feat: Hangman interaction

backend/src/main/java/cz/jzitnik/chronos/controllers/CharacterController.java

@@ -3,6 +3,7 @@ package cz.jzitnik.chronos.controllers;
 import cz.jzitnik.chronos.entities.Interaction;
 import cz.jzitnik.chronos.entities.Item;
 import cz.jzitnik.chronos.interactions.InteractionService;
+import cz.jzitnik.chronos.payload.errors.NotFoundError;
 import cz.jzitnik.chronos.payload.requests.InteractionRequest;
 import cz.jzitnik.chronos.payload.responses.InteractionResponse;
 import cz.jzitnik.chronos.payload.responses.TakeItemsResponse;
@@ -53,6 +54,27 @@ public class CharacterController {
         );
     }
 
+    @GetMapping("/interacting")
+    @CheckUser
+    public ResponseEntity<UnifiedResponse<Boolean, Error>> isInteracting(@RequestParam String playerKey, @RequestParam Long characterId) {
+        var player = playerRepository.findByPlayerKey(playerKey).get();
+        var characterOptional = characterRepository.findById(characterId);
+
+        if (characterOptional.isEmpty()) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(UnifiedResponse.failure(new NotFoundError("Character was not found!")));
+        }
+
+        var character = characterOptional.get();
+
+        var playerInteractingWithCharacter = character.getInteractionData().getPlayer();
+
+        if (playerInteractingWithCharacter == null || !playerInteractingWithCharacter.getId().equals(player.getId())) {
+            return ResponseEntity.ok(UnifiedResponse.success(false));
+        }
+
+        return ResponseEntity.ok(UnifiedResponse.success(true));
+    }
+
     @PostMapping("/interact")
     @CheckUser
     public ResponseEntity<UnifiedResponse<InteractionResponse, Error>> interact(@RequestParam String playerKey, @RequestBody InteractionRequest interactionRequest) {

backend/src/main/java/cz/jzitnik/chronos/entities/Interaction.java

@@ -25,16 +25,16 @@ public class Interaction {
     @JsonIgnore
     private Character character;
 
-    public Interaction(String startText, String interactedWithText, Character character) {
-        this.startText = startText;
-        this.interactedWithText = interactedWithText;
-        this.character = character;
-    }
-
     @JsonIgnore
     private String memory;
 
     @ManyToOne
     @JsonIgnore
     private Player player;
+
+    public Interaction(String startText, String interactedWithText, Character character) {
+        this.startText = startText;
+        this.interactedWithText = interactedWithText;
+        this.character = character;
+    }
 }

backend/src/main/java/cz/jzitnik/chronos/interactions/list/Hangman.java

@@ -1,16 +1,219 @@
 package cz.jzitnik.chronos.interactions.list;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import cz.jzitnik.chronos.entities.Character;
+import cz.jzitnik.chronos.entities.Item;
+import cz.jzitnik.chronos.entities.ItemType;
 import cz.jzitnik.chronos.entities.Player;
 import cz.jzitnik.chronos.interactions.InteractionPlayer;
 import cz.jzitnik.chronos.payload.responses.InteractionResponse;
+import cz.jzitnik.chronos.repository.CharacterRepository;
+import cz.jzitnik.chronos.services.ItemService;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Random;
+import java.util.Set;
+
 @Service
 public class Hangman implements InteractionPlayer {
+    @Autowired
+    private CharacterRepository characterRepository;
+    @Autowired
+    private ItemService itemService;
+
+    private static final int ATTEMPTS = 6; // Arbitrary max incorrect guesses
+
+    // This can be expanded at any time
+    private final String[] words = {
+        "dům", "pes", "les", "hra", "vlk", "kůň", "vůz", "most", "pán", "noc", "den", "čas", "hora",
+        "sýr", "chleba", "pole", "věk", "slon", "osel", "šnek", "pták", "koza", "míč", "lípa", "knedlík",
+        "čaj", "víno", "hráč", "strom", "nebe", "město", "stůl", "kniha", "kráva", "cesta", "divadlo",
+        "okno", "hory", "slunce", "přítel", "rodina", "jahoda", "židle", "mravenec", "mléko", "sukně",
+        "koberec", "tabule", "škola", "letadlo", "jablko", "písmeno", "košile", "ulice", "dopis",
+        "zpráva", "kolega", "kamarád", "postel", "zmrzlina", "autobus", "tramvaj", "pohádka", "vánočka",
+        "učitelka", "kancelář", "čokoláda", "letadlo", "zahrada", "studentka", "knihtisk", "televizor",
+        "polévka", "zázračný", "papírnictví", "šampaňské", "kinematografie", "obloha", "křišťálový"
+    };
+
+    // Memory
+    @AllArgsConstructor
+    @NoArgsConstructor
+    @Getter
+    @Setter
+    private static class HangmanMemory {
+        private String word;
+        private Set<java.lang.Character> correctGuessesSet;
+        private Set<java.lang.Character> incorrectGuessesSet;
+        private String currentProgress;
+    }
+    private static HangmanMemory readMemory(String memory) {
+        ObjectMapper objectMapper = new ObjectMapper();
+        try {
+            return objectMapper.readValue(memory, HangmanMemory.class);
+        } catch (Exception e) {
+            System.out.println(e);
+            throw new RuntimeException("Somebody just fucked up db."); // If this happens idk what is wrong with my life
+        }
+    }
+    private static String writeMemory(HangmanMemory memory) {
+        ObjectMapper objectMapper = new ObjectMapper();
+        try {
+            return objectMapper.writeValueAsString(memory);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e); // Well hopefully this will never happen
+        }
+    }
+
+    // Response
+    @AllArgsConstructor
+    @Getter
+    @Setter
+    private static class HangmanResponse {
+        public enum Type {
+            GAME_CREATED,
+            GAME_WON,
+            GAME_LOST,
+            GAME_CONTINUE,
+        }
+
+        private Type type;
+
+        private Set<java.lang.Character> correctGuessesSet;
+        private Set<java.lang.Character> incorrectGuessesSet;
+        private String currentProgress;
+    }
 
