3 files changed, 149 insertions, 29 deletions
diff --git a/lib/chessh/ssh/client/game/game.ex b/lib/chessh/ssh/client/game/game.ex
index da2bd99..cd641f0 100644
--- a/lib/chessh/ssh/client/game/game.ex
+++ b/lib/chessh/ssh/client/game/game.ex
@@ -12,8 +12,6 @@ defmodule Chessh.SSH.Client.Game do
               game: nil,
               client_pid: nil,
               binbo_pid: nil,
-              width: 0,
-              height: 0,
               flipped: false,
               color: nil,
               player_session: nil
@@ -25,7 +23,6 @@ defmodule Chessh.SSH.Client.Game do
     :syn.add_node_to_scopes([:games])
     :ok = :syn.join(:games, {:game, game_id}, self())
 
-    :binbo.start()
     {:ok, binbo_pid} = :binbo.new_server()
     :binbo.new_game(binbo_pid, fen)
 
@@ -177,11 +174,9 @@ defmodule Chessh.SSH.Client.Game do
           flipped: player_color == :dark
       })
 
-    send(
-      client_pid,
-      {:send_to_ssh, [Utils.clear_codes() | Renderer.render_board_state(new_state)]}
-    )
-
+    # Clear screen and do initial render
+    send(client_pid, {:send_to_ssh, Utils.clear_codes()})
+    render(new_state)
     {:ok, new_state}
   end
 
@@ -227,8 +222,8 @@ defmodule Chessh.SSH.Client.Game do
   end
 
   def input(
-        width,
-        height,
+        _width,
+        _height,
         action,
         %State{
           move_from: move_from,
@@ -300,8 +295,6 @@ defmodule Chessh.SSH.Client.Game do
         state
         | cursor: new_cursor,
           move_from: new_move_from,
-          width: width,
-          height: height,
           flipped: if(action == "f", do: !flipped, else: flipped)
       })
 
@@ -349,13 +342,7 @@ defmodule Chessh.SSH.Client.Game do
       end
     end
 
-    send(client_pid, {:send_to_ssh, Renderer.render_board_state(new_state)})
-    new_state
-  end
-
-  def render(width, height, %State{client_pid: client_pid} = state) do
-    new_state = %State{state | width: width, height: height}
-    send(client_pid, {:send_to_ssh, Renderer.render_board_state(new_state)})
+    render(new_state)
     new_state
   end
 
