signal backend, app cleanup

app/signalbot/cli.py

@@ -0,0 +1,54 @@
+import json
+import subprocess
+
+from django.conf import settings
+
+
+BASE_CMD = ['signal-cli', '-a', settings.SIGNAL_ACCOUNT, '--output=json']
+
+
+def send(msg, to=None, group=None):
+    cmd = BASE_CMD + [
+        'send', '--message-from-stdin'
+    ]
+    if group:
+        cmd += ['-g', group]
+    else:
+        cmd += [to]
+    r = subprocess.check_output(cmd, input=msg, encoding='utf-8')
+    response = []
+    if r:
+        for row in r.strip().split('\n'):
+            response.append(json.loads(row))
+    return response
+
+
+def send_reaction(target_address, target_ts, emoji, to=None, group=None, remove=False):
+    cmd = BASE_CMD + [
+        'sendReaction', '-t', str(target_ts), '-e', emoji,
+        '-a', target_address
+    ]
+    if remove:
+        cmd += ['-r']
+    if group:
+        cmd += ['-g', group]
+    else:
+        cmd += [to]
+    r = subprocess.check_output(cmd, encoding='utf-8')
+    response = []
+    if r:
+        for row in r.strip().split('\n'):
+            response.append(json.loads(row))
+    return response
+
+
+def receive(timeout=1):
+    cmd = BASE_CMD + [
+        'receive', '--timeout', str(timeout), '--send-read-receipts'
+    ]
+    r = subprocess.check_output(cmd, encoding='utf-8')
+    response = []
+    if r:
+        for row in r.strip().split('\n'):
+            response.append(json.loads(row))
+    return response