import Phaser from "phaser";

import bg from "./bg.jpg";
import tiles from "./tiles.png";
import sprites from "./tiles.json";
import title from "./title.png";
import instruction from "./instruction.png";

class PlayScene extends Phaser.Scene {
  constructor() {
    super({
      key: "PlayScene",
    });
    this.allowClick = true;

    this.gridBG;

    this.instructions;
    this.text1;
    this.text2;
    this.text3;

    this.currentColor = "";

    this.emitters = {};

    this.grid = [];
    this.matched = [];

    this.moves = 25;

    this.frames = [
      "red.png",
      "bu.png",
      "grey.png",
      "ye.png",
      "pr.png",
      "gr.png",
    ];
  }

  preload() {
    this.load.image("bg", bg);
    this.load.image("title", title);
    this.load.atlas("tiles", tiles, sprites);
    this.load.image("instruction", instruction);
  }

  create() {
    const bg = this.add.image(0, 0, "bg");
    bg.setOrigin(0);
    bg.displayWidth = 1080;
    bg.displayHeight = 1080;
    this.createIcon(0, 0, 272);
    this.createIcon(1, 0, 272 + 252);
    this.createIcon(2, 0, 272 + 252 * 2);
    this.createIcon(3, 1080 - 184, 272);
    this.createIcon(4, 1080 - 184, 272 + 252);
    this.createIcon(5, 1080 - 184, 272 + 252 * 2);

    //  The game is played in a 14x14 grid with 6 different colors

    this.grid = [];

    for (var x = 0; x < 14; x++) {
      this.grid[x] = [];

      for (var y = 0; y < 14; y++) {
        var sx = 204 + x * 48;
        var sy = 309 + y * 48;
        var color = Phaser.Math.Between(0, 5);

        var block = this.add.image(sx, -1032 + sy, "tiles", this.frames[color]);
        block.setOrigin(0);
        block.displayWidth = 48;
        block.displayHeight = 48;
        block.setData("oldColor", color);
        block.setData("color", color);
        block.setData("x", sx);
        block.setData("y", sy);

        this.grid[x][y] = block;
      }
    }

    //  Do a few floods just to make it a little easier starting off
    this.helpFlood();

    for (var i = 0; i < this.matched.length; i++) {
      var blockk = this.matched[i];

      blockk.setFrame(this.frames[blockk.getData("color")]);
    }

    this.currentColor = this.grid[0][0].getData("color");

    this.particles = this.add.particles("tiles");

    for (var i = 0; i < this.frames.length; i++) {
      this.createEmitter(this.frames[i]);
    }
    const title = this.add.image(1080 / 2, 228, "title");
    title.displayWidth = 222;
    title.displayHeight = 50;
    this.text1 = this.add
      .text(440, 160, "MOVES:", {
        fontSize: 40,
        color: "#fff",
      })
      .setAlpha(0);
    this.text2 = this.add
      .text(590, 160, "00", { fontSize: 40, color: "#fff" })
      .setAlpha(0);
    this.text3 = this.add.text(180, 200, "", 48).setAlpha(0);

    this.instructions = this.add.image(500, 600, "instruction").setAlpha(0);
    //初始化位置
    this.revealGrid();
  }

  update() {}

  helpFlood() {
    for (var i = 0; i < 8; i++) {
      var x = Phaser.Math.Between(0, 13);
      var y = Phaser.Math.Between(0, 13);

      var oldColor = this.grid[x][y].getData("color");
      var newColor = oldColor + 1;

      if (newColor === 6) {
        newColor = 0;
      }

      this.floodFill(oldColor, newColor, x, y);
    }
  }

  createIcon(color, x, y) {
    const area = this.add.rectangle(x, y, 184, 758 / 3);
    area.setOrigin(0);
    area.setData("color", color);
    area.setInteractive();
  }

  revealGrid() {
    this.tweens.add({
      targets: this.gridBG,
      y: 300,
      ease: "Power3",
    });

    var i = 500;

    for (var y = 13; y >= 0; y--) {
      for (var x = 0; x < 14; x++) {
        var block = this.grid[x][y];

        this.tweens.add({
          targets: block,

          y: block.getData("y"),

          ease: "Power3",
          duration: 500,
          delay: i,
        });

        i += 20;
      }
    }

    i -= 1000;

