From 52f114b020633cfc4a41a54a4dd22b54ebc57cac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maximilian=20Ke=C3=9Fler?= <git@maximilian-kessler.de>
Date: Sat, 5 Aug 2023 13:04:51 +0200
Subject: [PATCH] parse actions from hanab.live

---
 download.h     | 32 ++++++++++++++++++++++++++++++++
 game_state.h   | 26 +++++++++++++++++++++-----
 game_state.hpp | 16 +++++++++-------
 3 files changed, 62 insertions(+), 12 deletions(-)

diff --git a/download.h b/download.h
index 6d374cc..ad28813 100644
--- a/download.h
+++ b/download.h
@@ -29,6 +29,33 @@ namespace Hanabi {
     return card;
   }
 
+  Action tag_invoke(boost::json::value_to_tag<Action>, boost::json::value const &jv) {
+      Hanabi::Action action{};
+      uint8_t type;
+      boost::json::object const &obj = jv.as_object();
+
+      extract(obj, action.target, "target");
+      extract(obj, type, "type");
+
+      action.type = static_cast<ActionType>(type);
+      switch (action.type) {
+          case ActionType::color_clue:
+          case ActionType::rank_clue:
+              action.type = ActionType::clue;
+              break;
+          case ActionType::end_game:
+          case ActionType::vote_terminate:
+              action.type = ActionType::end_game;
+              break;
+          case ActionType::play:
+          case ActionType::discard:
+              break;
+          default:
+              throw std::runtime_error("Invalid game format, could not parse action type " + std::to_string(type));
+      }
+      return action;
+  }
+
   void tag_invoke(boost::json::value_from_tag, boost::json::value &jv, Hanabi::Card const &card) {
     jv = {{"suitIndex", card.suit}, {"rank", card.rank}};
   }
@@ -51,6 +78,10 @@ std::vector<Hanabi::Card> parse_deck(const boost::json::value& deck_json) {
     return deck;
 }
 
+std::vector<Hanabi::Action> parse_actions(const boost::json::value& action_json) {
+    return boost::json::value_to<std::vector<Hanabi::Action>>(action_json);
+}
+
 boost::json::object download_game_json(int game_id) {
   std::string request_str = "https://hanab.live/export/" + std::to_string(game_id);
   cpr::Response r = cpr::Get(cpr::Url(request_str));
@@ -79,6 +110,7 @@ void get_game(std::variant<int, const char*> game_spec) {
     }
   }();
   const std::vector<Hanabi::Card> deck = parse_deck(game.at("deck"));
+  const std::vector<Hanabi::Action> actions = parse_actions(game.at("actions"));
   const unsigned num_players = game.at("players").as_array().size();
   std::cout << deck.size() << std::endl;
   std::cout << num_players;
diff --git a/game_state.h b/game_state.h
index 7e3fc01..25105a3 100644
--- a/game_state.h
+++ b/game_state.h
@@ -102,9 +102,25 @@ private:
     std::array<std::array<std::array<player_t, max_card_duplicity>, starting_card_rank>, num_suits> _card_positions;
 };
 
-enum class ActionType { discard, clue, play };
+enum class ActionType {
+    play = 0,
+    discard = 1,
+    clue = 2,
+    color_clue = 2,
+    rank_clue = 3,
+    end_game = 4,
+    vote_terminate = 10,
+};
 
+/**
+ * Action type for replay format of hanab.live
+ */
 struct Action {
+    ActionType type{};
+    uint8_t target;
+};
+
+struct BacktrackAction {
   ActionType type{};
   Card discarded{};
   std::uint8_t index{};
@@ -116,17 +132,17 @@ public:
     HanabiState() = default;
     explicit HanabiState(const std::vector<Card>& deck);
 
-    Action clue();
+    BacktrackAction clue();
 
     /**
      * Plays a card from current hand, drawing top card of draw pile and rotating draw pile
      * @param index of card in hand to be played
      */
-    Action play(std::uint8_t index);
+    BacktrackAction play(std::uint8_t index);
 
-    Action discard(std::uint8_t index);
+    BacktrackAction discard(std::uint8_t index);
 
-    void revert(const Action &action);
+    void revert(const BacktrackAction &action);
 
     void draw(std::uint8_t index);
 
diff --git a/game_state.hpp b/game_state.hpp
index 019fc77..72cc186 100644
--- a/game_state.hpp
+++ b/game_state.hpp
@@ -68,13 +68,13 @@ namespace Hanabi {
     }
 
     template<size_t num_suits, player_t num_players, size_t hand_size, uint8_t max_draw_pile_size>
-    Action HanabiState<num_suits, num_players, hand_size, max_draw_pile_size>::clue() {
+    BacktrackAction HanabiState<num_suits, num_players, hand_size, max_draw_pile_size>::clue() {
         assert(_num_clues > 0);
         --_num_clues;
 
         incr_turn();
 
-        return Action{ActionType::clue, {}, {}};
+        return BacktrackAction{ActionType::clue, {}, {}};
     }
 
     template<size_t num_suits, player_t num_players, size_t hand_size, uint8_t max_draw_pile_size>
@@ -90,7 +90,7 @@ namespace Hanabi {
     }
 
     template<std::size_t num_suits, player_t num_players, std::size_t hand_size, uint8_t max_draw_pile_size>
-    Action HanabiState<num_suits, num_players, hand_size, max_draw_pile_size>::play(
+    BacktrackAction HanabiState<num_suits, num_players, hand_size, max_draw_pile_size>::play(
             std::uint8_t index) {
         assert(index < _hands[_turn].size());
         const Card card = _hands[_turn][index];
@@ -98,7 +98,7 @@ namespace Hanabi {
 
         --_stacks[card.suit];
 
-        Action ret{ActionType::play, _hands[_turn][index], index};
+        BacktrackAction ret{ActionType::play, _hands[_turn][index], index};
 
         if (card.rank == 0) {
             // update clues if we played the last card of a stack
@@ -112,14 +112,14 @@ namespace Hanabi {
     }
 
     template<std::size_t num_suits, player_t num_players, std::size_t hand_size, uint8_t max_draw_pile_size>
-    Action HanabiState<num_suits, num_players, hand_size, max_draw_pile_size>::discard(
+    BacktrackAction HanabiState<num_suits, num_players, hand_size, max_draw_pile_size>::discard(
             std::uint8_t index) {
         assert(index < _hands[_turn].size());
         assert(_num_clues != max_num_clues);
 
         _num_clues++;
 
-        Action ret{ActionType::discard, _hands[_turn][index], index};
+        BacktrackAction ret{ActionType::discard, _hands[_turn][index], index};
 
         draw(index);
         incr_turn();
@@ -189,7 +189,7 @@ namespace Hanabi {
 
     template<std::size_t num_suits, player_t num_players, std::size_t hand_size, uint8_t max_draw_pile_size>
     void HanabiState<num_suits, num_players, hand_size, max_draw_pile_size>::revert(
-            const Action &action) {
+            const BacktrackAction &action) {
         decr_turn();
         switch (action.type) {
             case ActionType::clue:
@@ -207,6 +207,8 @@ namespace Hanabi {
                 }
                 revert_draw(action.index, action.discarded);
                 _stacks[action.discarded.suit]++;
+            default:
+                break;
         }
     }