From f92f8588dc0577d704951c7aa8a7cbc23d9c06d7 Mon Sep 17 00:00:00 2001
From: Lucas Modrich <2934597+lucasmodrich@users.noreply.github.com>
Date: Sat, 21 Feb 2026 14:15:56 +1100
Subject: [PATCH] feat: embed Windows VERSIONINFO resource in gwtm.exe

Add a build-ignored gen_versioninfo.go helper that writes versioninfo.json
from the release version string, and wire goversioninfo into the GoReleaser
pre-build hooks so resource_windows.syso is compiled and linked for Windows
builds. This populates the Details tab in Windows Explorer (description,
version, copyright, product name) for gwtm.exe.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .gitignore                                  |   4 +
 .goreleaser.yml                             |   5 +
 cmd/git-worktree-manager/gen_versioninfo.go | 119 ++++++++++++++++++++
 3 files changed, 128 insertions(+)
 create mode 100644 cmd/git-worktree-manager/gen_versioninfo.go

diff --git a/.gitignore b/.gitignore
index 4090114..6b81963 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,5 +22,9 @@ node_modules/
 .DS_Store
 Thumbs.db
 
+# Windows build resources (generated)
+cmd/git-worktree-manager/versioninfo.json
+cmd/git-worktree-manager/resource_windows.syso
+
 # Local Claude Settings (machine-specific; skills are tracked separately)
 .claude/settings.local.json
diff --git a/.goreleaser.yml b/.goreleaser.yml
index 6bdead2..f94905a 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -4,6 +4,7 @@ before:
   hooks:
     - go mod tidy
     - go test ./...
+    - go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@latest
 
 builds:
   - id: gwtm
@@ -18,6 +19,10 @@ builds:
     goarch:
       - amd64
       - arm64
+    hooks:
+      pre:
+        - cmd: go run ./cmd/git-worktree-manager/gen_versioninfo.go {{ .Version }}
+        - cmd: goversioninfo -64 -o cmd/git-worktree-manager/resource_windows.syso cmd/git-worktree-manager/versioninfo.json
     ldflags:
       - -s -w
       - -X main.version={{.Version}}
diff --git a/cmd/git-worktree-manager/gen_versioninfo.go b/cmd/git-worktree-manager/gen_versioninfo.go
new file mode 100644
index 0000000..ce2fee4
--- /dev/null
+++ b/cmd/git-worktree-manager/gen_versioninfo.go
@@ -0,0 +1,119 @@
+//go:build ignore
+
+// gen_versioninfo.go generates versioninfo.json for goversioninfo.
+// Usage: go run ./cmd/git-worktree-manager/gen_versioninfo.go <version>
+// Example: go run ./cmd/git-worktree-manager/gen_versioninfo.go 2.1.0
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type FixedFileInfo struct {
+	FileVersion    [4]uint16 `json:"FileVersion"`
+	ProductVersion [4]uint16 `json:"ProductVersion"`
+	FileFlagsMask  string    `json:"FileFlagsMask"`
+	FileFlags      string    `json:"FileFlags"`
+	FileOS         string    `json:"FileOS"`
+	FileType       string    `json:"FileType"`
+	FileSubType    string    `json:"FileSubType"`
+}
+
+type StringFileInfo struct {
+	Comments         string `json:"Comments"`
+	CompanyName      string `json:"CompanyName"`
+	FileDescription  string `json:"FileDescription"`
+	FileVersion      string `json:"FileVersion"`
+	InternalName     string `json:"InternalName"`
+	LegalCopyright   string `json:"LegalCopyright"`
+	LegalTrademarks  string `json:"LegalTrademarks"`
+	OriginalFilename string `json:"OriginalFilename"`
+	PrivateBuild     string `json:"PrivateBuild"`
+	ProductName      string `json:"ProductName"`
+	ProductVersion   string `json:"ProductVersion"`
+	SpecialBuild     string `json:"SpecialBuild"`
+}
+
+type Translation struct {
+	LangID    string `json:"LangID"`
+	CharsetID string `json:"CharsetID"`
+}
+
+type VarFileInfo struct {
+	Translation Translation `json:"Translation"`
+}
+
+type VersionInfo struct {
+	FixedFileInfo  FixedFileInfo  `json:"FixedFileInfo"`
+	StringFileInfo StringFileInfo `json:"StringFileInfo"`
+	VarFileInfo    VarFileInfo    `json:"VarFileInfo"`
+	IconPath       string         `json:"IconPath"`
+	ManifestPath   string         `json:"ManifestPath"`
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprintln(os.Stderr, "usage: gen_versioninfo.go <version>")
+		os.Exit(1)
+	}
+
+	ver := strings.TrimPrefix(os.Args[1], "v")
+	parts := strings.Split(ver, ".")
+	if len(parts) < 3 {
+		fmt.Fprintf(os.Stderr, "invalid version %q: expected Major.Minor.Patch\n", ver)
+		os.Exit(1)
+	}
+
+	major, _ := strconv.ParseUint(parts[0], 10, 16)
+	minor, _ := strconv.ParseUint(parts[1], 10, 16)
+	patch, _ := strconv.ParseUint(parts[2], 10, 16)
+
+	fileVer := fmt.Sprintf("%d.%d.%d.0", major, minor, patch)
+	prodVer := fmt.Sprintf("%d.%d.%d", major, minor, patch)
+
+	vi := VersionInfo{
+		FixedFileInfo: FixedFileInfo{
+			FileVersion:    [4]uint16{uint16(major), uint16(minor), uint16(patch), 0},
+			ProductVersion: [4]uint16{uint16(major), uint16(minor), uint16(patch), 0},
+			FileFlagsMask:  "3f",
+			FileFlags:      "00",
+			FileOS:         "040004",
+			FileType:       "01",
+			FileSubType:    "00",
+		},
+		StringFileInfo: StringFileInfo{
+			CompanyName:      "Lucas Modrich",
+			FileDescription:  "Git Worktree Manager",
+			FileVersion:      fileVer,
+			InternalName:     "gwtm",
+			LegalCopyright:   "Copyright \u00a9 2026 Lucas Modrich",
+			OriginalFilename: "gwtm.exe",
+			ProductName:      "gwtm",
+			ProductVersion:   prodVer,
+		},
+		VarFileInfo: VarFileInfo{
+			Translation: Translation{
+				LangID:    "0409",
+				CharsetID: "04B0",
+			},
+		},
+	}
+
+	data, err := json.MarshalIndent(vi, "", "  ")
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "json marshal error:", err)
+		os.Exit(1)
+	}
+
+	outPath := "cmd/git-worktree-manager/versioninfo.json"
+	if err := os.WriteFile(outPath, data, 0644); err != nil {
+		fmt.Fprintln(os.Stderr, "write error:", err)
+		os.Exit(1)
+	}
+
+	fmt.Println("wrote", outPath)
+}