Fix #3: Add python echo server - download file

.dockerignore

@@ -0,0 +1,38 @@
+tokens
+files
+venv
+
+# compiled output
+/dist
+/node_modules
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json

README.md

@@ -98,6 +98,8 @@ docker run -it -v `pwd`/tokens:/app/tokens --network=host -e WHATSAPP_HOOK_ONMES
 
 Now go ahead, open the second whatsapp and send to our WhatsApp HTTP API a text message! It must reply the same text.
 
+If you try to send an image the "echo server" will send a path to the downloaded file.
+
 # Environment variables
 
 ## Common

examples/echo.py

@@ -17,13 +17,22 @@ def whatsapp_webhook():
     data = request.get_json()
     pprint(data)
     # The text
-    body = data['body']
+    text = data["body"]
     # Number in format 791111111@c.us
-    from_ = data['from']
+    from_ = data["from"]
+
+    if data.get("clientUrl", None):
+        # Download file and set text to path
+        client_url = data["clientUrl"]
+        filename = client_url.split("/")[-1]
+        path = "/tmp/" + filename
+        r = requests.get(client_url)
+        open(path, "wb").write(r.content)
+        text = f"We have downloaded file here: {path}"
+
     # Send a text back via WhatsApp HTTP API
-    response = requests.post('http://localhost:3000/api/sendText', json={
-        "chatId": from_,
-        "text": body
-    })
+    response = requests.post(
+        "http://localhost:3000/api/sendText", json={"chatId": from_, "text": text}
+    )
     response.raise_for_status()
     return "OK"