add static peer formatting for client config

tests/test_app.py

@@ -1,3 +1,6 @@
-def test_true():
+from vpn_manager import *
-    assert True
 
+def test_format_static_peer():
+    sp = StaticPeer('sample-public-key', '127.0.0.1', '12345')
+    peer_section = format_static_peer(sp, '0.0.0.0/0')
+    assert peer_section == '[Peer]\nPublicKey = sample-public-key\nAllowedIPs = 0.0.0.0/0\nEndpoint = 127.0.0.1:12345\nPersistentKeepAlive = 30'

vpn_manager/__init__.py

@@ -0,0 +1,2 @@
+from .__main__ import *
+

vpn_manager/__main__.py

@@ -1,3 +1,21 @@
+from dataclasses import dataclass
+
+@dataclass
+class StaticPeer:
+    public_key: str
+    endpoint: str
+    port: str
+
+
+def format_static_peer(static_peer, routes, keepalive=30):
+    return f'''[Peer]
+PublicKey = {static_peer.public_key}
+AllowedIPs = {routes}
+Endpoint = {static_peer.endpoint}:{static_peer.port}
+PersistentKeepAlive = {keepalive}'''
+    
+
+
 def main():
     print("run")