error handling for curl

kukuc-clock.py

@@ -12,6 +12,7 @@ else:
 
 TTS_API_URL = "https://tts.virtonline.eu/api/tts"
 BUTTON_TIMEOUT = 30  # button release timeout terminates playing
+FILENAME = "presny_cas.wav"
 PIN = 27  # listen to changes on this GPIO pin
 GPIO.setmode(GPIO.BCM)  # use BCM pin layout
 GPIO.setwarnings(False)
@@ -29,8 +30,8 @@ def terminate_playing(proc):
 
 
 def play_presny_cas():
-    print("Playing presny_cas.wav")
-    proc = subprocess.Popen(["aplay", "presny_cas.wav"])
+    print(f"Playing {FILENAME}")
+    proc = subprocess.Popen(["aplay", FILENAME])
     wait_for_button_release_or_timeout(PIN, BUTTON_TIMEOUT)
     print("GPIO went HIGH - terminating playing")
     terminate_playing(proc)
@@ -51,23 +52,32 @@ def get_credentials():
 
 def generate_presny_cas():
     text = get_datetime_as_slovak_sentence(datetime.now())
-    print(f"Generating presny_cas.wav for '{text}' using a remote API call")
+    print(f"Calling remote TTS API for '{text}'")
     username, password = get_credentials()
-    subprocess.call(
-        [
-            "curl",
-            "--silent",
-            "-u",
-            f"{username}:{password}",
-            "--get",
-            "--data-urlencode",
-            f"text={text}",
-            TTS_API_URL,
-            "--output",
-            "presny_cas.wav",
-        ]
+    command = [
+        "curl",
+        "-s",
+        "-w",
+        "%{http_code}",
+        "-u",
+        f"{username}:{password}",
+        "--get",
+        "--data-urlencode",
+        f"text={text}",
+        TTS_API_URL,
+        "--output",
+        FILENAME,
+    ]
+    # print(f"Executing: {' '.join(command)}")
+    result = subprocess.run(
+        command,
+        check=True,
+        capture_output=True,
+        text=True,
     )
-    print("Generated presny_cas.wav")
+    if result.stdout != "200":
+        raise Exception(f"API call failed with status code {result.stdout}")
+    print(f"Generated {FILENAME}")
 
 
 def wait_for_button_release_or_timeout(pin, timeout):