import { LitElement, html } from "lit";
import { customElement, state } from "lit/decorators.js";
import { EventBus } from "../../../core/EventBus";
import { Gold } from "../../../core/game/Game";
import { GameView } from "../../../core/game/GameView";
import { ClientID } from "../../../core/Schemas";
import { AttackRatioEvent } from "../../InputHandler";
import { renderNumber, renderTroops } from "../../Utils";
import { UIState } from "../UIState";
import { Layer } from "./Layer";
import goldCoinIcon from "/images/GoldCoinIcon.svg?url";
import soldierIcon from "/images/SoldierIcon.svg?url";
import swordIcon from "/images/SwordIcon.svg?url";

@customElement("control-panel")
export class ControlPanel extends LitElement implements Layer {
  public game: GameView;
  public clientID: ClientID;
  public eventBus: EventBus;
  public uiState: UIState;

  @state()
  private attackRatio: number = 0.2;

  @state()
  private _maxTroops: number;

  @state()
  private troopRate: number;

  @state()
  private _troops: number;

  @state()
  private _isVisible = false;

  @state()
  private _gold: Gold;

  @state()
  private _attackingTroops: number = 0;

  private _troopRateIsIncreasing: boolean = true;

  private _lastTroopIncreaseRate: number;

  getTickIntervalMs() {
    return 100;
  }

  init() {
    this.attackRatio = Number(
      localStorage.getItem("settings.attackRatio") ?? "0.2",
    );
    this.uiState.attackRatio = this.attackRatio;
    this.eventBus.on(AttackRatioEvent, (event) => {
      let newAttackRatio = this.attackRatio + event.attackRatio / 100;

      if (newAttackRatio < 0.01) {
        newAttackRatio = 0.01;
      }

      if (newAttackRatio > 1) {
        newAttackRatio = 1;
      }

      if (newAttackRatio === 0.11 && this.attackRatio === 0.01) {
        // If we're changing the ratio from 1%, then set it to 10% instead of 11% to keep a consistency
        newAttackRatio = 0.1;
      }

      this.attackRatio = newAttackRatio;
      this.onAttackRatioChange(this.attackRatio);
    });
  }

  tick() {
    if (!this._isVisible && !this.game.inSpawnPhase()) {
      this.setVisibile(true);
    }

    const player = this.game.myPlayer();
    if (player === null || !player.isAlive()) {
      this.setVisibile(false);
      return;
    }

    this.updateTroopIncrease();

    this._maxTroops = this.game.config().maxTroops(player);
    this._gold = player.gold();
    this._troops = player.troops();
    this._attackingTroops = player
      .outgoingAttacks()
      .map((a) => a.troops)
      .reduce((a, b) => a + b, 0);
    this.troopRate = this.game.config().troopIncreaseRate(player) * 10;
    this.requestUpdate();
  }

  private updateTroopIncrease() {
    const player = this.game?.myPlayer();
    if (player === null) return;
    const troopIncreaseRate = this.game.config().troopIncreaseRate(player);
    this._troopRateIsIncreasing =
      troopIncreaseRate >= this._lastTroopIncreaseRate;
    this._lastTroopIncreaseRate = troopIncreaseRate;
  }

  onAttackRatioChange(newRatio: number) {
    this.uiState.attackRatio = newRatio;
  }

  renderLayer(context: CanvasRenderingContext2D) {
    // Render any necessary canvas elements
  }

  shouldTransform(): boolean {
    return false;
  }

  setVisibile(visible: boolean) {
    this._isVisible = visible;
    this.requestUpdate();
  }

  private handleRatioSliderInput(e: Event) {
    const value = Number((e.target as HTMLInputElement).value);
    this.attackRatio = value / 100;
    this.onAttackRatioChange(this.attackRatio);
  }

  private calculateTroopBar(): { greenPercent: number; orangePercent: number } {
    const base = Math.max(this._maxTroops, 1);
    const greenPercentRaw = (this._troops / base) * 100;
    const orangePercentRaw = (this._attackingTroops / base) * 100;

