import * as Phaser from "phaser";
import { ComboSmallUI } from "./ComboSmallUI";
import { GAME_TOP_UI_BAR_HEIGHT } from "./GameTopUI";
import { computeUiLayout } from "../../utils/UiLayout";

/** 连续成功操作计为连击链的时间窗口（毫秒）。 */
const COMBO_CHAIN_WINDOW_MS = 1400;

export class ComboManager {
  private scene: Phaser.Scene;

  // ── 连击状态 ──
  private comboClickCount = 0;
  private comboLastSuccessAtMs = 0;
  private comboUi: ComboSmallUI | undefined;
  private comboUiLastCount = 0;
  private comboPraiseText: Phaser.GameObjects.Text | undefined;
  private comboPraiseTween: Phaser.Tweens.Tween | null = null;
  private comboPraiseTimer: Phaser.Time.TimerEvent | null = null;
  private comboPraiseLastShownComboCount = 0;

  constructor(scene: Phaser.Scene) {
    this.scene = scene;
  }

  // ── 公共 getter / setter ──────────────────────────────

  /** 获取当前连击点击次数 */
  get clickCount(): number {
    return this.comboClickCount;
  }

  /** 设置连击点击次数 */
  set clickCount(v: number) {
    this.comboClickCount = v;
  }

  /** 获取上次成功操作的时间戳（毫秒） */
  get lastSuccessAtMs(): number {
    return this.comboLastSuccessAtMs;
  }

  /** 设置上次成功操作的时间戳（毫秒） */
  set lastSuccessAtMs(v: number) {
    this.comboLastSuccessAtMs = v;
  }

  /** 获取连击链时间窗口（毫秒） */
  get chainWindowMs(): number {
    return COMBO_CHAIN_WINDOW_MS;
  }

  // ── 生命周期 ──────────────────────────────────────────────

  /**
   * 创建 ComboSmallUI 组件。在场景 create() 中调用一次。
   * @param layout 包含宽度和UI缩放比例的布局信息
   */
  createUi(layout: { width: number; uiScale: number }): void {
    this.comboUi = new ComboSmallUI(this.scene, layout.width * 0.5, 0, {
      uiScale: layout.uiScale,
      progress: 1,
      comboCount: 1,
      depth: 1600,
    });
    this.comboUi.setScrollFactor(0);
    this.comboUi.setVisible(false);

    this.refreshComboUiPlacement();

    // 定期刷新倒计时
    this.scene.time.addEvent({
      delay: 33,
      loop: true,
      callback: () => this.refreshComboUiCountdown(),
    });
  }

  /**
   * 重置所有连击状态。在每关开始时调用。
   */
  resetState(): void {
    this.comboClickCount = 0;
    this.comboLastSuccessAtMs = 0;
    this.comboUiLastCount = 0;
    this.comboPraiseLastShownComboCount = 0;
    this.clearComboPraiseText();
  }

  // ── 原先在 Game 上的方法 ─────────────────────────────

  /** 成功消除路径后处理连击UI显示。 */
  handleComboUiOnSuccess(): void {
    const comboUi = this.comboUi;
    if (!comboUi) {
      return;
    }

    if (this.comboClickCount < 3) {
      this.hideComboUi();
      return;
    }

    if (!comboUi.visible) {
      comboUi.setVisible(true);
      this.refreshComboUiPlacement();
    }

    comboUi.setProgress(1);

    if (this.comboUiLastCount !== this.comboClickCount) {
      comboUi.setCombo(this.comboClickCount);
      comboUi.playComboPulse();
      this.comboUiLastCount = this.comboClickCount;
      this.refreshComboUiPlacement();
    }
  }

  /** 刷新连击UI倒计时进度条。 */
  refreshComboUiCountdown(): void {
    const comboUi = this.comboUi;
    if (!comboUi || !comboUi.visible) {
      return;
    }

    if (this.comboClickCount < 3 || this.comboLastSuccessAtMs <= 0) {
      this.hideComboUi();
      return;
    }

    const now = this.scene.time.now;
    const elapsed = now - this.comboLastSuccessAtMs;
    const remain = COMBO_CHAIN_WINDOW_MS - elapsed;
    if (remain <= 0) {
      this.comboClickCount = 0;
      this.comboLastSuccessAtMs = 0;
      this.comboPraiseLastShownComboCount = 0;
      this.clearComboPraiseText();
      this.hideComboUi();
      return;
    }

    comboUi.setProgress(remain / COMBO_CHAIN_WINDOW_MS);
  }

  /** 隐藏连击UI组件。 */
  hideComboUi(): void {
    if (this.comboUi) {
      this.comboUi.setVisible(false);
      this.comboUi.setProgress(0);
      this.comboUi.setScale(1);
    }
    this.comboUiLastCount = 0;
  }

  /** 刷新连击UI组件的位置。 */
  refreshComboUiPlacement(): void {
    const comboUi = this.comboUi;
    if (!comboUi) {
      return;
    }

    const layout = computeUiLayout(this.scene);
    const { width, height, uiScale, vScale } = layout;

    const topUiBottom = GAME_TOP_UI_BAR_HEIGHT * vScale;

    const targetComboLeft = 10 * uiScale;
    const targetTextTop = topUiBottom + 10 * vScale;
    const marginRight = 12 * uiScale;

    comboUi.setScale(1);
    comboUi.setPosition(0, 0);

    const glyphLeftLocal = comboUi.getComboGlyphLeftLocal();
    const glyphTopLocal = comboUi.getTextGlyphTopLocal();

    const baseBounds = comboUi.getBounds();
    const localRight = baseBounds.right;
    const distToRight = localRight - glyphLeftLocal;
    const availableW = Math.max(1, width - marginRight - targetComboLeft);
    const fitScale =
      distToRight > 0 ? Math.min(1, availableW / distToRight) : 1;

    comboUi.setScale(fitScale);

    const x = targetComboLeft - glyphLeftLocal * fitScale;
    const y = targetTextTop - glyphTopLocal * fitScale;
    comboUi.setPosition(x, y);
  }

