app finished!

lib/paxos.ex

@@ -11,10 +11,7 @@ defmodule Utils do
     end
   end
 
-  def alter_name(name, part) do
-    String.to_atom(Atom.to_string(name) <> part)
-  end
-
+  def alter_name(name, part), do: :"#{name}#{part}"
   def beb_broadcast(m, dest), do: for(p <- dest, do: safecast(p, m))
 
   def register_name(name, pid, link \\ true) do
@@ -46,7 +43,7 @@ defmodule Utils do
       IO.puts(msg)
     end
   end
- 
+
   defmacro or_state(val, do: expr) do
     quote do
       case unquote(val) do

lib/server.ex

@@ -1,6 +1,6 @@
 defmodule ServerMacros do
 
-  def create_create_loop(name, do: match_exp, else: process_exp, after: after_exp) do
+  def create_create_loop(name, do: match_exp, else: process_exp) do
     function_name = :"#{name}_loop"
 
     ast1 = quote do
@@ -8,21 +8,14 @@ defmodule ServerMacros do
     end
     ast2 = quote do
       value ->
-        log("Got unexpected value: #{inspect(value)}")
-        Process.send_after(self(), value, t + 2000)
+        # TODO check spelling
+        log("Disreguarding: #{inspect(value)}")
+        # Process.send_after(self(), value, t + 2000)
         unquote(function_name)(v, t)
     end
 
     ast3 = ast1 ++ match_exp ++ ast2
 
-    after_exp = if after_exp == nil do
-      quote do
-        t -> :timeout
-      end
-    else
-      after_exp
-    end
-
     quote do
       def unquote(function_name)(v, t) do
         var!(v) = v
@@ -30,22 +23,18 @@ defmodule ServerMacros do
         receive do
           unquote(ast3)
         after
-          unquote(after_exp)
+          t -> :timeout
         end
       end
     end
   end
 
   def create_create_loop(name, do: exp, else: else_exp) do
-    create_create_loop(name, do: exp, else: else_exp, after: nil)
-  end
-
-  def create_create_loop(name, do: exp, after: after_exp) do
-    create_create_loop(name, do: exp, else: nil, after: after_exp)
+    create_create_loop(name, do: exp, else: else_exp)
   end
 
   def create_create_loop(name, do: exp) do
-    create_create_loop(name, do: exp, else: nil, after: nil)
+    create_create_loop(name, do: exp, else: nil)
   end
 
   defmacro create_loop(name, clauses) do
@@ -140,7 +129,7 @@ defmodule Server do
         state = qurey_status(state)
         game = state.games[game_id]
         cond do
-          is_finished(game, game_id) ->
+          is_finished(state, game_id) ->
             {_, score} = state.games[game_id]
             safecast(pid_to_inform, {:make_move, game_id, :game_finished, score})
             state
@@ -155,8 +144,7 @@ defmodule Server do
 
   def try_to_play(state, game_id, move, pid_to_inform) do
     name = state.name
-    # TODO create new hand
-    new_hand = 2
+    new_hand = get_hand_for_game_state(state.games[game_id].game_state)
     try_propose {:make_move, game_id, name, move, new_hand}
     do
       {:decision, {:make_move, ^game_id, ^name, ^move, ^new_hand}} ->
@@ -206,20 +194,36 @@ defmodule Server do
 
       true ->
         state = qurey_status(state)
-        safecast(pid_to_inform, {:game_state, game_id, state.games[game_id].game_state, state.games[game_id].hand[state.name]})
+        if is_finished(state, game_id) do
+          {_, score} = state.games[game_id]
+          safecast(pid_to_inform, {:game_state, game_id, :game_finished, score})
+        else
+          game = state.games[game_id]
+          safecast(pid_to_inform, {:game_state, game_id, game.game_state, game.hand[state.name]})
+        end
         state
     end
   end
 
+  def get_hand_for_game_state(game_state) do
+    r1 = Enum.random(0..100)
+    if r1 <= 10 do
+      :+
+    else
+      mx = game_state |> Enum.filter(fn m -> m != :+ end) |> Enum.max()
+      mn = max(mx - 20, 1)
+      mx = max(mx - 2, 4)
+      Enum.random(mn..mx)
+    end 
+  end
+
   def try_to_create_game(state, participants) do
     game_ids = Map.keys(state.games)
     latest = Enum.at(Enum.sort(game_ids), length(game_ids) - 1)
     new_game_id = if latest do latest else 0 end + 1
 
