118 lines
2.6 KiB
Go
118 lines
2.6 KiB
Go
// screenshot-server: Serves the latest screenshot from ~/Desktop, then deletes it
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// Run: go build -o screenshot-server && ./screenshot-server
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// Fetch: curl http://mac-ip:9123/screenshot -o screenshot.png
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package main
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import (
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"fmt"
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"io"
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"log"
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"net/http"
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"os"
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"path/filepath"
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"sort"
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"strings"
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)
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const (
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port = ":9123"
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desktopDir = "" // Will be set to ~/Desktop
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)
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func getDesktopPath() string {
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home, err := os.UserHomeDir()
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if err != nil {
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log.Fatal("Cannot find home directory:", err)
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}
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return filepath.Join(home, "Desktop")
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}
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func findLatestScreenshot(desktop string) (string, error) {
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entries, err := os.ReadDir(desktop)
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if err != nil {
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return "", err
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}
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var screenshots []os.DirEntry
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for _, e := range entries {
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name := e.Name()
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if strings.HasPrefix(name, "Screenshot") && strings.HasSuffix(name, ".png") {
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screenshots = append(screenshots, e)
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}
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}
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if len(screenshots) == 0 {
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return "", fmt.Errorf("no screenshots found")
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}
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// Sort by modification time (newest first)
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sort.Slice(screenshots, func(i, j int) bool {
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infoI, _ := screenshots[i].Info()
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infoJ, _ := screenshots[j].Info()
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return infoI.ModTime().After(infoJ.ModTime())
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})
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return filepath.Join(desktop, screenshots[0].Name()), nil
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}
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func screenshotHandler(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "GET only", http.StatusMethodNotAllowed)
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return
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}
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desktop := getDesktopPath()
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path, err := findLatestScreenshot(desktop)
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if err != nil {
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http.Error(w, err.Error(), http.StatusNotFound)
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log.Println("No screenshot:", err)
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return
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}
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// Open and serve
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f, err := os.Open(path)
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if err != nil {
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http.Error(w, "Cannot open file", http.StatusInternalServerError)
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return
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}
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defer f.Close()
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filename := filepath.Base(path)
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w.Header().Set("Content-Type", "image/png")
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w.Header().Set("X-Screenshot-Name", filename)
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_, err = io.Copy(w, f)
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if err != nil {
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log.Println("Error sending:", err)
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return
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}
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// Delete after successful send
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f.Close()
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if err := os.Remove(path); err != nil {
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log.Println("Warning: could not delete:", err)
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} else {
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log.Println("Served and deleted:", filename)
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}
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}
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func healthHandler(w http.ResponseWriter, r *http.Request) {
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w.Write([]byte("ok"))
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}
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func main() {
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http.HandleFunc("/screenshot", screenshotHandler)
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http.HandleFunc("/health", healthHandler)
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log.Printf("Screenshot server starting on %s", port)
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log.Printf("Desktop: %s", getDesktopPath())
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log.Printf("Endpoints:")
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log.Printf(" GET /screenshot - fetch & delete latest screenshot")
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log.Printf(" GET /health - health check")
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if err := http.ListenAndServe(port, nil); err != nil {
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log.Fatal(err)
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}
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}
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