image cad area size

python-cad-area/app.py

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+from flask import Flask, request, jsonify
+from flask_cors import CORS
+import traceback
+
+from cad_vector_area import calculate_pdf_vector_area
+
+app = Flask(__name__)
+CORS(app)
+
+
+@app.route("/health", methods=["GET"])
+def health():
+    return jsonify({
+        "success": True,
+        "message": "Python CAD Area service is running"
+    })
+
+
+@app.route("/calculate", methods=["POST"])
+def calculate():
+    try:
+        if "file" not in request.files:
+            return jsonify({
+                "success": False,
+                "message": "No PDF file received"
+            }), 400
+
+        uploaded_file = request.files["file"]
+
+        if uploaded_file.filename == "":
+            return jsonify({
+                "success": False,
+                "message": "Empty filename"
+            }), 400
+
+        if not uploaded_file.filename.lower().endswith(".pdf"):
+            return jsonify({
+                "success": False,
+                "message": "Only PDF files are allowed"
+            }), 400
+
+        pdf_bytes = uploaded_file.read()
+
+        scale_ratio = request.form.get("scale_ratio", "1")
+
+        try:
+            scale_ratio = float(scale_ratio)
+            if scale_ratio <= 0:
+                scale_ratio = 1.0
+        except ValueError:
+            scale_ratio = 1.0
+
+        result = calculate_pdf_vector_area(
+            pdf_bytes=pdf_bytes,
+            filename=uploaded_file.filename,
+            scale_ratio=scale_ratio
+        )
+
+        status_code = 200 if result.get("success") else 422
+
+        return jsonify(result), status_code
+
+    except Exception as e:
+        return jsonify({
+            "success": False,
+            "message": str(e),
+            "trace": traceback.format_exc()
+        }), 500
+
+
+if __name__ == "__main__":
+    app.run(
+        host="127.0.0.1",
+        port=5055,
+        debug=True
+    )