-    # TODO: randomize game state
-    new_game_state = [1, 1]
-    # TODO: randomize Initial hand value
-    hand = Enum.reduce(participants, %{}, fn p, acc -> Map.put(acc, p, 1) end)
+    new_game_state = Enum.to_list(0..Enum.random(3..8)) |> Enum.map(fn _ -> Enum.random(1..4) end)
+    hand = Enum.reduce(participants, %{}, fn p, acc -> Map.put(acc, p, get_hand_for_game_state(new_game_state)) end)
 
     try_propose {:start_game, new_game_id, participants, new_game_state, hand}
     do
@@ -252,7 +256,7 @@ defmodule Server do
 
   def set_modifed(state, game, val \\ false) do
     or_state not is_finished(state, game) do
-      %{state | games: Map.put(state.games, game, %{state.games | modified: val})}
+      %{state | games: Map.put(state.games, game, %{state.games[game] | modified: val})}
     end
   end
 
@@ -260,34 +264,174 @@ defmodule Server do
   # Apply Game States
   #
 
+  def get_index(indexed_game_state, spos, index) do
+    index = spos + index
+    len = length(indexed_game_state)
+    cond do
+      index < 0 ->
+        len - 1
+      index >= len ->
+        rem(index, len)
+      true ->
+        index 
+    end
+  end
+
+  def simplify_game_state_pluses([], indexed_game_state), do: {false, indexed_game_state}
+  def simplify_game_state_pluses([{:+, i} | tl], indexed_game_state) do
+    before_i = get_index(indexed_game_state, i, -1)
+    after_i = get_index(indexed_game_state, i, 1)
+
+    if before_i != after_i do 
+      {b, b_i} = Enum.at(indexed_game_state, before_i)
+      {a, a_i} = Enum.at(indexed_game_state, after_i)
+
+      if b == a do
+        case b do
+          :+ -> simplify_game_state_pluses(tl, indexed_game_state)
+          n ->
+            list =
+              indexed_game_state |>
+              Enum.map(fn {x, ti} -> if ti == i, do: {{:merged, n + 1}, i}, else: {x, ti} end) |>
+              Enum.filter(fn {x, ti} -> cond do
+                  b_i == ti -> false
+                  a_i == ti -> false
+                  true -> true
+                end
+              end) |>
+              reindex()
+            {true, expand_merge(list)}
+        end
+      else
+        simplify_game_state_pluses(tl, indexed_game_state)
+      end
+    else
+        simplify_game_state_pluses(tl, indexed_game_state)
+    end
+  end
+
+  def is_merged(item) do
+    case item do
+      {:merged, _} -> true
+      _ -> false
+    end
+  end
+
+  def expand_merge(indexed_game_state) do
+    {{:merged, n}, i} = indexed_game_state |> Enum.find(fn {x, _} -> is_merged(x) end)
+
+    b_i = get_index(indexed_game_state, i, - 1)
+    a_i = get_index(indexed_game_state, i, + 1)
+
+    if b_i != a_i do
+      {b, b_i} = Enum.at(indexed_game_state, b_i)
+      {a, a_i} = Enum.at(indexed_game_state, a_i)
+      if a == b do
+        case b do
+          :+ -> indexed_game_state
+          {:merged, _} -> indexed_game_state
+          _ ->
+            indexed_game_state |>
+              Enum.map(fn {x, ti} -> if ti == i, do: {{:merged, n + 1}, i}, else: {x, ti} end) |>
+              Enum.filter(fn {x, ti} -> cond do
+                  b_i == ti -> false
+                  a_i == ti -> false
+                  true -> true
+                end
+              end) |>
+              reindex() |>
+              expand_merge()
+        end
+      else
+        indexed_game_state
+      end
+    else
+      indexed_game_state
+    end
+  end
+
+  def reindex(list, flat \\ true) do
+    list = if flat do
+      list |> Enum.map(fn {n, _} -> n end)
+    else
+      list
+    end
+
+    [list, 0..(length(list) - 1)] |> Enum.zip()
+  end
+
+  def remove_merged([], rec, _), do: rec
+
+  def remove_merged([{:merged, n} | tl], rec, add) do
+    if add do
+      remove_merged(tl, rec ++ [n], false)
+    else
+      remove_merged(tl, rec, false)
+    end
+  end
+
+  def remove_merged([n | tl], rec, add), do: 
+    remove_merged(tl, rec ++ [n], add)
+
+  def remove_merged(list) do
+    log("#{inspect(list)}")
+    remove_merged(list, [], true)
+  end
+
   def simplify_game_state(game_state) do
-    # TODO actualy do this
-    game_state
+    log("game_state: #{inspect(game_state)}")
+    indexed_game_state = 
+      game_state |>
+      reindex(false)
+
+    {repeat, indexed_game_state} =
+      indexed_game_state |>
+      Enum.filter(fn x -> case x do 
+        {:+, _} -> true
+        _ -> false
+        end
+      end) |>
+      simplify_game_state_pluses(indexed_game_state)
+
+    log("game_state2: #{inspect(indexed_game_state)}")
+
+    if repeat do
+      indexed_game_state |> 
+        Enum.map(fn {v, _} -> v end) |>
+        remove_merged() |>
+        simplify_game_state()
+    else
+      indexed_game_state |> Enum.map(fn {v, _} -> v end)
+    end
   end
 
