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package main
import (
"flag"
"fmt"
"io/ioutil"
"math/rand"
"os"
"os/signal"
"path"
"strings"
"syscall"
"time"
"git.sr.ht/~taiite/senpai"
"github.com/gdamore/tcell/v2"
)
func main() {
tcell.SetEncodingFallback(tcell.EncodingFallbackASCII)
var configPath string
var debug bool
flag.StringVar(&configPath, "config", "", "path to the configuration file")
flag.BoolVar(&debug, "debug", false, "show raw protocol data in the home buffer")
flag.Parse()
rand.Seed(time.Now().UnixNano())
if configPath == "" {
configDir, err := os.UserConfigDir()
if err != nil {
panic(err)
}
configPath = path.Join(configDir, "senpai", "senpai.scfg")
}
cfg, err := senpai.LoadConfigFile(configPath)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to load the required configuration file at %q: %s\n", configPath, err)
os.Exit(1)
}
cfg.Debug = cfg.Debug || debug
app, err := senpai.NewApp(cfg)
if err != nil {
panic(err)
}
lastNetID, lastBuffer := getLastBuffer()
app.SwitchToBuffer(lastNetID, lastBuffer)
app.SetLastClose(getLastStamp())
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
go func() {
<-sigCh
app.Close()
}()
app.Run()
app.Close()
writeLastBuffer(app)
writeLastStamp(app)
}
func cachePath() string {
cacheDir, err := os.UserCacheDir()
if err != nil {
panic(err)
}
cache := path.Join(cacheDir, "senpai")
err = os.MkdirAll(cache, 0755)
if err != nil {
panic(err)
}
return cache
}
func lastBufferPath() string {
return path.Join(cachePath(), "lastbuffer.txt")
}
func getLastBuffer() (netID, buffer string) {
buf, err := ioutil.ReadFile(lastBufferPath())
if err != nil {
return "", ""
}
fields := strings.SplitN(strings.TrimSpace(string(buf)), " ", 2)
if len(fields) < 2 {
return "", ""
}
return fields[0], fields[1]
}
func writeLastBuffer(app *senpai.App) {
lastBufferPath := lastBufferPath()
lastNetID, lastBuffer := app.CurrentBuffer()
err := os.WriteFile(lastBufferPath, []byte(fmt.Sprintf("%s %s", lastNetID, lastBuffer)), 0666)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to write last buffer at %q: %s\n", lastBufferPath, err)
}
}
func lastStampPath() string {
return path.Join(cachePath(), "laststamp.txt")
}
func getLastStamp() time.Time {
buf, err := ioutil.ReadFile(lastStampPath())
if err != nil {
return time.Time{}
}
stamp := strings.TrimSpace(string(buf))
t, err := time.Parse(time.RFC3339Nano, stamp)
if err != nil {
return time.Time{}
}
return t
}
func writeLastStamp(app *senpai.App) {
lastStampPath := lastStampPath()
last := app.LastMessageTime()
if last.IsZero() {
return
}
err := os.WriteFile(lastStampPath, []byte(last.UTC().Format(time.RFC3339Nano)), 0666)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to write last stamp at %q: %s\n", lastStampPath, err)
}
}
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