     @Override
     public InteractionResponse play(Player player, Character character, String data) {
-        return null;
+        if (character.getInteractionData().getPlayer() == null) {
+            // New game
+            try {
+                return initGame(player, character);
+            } catch (JsonProcessingException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        // Game already exists
+        if (!character.getInteractionData().getPlayer().getId().equals(player.getId())) {
+            // Another player tries to interact with character while somebody else is interacting with him
+            return new InteractionResponse(false, "already_playing", new ArrayList<>());
+        }
+
+        try {
+            return guessChar(player, character, data);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e); // I hate error handling. This code is just shit but whatever
+        }
+    }
+
+    private InteractionResponse initGame(Player player, Character character) throws JsonProcessingException {
+        var interactionData = character.getInteractionData();
+        interactionData.setPlayer(player);
+
+        Random random = new Random();
+        int index = random.nextInt(words.length);
+        String randomWord = words[index];
+
+        String initialProgress = randomWord.replaceAll(".", "_");
+
+        interactionData.setMemory(writeMemory(
+                new HangmanMemory(randomWord, new HashSet<>(), new HashSet<>(), initialProgress)
+        ));
+
+        characterRepository.save(character);
+
+        var response = new HangmanResponse(HangmanResponse.Type.GAME_CREATED, new HashSet<>(), new HashSet<>(), initialProgress);
+        ObjectMapper objectMapper = new ObjectMapper();
+
+        return new InteractionResponse(true, objectMapper.writeValueAsString(response), new ArrayList<>());
+    }
+
+    private InteractionResponse guessChar(Player player, Character character, String data) throws JsonProcessingException {
+        var interactionMemory = readMemory(character.getInteractionData().getMemory());
+
+        if (data.equals("get_data")) {
+            var response = new HangmanResponse(HangmanResponse.Type.GAME_CONTINUE, interactionMemory.getCorrectGuessesSet(), interactionMemory.getIncorrectGuessesSet(), interactionMemory.getCurrentProgress());
+            ObjectMapper objectMapper = new ObjectMapper();
+            var responseText = objectMapper.writeValueAsString(response);
+
+            return new InteractionResponse(false, responseText, new ArrayList<>());
+        }
+
+        String word = interactionMemory.getWord();
+        var correctGuessesSet = interactionMemory.getCorrectGuessesSet();
+        var incorrectGuessesSet = interactionMemory.getIncorrectGuessesSet();
+        StringBuilder currentProgress = new StringBuilder(interactionMemory.getCurrentProgress());
+
+        if (data == null || data.isEmpty()) {
+            return new InteractionResponse(false, "invalid_input", new ArrayList<>());
+        }
+
+        char guessedChar = data.charAt(0);
+
+        if (correctGuessesSet.contains(guessedChar) || incorrectGuessesSet.contains(guessedChar)) {
+            return new InteractionResponse(false, "already_guessed", new ArrayList<>());
+        }
+
+        boolean isCorrect = false;
+        for (int i = 0; i < word.length(); i++) {
+            if (word.charAt(i) == guessedChar) {
+                currentProgress.setCharAt(i, guessedChar);
+                isCorrect = true;
+            }
+        }
+
+        if (isCorrect) {
+            correctGuessesSet.add(guessedChar);
+        } else {
+            incorrectGuessesSet.add(guessedChar);
+        }
+
+        interactionMemory.setCorrectGuessesSet(correctGuessesSet);
+        interactionMemory.setIncorrectGuessesSet(incorrectGuessesSet);
+        interactionMemory.setCurrentProgress(currentProgress.toString());
+
+        character.getInteractionData().setMemory(writeMemory(interactionMemory));
+
+        characterRepository.save(character);
+
+
+        // Submit response
+        ObjectMapper objectMapper = new ObjectMapper();
+
+        if (currentProgress.toString().equals(word)) {
+            var item = new Item(ItemType.KEY_FRAGMENT, player);
+            itemService.addItem(player, item);
+
+            character.setInteractedWith(true);
+            characterRepository.save(character);
+
+            var items = new ArrayList<Item>();
+            items.add(item);
+
+            var response = new HangmanResponse(HangmanResponse.Type.GAME_WON, correctGuessesSet, incorrectGuessesSet, currentProgress.toString());
+            var responseText = objectMapper.writeValueAsString(response);
+            return new InteractionResponse(true, responseText, items);
+        } else if (incorrectGuessesSet.size() >= ATTEMPTS) {
+            character.setInteractedWith(true);
+            characterRepository.save(character);
+
+            var response = new HangmanResponse(HangmanResponse.Type.GAME_LOST, correctGuessesSet, incorrectGuessesSet, currentProgress.toString());
+            var responseText = objectMapper.writeValueAsString(response);
+            return new InteractionResponse(false, responseText, new ArrayList<>());
+        }
+
+        var response = new HangmanResponse(HangmanResponse.Type.GAME_CONTINUE, correctGuessesSet, incorrectGuessesSet, currentProgress.toString());
+        var responseText = objectMapper.writeValueAsString(response);
+
+        return new InteractionResponse(false, responseText, new ArrayList<>());
     }
 }

