Add release auto-update launcher

.gitea/workflows/build-windows-exe.yml

@@ -0,0 +1,79 @@
+name: build-windows-exe
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        shell: bash
+        run: |
+          git clone --depth 1 --branch "${GITHUB_REF_NAME}" https://git.vrcworldtour.com/every_holiday/VRCWT-OSC.git .
+
+      - name: Install Go
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y golang-go
+          go version
+
+      - name: Test
+        shell: bash
+        run: |
+          cd VRWT_Tool/VRC_OSC
+          GO111MODULE=on go test ./...
+
+      - name: Build executables
+        shell: bash
+        run: |
+          cd VRWT_Tool/VRC_OSC
+          mkdir -p dist
+          VERSION="${GITHUB_REF_NAME}"
+          BUILD_TIME="$(date -u +%Y-%m-%dT%H:%M:%SZ)"
+          GO111MODULE=on GOOS=windows GOARCH=amd64 CGO_ENABLED=0 go build -ldflags "-X vrc_osc_go/internal/buildinfo.Version=${VERSION} -X vrc_osc_go/internal/buildinfo.BuildTime=${BUILD_TIME}" -o dist/vrc_osc.exe ./cmd/vrc_osc
+          GO111MODULE=on GOOS=windows GOARCH=amd64 CGO_ENABLED=0 go build -ldflags "-X vrc_osc_go/internal/buildinfo.Version=${VERSION} -X vrc_osc_go/internal/buildinfo.BuildTime=${BUILD_TIME}" -o dist/vrc_osc_launcher.exe ./cmd/vrc_osc_launcher
+          GO111MODULE=on GOOS=windows GOARCH=amd64 CGO_ENABLED=0 go build -ldflags "-X vrc_osc_go/internal/buildinfo.Version=${VERSION} -X vrc_osc_go/internal/buildinfo.BuildTime=${BUILD_TIME}" -o dist/vrwt_tool.exe ./cmd/vrwt_tool
+
+      - name: Package executables
+        shell: bash
+        run: |
+          cd VRWT_Tool/VRC_OSC
+          cp config/config.example.toml dist/config.example.toml
+          cp config/secrets.example.toml dist/secrets.example.toml
+          cp config/guests.example.txt dist/guests.example.txt
+          (cd dist && zip -r vrc_osc-windows.zip vrc_osc.exe vrc_osc_launcher.exe vrwt_tool.exe config.example.toml secrets.example.toml guests.example.txt)
+
+      - name: Create Release
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+          GITEA_BASE_URL: ${{ secrets.GITEA_BASE_URL }}
+          TAG_NAME: ${{ github.ref_name }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          api="${GITEA_BASE_URL:-https://git.vrcworldtour.com}/api/v1"
+          owner_repo="every_holiday/VRCWT-OSC"
+          release_json=$(curl -fsSL \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/json" \
+            "${api}/repos/${owner_repo}/releases/tags/${TAG_NAME}" || true)
+          if [ -n "${release_json}" ]; then
+            release_id=$(printf '%s' "${release_json}" | python3 -c 'import json,sys; print(json.load(sys.stdin)["id"])')
+          else
+            release_json=$(curl -fsSL -X POST \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              -H "Content-Type: application/json" \
+              -d "{\"tag_name\":\"${TAG_NAME}\",\"name\":\"${TAG_NAME}\",\"draft\":false,\"prerelease\":false}" \
+              "${api}/repos/${owner_repo}/releases")
+            release_id=$(printf '%s' "${release_json}" | python3 -c 'import json,sys; print(json.load(sys.stdin)["id"])')
+          fi
+          asset_path="VRWT_Tool/VRC_OSC/dist/vrc_osc-windows.zip"
+          curl -fsSL -X POST \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -F "attachment=@${asset_path}" \
+            "${api}/repos/${owner_repo}/releases/${release_id}/assets?name=vrc_osc-windows.zip"

VRWT_Tool/VRC_OSC/cmd/vrc_osc/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"vrc_osc_go/internal/app"
+)
+
+func main() {
+	var configPath string
+	var mode string
+	flag.StringVar(&configPath, "config", "config/config.toml", "path to config.toml")
+	flag.StringVar(&mode, "mode", "", "generate-json or extract-log")
+	flag.Parse()
+
+	if err := app.Run(configPath, mode); err != nil {
+		log.SetOutput(os.Stderr)
+		log.Fatalf("vrc_osc_go: %v", err)
+	}
+}

VRWT_Tool/VRC_OSC/cmd/vrc_osc_launcher/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+	"path/filepath"
+
+	"vrc_osc_go/internal/buildinfo"
+	"vrc_osc_go/internal/common"
+	"vrc_osc_go/internal/update"
+)
+
+func main() {
+	var baseURL string
+	var ownerRepo string
+	var assetName string
+	flag.StringVar(&baseURL, "base-url", "https://git.vrcworldtour.com", "Gitea base URL")
+	flag.StringVar(&ownerRepo, "repo", "every_holiday/VRCWT-OSC", "owner/repo")
+	flag.StringVar(&assetName, "asset", "vrc_osc-windows.zip", "release asset name")
+	flag.Parse()
+
+	client := &update.Client{BaseURL: baseURL}
+	mgr := &update.Manager{
+		Client:       client,
+		OwnerRepo:    ownerRepo,
+		AssetName:    assetName,
+		CurrentLabel: buildinfo.Version,
+	}
+	if _, err := mgr.CheckAndUpdate(); err != nil {
+		log.Printf("auto update skipped: %v", err)
+	}
+	exe := filepath.Join(common.RootDir(), "vrc_osc.exe")
+	if _, err := os.Stat(exe); err != nil {
+		log.Fatalf("missing exe: %v", err)
+	}
+	if err := update.Launch(exe, os.Args[1:]); err != nil {
+		log.Fatalf("launch failed: %v", err)
+	}
+}

VRWT_Tool/VRC_OSC/cmd/vrwt_tool/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+
+	"vrc_osc_go/internal/consenttool"
+)
+
+func main() {
+	var cfgPath string
+	var mode string
+
+	flag.StringVar(&cfgPath, "config", "config/consent.toml", "path to consent tool config")
+	flag.StringVar(&mode, "mode", "", "generate-json or extract-log")
+	flag.Parse()
+
+	if mode == "" && flag.NArg() > 0 {
+		mode = flag.Arg(0)
+	}
+
+	if mode == "" {
+		fmt.Fprintln(os.Stderr, "missing mode: generate-json or extract-log")
+		os.Exit(2)
+	}
+
+	if err := consenttool.Run(cfgPath, mode); err != nil {
+		log.SetOutput(os.Stderr)
+		log.Fatalf("vrwt_tool: %v", err)
+	}
+}

