From db1b2cd53f5dc7bfbfb6ee54ad0bb0882ea2cc03 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Wed, 10 Jan 2018 22:03:56 -0500
Subject: [PATCH] Renderer scaffolding

---
 cmd/aerc/main.go      | 12 +++++++----
 ui/render.go          | 45 +++++++++++++++++++++++++++++++++++++++++
 ui/types.go           | 47 +++++++++++++++++++++++++++++++++++++++++++
 worker/imap/worker.go |  2 --
 4 files changed, 100 insertions(+), 6 deletions(-)
 create mode 100644 ui/render.go
 create mode 100644 ui/types.go

diff --git a/cmd/aerc/main.go b/cmd/aerc/main.go
index 9188dce..4adf11e 100644
--- a/cmd/aerc/main.go
+++ b/cmd/aerc/main.go
@@ -1,10 +1,10 @@
 package main
 
 import (
-	"fmt"
 	"time"
 
 	"git.sr.ht/~sircmpwn/aerc2/config"
+	"git.sr.ht/~sircmpwn/aerc2/ui"
 	"git.sr.ht/~sircmpwn/aerc2/worker"
 	"git.sr.ht/~sircmpwn/aerc2/worker/types"
 )
@@ -20,19 +20,23 @@ func main() {
 		if err != nil {
 			panic(err)
 		}
-		fmt.Printf("Initializing worker %s\n", account.Name)
 		go work.Run()
 		work.PostAction(types.Configure{Config: account})
 		workers = append(workers, work)
 	}
-	for {
+	_ui, err := ui.Initialize(conf)
+	if err != nil {
+		panic(err)
+	}
+	defer _ui.Close()
+	for !_ui.Exit {
 		activity := false
 		for _, worker := range workers {
 			if msg := worker.GetMessage(); msg != nil {
 				activity = true
-				fmt.Printf("<- %T\n", msg)
 			}
 		}
+		activity = _ui.Tick() || activity
 		if !activity {
 			time.Sleep(100 * time.Millisecond)
 		}
diff --git a/ui/render.go b/ui/render.go
new file mode 100644
index 0000000..bca0cf6
--- /dev/null
+++ b/ui/render.go
@@ -0,0 +1,45 @@
+package ui
+
+import (
+	tb "github.com/nsf/termbox-go"
+
+	"git.sr.ht/~sircmpwn/aerc2/config"
+)
+
+func Initialize(conf *config.AercConfig) (*UIState, error) {
+	state := UIState{
+		InvalidPanes: InvalidateAll,
+		Tabs:         make([]AercTab, len(conf.Accounts)),
+	}
+	// TODO: Initialize each tab to a mailbox tab
+	if err := tb.Init(); err != nil {
+		return nil, err
+	}
+	tb.SetInputMode(tb.InputEsc | tb.InputMouse)
+	tb.SetOutputMode(tb.Output256)
+	return &state, nil
+}
+
+func (state *UIState) Close() {
+	tb.Close()
+}
+
+func (state *UIState) Invalidate(what uint) {
+	state.InvalidPanes |= what
+}
+
+func (state *UIState) Tick() bool {
+	switch e := tb.PollEvent(); e.Type {
+	case tb.EventKey:
+		if e.Key == tb.KeyEsc {
+			state.Exit = true
+		}
+	case tb.EventResize:
+		state.Invalidate(InvalidateAll)
+	}
+	if state.InvalidPanes != 0 {
+		// TODO: re-render
+		state.InvalidPanes = 0
+	}
+	return true
+}
diff --git a/ui/types.go b/ui/types.go
new file mode 100644
index 0000000..a7918b5
--- /dev/null
+++ b/ui/types.go
@@ -0,0 +1,47 @@
+package ui
+
+const (
+	Valid          = 0
+	InvalidateTabs = 1 << iota
+	InvalidateSidebar
+	InvalidateStatusBar
+)
+
+const (
+	InvalidateAll = InvalidateTabs | InvalidateSidebar | InvalidateStatusBar
+)
+
+type Geometry struct {
+	row    int
+	col    int
+	width  int
+	height int
+}
+
+type AercTab interface {
+	Name() string
+	Invalid() bool
+	Render(at Geometry)
+}
+
+type UIState struct {
+	Exit         bool
+	InvalidPanes uint
+
+	Panes struct {
+		TabList   Geometry
+		TabView   Geometry
+		Sidebar   Geometry
+		StatusBar Geometry
+	}
+
+	Tabs        []AercTab
+	SelectedTab int
+
+	Prompt struct {
+		Prompt *string
+		Text   *string
+		Index  int
+		Scroll int
+	}
+}
diff --git a/worker/imap/worker.go b/worker/imap/worker.go
index 6ffdf3a..14e4004 100644
--- a/worker/imap/worker.go
+++ b/worker/imap/worker.go
@@ -1,7 +1,6 @@
 package imap
 
 import (
-	"fmt"
 	"time"
 
 	"git.sr.ht/~sircmpwn/aerc2/worker/types"
@@ -50,7 +49,6 @@ func (w *IMAPWorker) Run() {
 	for {
 		select {
 		case msg := <-w.actions:
-			fmt.Printf("<= %T\n", msg)
 			w.handleMessage(msg)
 		default:
 			time.Sleep(100 * time.Millisecond)