Initial Commit for testing

PKGBUILD

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+pkgname=matrix-status-bot
+pkgver=0.1.0
+pkgrel=1
+pkgdesc="Mirror a makerspace's open/closed state into a Matrix room name and avatar"
+arch=(any)
+license=(MIT)
+depends=(python)
+backup=(etc/matrix-status-bot.conf)
+source=(status.py
+        matrix-status-bot.service
+        matrix-status-bot-set@.service
+        matrix-status-bot.conf)
+sha256sums=('42b130bfd22dad0ab03335b4774db4a9413581bc8e4e21792228c88a6bf61f30'
+            '019a9b6a728cc1bb0a9f674c3cbbd9b2b561d6d40355bdb80413f7ab9e6f55d7'
+            '9fbfb7f67f7eb747c638749da99fa1f3c356c765ae228e6f9605028ee7673a6b'
+            'c53c003089c47087efd24a1d9abcf8b1bd69e391f58093a45a18a6370c3784f6')
+
+package() {
+  install -Dm755 status.py "$pkgdir/usr/bin/matrix-status-bot"
+  install -Dm644 -t "$pkgdir/usr/lib/systemd/system" \
+    matrix-status-bot.service matrix-status-bot-set@.service
+  install -Dm600 matrix-status-bot.conf "$pkgdir/etc/matrix-status-bot.conf"
+}

matrix-status-bot-set@.service

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+[Unit]
+Description=Set Matrix makerspace status to %i
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=oneshot
+EnvironmentFile=/etc/matrix-status-bot.conf
+ExecStart=/usr/bin/matrix-status-bot %i
+DynamicUser=yes

matrix-status-bot.conf

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+# matrix-status-bot configuration (read by systemd as root; keep mode 600)
+MATRIX_HS=https://matrix.example.org
+MATRIX_TOKEN=
+MATRIX_ROOM=!roomid:example.org
+
+# Used by matrix-status-bot.service (polling mode)
+SPACEAPI_URL=https://example.org/spaceapi.json
+POLL_INTERVAL=60
+
+# Optional
+#NAME_OPEN=🟢 Space is open
+#NAME_CLOSED=🔴 Space is closed
+#AVATAR_OPEN=mxc://example.org/green
+#AVATAR_CLOSED=mxc://example.org/red

matrix-status-bot.service

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+[Unit]
+Description=Matrix makerspace status bot (SpaceAPI -> room name/avatar)
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+EnvironmentFile=/etc/matrix-status-bot.conf
+ExecStart=/usr/bin/matrix-status-bot --spaceapi $SPACEAPI_URL $POLL_INTERVAL
+Restart=on-failure
+RestartSec=30
+DynamicUser=yes
+ProtectHome=yes
+PrivateDevices=yes
+CapabilityBoundingSet=
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+SystemCallFilter=@system-service
+
+[Install]
+WantedBy=multi-user.target

status.py

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+#!/usr/bin/env python3
+"""Minimal Matrix status-room bot: mirrors open/closed into a room's name (and avatar).
+
+Usage:
+  status.py open|closed            set once (door switch, button, cron, ...)
+  status.py --spaceapi URL [SECS]  poll a SpaceAPI endpoint every SECS seconds (default 60)
+
+Env:      MATRIX_HS (https://matrix.example.org), MATRIX_TOKEN, MATRIX_ROOM (!id:server)
+Optional: NAME_OPEN / NAME_CLOSED, AVATAR_OPEN / AVATAR_CLOSED (mxc:// URIs)
+"""
+import json, os, sys, time, urllib.error, urllib.parse, urllib.request
+
+HS, TOKEN, ROOM = (os.environ[k] for k in ("MATRIX_HS", "MATRIX_TOKEN", "MATRIX_ROOM"))
+NAMES = {True: os.getenv("NAME_OPEN", "🟢 Space is open"), False: os.getenv("NAME_CLOSED", "🔴 Space is closed")}
+AVATARS = {True: os.getenv("AVATAR_OPEN"), False: os.getenv("AVATAR_CLOSED")}
+
+
+def state(method, event_type, body=None):
+    url = f"{HS.rstrip('/')}/_matrix/client/v3/rooms/{urllib.parse.quote(ROOM, safe='')}/state/{event_type}"
+    req = urllib.request.Request(url, method=method, data=body and json.dumps(body).encode(),
+                                 headers={"Authorization": f"Bearer {TOKEN}", "Content-Type": "application/json"})
+    with urllib.request.urlopen(req, timeout=10) as r:
+        return json.load(r)
+
+
+def set_status(is_open):
+    try:
+        if state("GET", "m.room.name").get("name") == NAMES[is_open]:
+            return  # unchanged: don't add a "changed the room name" line
+    except urllib.error.HTTPError as e:
+        if e.code != 404:  # 404 = room has no name yet
+            raise
+    state("PUT", "m.room.name", {"name": NAMES[is_open]})
+    if AVATARS[is_open]:
+        state("PUT", "m.room.avatar", {"url": AVATARS[is_open]})
+
+
+if __name__ == "__main__":
+    args = sys.argv[1:]
+    if args in (["open"], ["closed"]):
+        set_status(args[0] == "open")
+    elif args[:1] == ["--spaceapi"] and len(args) in (2, 3):
+        last = None
+        while True:
+            try:
+                with urllib.request.urlopen(args[1], timeout=10) as r:
+                    is_open = bool(json.load(r)["state"]["open"])
+                if is_open != last:
+                    set_status(is_open)
+                    last = is_open
+            except Exception as e:
+                print("error:", e, file=sys.stderr)
+            time.sleep(int(args[2]) if len(args) == 3 else 60)
+    else:
+        sys.exit(__doc__)