VRWT_Tool/VRC_OSC/go.mod

@@ -0,0 +1,4 @@
+module vrc_osc_go
+
+go 1.22
+

VRWT_Tool/VRC_OSC/internal/app/app.go

@@ -0,0 +1,72 @@
+package app
+
+import (
+	"log"
+	"os"
+	"os/signal"
+	"sync"
+	"syscall"
+	"time"
+
+	"vrc_osc_go/internal/config"
+	"vrc_osc_go/internal/consenttool"
+	"vrc_osc_go/internal/osc"
+)
+
+type discordMuteState struct {
+	mu            sync.Mutex
+	muted         bool
+	buttonPressed bool
+	lastAction    time.Time
+}
+
+func Run(configPath string, mode string) error {
+	if mode != "" {
+		return consenttool.Run(configPath, mode)
+	}
+
+	cfg, err := config.Load(configPath)
+	if err != nil {
+		return err
+	}
+	log.Printf("vrc_osc_go starting osc=%s:%d config=%s", cfg.OSC.Host, cfg.OSC.Port, configPath)
+
+	server := osc.NewServer(cfg.OSC.Host, cfg.OSC.Port)
+	discordState := &discordMuteState{muted: true}
+	server.Map("DiscordSend", func(_ string, args []osc.Value) error {
+		log.Printf("received DiscordSend args=%+v", args)
+		if err := handleDiscordSend(discordState, args); err != nil {
+			log.Printf("discord mute failed: %v", err)
+			return err
+		}
+		return nil
+	})
+	server.Map("ocrEnabled", func(_ string, args []osc.Value) error {
+		log.Printf("received ocrEnabled args=%+v", args)
+		if err := runPythonOcrFromScreen(); err != nil {
+			log.Printf("ocr failed: %v", err)
+			return err
+		}
+		return nil
+	})
+
+	errCh := make(chan error, 1)
+	go func() {
+		log.Printf("osc server listening on %s:%d", cfg.OSC.Host, cfg.OSC.Port)
+		errCh <- server.Serve()
+	}()
+	go watchVrchatLog()
+	startSelfMonitor(cfg, discordState)
+
+	sigCh := make(chan os.Signal, 1)
+	signal.Notify(sigCh, os.Interrupt, syscall.SIGTERM)
+	select {
+	case err := <-errCh:
+		log.Printf("osc server stopped: %v", err)
+		return err
+	case <-sigCh:
+		log.Printf("shutdown signal received")
+		server.Close()
+		return nil
+	}
+}

VRWT_Tool/VRC_OSC/internal/app/discord.go

@@ -0,0 +1,36 @@
+package app
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os/exec"
+)
+
+func pressDiscordMuteHotkey() error {
+	script := `
+$p = Get-Process | Where-Object { $_.MainWindowTitle -match 'Discord' } | Select-Object -First 1
+if ($null -eq $p) { exit 2 }
+[void][System.Runtime.InteropServices.Marshal]::GetLastWin32Error()
+$wshell = New-Object -ComObject WScript.Shell
+$null = $wshell.AppActivate($p.Id)
+Start-Sleep -Milliseconds 150
+$wshell.SendKeys('^+m')
+`
+
+	cmd := exec.Command("powershell", "-NoProfile", "-ExecutionPolicy", "Bypass", "-Command", script)
+	out, err := cmd.CombinedOutput()
+	if len(out) > 0 {
+		log.Printf("discord mute output: %s", string(out))
+	}
+	if err != nil {
+		return fmt.Errorf("discord mute failed: %w", err)
+	}
+	return nil
+}
+
+func pressDiscordMuteHotkeyLegacy() error {
+	var buf bytes.Buffer
+	_ = buf
+	return pressDiscordMuteHotkey()
+}

VRWT_Tool/VRC_OSC/internal/app/discord_mute.go

@@ -0,0 +1,88 @@
+package app
+
+import (
+	"fmt"
+	"log"
+	"strings"
+	"time"
+
+	"vrc_osc_go/internal/osc"
+)
+
+const discordDebounce = 300 * time.Millisecond
+
+func handleDiscordSend(state *discordMuteState, args []osc.Value) error {
+	state.mu.Lock()
+	defer state.mu.Unlock()
+
+	if len(args) == 0 {
+		return fmt.Errorf("OSC args is empty")
+	}
+	isPressed, err := toBool(args[0])
+	if err != nil {
+		return err
+	}
+
+	now := time.Now()
+	if !state.lastAction.IsZero() && now.Sub(state.lastAction) < discordDebounce {
+		return nil
+	}
+
+	if isPressed && !state.buttonPressed {
+		state.buttonPressed = true
+		if state.muted {
+			log.Printf("ACTION VRChat button pressed -> Discord unmute hotkey")
+			if err := pressDiscordMuteHotkey(); err != nil {
+				return err
+			}
+			state.muted = false
+			state.lastAction = now
+		} else {
+			log.Printf("INFO already unmuted")
+		}
+		return nil
+	}
+
+	if !isPressed && state.buttonPressed {
+		state.buttonPressed = false
+		if !state.muted {
+			log.Printf("ACTION VRChat button released -> Discord mute hotkey")
+			if err := pressDiscordMuteHotkey(); err != nil {
+				return err
+			}
+			state.muted = true
+			state.lastAction = now
+		} else {
+			log.Printf("INFO already muted")
+		}
+		return nil
+	}
+
+	return nil
+}
+
+func toBool(v osc.Value) (bool, error) {
+	switch v.Type {
+	case 'T':
+		return true, nil
+	case 'F':
+		return false, nil
+	case 'i':
+		return v.Int != 0, nil
+	case 'f':
+		return v.Float != 0, nil
+	case 's':
+		switch strings.ToLower(strings.TrimSpace(v.Str)) {
+		case "true", "1", "on", "yes":
+			return true, nil
+		case "false", "0", "off", "no":
+			return false, nil
+		default:
+			return false, fmt.Errorf("unsupported OSC value: %q", v.Str)
+		}
+	case 0:
+		return false, fmt.Errorf("unsupported OSC value")
+	default:
+		return false, fmt.Errorf("unsupported OSC type: %q", v.Type)
+	}
+}