    //  Text

    this.tweens.add({
      targets: [this.text1, this.text2],
      alpha: 1,
      ease: "Power3",
      delay: i,
    });

    i += 500;

    var movesTween = this.tweens.addCounter({
      from: 0,
      to: 25,
      ease: "Power1",
      onUpdate: function (tween, targets, text) {
        text.setText(
          Phaser.Utils.String.Pad(tween.getValue().toFixed(), 2, "0", 1)
        );
      },
      onUpdateParams: [this.text2],
      delay: i,
    });

    i += 500;

    this.tweens.add({
      targets: [this.instructions],
      alpha: 1,
      ease: "Power3",
      delay: i,
    });

    this.time.delayedCall(i, this.startInputEvents, [], this);
  }

  startInputEvents() {
    this.input.on("gameobjectdown", this.onIconDown, this);

    //  Cheat mode :)

    this.input.keyboard.on(
      "keydown_M",
      function () {
        this.moves++;
        this.text2.setText(Phaser.Utils.String.Pad(this.moves, 2, "0", 1));
      },
      this
    );

    this.input.keyboard.on(
      "keydown_X",
      function () {
        this.moves--;
        this.text2.setText(Phaser.Utils.String.Pad(this.moves, 2, "0", 1));
      },
      this
    );
  }

  stopInputEvents() {
    this.input.off("gameobjectdown", this.onIconDown);
  }

  onIconDown(pointer, gameObject) {
    if (!this.allowClick) {
      return;
    }
    var icon = gameObject;

    var newColor = icon.getData("color");

    //  Valid color?
    if (newColor === this.currentColor) {
      return;
    }

    var oldColor = this.grid[0][0].getData("color");
    // console.log('starting flood from', oldColor, this.frames[oldColor], 'to', newColor, this.frames[newColor]);

    if (oldColor !== newColor) {
      this.currentColor = newColor;

      this.matched = [];

      this.instructions.setVisible(false);

      this.moves--;

      this.text2.setText(Phaser.Utils.String.Pad(this.moves, 2, "0", 1));

      this.floodFill(oldColor, newColor, 0, 0);

      if (this.matched.length > 0) {
        this.startFlow();
      }
    }
  }

  createEmitter(color) {
    this.emitters[color] = this.particles.createEmitter({
      frame: color,
      lifespan: 1000,
      speed: { min: 300, max: 400 },
      alpha: { start: 1, end: 0 },
      scale: { start: 0.5, end: 0 },
      rotate: { start: 0, end: 360, ease: "Power2" },
      blendMode: "ADD",
      on: false,
    });
  }

  startFlow() {
    this.matched.sort(function (a, b) {
      var aDistance = Phaser.Math.Distance.Between(a.x, a.y, 166, 66);
      var bDistance = Phaser.Math.Distance.Between(b.x, b.y, 166, 66);

      return aDistance - bDistance;
    });

    //  Swap the sprites

    var t = 0;
    var inc = this.matched.length > 98 ? 6 : 12;

    this.allowClick = false;

    for (var i = 0; i < this.matched.length; i++) {
      var block = this.matched[i];

      var blockColor = this.frames[block.getData("color")];
      var oldBlockColor = this.frames[block.getData("oldColor")];

      var emitter = this.emitters[oldBlockColor];

      this.time.delayedCall(
        t,
        function (block, blockColor) {
          block.setFrame(blockColor);
          emitter.explode(6, block.x, block.y);
        },
        [block, blockColor, emitter]
      );

      t += inc;
    }

    this.time.delayedCall(
      t,
      function () {
        this.allowClick = true;

        if (this.checkWon()) {
          this.gameWon();
        } else if (this.moves === 0) {
          this.gameLost();
        }
      },
      [],
      this
    );
  }

  checkWon() {
    var topLeft = this.grid[0][0].getData("color");

