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main.go
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main.go
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package main
import (
"bytes"
"embed"
"errors"
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"path"
"sort"
"strings"
"text/template"
"github.com/dvcrn/unisync/internal"
"golang.org/x/exp/maps"
"gopkg.in/yaml.v3"
)
//go:embed apps/*
var content embed.FS
//go:embed agent.plist
var agentPlist string
type actionType string
const (
actionTypeUnknown actionType = ""
actionTypeSync actionType = "sync"
actionTypeInitFromTarget actionType = "initFromTarget"
actionTypeInitFromLocal actionType = "initFromLocal"
actionTypeList actionType = "list"
actionTypeInfo actionType = "info"
actionTypeInstallAgent actionType = "installAgent"
actionTypeRemoveAgent actionType = "removeAgent"
)
var action actionType = actionTypeUnknown
func init() {
flag.Parse()
flag.Usage = func() {
fmt.Fprintf(flag.CommandLine.Output(), "Usage of %s:\n", os.Args[0])
fmt.Println("Flags:")
flag.PrintDefaults()
fmt.Println("")
fmt.Println("Commands:")
fmt.Println(" sync - run sync between all enabled apps")
fmt.Println(" init-from-target - run/force initial sync, targetPath -> appPath")
fmt.Println(" init-from-local - run/force initial sync, local -> targetPath")
fmt.Println(" list - list available apps")
fmt.Println(" info <appname> - show details of an app")
fmt.Println("")
fmt.Println("LaunchAgent management")
fmt.Println(" install-agent - installs LaunchAgent to automatically run in the background")
fmt.Println(" remove-agent - unload and remove agent")
}
if len(flag.Args()) < 1 {
log.Println("no argument given. currently supported: sync")
flag.Usage()
os.Exit(1)
}
switch strings.ToLower(flag.Arg(0)) {
case "sync":
action = actionTypeSync
case "init-from-target":
action = actionTypeInitFromTarget
case "init-from-local":
action = actionTypeInitFromLocal
case "list":
action = actionTypeList
case "info":
action = actionTypeInfo
case "install-agent":
action = actionTypeInstallAgent
case "remove-agent":
action = actionTypeRemoveAgent
}
}
func readAppConfigs(basePath string) (map[string]*internal.AppConfig, error) {
configurations := map[string]*internal.AppConfig{}
entries, err := content.ReadDir(basePath)
if err != nil {
return nil, err
}
for _, entry := range entries {
if entry.IsDir() {
continue
}
c, err := content.ReadFile(fmt.Sprintf("%s/%s", basePath, entry.Name()))
if err != nil {
return nil, err
}
var t *internal.AppConfig
err = yaml.Unmarshal(c, &t)
if err != nil {
return nil, err
}
configurations[t.FriendlyName] = t
}
return configurations, nil
}
func loadApps() (map[string]*internal.AppConfig, error) {
configurations := map[string]*internal.AppConfig{}
configEntries, err := readAppConfigs("apps/mackup")
if err != nil {
return nil, err
}
for k, v := range configEntries {
configurations[k] = v
}
// apps overwrite mackup, so mackup gets parsed first
configEntries, err = readAppConfigs("apps")
if err != nil {
return nil, err
}
for k, v := range configEntries {
configurations[k] = v
}
return configurations, nil
}
func main() {
switch action {
case actionTypeRemoveAgent:
fmt.Println("removing LaunchAgent...")
homeDir, err := os.UserHomeDir()
if err != nil {
log.Fatal(err)
}
launchAgentsPath := path.Join(homeDir, "Library", "LaunchAgents")
targetPath := path.Join(launchAgentsPath, "sh.d.unisync.plist")
if _, err := os.Stat(targetPath); errors.Is(err, os.ErrNotExist) {
fmt.Println("no LaunchAgent found at ", targetPath)
return
}
// unload and delete
cmd := exec.Command("launchctl", "unload", targetPath)
output, err := cmd.CombinedOutput()
if err != nil {
fmt.Println("error unloading LaunchAgent:")
fmt.Println(string(output))
return
}
if err := os.Remove(targetPath); err != nil {
fmt.Println(err.Error())
return
}
case actionTypeInstallAgent:
fmt.Println("installing LaunchAgent...")