backend/src/main/java/cz/jzitnik/chronos/services/InitGameService.java

@@ -43,14 +43,35 @@ public class InitGameService {
         farmar.setInteraction(Interaction.Farmer);
         farmar.setInteractionData(new cz.jzitnik.chronos.entities.Interaction(
                 "Tak si zahrajeme kámen nůžky papír",
-                "Se mnou jsi již hrál kámen nůžky papír. Znovu už ti fragment klíče nedám",
+                "Se mnou někdo již hrál kámen nůžky papír. Další fragment klíče nemám.",
                 farmar
         ));
         stodola_characters.add(farmar);
         stodola.setCharacters(stodola_characters);
 
+        // Shop
+        var shop = new Room(
+                "Obchod",
+                game
+        );
+        var shop_characters = new ArrayList<Character>();
+        var cashier = new Character(
+                "Prodavač",
+                shop,
+                "Ahoj já jsem prodavač a budeš se mnou hrát šibenici."
+        );
+        cashier.setInteraction(Interaction.Cashier);
+        cashier.setInteractionData(new cz.jzitnik.chronos.entities.Interaction(
+                "Tak si zahrajeme šibenici",
+                "Se mnou někdo již hrál šibenici. Další fragment klíče nemám.",
+                cashier
+        ));
+        shop_characters.add(cashier);
+        shop.setCharacters(shop_characters);
+
         rooms.add(outside);
         rooms.add(stodola);
+        rooms.add(shop);
 
         game.setRooms(rooms);
 

frontend/src/main/java/cz/jzitnik/api/ApiService.java

@@ -83,6 +83,12 @@ public interface ApiService {
             @Query("characterId") Long characterId
     );
 