VRWT_Tool/VRC_OSC/internal/app/ocr.go

@@ -0,0 +1,28 @@
+package app
+
+import (
+	"fmt"
+	"log"
+	"os/exec"
+)
+
+func runPythonOcrFromScreen() error {
+	script := `
+import sys
+from pathlib import Path
+root = Path(r"C:\Users\kenny\Documents\git\messpy\VRC\VRWT_Tool\VRC_OSC")
+sys.path.insert(0, str(root / "src"))
+from ocr.ocr_actions import runOcrFromScreen
+runOcrFromScreen()
+`
+	cmd := exec.Command("python", "-c", script)
+	cmd.Dir = `C:\Users\kenny\Documents\git\messpy\VRC\VRWT_Tool\VRC_OSC`
+	out, err := cmd.CombinedOutput()
+	if len(out) > 0 {
+		log.Printf("ocr output: %s", string(out))
+	}
+	if err != nil {
+		return fmt.Errorf("ocr failed: %w", err)
+	}
+	return nil
+}

VRWT_Tool/VRC_OSC/internal/app/runtime.go

@@ -0,0 +1,48 @@
+package app
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"vrc_osc_go/internal/common"
+)
+
+func appendRuntimeLog(title, text string) error {
+	dir := filepath.Join(common.RootDir(), "runtime")
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return err
+	}
+	path := filepath.Join(dir, "runtime.log")
+	body := text
+	if body == "" {
+		body = "(empty)"
+	}
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0o644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	_, err = fmt.Fprintf(f, "\n[%s] %s\n%s\n", time.Now().Format("2006-01-02 15:04:05"), title, body)
+	return err
+}
+
+func appendJoinLeaveLog(text string) error {
+	dir := filepath.Join(common.RootDir(), "runtime")
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return err
+	}
+	path := filepath.Join(dir, "join_leave.log")
+	body := text
+	if body == "" {
+		body = "(empty)"
+	}
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0o644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	_, err = fmt.Fprintf(f, "\n[%s] VRC JOIN/LEAVE\n%s\n", time.Now().Format("2006-01-02 15:04:05"), body)
+	return err
+}

VRWT_Tool/VRC_OSC/internal/app/self_monitor.go

@@ -0,0 +1,69 @@
+package app
+
+import (
+	"log"
+	"os"
+	"regexp"
+	"strings"
+	"time"
+
+	"vrc_osc_go/internal/config"
+	"vrc_osc_go/internal/osc"
+)
+
+var (
+	selfJoinPattern = regexp.MustCompile(`OnPlayerJoined\s+(.+?)\s+\(usr_[0-9a-fA-F-]+\)`)
+	selfLeftPattern = regexp.MustCompile(`OnPlayerLeft\s+(.+?)\s+\(usr_[0-9a-fA-F-]+\)`)
+)
+
+func startSelfMonitor(cfg *config.Config, state *discordMuteState) {
+	if cfg.VrcLog.SelfName == "" {
+		return
+	}
+	go func() {
+		lastState := ""
+		for {
+			path, err := findLatestVrchatLog()
+			if err != nil {
+				time.Sleep(2 * time.Second)
+				continue
+			}
+			text, err := os.ReadFile(path)
+			if err != nil {
+				time.Sleep(2 * time.Second)
+				continue
+			}
+			nextState := extractLatestSelfLogState(string(text), cfg.VrcLog.SelfName)
+			if nextState != "" && nextState != lastState {
+				if nextState == "joined" {
+					if err := handleDiscordSend(state, []osc.Value{{Type: 'T', Bool: true}}); err != nil {
+						log.Printf("self monitor discord mute failed: %v", err)
+					}
+				} else if nextState == "left" {
+					if err := handleDiscordSend(state, []osc.Value{{Type: 'F', Bool: false}}); err != nil {
+						log.Printf("self monitor discord mute failed: %v", err)
+					}
+				}
+				lastState = nextState
+			}
+			time.Sleep(2 * time.Second)
+		}
+	}()
+}
+
+func extractLatestSelfLogState(text, selfName string) string {
+	if selfName == "" {
+		return ""
+	}
+	state := ""
+	for _, rawLine := range strings.Split(text, "\n") {
+		if m := selfJoinPattern.FindStringSubmatch(rawLine); len(m) == 2 && strings.TrimSpace(m[1]) == selfName {
+			state = "joined"
+			continue
+		}
+		if m := selfLeftPattern.FindStringSubmatch(rawLine); len(m) == 2 && strings.TrimSpace(m[1]) == selfName {
+			state = "left"
+		}
+	}
+	return state
+}

