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// 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 main
import (
"fmt"
"os"
"path/filepath"
"time"
"maunium.net/go/gomuks/config"
"maunium.net/go/gomuks/interface"
"maunium.net/go/gomuks/matrix"
"maunium.net/go/gomuks/ui"
"maunium.net/go/gomuks/ui/debug"
"maunium.net/go/tview"
)
// Gomuks is the wrapper for everything.
type Gomuks struct {
app *tview.Application
ui *ui.GomuksUI
matrix *matrix.Container
debug *debug.Pane
debugMode bool
config *config.Config
stop chan bool
}
// NewGomuks creates a new Gomuks instance with everything initialized,
// but does not start it.
func NewGomuks(enableDebug, forceExternalDebug bool) *Gomuks {
configDir := filepath.Join(os.Getenv("HOME"), ".config/gomuks")
gmx := &Gomuks{
app: tview.NewApplication(),
stop: make(chan bool, 1),
}
gmx.debug = debug.NewPane()
gmx.debug.SetChangedFunc(func() {
gmx.ui.Render()
})
debug.Default = gmx.debug
gmx.config = config.NewConfig(configDir)
gmx.ui = ui.NewGomuksUI(gmx)
gmx.matrix = matrix.NewContainer(gmx)
gmx.config.Load()
if len(gmx.config.UserID) > 0 {
gmx.config.LoadSession(gmx.config.UserID)
}
gmx.matrix.InitClient()
main := gmx.ui.InitViews()
if enableDebug {
debug.EnableExternal()
if forceExternalDebug {
debug.RedirectAllExt = true
} else {
main = gmx.debug.Wrap(main, debug.Right)
}
gmx.debugMode = true
}
gmx.app.SetRoot(main, true)
return gmx
}
// Save saves the active session and message history.
func (gmx *Gomuks) Save() {
if gmx.config.Session != nil {
gmx.debug.Print("Saving session...")
gmx.config.Session.Save()
}
gmx.debug.Print("Saving history...")
gmx.ui.MainView().SaveAllHistory()
}
// StartAutosave calls Save() every minute until it receives a stop signal
// on the Gomuks.stop channel.
func (gmx *Gomuks) StartAutosave() {
defer gmx.Recover()
ticker := time.NewTicker(time.Minute)
for {
select {
case <-ticker.C:
gmx.Save()
case val := <-gmx.stop:
if val {
return
}
}
}
}
// Stop stops the Matrix syncer, the tview app and the autosave goroutine,
// then saves everything and calls os.Exit(0).
func (gmx *Gomuks) Stop() {
gmx.debug.Print("Disconnecting from Matrix...")
gmx.matrix.Stop()
gmx.debug.Print("Cleaning up UI...")
gmx.app.Stop()
gmx.stop <- true
gmx.Save()
os.Exit(0)
}
// Recover recovers a panic, closes the tcell screen and either re-panics or
// shows an user-friendly message about the panic depending on whether or not
// the debug mode is enabled.
func (gmx *Gomuks) Recover() {
if p := recover(); p != nil {
if gmx.App().GetScreen() != nil {
gmx.App().GetScreen().Fini()
}
if gmx.debugMode {
panic(p)
} else {
debug.PrettyPanic()
}
}
}
// Start opens a goroutine for the autosave loop and starts the tview app.
//
// If the tview app returns an error, it will be passed into panic(), which
// will be recovered as specified in Recover().
func (gmx *Gomuks) Start() {
defer gmx.Recover()
go gmx.StartAutosave()
if err := gmx.app.Run(); err != nil {
panic(err)
}
}
// Matrix returns the MatrixContainer instance.
func (gmx *Gomuks) Matrix() ifc.MatrixContainer {
return gmx.matrix
}
// App returns the tview Application instance.
func (gmx *Gomuks) App() *tview.Application {
return gmx.app
}
// Config returns the Gomuks config instance.
func (gmx *Gomuks) Config() *config.Config {
return gmx.config
}
// UI returns the Gomuks UI instance.
func (gmx *Gomuks) UI() ifc.GomuksUI {
return gmx.ui
}
func main() {
debugVar := os.Getenv("DEBUG")
NewGomuks(len(debugVar) > 0, debugVar == "ext").Start()
// We use os.Exit() everywhere, so exiting by returning from Start() shouldn't happen.
time.Sleep(5 * time.Second)
fmt.Println("Unexpected exit by return from Gomuks#Start().")
os.Exit(2)
}
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