    const greenPercent = Math.max(0, Math.min(100, greenPercentRaw));
    const orangePercent = Math.max(
      0,
      Math.min(100 - greenPercent, orangePercentRaw),
    );

    return { greenPercent, orangePercent };
  }

  private renderMobileTroopBar() {
    const { greenPercent, orangePercent } = this.calculateTroopBar();
    return html`
      <div
        class="w-full h-6 border border-gray-600 rounded-md bg-gray-900/60 overflow-hidden relative"
      >
        <div class="h-full flex">
          ${greenPercent > 0
            ? html`<div
                class="h-full bg-green-500 transition-[width] duration-200"
                style="width: ${greenPercent}%;"
              ></div>`
            : ""}
          ${orangePercent > 0
            ? html`<div
                class="h-full bg-orange-400 transition-[width] duration-200"
                style="width: ${orangePercent}%;"
              ></div>`
            : ""}
        </div>
        <div
          class="absolute inset-0 flex items-center justify-between px-1.5 text-xs font-bold leading-none pointer-events-none"
          translate="no"
        >
          <span class="text-white drop-shadow-[0_1px_1px_rgba(0,0,0,0.8)]"
            >${renderTroops(this._troops)}</span
          >
          <span class="text-white drop-shadow-[0_1px_1px_rgba(0,0,0,0.8)]"
            >${renderTroops(this._maxTroops)}</span
          >
        </div>
        <div
          class="absolute inset-0 flex items-center justify-center gap-0.5 pointer-events-none"
          translate="no"
        >
          <img
            src=${soldierIcon}
            alt=""
            aria-hidden="true"
            width="12"
            height="12"
            class="brightness-0 invert drop-shadow-[0_1px_1px_rgba(0,0,0,0.8)]"
          />
          <span
            class="text-[10px] font-bold drop-shadow-[0_1px_1px_rgba(0,0,0,0.8)] ${this
              ._troopRateIsIncreasing
              ? "text-green-400"
              : "text-orange-400"}"
            >+${renderTroops(this.troopRate)}/s</span
          >
        </div>
      </div>
    `;
  }

  private renderDesktopTroopBar() {
    const { greenPercent, orangePercent } = this.calculateTroopBar();
    return html`
      <div
        class="w-full h-6 border border-gray-600 rounded-md bg-gray-900/60 overflow-hidden relative"
      >
        <div class="h-full flex">
          ${greenPercent > 0
            ? html`<div
                class="h-full bg-green-500 transition-[width] duration-200"
                style="width: ${greenPercent}%;"
              ></div>`
            : ""}
          ${orangePercent > 0
            ? html`<div
                class="h-full bg-orange-400 transition-[width] duration-200"
                style="width: ${orangePercent}%;"
              ></div>`
            : ""}
        </div>
        <div
          class="absolute inset-0 flex items-center justify-start px-1.5 text-xs font-bold leading-none pointer-events-none gap-0.5"
          translate="no"
        >
          <span class="text-white drop-shadow-[0_1px_1px_rgba(0,0,0,0.8)]"
            >${renderTroops(this._troops)}</span
          >
          <span class="text-white/60 drop-shadow-[0_1px_1px_rgba(0,0,0,0.8)]"
            >/</span
          >
          <span class="text-white drop-shadow-[0_1px_1px_rgba(0,0,0,0.8)]"
            >${renderTroops(this._maxTroops)}</span
          >
        </div>
      </div>
    `;
  }