VRWT_Tool/VRC_OSC/internal/app/vrc_log.go

@@ -0,0 +1,313 @@
+package app
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"time"
+)
+
+var (
+	joinPattern          = regexp.MustCompile(`OnPlayerJoined\s+(.+?)\s+\(usr_[0-9a-fA-F-]+\)`)
+	leftPattern          = regexp.MustCompile(`OnPlayerLeft\s+(.+?)\s+\(usr_[0-9a-fA-F-]+\)`)
+	worldIdPattern       = regexp.MustCompile(`worldId=(wrld_[0-9a-fA-F-]+)`)
+	instanceIdPattern    = regexp.MustCompile(`instanceId=([^,}\s]+)`)
+	worldNamePattern     = regexp.MustCompile(`worldName=([^,}]+)`)
+	worldLocationPattern = regexp.MustCompile(`worldId=(wrld_[0-9a-fA-F-]+):([^\s,\]\)\"']+)`)
+	worldPattern         = regexp.MustCompile(`(wrld_[0-9a-fA-F-]+(?::[^\s\]\)\"']+)?)`)
+	enteringRoomPattern  = regexp.MustCompile(`\[Behaviour\]\s+(?:Entering Room|Joining or Creating Room):\s+(.+)$`)
+)
+
+type vrcLogState struct {
+	location         string
+	worldID          string
+	instanceID       string
+	worldName        string
+	pendingWorldName string
+	presentSet       map[string]struct{}
+	initialized      bool
+}
+
+func getVrchatLogDir() (string, error) {
+	userProfile := os.Getenv("USERPROFILE")
+	if userProfile == "" {
+		return "", os.ErrNotExist
+	}
+	return filepath.Join(userProfile, "AppData", "LocalLow", "VRChat", "VRChat"), nil
+}
+
+func findLatestVrchatLog() (string, error) {
+	dir, err := getVrchatLogDir()
+	if err != nil {
+		return "", err
+	}
+
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return "", err
+	}
+
+	var latest string
+	var latestMod time.Time
+	for _, entry := range entries {
+		if entry.IsDir() {
+			continue
+		}
+		name := entry.Name()
+		if !strings.HasSuffix(strings.ToLower(name), ".log") && !strings.HasSuffix(strings.ToLower(name), ".txt") {
+			continue
+		}
+		info, err := entry.Info()
+		if err != nil {
+			continue
+		}
+		if info.ModTime().After(latestMod) {
+			latestMod = info.ModTime()
+			latest = filepath.Join(dir, name)
+		}
+	}
+	if latest == "" {
+		return "", os.ErrNotExist
+	}
+	return latest, nil
+}
+
+func watchVrchatLog() {
+	lastPath := ""
+	lastSize := int64(0)
+	state := &vrcLogState{
+		presentSet: map[string]struct{}{},
+	}
+	for {
+		path, err := findLatestVrchatLog()
+		if err != nil {
+			time.Sleep(2 * time.Second)
+			continue
+		}
+		info, err := os.Stat(path)
+		if err != nil {
+			time.Sleep(2 * time.Second)
+			continue
+		}
+		if path != lastPath {
+			log.Printf("vrchat log watching %s", path)
+			lastPath = path
+			lastSize = 0
+			if err := scanExistingVrchatLog(path, state); err != nil {
+				log.Printf("vrchat log initial scan failed: %v", err)
+			}
+			if info2, err := os.Stat(path); err == nil {
+				lastSize = info2.Size()
+			} else {
+				lastSize = info.Size()
+			}
+			time.Sleep(2 * time.Second)
+			continue
+		}
+
+		if info.Size() < lastSize {
+			lastSize = 0
+		}
+		if info.Size() > lastSize {
+			f, err := os.Open(path)
+			if err != nil {
+				time.Sleep(2 * time.Second)
+				continue
+			}
+			_, _ = f.Seek(lastSize, 0)
+			scanner := bufio.NewScanner(f)
+			for scanner.Scan() {
+				line := scanner.Text()
+				if err := appendRuntimeLog("VRC LOG", line); err != nil {
+					log.Printf("append runtime log failed: %v", err)
+				}
+				if changed, worldLabel := updateWorldState(state, line); changed {
+					log.Printf("world changed: %s", worldLabel)
+					state.presentSet = map[string]struct{}{}
+					_ = appendRuntimeLog("VRC WORLD", worldLabel)
+				}
+				if m := joinPattern.FindStringSubmatch(line); len(m) == 2 {
+					name := strings.TrimSpace(m[1])
+					state.presentSet[name] = struct{}{}
+					out := fmt.Sprintf("[join] %s (%d)", name, len(state.presentSet))
+					log.Print(out)
+					_ = appendJoinLeaveLog(out)
+					continue
+				}
+				if m := leftPattern.FindStringSubmatch(line); len(m) == 2 {
+					name := strings.TrimSpace(m[1])
+					delete(state.presentSet, name)
+					out := fmt.Sprintf("[leave] %s (%d)", name, len(state.presentSet))
+					log.Print(out)
+					_ = appendJoinLeaveLog(out)
+					continue
+				}
+			}
+			lastSize = info.Size()
+			_ = f.Close()
+		}
+		time.Sleep(2 * time.Second)
+	}
+}
+
+func scanExistingVrchatLog(path string, state *vrcLogState) error {
+	f, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	state.presentSet = map[string]struct{}{}
+	state.location = ""
+	state.worldID = ""
+	state.instanceID = ""
+	state.worldName = ""
+	state.pendingWorldName = ""
+	state.initialized = false
+
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if changed, _ := updateWorldState(state, line); changed {
+			state.presentSet = map[string]struct{}{}
+		}
+		if m := joinPattern.FindStringSubmatch(line); len(m) == 2 {
+			name := strings.TrimSpace(m[1])
+			state.presentSet[name] = struct{}{}
+			continue
+		}
+		if m := leftPattern.FindStringSubmatch(line); len(m) == 2 {
+			name := strings.TrimSpace(m[1])
+			delete(state.presentSet, name)
+			continue
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		return err
+	}
+	state.initialized = true
+	if state.worldName != "" {
+		log.Printf("world changed: %s", state.worldName)
+		_ = appendRuntimeLog("VRC WORLD", state.worldName)
+	}
+	return nil
+}
+
+func updateWorldState(state *vrcLogState, line string) (bool, string) {
+	worldID := ""
+	instanceID := ""
+	worldName := ""
+	roomTitle := ""
+
+	if m := enteringRoomPattern.FindStringSubmatch(line); len(m) == 2 {
+		roomTitle = strings.TrimSpace(m[1])
+		state.pendingWorldName = roomTitle
+	}
+	if m := worldLocationPattern.FindStringSubmatch(line); len(m) == 3 {
+		worldID = strings.TrimSpace(m[1])
+		instanceID = strings.TrimSpace(m[2])
+	}
+
+	if m := worldIdPattern.FindStringSubmatch(line); len(m) == 2 {
+		worldID = strings.TrimSpace(m[1])
+	}
+	if m := instanceIdPattern.FindStringSubmatch(line); len(m) == 2 {
+		instanceID = strings.TrimSpace(m[1])
+	}
+	if m := worldNamePattern.FindStringSubmatch(line); len(m) == 2 {
+		worldName = strings.TrimSpace(m[1])
+	}
+
+	if m := enteringRoomPattern.FindStringSubmatch(line); len(m) == 2 && worldID == "" {
+		if worldMatch := worldPattern.FindStringSubmatch(m[1]); len(worldMatch) == 2 {
+			worldID = worldMatch[1]
+		}
+	}
+
+	nextLocation := ""
+	if worldID != "" {
+		nextLocation = worldID
+		if instanceID != "" {
+			nextLocation = worldID + ":" + instanceID
+		}
+	}
+
+	if nextLocation != "" && nextLocation != state.location {
+		state.location = nextLocation
+		state.worldID = worldID
+		state.instanceID = instanceID
+		if worldName != "" {
+			state.worldName = worldName
+		} else if shouldUseRoomTitlePreferLatest(roomTitle, state.worldName) {
+			state.worldName = roomTitle
+		}
+		label := state.worldName
+		if label == "" {
+			label = state.worldID
+		}
+		if label == "" {
+			label = nextLocation
+		}
+		if state.initialized {
+			log.Printf("world changed: %s", label)
+			_ = appendRuntimeLog("VRC WORLD", label)
+		}
+		return true, label
+	}
+
+	if worldName != "" {
+		state.worldName = worldName
+		state.pendingWorldName = ""
+		return false, ""
+	}
+	if shouldUseRoomTitlePreferLatest(roomTitle, state.worldName) {
+		state.worldName = roomTitle
+	}
+
+	return false, ""
+}
+
+func shouldUseRoomTitle(roomTitle, currentWorldName string) bool {
+	if roomTitle == "" {
+		return false
+	}
+	if strings.Contains(roomTitle, "Home Location") {
+		return false
+	}
+	if roomTitle == "Holiday-Cottage" && currentWorldName != "" && currentWorldName != roomTitle {
+		return false
+	}
+	if currentWorldName == "" {
+		return true
+	}
+	if roomTitle == currentWorldName {
+		return false
+	}
+	if len(roomTitle) > len(currentWorldName) {
+		return true
+	}
+	if strings.Contains(roomTitle, "「") || strings.Contains(roomTitle, "」") || strings.Contains(roomTitle, "[") {
+		return true
+	}
+	return false
+}
+
+func shouldUseRoomTitlePreferLatest(roomTitle, currentWorldName string) bool {
+	if roomTitle == "" {
+		return false
+	}
+	if strings.Contains(roomTitle, "Home Location") {
+		return false
+	}
+	if currentWorldName == "" {
+		return true
+	}
+	if roomTitle == currentWorldName {
+		return false
+	}
+	return true
+}

