From 4be95869b0863a62081fcc29a65b29eb896a7716 Mon Sep 17 00:00:00 2001
From: Sven Czarnian <devel@svcz.de>
Date: Mon, 15 Nov 2021 20:27:43 +0100
Subject: [PATCH] add the application file to run the complete system

---
 app.py | 136 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 app.py

diff --git a/app.py b/app.py
new file mode 100644
index 0000000..0b04076
--- /dev/null
+++ b/app.py
@@ -0,0 +1,136 @@
+#!/usr/bin/env python
+
+import json
+import os
+
+from flask import Flask, Response, request
+from json import JSONEncoder
+
+from aman.AMAN import AMAN
+from aman.config.AirportSequencing import AirportSequencing
+from aman.config.RunwaySequencing import RunwaySequencing
+
+class InboundEncoder(JSONEncoder):
+    def default(self, o):
+        pta = str(o.PlannedArrivalTime)
+        delimiter = pta.find('.')
+        if -1 == delimiter:
+            delimiter = pta.find('+')
+        return { 'callsign' : o.Callsign, 'fixed' : o.FixedSequence, 'runway' : o.PlannedRunway.Name, 'pta' : pta[0:delimiter] }
+
+class RunwaySequencingEncoder(JSONEncoder):
+    def default(self, o):
+        return { 'runway' : o.Runway.Name, 'spacing' : o.Spacing }
+
+os.environ['AMAN_CONFIG_PATH'] = 'C:\\Repositories\\VATSIM\\AMAN\\config'
+aman = AMAN()
+app = Flask('AMAN')
+
+if __name__ == '__main__':
+    app.run()
+
+@app.route('/aman/configuration/<icao>')
+def configuration(icao):
+    airport = aman.findAirport(icao.upper())
+    if None == airport:
+        return Response('{}', status=404, mimetype='application/json')
+
+    config = airport.SequencingConfiguration
+    dependencies = []
+    for dependency in config.RunwayDependencies:
+        rwy0 = config.runway(dependency[0])
+        rwy1 = config.runway(dependency[1])
+        cand1 = [ rwy0.Name, rwy1.Name ]
+        cand2 = [ rwy1.Name, rwy0.Name ]
+        found = False
+
+        for dep in dependencies:
+            if cand1 == dep or cand2 == dep:
+                found = True
+                break
+
+        if False == found:
+            dependencies.append(cand1)
+
+    dictionary = {
+        'airport' : airport.Icao,
+        'useMustShallMay' : config.UseMustShallMay,
+        'activeRunways' : config.ActiveArrivalRunways,
+        'dependentRunways' : dependencies
+    }
+    data = json.dumps(dictionary, ensure_ascii=True, cls=RunwaySequencingEncoder)
+    return Response(data, status=200, mimetype='application/json')
+
+@app.route('/aman/sequence/<icao>')
+def sequence(icao):
+    airport = aman.findAirport(icao.upper())
+    if None == airport:
+        return Response('{}', status=404, mimetype='application/json')
+
+    # convert the timestamp
+    stamp = str(airport.SequencingConfiguration.LastUpdateTimestamp)
+    delimiter = stamp.find('.')
+    if -1 == delimiter:
+        delimiter = stamp.find('+')
+
+    dictionary = {
+        'airport': airport.Icao,
+        'lastConfigurationUpdate': stamp[0:delimiter],
+        'sequence': airport.inboundSequence()
+    }
+    data = json.dumps(dictionary, ensure_ascii=True, cls=InboundEncoder)
+    return Response(data, status=200, mimetype='application/json')
+
+@app.route('/aman/configure', methods=['POST'])
+def configure():
+    data = request.get_json()
+
+    # validate that the airport exists
+    if 'airport' not in data:
+        return Response('{}', status=404, mimetype='application/json')
+    airport = aman.findAirport(data['airport'].upper())
+    if None == airport:
+        return Response('{}', status=404, mimetype='application/json')
+
+    # check that all top-level information are available
+    if 'useMustShallMay' not in data or 'activeRunways' not in data or 'dependentRunways' not in data:
+        return Response('{}', status=404, mimetype='application/json')
+    if False == isinstance(data['useMustShallMay'], bool) or 0 == len(data['activeRunways']):
+        return Response('{}', status=404, mimetype='application/json')
+
+    # create the toplevel information
+    config = AirportSequencing(airport.Icao)
+    config.Airport = data['airport'].upper()
+    config.UseMustShallMay = data['useMustShallMay']
+
+    # parse the active runways
+    for activeRunway in data['activeRunways']:
+        if 'runway' not in activeRunway or 'spacing' not in activeRunway:
+            return Response('{}', status=404, mimetype='application/json')
+        if False == isinstance(activeRunway['runway'], str) or False == isinstance(activeRunway['spacing'], int):
+            return Response('{}', status=404, mimetype='application/json')
+
+        gngRunway = None
+        for runway in airport.Configuration.GngData.Runways[airport.Icao]:
+            if runway.Name == activeRunway['runway']:
+                gngRunway = runway
+                break
+
+        # could not find the runway
+        if None == gngRunway:
+            return None
+
+        runway = RunwaySequencing(gngRunway)
+        runway.Spacing = activeRunway['spacing']
+        config.activateRunway(runway)
+
+    # parse the dependent runways
+    for dependency in data['dependentRunways']:
+        if 2 != len(dependency) or False == isinstance(dependency[0], str) or False == isinstance(dependency[1], str):
+            return Response('{}', status=404, mimetype='application/json')
+        if False == config.addDependency(dependency[0], dependency[1]):
+            return Response('{}', status=404, mimetype='application/json')
+
+    airport.configure(config)
+
+    return Response('{}', status=200, mimetype='application/json')