Initial commit

.gitignore

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+node_modules/
+.env
+*.log
+.DS_Store
+

README.md

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+# Screenshot Server
+
+Tiny HTTP server that serves the latest screenshot from ~/Desktop, then deletes it.
+
+## Build (on Mac)
+
+```bash
+cd /path/to/screenshot-server
+go build -o screenshot-server
+```
+
+## Install as service
+
+```bash
+# Copy binary
+sudo cp screenshot-server /usr/local/bin/
+
+# Install launchd service
+cp com.inou.screenshot-server.plist ~/Library/LaunchAgents/
+
+# Start it
+launchctl load ~/Library/LaunchAgents/com.inou.screenshot-server.plist
+
+# Check status
+launchctl list | grep screenshot
+```
+
+## Usage
+
+Take a screenshot (Cmd+Shift+4), then:
+
+```bash
+curl http://192.168.1.14:9123/screenshot -o screenshot.png
+```
+
+## Endpoints
+
+- `GET /screenshot` - Returns latest screenshot PNG, then deletes it
+- `GET /health` - Returns "ok"
+
+## Uninstall
+
+```bash
+launchctl unload ~/Library/LaunchAgents/com.inou.screenshot-server.plist
+rm ~/Library/LaunchAgents/com.inou.screenshot-server.plist
+sudo rm /usr/local/bin/screenshot-server
+```
+
+## Logs
+
+```bash
+tail -f /tmp/screenshot-server.log
+```

com.inou.screenshot-server.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>Label</key>
+    <string>com.inou.screenshot-server</string>
+    <key>ProgramArguments</key>
+    <array>
+        <string>/usr/local/bin/screenshot-server</string>
+    </array>
+    <key>RunAtLoad</key>
+    <true/>
+    <key>KeepAlive</key>
+    <true/>
+    <key>StandardOutPath</key>
+    <string>/tmp/screenshot-server.log</string>
+    <key>StandardErrorPath</key>
+    <string>/tmp/screenshot-server.log</string>
+</dict>
+</plist>

main.go

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