VRWT_Tool/VRC_OSC/internal/buildinfo/buildinfo.go

@@ -0,0 +1,6 @@
+package buildinfo
+
+var (
+	Version   = "dev"
+	BuildTime = "unknown"
+)

VRWT_Tool/VRC_OSC/internal/common/project_paths.go

@@ -0,0 +1,16 @@
+package common
+
+import (
+	"os"
+	"path/filepath"
+)
+
+func RuntimeBaseDir() string {
+	exe, err := os.Executable()
+	if err == nil {
+		return filepath.Dir(exe)
+	}
+	return "."
+}
+
+func RootDir() string { return RuntimeBaseDir() }

VRWT_Tool/VRC_OSC/internal/config/config.go

@@ -0,0 +1,118 @@
+package config
+
+import (
+	"bufio"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"vrc_osc_go/internal/common"
+)
+
+type Config struct {
+	OSC    OSCConfig
+	VrcLog VrcLogConfig
+}
+
+type OSCConfig struct {
+	Host string
+	Port int
+}
+
+type VrcLogConfig struct {
+	SelfName     string
+	GuestNames   []string
+	StaffNames   []string
+	MissingCount int
+	LogPatterns  []string
+}
+
+func Load(path string) (*Config, error) {
+	cfg := &Config{
+		OSC: OSCConfig{Host: "127.0.0.1", Port: 9001},
+	}
+	if path == "" {
+		path = filepath.Join(common.RootDir(), "config", "config.toml")
+	} else if !filepath.IsAbs(path) {
+		path = filepath.Join(common.RootDir(), path)
+	}
+	file, err := os.Open(path)
+	if err != nil {
+		return cfg, nil
+	}
+	defer file.Close()
+
+	var section string
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		line = strings.TrimPrefix(line, "\ufeff")
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
+			section = strings.Trim(line, "[]")
+			continue
+		}
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) != 2 {
+			continue
+		}
+		key := strings.TrimSpace(parts[0])
+		val := strings.TrimSpace(parts[1])
+		val = strings.Trim(val, "\"'")
+		switch section {
+		case "osc":
+			switch key {
+			case "host":
+				cfg.OSC.Host = val
+			case "port":
+				if n, err := strconv.Atoi(val); err == nil {
+					cfg.OSC.Port = n
+				}
+			}
+		case "self":
+			if key == "name" {
+				cfg.VrcLog.SelfName = val
+			}
+		case "notice":
+			if key == "missing_count" {
+				if n, err := strconv.Atoi(val); err == nil {
+					cfg.VrcLog.MissingCount = n
+				}
+			}
+		case "vrc_log":
+			if key == "patterns" {
+				cfg.VrcLog.LogPatterns = parseList(val)
+			}
+		case "staff":
+			if key == "names" {
+				cfg.VrcLog.StaffNames = parseList(val)
+			}
+		case "guest":
+			if key == "names" {
+				cfg.VrcLog.GuestNames = parseList(val)
+			}
+		}
+	}
+	return cfg, scanner.Err()
+}
+
+func parseList(value string) []string {
+	value = strings.TrimSpace(value)
+	value = strings.TrimPrefix(value, "[")
+	value = strings.TrimSuffix(value, "]")
+	if value == "" {
+		return nil
+	}
+	parts := strings.Split(value, ",")
+	out := make([]string, 0, len(parts))
+	for _, part := range parts {
+		part = strings.TrimSpace(strings.Trim(part, "\"'"))
+		if part != "" {
+			out = append(out, part)
+		}
+	}
+	return out
+}