  private renderDesktop() {
    return html`
      <!-- Row 1: troop rate | troop bar | gold -->
      <div class="flex gap-1.5 items-center mb-1.5">
        <!-- Troop rate -->
        <div
          class="flex items-center gap-1 shrink-0 border rounded-md font-bold text-xs p-1 w-[5.5rem] ${this
            ._troopRateIsIncreasing
            ? "border-green-400"
            : "border-orange-400"}"
          translate="no"
        >
          <img
            src=${soldierIcon}
            alt=""
            aria-hidden="true"
            width="13"
            height="13"
            class="shrink-0"
            style="filter: ${this._troopRateIsIncreasing
              ? "brightness(0) saturate(100%) invert(74%) sepia(44%) saturate(500%) hue-rotate(83deg) brightness(103%)"
              : "brightness(0) saturate(100%) invert(65%) sepia(60%) saturate(600%) hue-rotate(330deg) brightness(105%)"}"
          />
          <span
            class="text-xs font-bold tabular-nums ${this._troopRateIsIncreasing
              ? "text-green-400"
              : "text-orange-400"}"
            >+${renderTroops(this.troopRate)}/s</span
          >
        </div>
        <!-- Troop bar -->
        <div class="flex-1">${this.renderDesktopTroopBar()}</div>
        <!-- Gold -->
        <div
          class="flex items-center gap-1 shrink-0 border rounded-md border-yellow-400 font-bold text-yellow-400 text-xs p-1 w-[4.5rem]"
          translate="no"
        >
          <img src=${goldCoinIcon} width="13" height="13" class="shrink-0" />
          <span class="tabular-nums">${renderNumber(this._gold)}</span>
        </div>
      </div>
      <!-- Row 2: attack ratio | slider -->
      <div class="flex items-center gap-2" translate="no">
        <div
          class="flex items-center gap-1 shrink-0 border border-gray-600 rounded-md p-1 text-xs font-bold text-white cursor-pointer w-[7rem]"
        >
          <img
            src=${swordIcon}
            alt=""
            aria-hidden="true"
            width="12"
            height="12"
            style="filter: brightness(0) invert(1);"
          />
          <span
            >${(this.attackRatio * 100).toFixed(0)}%
            (${renderTroops(
              (this.game?.myPlayer()?.troops() ?? 0) * this.attackRatio,
            )})</span
          >
        </div>
        <input
          type="range"
          min="1"
          max="100"
          .value=${String(Math.round(this.attackRatio * 100))}
          @input=${(e: Event) => this.handleRatioSliderInput(e)}
          class="flex-1 h-2 accent-blue-500 cursor-pointer"
        />
      </div>
    `;
  }

  private renderMobile() {
    return html`
      <div class="flex gap-2 items-center">
        <!-- Gold -->
        <div
          class="flex items-center justify-center p-1 gap-0.5 border rounded-md border-yellow-400 font-bold text-yellow-400 text-xs w-1/5 shrink-0"
          translate="no"
        >
          <img src=${goldCoinIcon} width="13" height="13" />
          <span class="px-0.5">${renderNumber(this._gold)}</span>
        </div>
        <!-- Troop bar -->
        <div class="w-[40%] shrink-0 flex items-center">
          ${this.renderMobileTroopBar()}
        </div>
        <!-- Sword + % label -->
        <div class="flex flex-col items-center shrink-0 gap-0.5" translate="no">
          <img
            src=${swordIcon}
            alt=""
            aria-hidden="true"
            width="10"
            height="10"
            style="filter: brightness(0) invert(1);"
          />
          <span class="text-white text-xs font-bold tabular-nums"
            >${(this.attackRatio * 100).toFixed(0)}%</span
          >
        </div>
        <!-- Attack ratio slider -->
        <div class="flex-1" translate="no">
          <input
            type="range"
            min="1"
            max="100"
            .value=${String(Math.round(this.attackRatio * 100))}
            @input=${(e: Event) => this.handleRatioSliderInput(e)}
            class="w-full h-1.5 accent-blue-500 cursor-pointer"
          />
        </div>
      </div>
    `;
  }

  render() {
    return html`
      <div
        class="relative pointer-events-auto ${this._isVisible
          ? "relative w-full text-sm px-2 py-1.5"
          : "hidden"}"
        @contextmenu=${(e: MouseEvent) => e.preventDefault()}
      >
        <div class="lg:hidden">${this.renderMobile()}</div>
        <div class="hidden lg:block">${this.renderDesktop()}</div>
      </div>
    `;
  }

  createRenderRoot() {
    return this; // Disable shadow DOM to allow Tailwind styles
  }
}