  /** 清除连击表扬文本及其相关动画。 */
  clearComboPraiseText(): void {
    if (this.comboPraiseTween) {
      this.comboPraiseTween.stop();
      this.comboPraiseTween = null;
    }
    if (this.comboPraiseTimer) {
      this.comboPraiseTimer.remove(false);
      this.comboPraiseTimer = null;
    }
    if (this.comboPraiseText) {
      this.scene.tweens.killTweensOf(this.comboPraiseText);
      this.comboPraiseText.destroy();
      this.comboPraiseText = undefined;
    }
  }

  /**
   * 根据连击次数获取对应的表扬文本。
   * @param comboCount 连击次数
   * @returns 表扬文本，如果不需要显示则返回 null
   */
  getComboPraiseMessage(comboCount: number): string | null {
    const c = Math.max(0, Math.floor(comboCount || 0));
    if (c < 3) {
      return null;
    }

    if (c >= 15) {
      if (c === 15 || (c > 15 && (c - 15) % 3 === 0)) {
        const tiers = [
          "LEGENDARY!",
          "GODLIKE!",
          "UNREAL!",
          "PHENOMENAL!",
          "SUPREME!",
        ];
        const tierIndex = Math.floor((c - 15) / 3) % tiers.length;
        return tiers[tierIndex] ?? "LEGENDARY!";
      }
      return null;
    }

    switch (c) {
      case 3:
        return "GOOD!";
      case 4:
        return "NICE!";
      case 5:
        return "GREAT!";
      case 6:
        return "AWESOME!";
      case 7:
        return "AMAZING!";
      case 8:
        return "UNSTOPPABLE!";
      case 10:
        return "INCREDIBLE!";
      case 12:
        return "INSANE!";
      default:
        return null;
    }
  }

  /**
   * 在点击位置（或屏幕中央）显示连击表扬文本。
   * @param comboCount 当前连击次数
   * @param lastTapScreenX 上次点击的屏幕X坐标
   * @param lastTapScreenY 上次点击的屏幕Y坐标
   * @param hasLastTapScreenPos 点击位置是否有效
   */
  maybeShowComboPraiseText(
    comboCount: number,
    lastTapScreenX: number,
    lastTapScreenY: number,
    hasLastTapScreenPos: boolean,
  ): void {
    const message = this.getComboPraiseMessage(comboCount);
    if (!message) {
      return;
    }

    const c = Math.max(0, Math.floor(comboCount || 0));
    if (c === this.comboPraiseLastShownComboCount) {
      return;
    }
    this.comboPraiseLastShownComboCount = c;

    this.clearComboPraiseText();

    const layout = computeUiLayout(this.scene);
    const { centerX, uiScale, vScale } = layout;

    const baseX = hasLastTapScreenPos ? lastTapScreenX : centerX;
    const baseY = hasLastTapScreenPos
      ? lastTapScreenY - 30 * uiScale
      : GAME_TOP_UI_BAR_HEIGHT * vScale + 180 * vScale;

    const hint = this.scene.add.text(baseX, baseY + 14 * uiScale, message, {
      fontFamily: "Poppins, Arial, sans-serif",
      fontSize: `${26 * uiScale}px`,
      color: "#1184ff",
      fontStyle: "bold",
      align: "center",
    });

    hint.setOrigin(0.5, 0.5);
    hint.setScale(0.6);
    hint.setScrollFactor(0);
    hint.setDepth(1700);
    hint.setAlpha(0.98);

    // 简洁描边
    hint.setStroke("#FFFFFF", 2 * uiScale);

    // 蓝色发光效果
    hint.setShadow(0, 0, "#1184ff", 2 * uiScale, true, false);

    this.comboPraiseText = hint;

    /** 清理表扬文本 */
    const cleanup = () => {
      if (this.comboPraiseText === hint) {
        this.comboPraiseText = undefined;
      }
      this.comboPraiseTween = null;
      if (this.comboPraiseTimer) {
        this.comboPraiseTimer.remove(false);
        this.comboPraiseTimer = null;
      }
      hint.destroy();
    };

    const finalY = baseY;
    const popStartY = baseY + 10 * uiScale;
    hint.y = popStartY;

    // 弹出动画：从下方弹出 -> 缩放回弹 -> 延迟后淡出上移
    this.comboPraiseTween = this.scene.tweens.add({
      targets: hint,
      y: finalY,
      alpha: 1,
      scale: 1.12,
      duration: 90,
      ease: "Back.Out",
      onComplete: () => {
        this.comboPraiseTween = this.scene.tweens.add({
          targets: hint,
          scale: 1,
          duration: 60,
          ease: "Sine.Out",
          onComplete: () => {
            this.comboPraiseTween = null;
            this.comboPraiseTimer = this.scene.time.delayedCall(260, () => {
              this.comboPraiseTimer = null;
              this.comboPraiseTween = this.scene.tweens.add({
                targets: hint,
                y: finalY - 70 * uiScale,
                alpha: 0,
                duration: 360,
                ease: "Cubic.In",
                onComplete: cleanup,
              });
            });
          },
        });
      },
    });
  }
}