VRWT_Tool/VRC_OSC/internal/consenttool/config.go

@@ -0,0 +1,144 @@
+package consenttool
+
+import (
+	"bufio"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+type Config struct {
+	Consent ConsentConfig
+	Log     LogConfig
+}
+
+type ConsentConfig struct {
+	InputCSV        string
+	OutputJSON      string
+	DisplayFields   []string
+	ConsentFields   []string
+	ConsentValues   []string
+	NormalizeCase   bool
+	AllowDuplicates bool
+}
+
+type LogConfig struct {
+	InputPath    string
+	OutputPath   string
+	IncludeRegex string
+	KeepNonMatch bool
+}
+
+func LoadConfig(path string) (*Config, error) {
+	cfg := &Config{
+		Consent: ConsentConfig{
+			InputCSV:        "config/consent.csv",
+			OutputJSON:      "config/consent_list.json",
+			DisplayFields:   []string{"display_name", "vrchat_name", "name"},
+			ConsentFields:   []string{"consent", "agree", "agreed", "checked"},
+			ConsentValues:   []string{"1", "true", "yes", "y", "on", "checked"},
+			NormalizeCase:   false,
+			AllowDuplicates: false,
+		},
+		Log: LogConfig{
+			InputPath:    "runtime/output_log.txt",
+			OutputPath:   "runtime/research_log.txt",
+			IncludeRegex: `\[[A-Z0-9:_ -]+\]`,
+			KeepNonMatch: false,
+		},
+	}
+
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	var section string
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		line = strings.TrimPrefix(line, "\ufeff")
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
+			section = strings.Trim(line, "[]")
+			continue
+		}
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) != 2 {
+			continue
+		}
+		key := strings.TrimSpace(parts[0])
+		val := strings.TrimSpace(parts[1])
+		val = strings.Trim(val, "\"'")
+
+		switch section {
+		case "consent":
+			switch key {
+			case "input_csv":
+				cfg.Consent.InputCSV = val
+			case "output_json":
+				cfg.Consent.OutputJSON = val
+			case "display_fields":
+				cfg.Consent.DisplayFields = parseList(val)
+			case "consent_fields":
+				cfg.Consent.ConsentFields = parseList(val)
+			case "consent_values":
+				cfg.Consent.ConsentValues = parseList(val)
+			case "normalize_case":
+				cfg.Consent.NormalizeCase = parseBool(val)
+			case "allow_duplicates":
+				cfg.Consent.AllowDuplicates = parseBool(val)
+			}
+		case "log":
+			switch key {
+			case "input_path":
+				cfg.Log.InputPath = val
+			case "output_path":
+				cfg.Log.OutputPath = val
+			case "include_regex":
+				cfg.Log.IncludeRegex = val
+			case "keep_non_match":
+				cfg.Log.KeepNonMatch = parseBool(val)
+			}
+		}
+	}
+	return cfg, scanner.Err()
+}
+
+func parseList(value string) []string {
+	value = strings.TrimSpace(value)
+	value = strings.TrimPrefix(value, "[")
+	value = strings.TrimSuffix(value, "]")
+	if value == "" {
+		return nil
+	}
+	items := strings.Split(value, ",")
+	out := make([]string, 0, len(items))
+	for _, item := range items {
+		item = strings.TrimSpace(item)
+		item = strings.Trim(item, "\"'")
+		if item != "" {
+			out = append(out, item)
+		}
+	}
+	return out
+}
+
+func parseBool(value string) bool {
+	n, err := strconv.ParseBool(strings.TrimSpace(value))
+	return err == nil && n
+}
+
+func resolvePath(baseDir, value string) string {
+	if value == "" {
+		return ""
+	}
+	if filepath.IsAbs(value) {
+		return value
+	}
+	return filepath.Clean(filepath.Join(baseDir, value))
+}

VRWT_Tool/VRC_OSC/internal/consenttool/tool.go

@@ -0,0 +1,183 @@
+package consenttool
+
+import (
+	"encoding/csv"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+func Run(configPath string, mode string) error {
+	cfg, err := LoadConfig(configPath)
+	if err != nil {
+		return err
+	}
+	baseDir := filepath.Dir(configPath)
+
+	switch mode {
+	case "generate-json":
+		return generateJSON(cfg, baseDir)
+	case "extract-log":
+		return extractLog(cfg, baseDir)
+	default:
+		return fmt.Errorf("unknown mode %q", mode)
+	}
+}
+
+func generateJSON(cfg *Config, baseDir string) error {
+	inputPath := resolvePath(baseDir, cfg.Consent.InputCSV)
+	outputPath := resolvePath(baseDir, cfg.Consent.OutputJSON)
+
+	rows, err := readCSVRows(inputPath)
+	if err != nil {
+		return err
+	}
+
+	names := collectConsentedNames(rows, cfg.Consent)
+	body, err := json.MarshalIndent(names, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	if err := os.MkdirAll(filepath.Dir(outputPath), 0o755); err != nil {
+		return err
+	}
+	return os.WriteFile(outputPath, append(body, '\n'), 0o644)
+}
+
+func extractLog(cfg *Config, baseDir string) error {
+	inputPath := resolvePath(baseDir, cfg.Log.InputPath)
+	outputPath := resolvePath(baseDir, cfg.Log.OutputPath)
+
+	data, err := os.ReadFile(inputPath)
+	if err != nil {
+		return err
+	}
+
+	re, err := regexp.Compile(cfg.Log.IncludeRegex)
+	if err != nil {
+		return err
+	}
+
+	var kept []string
+	for _, line := range strings.Split(strings.ReplaceAll(string(data), "\r\n", "\n"), "\n") {
+		if re.MatchString(line) {
+			kept = append(kept, line)
+			continue
+		}
+		if cfg.Log.KeepNonMatch {
+			kept = append(kept, line)
+		}
+	}
+
+	body := strings.Join(kept, "\n")
+	if body != "" {
+		body += "\n"
+	}
+	if err := os.MkdirAll(filepath.Dir(outputPath), 0o755); err != nil {
+		return err
+	}
+	return os.WriteFile(outputPath, []byte(body), 0o644)
+}
+
+func readCSVRows(path string) ([]map[string]string, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	r := csv.NewReader(file)
+	headers, err := r.Read()
+	if err != nil {
+		return nil, err
+	}
+	for i, header := range headers {
+		headers[i] = strings.TrimPrefix(strings.TrimSpace(header), "\ufeff")
+	}
+
+	var rows []map[string]string
+	for {
+		record, err := r.Read()
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			return nil, err
+		}
+		row := make(map[string]string, len(headers))
+		for i, header := range headers {
+			if i < len(record) {
+				row[strings.TrimSpace(header)] = strings.TrimPrefix(strings.TrimSpace(record[i]), "\ufeff")
+			}
+		}
+		rows = append(rows, row)
+	}
+	return rows, nil
+}
+
+func collectConsentedNames(rows []map[string]string, cfg ConsentConfig) []string {
+	displayFields := cfg.DisplayFields
+	if len(displayFields) == 0 {
+		displayFields = []string{"display_name", "vrchat_name", "name"}
+	}
+	consentFields := cfg.ConsentFields
+	if len(consentFields) == 0 {
+		consentFields = []string{"consent", "agree", "agreed", "checked"}
+	}
+	accepted := make(map[string]struct{})
+	var names []string
+
+	for _, row := range rows {
+		if !rowIsConsented(row, consentFields, cfg.ConsentValues) {
+			continue
+		}
+		name := firstNonEmpty(row, displayFields)
+		if name == "" {
+			continue
+		}
+		key := name
+		if cfg.NormalizeCase {
+			key = strings.ToLower(key)
+		}
+		if !cfg.AllowDuplicates {
+			if _, ok := accepted[key]; ok {
+				continue
+			}
+			accepted[key] = struct{}{}
+		}
+		names = append(names, name)
+	}
+	return names
+}
+
+func rowIsConsented(row map[string]string, fields []string, values []string) bool {
+	if len(values) == 0 {
+		values = []string{"1", "true", "yes", "y", "on", "checked"}
+	}
+	allowed := make(map[string]struct{}, len(values))
+	for _, v := range values {
+		allowed[strings.ToLower(strings.TrimSpace(v))] = struct{}{}
+	}
+	for _, field := range fields {
+		if v, ok := row[field]; ok {
+			if _, ok := allowed[strings.ToLower(strings.TrimSpace(v))]; ok {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func firstNonEmpty(row map[string]string, fields []string) string {
+	for _, field := range fields {
+		if v := strings.TrimSpace(row[field]); v != "" {
+			return v
+		}
+	}
+	return ""
+}

