import { ReactiveScene } from "boardgame-phaser";
import { spawnEffect, type Spawner } from "boardgame-phaser";
import { mutableSignal } from "boardgame-core";
import { type CombatState } from "boardgame-core/samples/slay-the-spire-like";
import { createCombatState } from "@/state/combatState";
import { createButton } from "@/utils/createButton";
import { SceneKey } from "./types";
import {
  CombatUnitContainer,
  type CombatUnitData,
} from "@/gameobjects/CombatUnitContainer";

export class CombatTestScene extends ReactiveScene {
  private combatSignal = mutableSignal<CombatState | null>(null);

  constructor() {
    super("CombatTestScene");
  }

  create(): void {
    super.create();
    const { width, height } = this.scale;

    const module = createCombatState();
    this.combatSignal.value = module.createInitialState();

    this.add
      .text(width / 2, 30, "Combat State Test", {
        fontSize: "24px",
        color: "#ffffff",
        fontStyle: "bold",
      })
      .setOrigin(0.5);

    this.add
      .text(width / 2, 60, "Player & Enemies with Buffs / HP", {
        fontSize: "14px",
        color: "#aaaaaa",
      })
      .setOrigin(0.5);

    const unitSpawner: Spawner<CombatUnitData, CombatUnitContainer> = {
      getData: () => this.generateUnitData(),
      getKey: (t) => t.key,
      onSpawn: (t) => this.spawnUnit(t, width, height),
      onUpdate: (t, obj) => obj.updateFromData(t),
      onDespawn: (obj) => obj.destroy(),
    };

    const disposeSpawner = spawnEffect(unitSpawner);
    this.disposables.add(disposeSpawner);

    this.createControls(width, height);
  }

  private generateUnitData(): CombatUnitData[] {
    const combat = this.combatSignal.value;
    if (!combat) return [];

    const units: CombatUnitData[] = [
      {
        key: "player",
        entity: combat.player,
        name: "Player",
        isPlayer: true,
      },
    ];

    combat.enemies.forEach((enemy, i) => {
      units.push({
        key: `enemy-${i}`,
        entity: enemy,
        name: enemy.enemy.name,
        isPlayer: false,
      });
    });

    return units;
  }

  private spawnUnit(
    t: CombatUnitData,
    width: number,
    height: number,
  ): CombatUnitContainer | null {
    const combat = this.combatSignal.value;
    if (!combat) return null;

    const totalUnits = 1 + combat.enemies.length;
    const spacing = 220;
    const totalWidth = (totalUnits - 1) * spacing;
    const startX = width / 2 - totalWidth / 2;

    let x = startX;
    if (t.key.startsWith("enemy-")) {
      const index = parseInt(t.key.replace("enemy-", ""), 10);
      x = startX + (index + 1) * spacing;
    }

    const container = new CombatUnitContainer(this, x, height / 2, t);
    container.playSpawnEffect();
    return container;
  }

  private createControls(width: number, height: number): void {
    createButton({
      scene: this,
      label: "返回菜单",
      x: 100,
      y: 40,
      onClick: async () => {
        await this.sceneController.launch(SceneKey.IndexScene);
      },
    });

    createButton({
      scene: this,
      label: "Damage Player",
      x: width - 520,
      y: height - 40,
      onClick: () => {
        this.combatSignal.produce((draft) => {
          if (!draft) return;
          draft.player.hp = Math.max(0, draft.player.hp - 5);
          if (draft.player.hp <= 0) draft.player.isAlive = false;
        });
      },
    });

    createButton({
      scene: this,
      label: "Damage Enemy",
      x: width - 380,
      y: height - 40,
      onClick: () => {
        this.combatSignal.produce((draft) => {
          if (!draft) return;
          const enemy = draft.enemies[0];
          if (enemy) {
            enemy.hp = Math.max(0, enemy.hp - 5);
            if (enemy.hp <= 0) enemy.isAlive = false;
          }
        });
      },
    });

    createButton({
      scene: this,
      label: "Heal Player",
      x: width - 240,
      y: height - 40,
      onClick: () => {
        this.combatSignal.produce((draft) => {
          if (!draft) return;
          draft.player.hp = Math.min(draft.player.maxHp, draft.player.hp + 5);
          if (draft.player.hp > 0) draft.player.isAlive = true;
        });
      },
    });

    createButton({
      scene: this,
      label: "Add Buff",
      x: width - 100,
      y: height - 40,
      onClick: () => {
        this.combatSignal.produce((draft) => {
          if (!draft) return;
          const current = draft.player.effects["strength"];
          draft.player.effects["strength"] = {
            data: {
              id: "strength",
              name: "Strength",
              description: "Deal +1 damage per stack",
              lifecycle: "temporary",
            },
            stacks: (current?.stacks ?? 0) + 1,
          };
        });
      },
    });
  }
}