snake_case and dedents

Author: BNAndras

exercises/practice/camicia/.meta/example.lua

@@ -1,4 +1,4 @@
-local function getCardValue(card)
+local function get_value(card)
   if card == 'J' then
     return 1
   elseif card == 'Q' then
@@ -12,15 +12,15 @@ local function getCardValue(card)
   end
 end
 
-local function simulateGame(playerA, playerB)
+local function simulate_game(playerA, playerB)
   local handA = {}
   for _, card in ipairs(playerA) do
-    table.insert(handA, getCardValue(card))
+    table.insert(handA, get_value(card))
   end
 
   local handB = {}
   for _, card in ipairs(playerB) do
-    table.insert(handB, getCardValue(card))
+    table.insert(handB, get_value(card))
   end
 
   local turn = 'A'
@@ -58,36 +58,34 @@ local function simulateGame(playerA, playerB)
       else
         turn = 'A'
       end
-    else
-      if currentDebt > 0 then
-        currentDebt = currentDebt - 1
-        if currentDebt == 0 then
-          for _, p in ipairs(pile) do
-            table.insert(otherHand, p)
-          end
-          pile = {}
-          totalTricks = totalTricks + 1
-          currentDebt = 0
-
-          if #handA == 0 or #handB == 0 then
-            return { status = 'finished', tricks = totalTricks, cards = cardsPlayed }
-          end
+    elseif currentDebt > 0 then
+      currentDebt = currentDebt - 1
+      if currentDebt == 0 then
+        for _, p in ipairs(pile) do
+          table.insert(otherHand, p)
+        end
+        pile = {}
+        totalTricks = totalTricks + 1
+        currentDebt = 0
 
-          if turn == 'A' then
-            turn = 'B'
-          else
-            turn = 'A'
-          end
+        if #handA == 0 or #handB == 0 then
+          return { status = 'finished', tricks = totalTricks, cards = cardsPlayed }
         end
-      else
+
         if turn == 'A' then
           turn = 'B'
         else
           turn = 'A'
         end
       end
+    else
+      if turn == 'A' then
+        turn = 'B'
+      else
+        turn = 'A'
+      end
     end
   end
 end
 
-return { simulateGame = simulateGame }
+return { simulate_game = simulate_game }

exercises/practice/camicia/.meta/spec_generator.lua

@@ -3,6 +3,15 @@ return {
 
   generate_test = function(case)
     local lines = {}
+    local function snake_case(str)
+      local s = str:gsub('%u', function(c)
+        return '_' .. c:lower()
+      end)
+      if s:sub(1, 1) == '_' then
+        s = s:sub(2)
+      end
+      return s
+    end
     local function string_array(arr)
       if #arr == 0 then
         return "{}"
@@ -21,7 +30,8 @@ return {
                                    case.expected.tricks, case.expected.cards)
 
     table.insert(lines, string.format("local expected = %s", expected))
-    table.insert(lines, string.format("local result = camicia.%s(playerA, playerB)", case.property))
+
+    table.insert(lines, string.format("local result = camicia.%s(playerA, playerB)", snake_case(case.property)))
     table.insert(lines, "assert.are.same(expected, result)")
 
     return table.concat(lines, "\n")

exercises/practice/camicia/camicia.lua

@@ -1,4 +1,91 @@
-local function simulateGame(playerA, playerB)
+local function get_value(card)
+  if card == 'J' then
+    return 1
+  elseif card == 'Q' then
+    return 2
+  elseif card == 'K' then
+    return 3
+  elseif card == 'A' then
+    return 4
+  else
+    return 0
+  end
 end
 
-return { simulateGame = simulateGame }
+local function simulate_game(playerA, playerB)
+  local handA = {}
+  for _, card in ipairs(playerA) do
+    table.insert(handA, get_value(card))
+  end
+
+  local handB = {}
+  for _, card in ipairs(playerB) do
+    table.insert(handB, get_value(card))
+  end
+
+  local turn = 'A'
+  local pile = {}
+  local seen = {}
+  local totalTricks = 0
+  local cardsPlayed = 0
+  local currentDebt = 0
+
+  while true do
+    if #pile == 0 then
+      local round = table.concat(handA, ",") .. "|" .. table.concat(handB, ",") .. "|" .. turn
+      if seen[round] then
+        return { status = 'loop', tricks = totalTricks, cards = cardsPlayed }
+      end
+      seen[round] = true
+    end
+
+    local activeHand = turn == 'A' and handA or handB
+    local otherHand = turn == 'A' and handB or handA
+
+    if #activeHand == 0 then
+      local extraTrick = #pile == 0 and 0 or 1
+      return { status = 'finished', tricks = totalTricks + extraTrick, cards = cardsPlayed }
+    end
+
+    local cardVal = table.remove(activeHand, 1)
+    table.insert(pile, cardVal)
+    cardsPlayed = cardsPlayed + 1
+
+    if cardVal > 0 then
+      currentDebt = cardVal
+      if turn == 'A' then
+        turn = 'B'
+      else
+        turn = 'A'
+      end
+    elseif currentDebt > 0 then
+      currentDebt = currentDebt - 1
+      if currentDebt == 0 then
+        for _, p in ipairs(pile) do
+          table.insert(otherHand, p)
+        end
+        pile = {}
+        totalTricks = totalTricks + 1
+        currentDebt = 0
+
+        if #handA == 0 or #handB == 0 then
+          return { status = 'finished', tricks = totalTricks, cards = cardsPlayed }
+        end
+
+        if turn == 'A' then
+          turn = 'B'
+        else
+          turn = 'A'
+        end
+      end
+    else
+      if turn == 'A' then
+        turn = 'B'
+      else
+        turn = 'A'
+      end
+    end
+  end
+end
+
+return { simulate_game = simulate_game }