+    @GET("game/characters/interacting")
+    Call<UnifiedResponse<Boolean, Error>> isInteracting(
+            @Query("playerKey") String playerKey,
+            @Query("characterId") Long characterId
+    );
+
     @POST("game/characters/interact")
     Call<UnifiedResponse<InteractionResponse, Error>> interact(
             @Query("playerKey") String playerKey,

frontend/src/main/java/cz/jzitnik/api/types/Interaction.java

@@ -1,5 +1,6 @@
 package cz.jzitnik.api.types;
 
 public enum Interaction {
-    Farmer
+    Farmer,
+    Cashier
 }

frontend/src/main/java/cz/jzitnik/game/interactions/Hangman.java

@@ -0,0 +1,104 @@
+package cz.jzitnik.game.interactions;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import cz.jzitnik.api.ApiService;
+import cz.jzitnik.api.requests.InteractionRequest;
+import cz.jzitnik.api.responses.InteractionResponse;
+import cz.jzitnik.api.types.Character;
+import cz.jzitnik.utils.Cli;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import java.io.Console;
+import java.io.IOException;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+@AllArgsConstructor
+public class Hangman {
+    private Character character;
+    private ApiService apiService;
+    private String playerKey;
+
+    @Getter
+    private static class HangmanResponse {
+        public enum Type {
+            GAME_CREATED,
+            GAME_WON,
+            GAME_LOST,
+            GAME_CONTINUE,
+        }
+
+        private Type type;
+
+        private Set<java.lang.Character> correctGuessesSet;
+        private Set<java.lang.Character> incorrectGuessesSet;
+        private String currentProgress;
+    }
+
+    public void play() throws IOException {
+        var response = apiService.isInteracting(playerKey, character.getId()).execute();
+        var interacting = response.body().getData().get();
+
+        if (!interacting) {
+            init();
+        } else {
+            // Get data where we have left of
+            var body = apiService.interact(playerKey, new InteractionRequest("get_data", character.getId())).execute().body();
+            var data = body.getData().get();
+            gameContinue(data);
+        }
+    }
+
+    private void init() throws IOException {
+        var body = apiService.interact(playerKey, new InteractionRequest("", character.getId())).execute().body();
+        var data = body.getData().get();
+        gameContinue(data);
+    }
+
+    private void gameContinue(InteractionResponse data) throws IOException {
+        ObjectMapper objectMapper = new ObjectMapper();
+        var hangmanData  = objectMapper.readValue(data.getResponseText(), HangmanResponse.class);
+
+        switch (hangmanData.getType()) {
+            case GAME_WON -> {
+                Cli.type(character, "Vyhrál jsi! Slovo bylo: " + hangmanData.getCurrentProgress());
+                Cli.gotItems(data.getItems());
+            }
+            case GAME_LOST -> Cli.type(character, "Prohrál jsi! Slovo jsi celé neuhodl. Fragment klíče ti nedám!");
+            case GAME_CONTINUE, GAME_CREATED ->  {
+                System.out.println("Špatně uhodnuté písmena: " + hangmanData.getIncorrectGuessesSet());
+                System.out.println("Slovo: " + hangmanData.getCurrentProgress());
+
+                // I hate my life
+                var guessingChar = askForChar(Stream.concat(hangmanData.getCorrectGuessesSet().stream(), hangmanData.getIncorrectGuessesSet().stream()).collect(Collectors.toSet()));
+
+                var response = apiService.interact(playerKey, new InteractionRequest(guessingChar, character.getId())).execute();
+
+                var body = response.body().getData().get();
+
+                gameContinue(body);
+            }
+        }
+    }
+
+    private String askForChar(Set<java.lang.Character> guessed) {
+        Console console = System.console();
+
+        String data = console.readLine("Zadejte jedno písmeno: ");
+
+        if (data.length() != 1) {
+            Cli.error("Neplatný vstup!");
+            return askForChar(guessed);
+        }
+
+        if (guessed.contains(data.charAt(0))) {
+            Cli.error("Toto písmeno jste již se snažil uhodnout!");
+            return askForChar(guessed);
+        }
+
+        return data;
+    }
+}

frontend/src/main/java/cz/jzitnik/game/interactions/Interactions.java

@@ -20,9 +20,10 @@ public class Interactions {
 
         Cli.type(character, interactionData.getStartText());
 
+        // "Object _ =" is just for java compiler to ensure that all interactions are covered.
         switch (character.getInteraction()) {
-            case Farmer ->  {
-                var options = new String[] {"Kámen", "Nůžky", "Papír"};
+            case Farmer -> {
+                var options = new String[]{"Kámen", "Nůžky", "Papír"};
                 var selected = Cli.selectOptionIndex(Arrays.stream(options).toList());
 
                 var requestData = new InteractionRequest(String.valueOf(selected), character.getId());
@@ -35,6 +36,11 @@ public class Interactions {
                 if (interactionResponse.isSuccess()) {
                     Cli.gotItems(interactionResponse.getItems());
                 }
+
+            }
+            case Cashier -> {
+                Hangman hangman = new Hangman(character, apiService, playerKey);
+                hangman.play();
             }
         }
     }