[core] Add 'packages' to the config (#5140)

* Initial

* Merge dicts and lists

* feedback

* Move to homeassistant

* feedback

* increase_coverage

* kick_the_hound

script/inspect_schemas.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+"""Inspect all component SCHEMAS."""
+import os
+import importlib
+import pkgutil
+
+from homeassistant.config import _identify_config_schema
+from homeassistant.scripts.check_config import color
+
+
+def explore_module(package):
+    """Explore the modules."""
+    module = importlib.import_module(package)
+    if not hasattr(module, '__path__'):
+        return []
+    for _, name, _ in pkgutil.iter_modules(module.__path__, package + '.'):
+        yield name
+
+
+def main():
+    """Main section of the script."""
+    if not os.path.isfile('requirements_all.txt'):
+        print('Run this from HA root dir')
+        return
+
+    msg = {}
+
+    def add_msg(key, item):
+        """Add a message."""
+        if key not in msg:
+            msg[key] = []
+        msg[key].append(item)
+
+    for package in explore_module('homeassistant.components'):
+        module = importlib.import_module(package)
+        module_name = getattr(module, 'DOMAIN', module.__name__)
+
+        if hasattr(module, 'PLATFORM_SCHEMA'):
+            if hasattr(module, 'CONFIG_SCHEMA'):
+                add_msg('WARNING', "Module {} contains PLATFORM and CONFIG "
+                        "schemas".format(module_name))
+            add_msg('PLATFORM SCHEMA', module_name)
+            continue
+
+        if not hasattr(module, 'CONFIG_SCHEMA'):
+            add_msg('NO SCHEMA', module_name)
+            continue
+
+        schema_type, schema = _identify_config_schema(module)
+
+        add_msg("CONFIG_SCHEMA " + schema_type, module_name + ' ' +
+                color('cyan', str(schema)[:60]))
+
+    for key in sorted(msg):
+        print("\n{}\n - {}".format(key, '\n - '.join(msg[key])))
+
+
+if __name__ == '__main__':
+    main()