refactor: move each inverter in a separate file (#63)

* remove redundant inverter mapping methods
* split up test data into multiple files

solax/__init__.py

@@ -5,7 +5,7 @@
 
 import async_timeout
 
-from solax import inverter
+from solax.discovery import discover
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -34,7 +34,7 @@ async def rt_request(inv, retry, t_wait=0):
 
 
 async def real_time_api(ip_address, port=80, pwd=''):
-    i = await inverter.discover(ip_address, port, pwd)
+    i = await discover(ip_address, port, pwd)
     return RealTimeAPI(i)
 
 

solax/discovery.py

@@ -0,0 +1,30 @@
+
+from solax.inverter import Inverter, InverterError
+from solax.inverters import XHybrid, X3, X3V34, X1, X1Mini, X1MiniV34,\
+     X1Smart, QVOLTHYBG33P
+
+# registry of inverters
+REGISTRY = [XHybrid, X3, X3V34, X1, X1Mini, X1MiniV34, X1Smart,
+            QVOLTHYBG33P]
+
+
+class DiscoveryError(Exception):
+    """Raised when unable to discover inverter"""
+
+
+async def discover(host, port, pwd='') -> Inverter:
+    failures = []
+    for inverter in REGISTRY:
+        i = inverter(host, port, pwd)
+        try:
+            await i.get_data()
+            return i
+        except InverterError as ex:
+            failures.append(ex)
+    msg = (
+        "Unable to connect to the inverter at "
+        f"host={host} port={port}, or your inverter is not supported yet.\n"
+        "Please see https://github.com/squishykid/solax/wiki/DiscoveryError\n"
+        f"Failures={str(failures)}"
+    )
+    raise DiscoveryError(msg)