@@ -370,7 +357,7 @@ defmodule Chessh.SSH.Client.Game do
          from,
          to,
          %State{
-           game: %Game{id: game_id, turn: turn},
+           game: %Game{game_moves: game_moves, id: game_id, turn: turn},
            binbo_pid: binbo_pid,
            flipped: flipped,
            color: turn
@@ -404,7 +391,8 @@ defmodule Chessh.SSH.Client.Game do
                 fen: fen,
                 moves: game.moves + 1,
                 turn: if(game.turn == :dark, do: :light, else: :dark),
-                last_move: attempted_move
+                last_move: attempted_move,
+                game_moves: if(game_moves, do: game_moves <> " ", else: "") <> attempted_move
               },
               changeset_from_status(status)
             )
@@ -498,4 +486,11 @@ defmodule Chessh.SSH.Client.Game do
     end
     |> Map.merge(extra_highlights)
   end
+
+  def render(_width, _height, %State{} = state), do: render(state)
+
+  def render(%State{client_pid: client_pid} = state) do
+    send(client_pid, {:send_to_ssh, Renderer.render_board_state(state)})
+    state
+  end
 end
diff --git a/lib/chessh/ssh/client/game/previous_game.ex b/lib/chessh/ssh/client/game/previous_game.ex
new file mode 100644
index 0000000..38172fd
--- /dev/null
+++ b/lib/chessh/ssh/client/game/previous_game.ex
@@ -0,0 +1,121 @@
+defmodule Chessh.SSH.Client.PreviousGame do
+  @start_fen "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
+
+  alias Chessh.{Game, Utils}
+  alias Chessh.SSH.Client.Game.Renderer
+  alias IO.ANSI
+
+  require Logger
+
+  defmodule State do
+    defstruct move_fens: %{},
+              move_idx: 0,
+              binbo_pid: nil,
+              game: %Game{},
+              client_pid: nil,
+              flipped: false
+  end
+
+  use Chessh.SSH.Client.Screen
+
+  def init([
+        %State{
+          client_pid: client_pid,
+          game: %Game{
+            game_moves: game_moves
+          }
+        } = state
+      ]) do
+    {:ok, binbo_pid} = :binbo.new_server()
+    :binbo.new_game(binbo_pid, @start_fen)
+
+    {move_fens, _moves} =
+      game_moves
+      |> String.trim()
+      |> String.split(" ")
+      |> Enum.reduce({%{"0" => @start_fen}, 1}, fn move, {move_idx_fen_map, curr_turn} ->
+        {:ok, _status} = :binbo.move(binbo_pid, move)
+        {:ok, fen} = :binbo.get_fen(binbo_pid)
+
+        {Map.put(move_idx_fen_map, "#{curr_turn}", fen), curr_turn + 1}
+      end)
+
+    new_state = %State{
+      state
+      | binbo_pid: binbo_pid,
+        move_fens: move_fens
+    }
+
+    send(client_pid, {:send_to_ssh, Utils.clear_codes()})
+    render(new_state)
+
+    {:ok, new_state}
+  end
+
+  def input(
+        _width,
+        _height,
+        action,
+        %State{
+          move_idx: move_idx,
+          flipped: flipped,
+          game: %Game{
+            moves: num_moves
+          }
+        } = state
+      ) do
+    new_move_idx =
+      case action do
+        :left ->
+          Utils.wrap_around(move_idx, -1, num_moves)
+
+        :right ->
+          Utils.wrap_around(move_idx, 1, num_moves)
+
+        _ ->
+          move_idx
+      end
+
+    new_state = %State{
+      state
+      | move_idx: new_move_idx,
+        flipped: if(action == "f", do: !flipped, else: flipped)
+    }
+
+    render(new_state)
+    new_state
+  end
+
+  def render(
+        %State{
+          flipped: flipped,
+          client_pid: client_pid,
+          move_fens: move_fens,
+          move_idx: move_idx,
+          game: %Game{id: game_id, moves: total_moves}
+        } = state
+      ) do
+    {:ok, fen} = Map.fetch(move_fens, "#{move_idx}")
+
+    lines =
+      ["Game #{game_id} | Move #{move_idx} / #{total_moves}"] ++
+        Renderer.draw_board(fen, flipped) ++
+        ["<- previous | next ->"]
+
+    send(
+      client_pid,
+      {:send_to_ssh,
+       [ANSI.home()] ++
+         Enum.map(
+           Enum.zip(1..length(lines), lines),
+           fn {i, line} ->
+             [ANSI.cursor(i, 0), ANSI.clear_line(), line]
+           end
+         )}
+    )
+
+    state
+  end
+
+  def render(_width, _height, %State{} = state), do: render(state)
+end
diff --git a/lib/chessh/ssh/client/game/renderer.ex b/lib/chessh/ssh/client/game/renderer.ex
index c7d3a96..b9071a9 100644
--- a/lib/chessh/ssh/client/game/renderer.ex
+++ b/lib/chessh/ssh/client/game/renderer.ex
@@ -69,8 +69,6 @@ defmodule Chessh.SSH.Client.Game.Renderer do
   end
 
   def render_board_state(%Game.State{
-        width: _width,
-        height: _height,
         highlighted: highlighted,
         flipped: flipped,
         game:
@@ -169,12 +167,18 @@ defmodule Chessh.SSH.Client.Game.Renderer do
     )
   end
 
-  defp draw_board(
-         fen,
-         {tile_width, tile_height} = tile_dims,
-         highlights,
-         flipped
-       ) do
+  def draw_board(
+        fen,
+        flipped
+      ),
+      do: draw_board(fen, {@tile_width, @tile_height}, %{}, flipped)
+
+  def draw_board(
+        fen,
+        {tile_width, tile_height} = tile_dims,
+        highlights,
+        flipped
+      ) do
     board_coord_to_piece_art = make_board_coordinate_to_piece_art_map(fen)
     tile_rows = make_board_tiles(tile_dims)