   def apply_game(state, {:make_move, game_id, player_name, pos_move, new_hand}) do
     game = state.games[game_id]
     case game do
       {:finished, _} ->
-        raise :game_already_finished
+        raise "Game already finished"
       :not_playing_in_game ->
         %{state | instance: state.instance + 1 }
       game ->
         game_state = game.game_state
         {b, e} = Enum.split(game_state, pos_move)
         game_state = b ++ [ game.hand[player_name] ] ++ e
-        game_state = simplefy_game_state(game_state)
+        game_state = simplify_game_state(game_state)
         hand = Map.put(game.hand, player_name, new_hand)
         game = %{game| hand: hand, game_state: game_state }
-        # TODO decide if it's ending state
-        %{state| games: Map.put(state.games, game_id, game)}
+
+        if length(game.game_state) > 15 do
+          %{state| games: Map.put(state.games, game_id, {:finished, Enum.sum(game.game_state)}), instance: state.instance + 1}
+        else
+          %{state| games: Map.put(state.games, game_id, game), instance: state.instance + 1}
+        end
     end
   end
   
   def apply_game(state, {:start_game, game_id, participants, new_game_state, hand}) do
     cond do
       state.games[game_id] ->
-        raise :game_already_exists
+        raise "Game Already Exists"
       state.name in participants ->
         %{state | 
           games: Map.put(state.games, game_id, %{
@@ -306,7 +450,7 @@ defmodule Server do
     end
   end
 
-  def apply_game(_, _), do: raise :do_not_know_how_to_apply_game_state
+  def apply_game(_, _), do: raise "Do not know how to apply game state"
 
   ############
   # Interface 
@@ -320,47 +464,53 @@ defmodule Server do
 
   def start_game(name, participants) do
     safecast(name, {:start_game, participants, self()})
-    start_game_loop(nil, 1000)
+    start_game_loop(nil, 10000)
   end
 
   create_loop :get_game_state do
     {:game_state, ^v, :not_playing} ->
-      IO.puts("Not Playing in that game")
+      log("Not Playing in that game")
       {:not_playing}
     {:game_state, ^v, game_state, hand} ->
-      IO.puts("Got game state, #{inspect(game_state)}, hand: #{inspect(hand)}")
+      log("Got game state, #{inspect(game_state)}, hand: #{inspect(hand)}")
       {:state, game_state, hand}
+    {:game_state, ^v, :not_playing} ->
+      log("Not Playing in that game")
+      {:not_playing}
+    {:game_state, ^v, :game_finished, score} ->
+      log("Game finsihed, #{score}")
+      {:game_finished, score}
     {:game_state, ^v, :game_does_not_exist} ->
-      IO.puts("Got game does not exist")
+      log("Got game does not exist")
       {:not_exists}
   end
 
   def get_game_state(name, game_id) do
     safecast(name, {:get_game_state, game_id, self()})
-    get_game_state_loop(game_id, 1000)
+    get_game_state_loop(game_id, 10000)
   end
 
   create_loop :make_move do
     {:make_move, ^v, :game_does_not_exist} ->
-      IO.puts("Got game does not exist")
+      log("Got game does not exist")
       {:not_exists}
     {:make_move, ^v, :not_playing} ->
-      IO.puts("Not Playing in that game")
+      log("Not Playing in that game")
       {:not_playing}
     {:make_move, ^v, :game_finished, score} ->
-      IO.puts("Game finsihed, #{score}")
+      log("Game finsihed, #{score}")
       {:game_finished, score}
     {:make_move, ^v, :player_moved_before, game_state, hand} ->
-      IO.puts("Player moved_before, #{inspect(game_state)} #{inspect(hand)}")
+      log("Player moved_before, #{inspect(game_state)} #{inspect(hand)}")
       {:player_moved_before, game_state, hand}
     {:make_move, ^v, game_state, hand} ->
-      IO.puts("Got game state, #{inspect(game_state)}, hand: #{inspect(hand)}")
+      log("Got game state, #{inspect(game_state)}, hand: #{inspect(hand)}")
       {:state, game_state, hand}
   end
 
   def make_move(name, game_id, move) do
     safecast(name, {:make_move, game_id, move, self()})
-    make_move_loop(game_id, 1000)
+    make_move_loop(game_id, 10000)
   end