VRWT_Tool/VRC_OSC/internal/consenttool/tool_test.go

@@ -0,0 +1,44 @@
+package consenttool
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestCollectConsentedNames(t *testing.T) {
+	rows := []map[string]string{
+		{"display_name": "Alice", "consent": "true"},
+		{"display_name": "Bob", "consent": "false"},
+		{"display_name": "Alice", "consent": "yes"},
+	}
+
+	names := collectConsentedNames(rows, ConsentConfig{})
+	if len(names) != 1 || names[0] != "Alice" {
+		t.Fatalf("unexpected names: %#v", names)
+	}
+}
+
+func TestExtractLog(t *testing.T) {
+	dir := t.TempDir()
+	cfg := &Config{
+		Log: LogConfig{
+			InputPath:    "input.log",
+			OutputPath:   "out.log",
+			IncludeRegex: `ID:[0-9]+`,
+		},
+	}
+	if err := os.WriteFile(filepath.Join(dir, "input.log"), []byte("x\nID:1 hello\nnope\n"), 0o600); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+	if err := extractLog(cfg, dir); err != nil {
+		t.Fatalf("extractLog: %v", err)
+	}
+	out, err := os.ReadFile(filepath.Join(dir, "out.log"))
+	if err != nil {
+		t.Fatalf("ReadFile: %v", err)
+	}
+	if string(out) != "ID:1 hello\n" {
+		t.Fatalf("unexpected output: %q", string(out))
+	}
+}

VRWT_Tool/VRC_OSC/internal/osc/server.go

@@ -0,0 +1,141 @@
+package osc
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"math"
+	"net"
+	"strings"
+	"sync"
+)
+
+type Value struct {
+	Type  byte
+	Float float32
+	Int   int32
+	Bool  bool
+	Str   string
+}
+
+type Handler func(address string, args []Value) error
+
+type Server struct {
+	addr     string
+	conn     *net.UDPConn
+	handlers map[string]Handler
+	mu       sync.RWMutex
+}
+
+func NewServer(host string, port int) *Server {
+	return &Server{
+		addr:     fmt.Sprintf("%s:%d", host, port),
+		handlers: map[string]Handler{},
+	}
+}
+
+func (s *Server) Map(param string, h Handler) { s.handlers["/avatar/parameters/"+param] = h }
+func (s *Server) Close() error {
+	if s.conn != nil {
+		return s.conn.Close()
+	}
+	return nil
+}
+
+func (s *Server) Serve() error {
+	addr, err := net.ResolveUDPAddr("udp", s.addr)
+	if err != nil {
+		return err
+	}
+	conn, err := net.ListenUDP("udp", addr)
+	if err != nil {
+		return err
+	}
+	s.conn = conn
+	buf := make([]byte, 2048)
+	for {
+		n, _, err := conn.ReadFromUDP(buf)
+		if err != nil {
+			return err
+		}
+		a, v, err := parseMessage(buf[:n])
+		if err != nil {
+			continue
+		}
+		s.mu.RLock()
+		h := s.handlers[a]
+		s.mu.RUnlock()
+		if h != nil {
+			_ = h(a, v)
+		}
+	}
+}
+
+func parseMessage(b []byte) (string, []Value, error) {
+	address, offset, err := parsePaddedString(b, 0)
+	if err != nil {
+		return "", nil, err
+	}
+	if !strings.HasPrefix(address, "/") {
+		return "", nil, fmt.Errorf("invalid address")
+	}
+	if offset >= len(b) {
+		return address, nil, nil
+	}
+	typetags, offset, err := parsePaddedString(b, offset)
+	if err != nil {
+		return "", nil, err
+	}
+	if !strings.HasPrefix(typetags, ",") {
+		return address, nil, nil
+	}
+	var values []Value
+	for _, tag := range typetags[1:] {
+		switch tag {
+		case 'i':
+			if offset+4 > len(b) {
+				return "", nil, fmt.Errorf("invalid int")
+			}
+			values = append(values, Value{Type: 'i', Int: int32(binary.BigEndian.Uint32(b[offset : offset+4]))})
+			offset += 4
+		case 'f':
+			if offset+4 > len(b) {
+				return "", nil, fmt.Errorf("invalid float")
+			}
+			bits := binary.BigEndian.Uint32(b[offset : offset+4])
+			values = append(values, Value{Type: 'f', Float: math.Float32frombits(bits)})
+			offset += 4
+		case 's':
+			s, next, err := parsePaddedString(b, offset)
+			if err != nil {
+				return "", nil, err
+			}
+			values = append(values, Value{Type: 's', Str: s})
+			offset = next
+		case 'T':
+			values = append(values, Value{Type: 'T', Bool: true})
+		case 'F':
+			values = append(values, Value{Type: 'F', Bool: false})
+		}
+	}
+	return address, values, nil
+}
+
+func parsePaddedString(b []byte, offset int) (string, int, error) {
+	if offset >= len(b) {
+		return "", offset, fmt.Errorf("invalid osc string")
+	}
+	end := bytes.IndexByte(b[offset:], 0)
+	if end < 0 {
+		return "", offset, fmt.Errorf("invalid osc string")
+	}
+	s := string(b[offset : offset+end])
+	next := offset + end + 1
+	for next%4 != 0 {
+		next++
+	}
+	if next > len(b) {
+		next = len(b)
+	}
+	return s, next, nil
+}

