Convert the solution data structure back to a list, (but still avoid dupes.)

The put_item call was not happy receiving a set object. So, instead of using
one, we use a lits and just take care to not add any duplicates to the list.

diff --git a/turbot/interaction.py b/turbot/interaction.py
index 75ff299bc6a5df9edd8feaaab4aff01029a12531..86f438c372b5358c8641d3497809d4d1b5b6ba3f 100644 (file)
--- a/turbot/interaction.py
+++ b/turbot/interaction.py
@@ -187,9 +187,9 @@ def edit_puzzle(turb, puzzle, trigger_id):
         solved = True
 
     solution_str = None
-    solution_set = puzzle.get("solution", set())
-    if solution_set:
-        solution_str = ", ".join(solution_set)
+    solution_list = puzzle.get("solution", ())
+    if solution_list:
+        solution_str = ", ".join(solution_list)
 
     view = {
         "type": "modal",
@@ -280,12 +280,13 @@ def edit_puzzle_submission(turb, payload, metadata):
         puzzle['status'] = 'solved'
     else:
         puzzle['status'] = 'unsolved'
-    puzzle['solution'] = set()
+    puzzle['solution'] = ()
     solution = state['solution']['solution']['value']
     if solution:
-        puzzle['solution'] = {
+        # Construct a list from a set to avoid any duplicates
+        puzzle['solution'] = list({
             sol.strip() for sol in solution.split(',')
-        }
+        })
 
     # Verify that there's a solution if the puzzle is mark solved
     if puzzle['status'] == 'solved' and not puzzle['solution']:
@@ -1044,7 +1045,7 @@ def new_puzzle_submission(turb, payload, metadata):
     if rounds:
         puzzle['rounds'] = rounds
 
-    puzzle['solution'] = set()
+    puzzle['solution'] = ()
     puzzle['status'] = 'unsolved'
 
     # Create a channel for the puzzle
@@ -1184,7 +1185,10 @@ def solved(turb, body, args):
 
     # Set the status and solution fields in the database
     puzzle['status'] = 'solved'
-    puzzle['solution'].add(args)
+
+    # Don't append a duplicate solution
+    if args not in puzzle['solution']:
+        puzzle['solution'].append(args)
     if 'state' in puzzle:
         del puzzle['state']
     turb.table.put_item(Item=puzzle)