backend/hafas: combine walking legs

src/backend/hafas/parse/journey.nim

@@ -1,6 +1,7 @@
 import ../types
 import json
 import leg
+import options
 
 proc mkParseJourney*(common: CommonData): proc =
   proc parseJourney(j: JsonNode): Journey =
@@ -11,4 +12,23 @@ proc mkParseJourney*(common: CommonData): proc =
     result.legs = j{"secL"}.getElems().map(mkParseLeg(common))
     result.lastUpdated = common.timeStamp
 
+    # combine walking legs
+    var i = 0
+    var firstWalking = -1
+    while true:
+      inc(i)
+      if i >= len(result.legs): break
+      if result.legs[i].isWalking:
+        if firstWalking == -1:
+          firstWalking = i
+          continue
+
+        else:
+          result.legs[firstWalking].arrival = result.legs[i].arrival
+          result.legs[firstWalking].distance.get += result.legs[i].distance.get
+          result.legs.delete(i)
+          dec(i)
+      else:
+        firstWalking = -1
+
   return parseJourney