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", "playfield", "topMessage", "nextPuzzleButtons"];
  static outlets = ["overlay"];

  async connect() {
    this._wordSource = new WordSource();
    this._gameController = new GameController(this._wordSource);

    await this._gameController.start();

    this._buildPlayfield();
  }

  tappedKey(key) {
    console.log(`Key ${key} was tapped via outliet`);

    this._addLetter(key);
  }

  _addLetter(letter) {
    if (this._activeRowIndex < 0) {
      return;
    } else if (this._activeLetter >= this._gameController.wordLength()) {
      return;
    }

    let rowElem = this.rowTargets[this._activeRowIndex];
    let colElem = rowElem.querySelectorAll("span")[this._activeLetter];

    colElem.innerText = letter.toUpperCase();
    colElem.classList.remove("hint");

    this._activeLetter += 1;
  }

  enterGuess() {
    if (this._activeLetter >= this._gameController.wordLength()) {
      let rowElem = this.rowTargets[this._activeRowIndex];
      this._verifyGuess(rowElem);
    }
  }

  loadDef(ev) {
    ev.preventDefault()

    let word = this._gameController.currentWord();
    window.open(`https://www.ecosia.org/search?q=define+${word}`, "_blank");
  }

  tappedBackspace() {
    if (this._activeLetter == 0) {
      return;
    }

    this._activeLetter -= 1;
    let rowElem = this.rowTargets[this._activeRowIndex];
    let colElem = rowElem.querySelectorAll("span")[this._activeLetter];

    let colHint = colElem.dataset["hint"];
    if (colHint) {
      colElem.classList.add("hint");
      colElem.innerText = colHint;
    } else {
      colElem.innerText = "";
    }
  }

  _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.submitGuess(guessedWord);

    switch (results.guessResult) {
    case GUESS_RESULT.FOUL:
      this.overlayOutlet.showMessage("Not in dictionary");

      let newRow = this._buildPlayfieldRow(this._gameController.wordLength());
      this._showHints(newRow);
      rowElem.replaceWith(newRow);
      this._activeLetter = 0;

      window.dispatchEvent(new CustomEvent("guessResults", {
        detail: results
      }));
      break;
    case GUESS_RESULT.MISS:
      this._colorizeRow(rowElem, results);

      this._activeRowIndex += 1;
      if (this._activeRowIndex >= this._gameController.guesses()) {
        this._revealAnswer();
      } else {
        this._activeLetter = 0;
        this._showHints(this.rowTargets[this._activeRowIndex], results.markers);
      }

      break;
    case GUESS_RESULT.WIN:
      this._colorizeRow(rowElem, results);
      this._showWin();
      break;
    }
  }

  async loadNextPuzzle(ev) {
    ev.preventDefault();
    if (await this._gameController.nextWord()) {
      this._buildPlayfield();
    } else {
      this.overlayOutlet.showMessage("No more words available.");
    }
  }

 _showWin() {
   this.topMessageTarget.innerText = "Hooray! You did it.";
   this.nextPuzzleButtonsTarget.classList.remove("hide");
 }

  _revealAnswer() {
    this.topMessageTarget.innerText = this._gameController.currentWord().toUpperCase();
    this.nextPuzzleButtonsTarget.classList.remove("hide");
  }

  _buildPlayfield() {
    let rows = this._gameController.guesses();
    let wordLength = this._gameController.wordLength();
    let {currentGuesses, wasWin} = this._gameController.currentState();

    this._activeRowIndex = currentGuesses.length;
    this._activeLetter = 0;

    window.dispatchEvent(new CustomEvent("resetKeyColors"));

    let newRows = [];
    for (let r = 0; r < rows; r++) {
      let currentGuess = null;
      let currentGuessResults = null;

      if (r < currentGuesses.length) {
        currentGuess = currentGuesses[r];
        currentGuessResults = this._gameController.checkGuess(currentGuess);
      }

      newRows.push(this._buildPlayfieldRow(wordLength, currentGuess, currentGuessResults));
      if (currentGuessResults) {
        window.dispatchEvent(new CustomEvent("guessResults", {
          detail: currentGuessResults
        }));
      }
    }

    if (wasWin) {
      this._showWin();
    } else if (currentGuesses.length >= rows) {
      // User has already used up all their guesses so just show the results;
      this._revealAnswer();
    } else {
      this._showHints(newRows[currentGuesses.length]);

      this.topMessageTarget.innerHTML = "&nbsp;"
      this.nextPuzzleButtonsTarget.classList.add("hide");
    }

    this.playfieldTarget.replaceChildren.apply(this.playfieldTarget, newRows);
  }

  _buildPlayfieldRow(wordLength, currentGuess, currentGuessResults) {
    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");
      if (currentGuess) {
        letterSpan.innerText = currentGuess[c].toUpperCase();
      }
      divElem.appendChild(letterSpan);
    }

    if (currentGuess) {
      this._colorizeRow(divElem, currentGuessResults);
    }

    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
    }));
  }

  _showHints(row) {
    let hint = this._gameController.showHint();

    for (let i = 0; i < this._gameController.wordLength(); i++) {
      if (hint[i]) {
        let colElem = row.children[i];
        colElem.classList.add("hint");
        colElem.innerText = hint[i].toUpperCase();
        colElem.dataset["hint"] = hint[i].toUpperCase();
      }
    }
  }
}