import { Controller } from "https://unpkg.com/@hotwired/stimulus@v3.2.2/dist/stimulus.js"

import { GUESS_RESULT, MARKERS, GameController } from "../models/gamecontroller.js";
import { WordSource } from "../models/words.js";


export default class extends Controller {
  static targets = ["row"];
  
  connect() { 
    this._wordSource = new WordSource();
    this._gameController = new GameController(this._wordSource);
    
    this._buildPlayfield();
  }
  
  tappedKey(key) {
    console.log(`Key ${key} was tapped via outliet`);
      
    this._addLetter(key);
  }
  
  _addLetter(letter) {
    if (this._activeRowIndex < 0) {
      return;
    }
    
    let rowElem = this.rowTargets[this._activeRowIndex];
    let colElem = rowElem.querySelectorAll("span")[this._activeLetter];
    
    colElem.innerText = letter.toUpperCase();
    
    this._activeLetter += 1;
    if (this._activeLetter >= this._gameController.wordLength()) {
      this._verifyGuess(rowElem);      
    }
  }
  
  _verifyGuess(rowElem) {
    let guessedWord = Array.from(rowElem.querySelectorAll("span")).map((x) => x.innerText).join("");
    console.log("The guessed word is: " + guessedWord);
    
    let results = this._gameController.checkGuess(guessedWord);
    
    switch (results.guessResult) {
    case GUESS_RESULT.FOUL:
      console.log("not a word!");
      rowElem.replaceWith(this._buildPlayfieldRow(this._gameController.wordLength()));
      this._activeLetter = 0;
      break;
    case GUESS_RESULT.MISS:    
      console.log("try again!");
      
      this._colorizeRow(rowElem, results);
      this._activeRowIndex += 1;
      this._activeLetter = 0;
      break;
    case GUESS_RESULT.WIN:
      console.log("CORRECT!");
      
      if (this._gameController.nextWord()) {
        this._buildPlayfield();
      } else {
        console.log("No more words");
        this._activeRowIndex = -1;
        this._colorizeRow(rowElem, results);
      }
      break;
    }
  }
  
  _buildPlayfield() {
    let rows = this._gameController.guesses();
    let wordLength = this._gameController.wordLength();
    
    this._activeRowIndex = 0;
    this._activeLetter = 0;
    
    let newRows = [];
    for (let r = 0; r < rows; r++) {      
      newRows.push(this._buildPlayfieldRow(wordLength));
    }
    
    this.element.replaceChildren.apply(this.element, newRows);
    
    window.dispatchEvent(new CustomEvent("resetKeyColors"));
  }
  
  _buildPlayfieldRow(wordLength) {
    let divElem = document.createElement("div");
    divElem.classList.add("row");
    divElem.setAttribute("data-playfield-target", "row");
    
    for (let c = 0; c < wordLength; c++) {
      let letterSpan = document.createElement("span");
      divElem.appendChild(letterSpan);
    }
    return divElem;    
  }
  
  _colorizeRow(row, results) {
    let markers = results.markers;
    
    for (let i = 0; i < this._gameController.wordLength(); i++) {
      switch (markers[i]) {
      case MARKERS.RIGHT_POS:
        row.children[i].classList.add("right-pos");
        break;
      case MARKERS.RIGHT_CHAR:
        row.children[i].classList.add("right-char");
        break;              
      case MARKERS.MISS:
        row.children[i].classList.add("miss");
        break;              
      }
    }
    
    window.dispatchEvent(new CustomEvent("guessResults", {
      detail: results
    }));
  }
}