VRWT_Tool/VRC_OSC/internal/update/manager.go

@@ -0,0 +1,106 @@
+package update
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+
+	"vrc_osc_go/internal/buildinfo"
+	"vrc_osc_go/internal/common"
+)
+
+type Manager struct {
+	Client       *Client
+	OwnerRepo    string
+	AssetName    string
+	CurrentLabel string
+}
+
+func (m *Manager) CheckAndUpdate() (bool, error) {
+	if m.Client == nil || m.OwnerRepo == "" || m.AssetName == "" {
+		return false, nil
+	}
+	latest, err := m.Client.LatestRelease(m.OwnerRepo)
+	if err != nil {
+		return false, err
+	}
+	if latest.TagName == "" || latest.TagName == m.CurrentLabel {
+		return false, nil
+	}
+	assetURL := ""
+	for _, a := range latest.Assets {
+		if a.Name == m.AssetName {
+			assetURL = a.URL
+			break
+		}
+	}
+	if assetURL == "" {
+		return false, fmt.Errorf("asset %q not found in release %s", m.AssetName, latest.TagName)
+	}
+	base := common.RootDir()
+	tmpDir := filepath.Join(base, "update", latest.TagName)
+	if err := os.MkdirAll(tmpDir, 0o755); err != nil {
+		return false, err
+	}
+	zipPath := filepath.Join(tmpDir, m.AssetName)
+	log.Printf("update available: %s -> %s", m.CurrentLabel, latest.TagName)
+	if err := m.Client.DownloadAsset(assetURL, zipPath); err != nil {
+		return false, err
+	}
+	if err := ExtractZip(zipPath, tmpDir); err != nil {
+		return false, err
+	}
+	exePath := filepath.Join(base, CurrentExeName())
+	newExe := filepath.Join(tmpDir, CurrentExeName())
+	if _, err := os.Stat(newExe); err != nil {
+		return false, err
+	}
+	backup := exePath + ".bak"
+	_ = os.Remove(backup)
+	if err := os.Rename(exePath, backup); err != nil {
+		return false, err
+	}
+	if err := CopyFile(newExe, exePath); err != nil {
+		_ = os.Rename(backup, exePath)
+		return false, err
+	}
+	_ = os.Remove(backup)
+	return true, nil
+}
+
+func CopyFile(src, dst string) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+	if err := os.MkdirAll(filepath.Dir(dst), 0o755); err != nil {
+		return err
+	}
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	_, err = io.Copy(out, in)
+	return err
+}
+
+func Launch(exe string, args []string) error {
+	cmd := exec.Command(exe, args...)
+	cmd.Dir = filepath.Dir(exe)
+	return cmd.Start()
+}
+
+func Version() string { return buildinfo.Version }
+
+func CurrentExeName() string {
+	if runtime.GOOS == "windows" {
+		return "vrc_osc.exe"
+	}
+	return "vrc_osc"
+}

VRWT_Tool/VRC_OSC/internal/update/release.go

@@ -0,0 +1,125 @@
+package update
+
+import (
+	"archive/zip"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+type ReleaseInfo struct {
+	TagName string `json:"tag_name"`
+	Assets  []struct {
+		Name string `json:"name"`
+		URL  string `json:"browser_download_url"`
+	} `json:"assets"`
+}
+
+type Client struct {
+	BaseURL string
+	HTTP    *http.Client
+}
+
+func (c *Client) LatestRelease(ownerRepo string) (*ReleaseInfo, error) {
+	req, err := http.NewRequest(http.MethodGet, c.apiURL(ownerRepo, "/releases/latest"), nil)
+	if err != nil {
+		return nil, err
+	}
+	var info ReleaseInfo
+	if err := c.doJSON(req, &info); err != nil {
+		return nil, err
+	}
+	return &info, nil
+}
+
+func (c *Client) DownloadAsset(url, dst string) error {
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		return err
+	}
+	resp, err := c.httpClient().Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("download failed: %s", resp.Status)
+	}
+	f, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	_, err = io.Copy(f, resp.Body)
+	return err
+}
+
+func ExtractZip(zipPath, dstDir string) error {
+	zr, err := zip.OpenReader(zipPath)
+	if err != nil {
+		return err
+	}
+	defer zr.Close()
+	root := filepath.Clean(dstDir) + string(os.PathSeparator)
+	for _, f := range zr.File {
+		target := filepath.Clean(filepath.Join(dstDir, f.Name))
+		if target != filepath.Clean(dstDir) && !strings.HasPrefix(target, root) {
+			return fmt.Errorf("zip path escapes destination: %s", f.Name)
+		}
+		if f.FileInfo().IsDir() {
+			if err := os.MkdirAll(target, 0o755); err != nil {
+				return err
+			}
+			continue
+		}
+		if err := os.MkdirAll(filepath.Dir(target), 0o755); err != nil {
+			return err
+		}
+		rc, err := f.Open()
+		if err != nil {
+			return err
+		}
+		out, err := os.Create(target)
+		if err != nil {
+			rc.Close()
+			return err
+		}
+		_, copyErr := io.Copy(out, rc)
+		out.Close()
+		rc.Close()
+		if copyErr != nil {
+			return copyErr
+		}
+	}
+	return nil
+}
+
+func (c *Client) apiURL(ownerRepo, suffix string) string {
+	base := strings.TrimRight(c.BaseURL, "/")
+	return base + "/api/v1/repos/" + strings.Trim(ownerRepo, "/") + suffix
+}
+
+func (c *Client) doJSON(req *http.Request, out any) error {
+	resp, err := c.httpClient().Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(io.LimitReader(resp.Body, 2048))
+		return fmt.Errorf("request failed: %s: %s", resp.Status, strings.TrimSpace(string(body)))
+	}
+	return json.NewDecoder(resp.Body).Decode(out)
+}
+
+func (c *Client) httpClient() *http.Client {
+	if c.HTTP != nil {
+		return c.HTTP
+	}
+	return &http.Client{Timeout: 30 * time.Second}
+}