diff --git a/server.py b/server.py
index e760966..6540cd4 100644
--- a/server.py
+++ b/server.py
@@ -1,8 +1,60 @@
-from flask import Flask, render_template, jsonify, send_file
+import os
+from flask import Blueprint, Flask, render_template, jsonify, send_file, request
+
+default_image_path = "./static/photo.jpg"
+image_path = ""
+state = "put"
+trash_type = ""
+
+api = Blueprint('api', __name__)
+
+# 放下垃圾
+@api.route("/putdown")
+def putdown():
+    global state
+    state = "camera"
+
+    return "ok"
+    
+# 拍好照
+@api.route("/pic")
+def pic():
+    global state, image_path
+
+    path = request.args.get("path")
+    if not path or not os.path.isfile(path):
+        return "sad", 400
+
+    image_path = path
+    state = "identify"
+
+    return "ok"
+
+# 辨識好
+@api.route("/result")
+def result():
+    global state, trash_type
+
+    trash = request.args.get("type")
+    if not trash:
+        return "sad", 400
+
+    trash_type = trash
+    state = "identified"
+
+    return "ok"
+
+# 準備好下一個
+@api.route("/ready")
+def ready():
+    global state
+
+    state = "put"
+
+    return "ok"
 
 app = Flask(__name__)
-
-imagePath = "./static/photo.jpg"
+app.register_blueprint(api, url_prefix="/api")
 
 @app.route("/")
 def index():
@@ -11,19 +63,20 @@ def index():
 @app.route("/poll")
 def poll():
     data = {
-        "state": "camera"
+        "state": state
     }
 
+    if state == "identified":
+        data |= {"type": trash_type}
+
     return jsonify(data)
 
 @app.route("/photo")
 def photo():
-    return send_file(imagePath)
+    if not image_path:
+        return send_file(default_image_path)
 
-# 放下垃圾
-# 拍好照
-# 辨識好
-# 準備好下一個
+    return send_file(image_path)
 
 if __name__ == "__main__":
     app.run(debug=True)
\ No newline at end of file