feat: ConvertGUI v2.0 (Wails + preview/trim + NSIS + Gitea CI)

internal/media/bin.go

@@ -0,0 +1,84 @@
+package media
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+)
+
+type Binaries struct {
+	FFmpeg  string `json:"ffmpeg"`
+	FFprobe string `json:"ffprobe"`
+	Source  string `json:"source"` // "custom", "bundled", "path", "winget", "missing"
+}
+
+func FindBinaries(customFFmpeg, customFFprobe string) Binaries {
+	exeName := func(base string) string {
+		if runtime.GOOS == "windows" {
+			return base + ".exe"
+		}
+		return base
+	}
+
+	ff := findSingle(exeName("ffmpeg"), customFFmpeg)
+	fp := findSingle(exeName("ffprobe"), customFFprobe)
+
+	source := "missing"
+	if ff.path != "" && fp.path != "" {
+		source = ff.source
+	} else if ff.path != "" || fp.path != "" {
+		if ff.path != "" {
+			source = ff.source
+		} else {
+			source = fp.source
+		}
+	}
+
+	return Binaries{
+		FFmpeg:  ff.path,
+		FFprobe: fp.path,
+		Source:  source,
+	}
+}
+
+type foundBin struct {
+	path   string
+	source string
+}
+
+func findSingle(exeName, custom string) foundBin {
+	if custom != "" {
+		if st, err := os.Stat(custom); err == nil && !st.IsDir() {
+			return foundBin{path: custom, source: "custom"}
+		}
+	}
+
+	if exePath, err := os.Executable(); err == nil {
+		dir := filepath.Dir(exePath)
+		candidates := []string{
+			filepath.Join(dir, "bin", exeName),
+			filepath.Join(dir, exeName),
+		}
+		for _, c := range candidates {
+			if st, err := os.Stat(c); err == nil && !st.IsDir() {
+				return foundBin{path: c, source: "bundled"}
+			}
+		}
+	}
+
+	if p, err := exec.LookPath(exeName); err == nil {
+		return foundBin{path: p, source: "path"}
+	}
+
+	if runtime.GOOS == "windows" {
+		if localAppData := os.Getenv("LOCALAPPDATA"); localAppData != "" {
+			wg := filepath.Join(localAppData, "Microsoft", "WinGet", "Links", exeName)
+			if st, err := os.Stat(wg); err == nil && !st.IsDir() {
+				return foundBin{path: wg, source: "winget"}
+			}
+		}
+	}
+
+	return foundBin{}
+}