feat(telegram): new Telegram bot alerting integration

Telegram Bot API, 5 commands: send message, send photo, get chat, get updates.
Bot-token auth, stdlib-only.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

integrations/telegram/scripts/get_chat.py

@@ -0,0 +1,57 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def _base(cfg):
+    return "https://api.telegram.org/bot" + str(cfg.get("bot_token", ""))
+
+
+def call(method_name, cfg, body=None, params=None, http="POST"):
+    url = _base(cfg) + "/" + method_name
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=http)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        resp = json.loads(r.read() or "{}")
+    if not resp.get("ok"):
+        raise Exception("Telegram error: " + json.dumps(resp))
+    return resp
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+_chat = lambda cfg, inputs: (inputs.get("chat_id") or cfg.get("default_chat_id"))
+
+
+def main(cfg, inputs):
+    chat = _chat(cfg, inputs)
+    if not chat:
+        raise Exception("chat_id is required (set a default or pass one)")
+
+    resp = call("getChat", cfg, params={"chat_id": chat}, http="GET")
+    return resp
+
+
+_run(main)

integrations/telegram/scripts/get_updates.py

@@ -0,0 +1,60 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def _base(cfg):
+    return "https://api.telegram.org/bot" + str(cfg.get("bot_token", ""))
+
+
+def call(method_name, cfg, body=None, params=None, http="POST"):
+    url = _base(cfg) + "/" + method_name
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=http)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        resp = json.loads(r.read() or "{}")
+    if not resp.get("ok"):
+        raise Exception("Telegram error: " + json.dumps(resp))
+    return resp
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+_chat = lambda cfg, inputs: (inputs.get("chat_id") or cfg.get("default_chat_id"))
+
+
+def main(cfg, inputs):
+    limit = inputs.get("limit")
+    offset = inputs.get("offset")
+
+    params = {"limit": int(limit or 20)}
+    if offset not in (None, ""):
+        params["offset"] = int(offset)
+
+    resp = call("getUpdates", cfg, params=params, http="GET")
+    return resp
+
+
+_run(main)

integrations/telegram/scripts/send_message.py

@@ -0,0 +1,67 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def _base(cfg):
+    return "https://api.telegram.org/bot" + str(cfg.get("bot_token", ""))
+
+
+def call(method_name, cfg, body=None, params=None, http="POST"):
+    url = _base(cfg) + "/" + method_name
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=http)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        resp = json.loads(r.read() or "{}")
+    if not resp.get("ok"):
+        raise Exception("Telegram error: " + json.dumps(resp))
+    return resp
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+_chat = lambda cfg, inputs: (inputs.get("chat_id") or cfg.get("default_chat_id"))
+
+
+def main(cfg, inputs):
+    chat = _chat(cfg, inputs)
+    if not chat:
+        raise Exception("chat_id is required (set a default or pass one)")
+
+    text = inputs.get("text")
+    if not text:
+        raise Exception("text is required")
+
+    parse_mode = inputs.get("parse_mode")
+
+    body = {"chat_id": chat, "text": text}
+    if parse_mode:
+        body["parse_mode"] = parse_mode
+
+    resp = call("sendMessage", cfg, body=body)
+    return resp
+
+
+_run(main)

integrations/telegram/scripts/send_photo.py

@@ -0,0 +1,67 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def _base(cfg):
+    return "https://api.telegram.org/bot" + str(cfg.get("bot_token", ""))
+
+
+def call(method_name, cfg, body=None, params=None, http="POST"):
+    url = _base(cfg) + "/" + method_name
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=http)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        resp = json.loads(r.read() or "{}")
+    if not resp.get("ok"):
+        raise Exception("Telegram error: " + json.dumps(resp))
+    return resp
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+_chat = lambda cfg, inputs: (inputs.get("chat_id") or cfg.get("default_chat_id"))
+
+
+def main(cfg, inputs):
+    chat = _chat(cfg, inputs)
+    if not chat:
+        raise Exception("chat_id is required (set a default or pass one)")
+
+    photo = inputs.get("photo")
+    if not photo:
+        raise Exception("photo is required")
+
+    caption = inputs.get("caption")
+
+    body = {"chat_id": chat, "photo": photo}
+    if caption:
+        body["caption"] = caption
+
+    resp = call("sendPhoto", cfg, body=body)
+    return resp
+
+
+_run(main)

integrations/telegram/scripts/test_connection.py

@@ -0,0 +1,53 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def _base(cfg):
+    return "https://api.telegram.org/bot" + str(cfg.get("bot_token", ""))
+
+
+def call(method_name, cfg, body=None, params=None, http="POST"):
+    url = _base(cfg) + "/" + method_name
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=http)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        resp = json.loads(r.read() or "{}")
+    if not resp.get("ok"):
+        raise Exception("Telegram error: " + json.dumps(resp))
+    return resp
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+_chat = lambda cfg, inputs: (inputs.get("chat_id") or cfg.get("default_chat_id"))
+
+
+def main(cfg, inputs):
+    resp = call("getMe", cfg, http="GET")
+    return {"ok": True, "bot": resp.get("result", {}).get("username")}
+
+
+_run(main)