transform the API json into a usable datastructure

* index by room_id and recursively build the Space hierarchy
* not proper tail recursion, and uses a global variable for now
* FlightGear Republic is both child and parent of FlightGear and JSBSim
* as proof of concept, print out the room name at correct depth

script.py

@@ -1,10 +1,28 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: CC0-1.0
+
 from mako.template import Template
 import json
-import itertools
-import argparse
 
-appTemplate = Template(filename='./spaces.html')
-f = open('libregamingspaces.json')
-spaces=json.load(f)
+def render(spaces, template):
+    appTemplate = Template(filename=template)
+    print(appTemplate.render(s=spaces))
 
-print(appTemplate.render(s=spaces))
+def make_hierarchy(room, loops, depth=0):
+    try:
+        print('  ' * depth + '- ' + room['name'])
+        if room['children_state'] and room['room_id'] not in loops:
+            for child in room['children_state']:
+                make_hierarchy(ROOMS[child['state_key']], loops, depth+1)
+
+    except:
+        # missing or no name
+        print('  ' * depth + '  Skip ' + room['room_id'])
+
+if __name__ == '__main__':
+    with open('libregamingspaces.json') as f:
+        data = json.load(f)
+
+    # render(data, './spaces.html')
+    ROOMS = {room['room_id'] : room for room in data}
+    make_hierarchy(ROOMS['!IdUUdKALNzBLKEjvbP:matrix.org'], ['!JTpfWshTKZpZiUASvP:hacklab.fi'])