// store path to executable to insert into the LaunchAgent
unisyncExecutable, err := os.Executable()
if err != nil {
log.Fatal(err)
}
homeDir, err := os.UserHomeDir()
if err != nil {
log.Fatal(err)
}
launchAgentsPath := path.Join(homeDir, "Library", "LaunchAgents")
tpl, err := template.New("agentplist").Parse(agentPlist)
if err != nil {
fmt.Println(err.Error())
return
}
// 'freeze' current users path into the launchagent config so it can resolve
// things like where the unison binary is
osPath := os.Getenv("PATH")
out := bytes.Buffer{}
err = tpl.Execute(&out, map[string]string{
"PATH": osPath,
"EXECUTABLE": unisyncExecutable,
})
if err != nil {
fmt.Println(err.Error())
return
}
// write LaunchAgent and load it
targetPath := path.Join(launchAgentsPath, "sh.d.unisync.plist")
if err := ioutil.WriteFile(targetPath, out.Bytes(), 0644); err != nil {
fmt.Println(err.Error())
return
}
fmt.Println("Successfully installed LaunchAgent to: ", targetPath)
cmd := exec.Command("launchctl", "load", targetPath)
output, err := cmd.CombinedOutput()
if err != nil {
fmt.Println("error loading LaunchAgent:")
fmt.Println(string(output))
return
}
case actionTypeList:
configurations, err := loadApps()
if err != nil {
log.Fatal(err)
}
keys := maps.Keys(configurations)
sort.Strings(keys)
fmt.Println("Available apps:")
for _, k := range keys {
fmt.Printf(" - %s (%s)\n", configurations[k].Name, configurations[k].FriendlyName)
}
case actionTypeInfo:
configurations, err := loadApps()
if err != nil {
log.Fatal(err)
}
if len(flag.Args()) != 2 {
fmt.Println("no argument given")
return
}
for k, v := range configurations {
if k == flag.Args()[1] {
fmt.Printf("%s (%s)\n", v.Name, v.FriendlyName)
fmt.Println("----")
out, err := yaml.Marshal(v)
if err != nil {
fmt.Println(err.Error())
return
}
fmt.Println(string(out))
}
}
case actionTypeSync,
actionTypeInitFromLocal,
actionTypeInitFromTarget:
configurations, err := loadApps()
if err != nil {
log.Fatal(err)
}
homeDir, err := os.UserHomeDir()
if err != nil {
log.Fatal(err)
}
configFile, err := os.ReadFile(homeDir + "/.config/unisync/unisync.yaml")
if err != nil {
configFile, err = os.ReadFile(homeDir + "/.config/unisync/unisync.yml")
if err != nil {
log.Fatal(err)
}
}
var config *internal.Config
err = yaml.Unmarshal(configFile, &config)
if err != nil {
log.Fatalf("err trying to parse yaml config file: %s\n", err)
}
preferDirection := internal.PreferMode(config.PreferDirection)
if config.PreferDirection != internal.PreferModeLocal && config.PreferDirection != internal.PreferModeTarget {
fmt.Println("preferDirection not set or invalid, defaulting to 'preferDirection = target'")
preferDirection = internal.PreferModeTarget
}
fmt.Println("starting unisync...")
fmt.Printf("targetPath: %s, apps: %s\n", config.TargetPath, config.Apps)
syncer := internal.NewSyncer(config.TargetPath, preferDirection)
for _, app := range config.Apps {
fmt.Printf("--- syncing app: %s ---\n", app)
found, exists := configurations[app]
if !exists {
fmt.Printf("config for app '%s' does not exist, skipping\n", app)
continue
}
switch action {
case actionTypeSync:
if err := syncer.SyncApp(found); err != nil {
fmt.Printf("err syncing app: %s\n", err)
}
case actionTypeInitFromLocal:
if err := syncer.SyncAppBToA(found); err != nil {
fmt.Printf("err syncing app: %s\n", err)
}
case actionTypeInitFromTarget:
if err := syncer.SyncAppAToB(found); err != nil {
fmt.Printf("err syncing app: %s\n", err)
}
}
}
default:
fmt.Println("action not found")
flag.Usage()
os.Exit(1)
}
}