From 10d06c2f676f5e48291fa86f937de329a8503222 Mon Sep 17 00:00:00 2001
From: Sven Czarnian <devel@svcz.de>
Date: Wed, 13 Oct 2021 16:16:56 +0200
Subject: [PATCH] parse the constraints and create the waypoint list out of it

---
 aman/config/Airport.py | 63 +++++++++++++++++++++++++++++++++++++++---
 1 file changed, 59 insertions(+), 4 deletions(-)

diff --git a/aman/config/Airport.py b/aman/config/Airport.py
index a423f40..aed6871 100644
--- a/aman/config/Airport.py
+++ b/aman/config/Airport.py
@@ -9,6 +9,7 @@ from aman.config.RHC import RHC
 from aman.config.AirportSequencing import AirportSequencing
 from aman.config.RunwaySequencing import RunwaySequencing
 from aman.formats.SctEseFormat import SctEseFormat
+from aman.types.Waypoint import Waypoint
 
 class Airport:
     def findGngData(data, path):
@@ -103,11 +104,65 @@ class Airport:
             for i in range(0, len(dependencies), 2):
                 self.DefaultSequencing.addDependency(dependencies[i], dependencies[i + 1])
 
-    def parseConstraints(self, icao : str, planning):
+    def parseConstraints(self, planning):
+        self.ArrivalRouteConstraints = {}
+
         for key in planning:
             if True == key.startswith('constraints'):
                 star = key.replace('constraints', '').upper()
-                #print(star)
+                if '' != star:
+                    elements = list(filter(None, planning[key].split(':')))
+                    if 3 > len(elements):
+                        sys.stderr.write('Invalid constraint line: ' + key + '=' + planning[key])
+                        sys.exit(-1)
+
+                    waypoints = []
+
+                    # values for the waypoint constraints
+                    waypointName = elements[0]
+                    constraints = [-1, -1]
+                    isBaseTurn = False
+                    isFinalTurn = False
+
+                    index = 1
+                    while index < len(elements):
+                        if 'A' == elements[index] or 'S' == elements[index]:
+                            if index + 1 == len(elements) or False == elements[index + 1].isnumeric():
+                                sys.stderr.write('Invalid constraint line: ' + key + '=' + planning[key])
+                                sys.exit(-1)
+
+                            if 'A' == elements[index]:
+                                constraints[0] = int(elements[index + 1])
+                            else:
+                                constraints[1] = int(elements[index + 1])
+                            index += 1
+                        elif 'B' == elements[index]:
+                            isBaseTurn = True
+                        elif 'F' == elements[index]:
+                            isFinalTurn = True
+                        else:
+                            if False == isBaseTurn and False == isFinalTurn and -1 == constraints[0] and -1 == constraints[1] and '' == waypointName:
+                                sys.stderr.write('Invalid constraint line: ' + key + '=' + planning[key])
+                                sys.exit(-1)
+                            if True == isBaseTurn and True == isFinalTurn:
+                                sys.stderr.write('Invalid constraint line: ' + key + '=' + planning[key])
+                                sys.exit(-1)
+
+                            waypoints.append(Waypoint(name = waypointName, base = isBaseTurn, final = isFinalTurn))
+                            if -1 != constraints[0]:
+                                waypoints[-1].Altitude = constraints[0]
+                            if -1 != constraints[1]:
+                                waypoints[-1].Speed = constraints[1]
+
+                            # reset temporary data
+                            waypointName = elements[index]
+                            constraints = [-1, -1]
+                            isBaseTurn = False
+                            isFinalTurn = False
+
+                        index += 1
+
+                    self.ArrivalRouteConstraints[star] = waypoints
 
     def __init__(self, filepath : str, icao : str):
         config = configparser.ConfigParser()
@@ -157,6 +212,6 @@ class Airport:
             sys.exit(-1)
         self.GaforId = dataConfig['gaforid']
 
-        # get the default sequencing data and constraints
+        # get the default sequencing data
         self.parseDefaultSequencingConfiguration(icao, planningConfig)
-        self.parseConstraints(icao, planningConfig)
+        self.parseConstraints(planningConfig)