @@ func (ui *GomuksUI) NewLoginView() tview.Primitive {
 
 	ui.loginView = view
 
-	return widget.Center(45, 11, ui.loginView)
+	return widget.Center(45, 13, ui.loginView)
+}
+
+func (view *LoginView) Error(err string) {
+	if view.error == nil {
+		view.error = &widget.FormTextView{TextView: tview.NewTextView()}
+		view.AddFormItem(view.error)
+	}
+	view.error.SetText(err)
 }
 
 func (view *LoginView) Login() {
@@ -75,6 +85,19 @@ func (view *LoginView) Login() {
 
 	debug.Printf("Logging into %s as %s...", hs, mxid)
 	view.config.HS = hs
-	debug.Print("Connect result:", view.matrix.InitClient())
-	debug.Print("Login result:", view.matrix.Login(mxid, password))
+	err := view.matrix.InitClient()
+	debug.Print("Init error:", err)
+	err = view.matrix.Login(mxid, password)
+	if err != nil {
+		if httpErr, ok := err.(gomatrix.HTTPError); ok {
+			if respErr, ok := httpErr.WrappedError.(gomatrix.RespError); ok {
+				view.Error(respErr.Err)
+			} else {
+				view.Error(httpErr.Message)
+			}
+		} else {
+			view.Error("Failed to connect to server.")
+		}
+		debug.Print("Login error:", err)
+	}
 }
diff --git a/ui/widget/form-text-view.go b/ui/widget/form-text-view.go
new file mode 100644
index 0000000..5645a35
--- /dev/null
+++ b/ui/widget/form-text-view.go
@@ -0,0 +1,44 @@
+// gomuks - A terminal Matrix client written in Go.
+// Copyright (C) 2018 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package widget
+
+import (
+	"maunium.net/go/tcell"
+	"maunium.net/go/tview"
+)
+
+type FormTextView struct {
+	*tview.TextView
+}
+
+func (ftv *FormTextView) GetLabel() string {
+	return ""
+}
+
+func (ftv *FormTextView) SetFormAttributes(label string, labelColor, bgColor, fieldTextColor, fieldBgColor tcell.Color) tview.FormItem {
+	return ftv
+}
+
+func (ftv *FormTextView) GetFieldWidth() int {
+	_, _, w, _ := ftv.TextView.GetRect()
+	return w
+}
+
+func (ftv *FormTextView) SetFinishedFunc(handler func(key tcell.Key)) tview.FormItem {
+	ftv.SetDoneFunc(handler)
+	return ftv
+}
-- 
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