    for (var x = 0; x < 14; x++) {
      for (var y = 0; y < 14; y++) {
        if (this.grid[x][y].getData("color") !== topLeft) {
          return false;
        }
      }
    }

    return true;
  }

  clearGrid() {
    //  Hide everything :)

    var i = 500;

    for (var y = 13; y >= 0; y--) {
      for (var x = 0; x < 14; x++) {
        var block = this.grid[x][y];

        this.tweens.add({
          targets: block,

          scaleX: 0,
          scaleY: 0,

          ease: "Power3",
          duration: 800,
          delay: i,
        });

        i += 10;
      }
    }

    return i;
  }

  gameLost() {
    this.stopInputEvents();

    this.text1.setText("Lost!");
    this.text2.setText(":(");

    var i = this.clearGrid();

    this.text3.setAlpha(0);
    this.text3.setVisible(true);

    this.tweens.add({
      targets: this.text3,
      alpha: 1,
      duration: 1000,
      delay: i,
    });
    this.game.onLose && this.game.onLose();
    this.input.once("pointerdown", this.resetGame, this);
  }

  resetGame() {
    this.text1.setText("Moves");
    this.text2.setText("00");
    this.text3.setVisible(false);

    //  Show everything :)

    var i = 500;

    for (var y = 13; y >= 0; y--) {
      for (var x = 0; x < 14; x++) {
        var block = this.grid[x][y];

        //  Set a new color
        var color = Phaser.Math.Between(0, 5);

        block.setFrame(this.frames[color]);

        block.setData("oldColor", color);
        block.setData("color", color);

        this.tweens.add({
          targets: block,

          scaleX: 1,
          scaleY: 1,

          ease: "Power3",
          duration: 800,
          delay: i,
        });

        i += 10;
      }
    }

    //  Do a few floods just to make it a little easier starting off
    this.helpFlood();

    for (var i = 0; i < this.matched.length; i++) {
      var block = this.matched[i];

      block.setFrame(this.frames[block.getData("color")]);
    }

    this.currentColor = this.grid[0][0].getData("color");

    this.tweens.addCounter({
      from: 0,
      to: 25,
      ease: "Power1",
      onUpdate: function (tween, targets, text) {
        text.setText(
          Phaser.Utils.String.Pad(tween.getValue().toFixed(), 2, "0", 1)
        );
      },
      onUpdateParams: [this.text2],
      delay: i,
    });

    this.moves = 25;

    this.time.delayedCall(i, this.startInputEvents, [], this);
  }

  gameWon() {
    this.game.onWon && this.game.onWon();
    this.stopInputEvents();

    this.text1.setText("Won!!");
    this.text2.setText(":)");

    var i = this.clearGrid();

    this.time.delayedCall(2000, this.boom, [], this);
  }

  boom() {
    var color = Phaser.Math.RND.pick(this.frames);

    this.emitters[color].explode(
      8,
      Phaser.Math.Between(128, 672),
      Phaser.Math.Between(28, 572)
    );

    color = Phaser.Math.RND.pick(this.frames);

    this.emitters[color].explode(
      8,
      Phaser.Math.Between(128, 672),
      Phaser.Math.Between(28, 572)
    );

    this.time.delayedCall(100, this.boom, [], this);
  }
  //调低难度中间放一些相同颜色的
  floodFill(oldColor, newColor, x, y) {
    if (
      oldColor === newColor ||
      this.grid[x][y].getData("color") !== oldColor
    ) {
      return;
    }

    this.grid[x][y].setData("oldColor", oldColor);
    this.grid[x][y].setData("color", newColor);

    if (this.matched.indexOf(this.grid[x][y]) === -1) {
      this.matched.push(this.grid[x][y]);
    }

    if (x > 0) {
      this.floodFill(oldColor, newColor, x - 1, y);
    }

    if (x < 13) {
      this.floodFill(oldColor, newColor, x + 1, y);
    }

    if (y > 0) {
      this.floodFill(oldColor, newColor, x, y - 1);
    }

    if (y < 13) {
      this.floodFill(oldColor, newColor, x, y + 1);
    }
  }
}

export default PlayScene;