From 21090101aa81a9c64f46f5db1132d5a1f01a205c Mon Sep 17 00:00:00 2001
From: Lizzy Hunt <elizabeth.hunt@simponic.xyz>
Date: Wed, 15 Mar 2023 14:05:47 -0600
Subject: [PATCH] Add uci menu and fix previous game viewer wrap around move
 index

---
 front/src/routes/man_pages.jsx              | 22 ++++++++++-
 lib/chessh/ssh/client/game/previous_game.ex | 43 +++++++++++++++------
 2 files changed, 52 insertions(+), 13 deletions(-)

diff --git a/front/src/routes/man_pages.jsx b/front/src/routes/man_pages.jsx
index 2d988d8..ea03c2a 100644
--- a/front/src/routes/man_pages.jsx
+++ b/front/src/routes/man_pages.jsx
@@ -56,11 +56,29 @@ export const ManPages = () => {
           <ul>
             <li>Ctrl + b / Escape to return to the main menu.</li>
             <li>Ctrl + c / Ctrl + d to exit CheSSH at any point.</li>
-            <li>Arrow keys / hjkl keybinds to move around the board.</li>
             <li>
-              Select a piece with "enter", and move it to a square by pressing
+              Arrow keys / vim (hjkl) keybinds to move around the board and
+              menus.
+            </li>
+            <li>Select menu options with "enter".</li>
+            <li>
+              Select a game piece "enter", and move it to a square by pressing
               "enter" again.
             </li>
+            <li>
+              In the "Previous Games" viewer, use h/l or left/right to view the
+              previous/next move.
+            </li>
+
+            <li>In a game board use "f" to flip the board.</li>
+            <li>
+              In the "Previous Games" viewer, use "m" to show the game's move
+              history in UCI notation (which you may convert to PGN{" "}
+              <a href="https://www.dcode.fr/uci-chess-notation" target="_blank">
+                here
+              </a>
+              ).
+            </li>
           </ul>
         </div>
       </div>
diff --git a/lib/chessh/ssh/client/game/previous_game.ex b/lib/chessh/ssh/client/game/previous_game.ex
index 38172fd..73de868 100644
--- a/lib/chessh/ssh/client/game/previous_game.ex
+++ b/lib/chessh/ssh/client/game/previous_game.ex
@@ -13,7 +13,8 @@ defmodule Chessh.SSH.Client.PreviousGame do
               binbo_pid: nil,
               game: %Game{},
               client_pid: nil,
-              flipped: false
+              flipped: false,
+              viewing_uci: false
   end
 
   use Chessh.SSH.Client.Screen
@@ -59,6 +60,7 @@ defmodule Chessh.SSH.Client.PreviousGame do
         %State{
           move_idx: move_idx,
           flipped: flipped,
+          viewing_uci: viewing_uci,
           game: %Game{
             moves: num_moves
           }
@@ -67,10 +69,10 @@ defmodule Chessh.SSH.Client.PreviousGame do
     new_move_idx =
       case action do
         :left ->
-          Utils.wrap_around(move_idx, -1, num_moves)
+          Utils.wrap_around(move_idx, -1, num_moves + 1)
 
         :right ->
-          Utils.wrap_around(move_idx, 1, num_moves)
+          Utils.wrap_around(move_idx, 1, num_moves + 1)
 
         _ ->
           move_idx
@@ -79,7 +81,8 @@ defmodule Chessh.SSH.Client.PreviousGame do
     new_state = %State{
       state
       | move_idx: new_move_idx,
-        flipped: if(action == "f", do: !flipped, else: flipped)
+        flipped: if(action == "f", do: !flipped, else: flipped),
+        viewing_uci: if(action == "m", do: !viewing_uci, else: viewing_uci)
     }
 
     render(new_state)
@@ -92,15 +95,33 @@ defmodule Chessh.SSH.Client.PreviousGame do
           client_pid: client_pid,
           move_fens: move_fens,
           move_idx: move_idx,
-          game: %Game{id: game_id, moves: total_moves}
+          game: %Game{id: game_id, moves: total_moves, game_moves: game_moves},
+          viewing_uci: viewing_uci
         } = 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 ->"]
+      case viewing_uci do
+        false ->
+          {:ok, fen} = Map.fetch(move_fens, "#{move_idx}")
+
+          [
+            "Game #{game_id} | Move #{move_idx} / #{total_moves}",
+            "| <- previous move | next move ->",
+            "| press 'm' to view move history",
+            "==="
+          ] ++
+            Renderer.draw_board(fen, flipped)
+
+        true ->
+          [
+            Utils.clear_codes(),
+            "UCI Notation For Game #{game_id}",
+            "- Press 'm' to go back to the board",
+            "- Use https://dcode.fr/uci-chess-notation to convert to PGN",
+            "",
+            game_moves
+          ]
+      end
 
     send(
       client_pid,
@@ -111,7 +132,7 @@ defmodule Chessh.SSH.Client.PreviousGame do
            fn {i, line} ->
              [ANSI.cursor(i, 0), ANSI.clear_line(), line]
            end
-         )}
+         ) ++ [ANSI.home()]}
     )
 
     state