contrib: JSON snippet generator for i3bar

contrib/i3bar-snippet.py

@@ -0,0 +1,110 @@
+#!/usr/bin/python3
+
+# This script queries the Travelynx API if you are checked into a train. If
+# yes, marudor.de is additionally queried for the next stop, and a JSON object
+# like this is written to stdout:
+# {"full_text": "RE26824, next: D\u00fcren at <span fgcolor=\"#ff0000\">15:38+5</span>, dest: Aachen Hbf at <span fgcolor=\"#ff0000\">16:07+5</span>", "markup": "pango"},
+# The script then exits.
+#
+# Configuration:
+# - Place your API key from https://travelynx.de/account at
+#   ~/.config/travelynx.conf .
+# - Then integrate into whatever generates your i3bar input.
+# - Make sure you use i3bar with a  pango font, so that the color tags are
+#   picked up.
+
+
+from datetime import datetime
+import dateutil
+import dateutil.parser
+import json
+from pathlib import Path
+import requests
+import sys
+import xdg  # not pyxdg!
+
+
+def format_stop(stop_name, scheduled_arrival_timestamp, delay):
+    color = "#ffffff"
+    if delay > 0:
+        if delay <= 2:
+            color = "#ffff00"
+        else:
+            color = "#ff0000"
+        delayStr = "{:+.0f}".format(delay)
+    else:
+        delayStr = ""
+    if isinstance(scheduled_arrival_timestamp, int):
+        scheduled_arrival_time = datetime.fromtimestamp(scheduled_arrival_timestamp)
+    else:
+        # We assume it's datetime already.
+        scheduled_arrival_time = scheduled_arrival_timestamp
+    return f'{stop_name} at <span fgcolor="{color}">{scheduled_arrival_time:%H:%M}{delayStr}</span>'
+
+
+api_key_path = Path(xdg.xdg_config_home(), "travelynx.conf")
+if api_key_path.exists():
+    with api_key_path.open("r") as f:
+        api_key = f.read().strip()
+else:
+    print(
+        f"Could not find Travelyxn API key at {api_key_path}.",
+        file=sys.stderr,
+    )
+    sys.exit(1)
+
+
+api_base = f"https://travelynx.de/api/v1/status/{api_key}"
+try:
+    res = requests.get(api_base)
+except requests.exceptions.ConnectionError:
+    print(
+        json.dumps({"full_text": "Could not connect to travelynx", "color": "#ff0000"})
+        + ","
+    )
+    sys.exit()
+
+j = res.json()
+# print(json.dumps(j, sort_keys=True, indent=4), file=sys.stderr)
+
+if not j["checkedIn"]:
+    sys.exit()
+
+out_fields = []
+
+train = "{}{}".format(j["train"]["type"], j["train"]["no"])
+out_fields.append(train)
+destination_name = j["toStation"]["name"]
+scheduled_arrival_timestamp = j["toStation"]["scheduledTime"]
+delay = (j["toStation"]["realTime"] - j["toStation"]["scheduledTime"]) / 60
+
+try:
+    details_res = requests.get(f"https://marudor.de/api/hafas/v2/details/{train}")
+    details = details_res.json()
+    # print(json.dumps(details, sort_keys=True, indent=4), file=sys.stderr)
+    next_stop_name = details["currentStop"]["station"]["title"]
+    if next_stop_name == destination_name:
+        out_fields.append("next")
+    else:
+        next_scheduled_arrival_time = dateutil.parser.isoparse(
+            details["currentStop"]["arrival"]["scheduledTime"]
+        )
+        next_scheduled_arrival_time = next_scheduled_arrival_time.astimezone(
+            dateutil.tz.tzlocal()
+        )
+        next_delay = details["currentStop"]["arrival"]["delay"]
+        out_fields.append(
+            "next: "
+            + format_stop(next_stop_name, next_scheduled_arrival_time, next_delay)
+        )
+except requests.exceptions.ConnectionError:
+    pass
+
+out_fields.append(
+    "dest: " + format_stop(destination_name, scheduled_arrival_timestamp, delay)
+)
+
+s = ", ".join(out_fields)
+
+out_obj = {"full_text": s, "markup": "pango"}
+print(json.dumps(out_obj) + ",")