import { onManageActiveEffect, prepareActiveEffectCategories } from "../system/effects.mjs";
import { VermineActorSheet } from "./actor-sheet.mjs";
import { TotemPicker } from "../system/applications.mjs";

/**
 * Extend the basic ActorSheet for NPC type
 * @extends {VermineActorSheet}
 */
export class VermineNpcSheet extends VermineActorSheet {

  /** @override */
  static get defaultOptions() {
    return foundry.utils.mergeObject(super.defaultOptions, {
      classes: ["vermine2047", "sheet", "actor", "npc"],
      template: "systems/vermine2047/templates/actor/actor-sheet.hbs",
      width: 600,
      height: 700,
      tabs: [
        { navSelector: ".sheet-tabs", contentSelector: ".sheet-body", initial: "characteristics" }
      ]
    });
  }

  /** @override */
  get template() {
    return `systems/vermine2047/templates/actor/actor-${this.actor.type}-sheet.hbs`;
  }

  /* -------------------------------------------- */

  /** @override */
  getData() {
    // Retrieve the data structure from the base sheet.
    const context = super.getData();

    // Use a safe clone of the actor data for further operations.
    const actorData = this.actor.toObject(false);

    // Add the actor's data to context.data for easier access, as well as flags.
    context.system = actorData.system;
    context.flags = actorData.flags;
    context.config = CONFIG.VERMINE;

    // Prepare items for all actor types
    this._prepareItems(context);

    // Prepare NPC-specific data
    if (actorData.type === 'npc') {
      this._prepareNpcData(context);
    }

    // Add roll data for TinyMCE editors
    context.rollData = this.actor.getRollData();

    // Prepare active effects
    context.effects = prepareActiveEffectCategories(this.actor.effects);

    return context;
  }

  /**
   * Prepare NPC specific data
   */
  _prepareNpcData(context) {
    // Calculate derived values from threat, experience, and role
    const threat = CONFIG.VERMINE.npcThreatLevels[context.system.threat.value];
    const experience = CONFIG.VERMINE.npcExperienceLevels[context.system.experience.value];
    const role = CONFIG.VERMINE.npcRoleLevels[context.system.role.value];

    // Add calculated values to context for easier access
    context.threatData = threat;
    context.experienceData = experience;
    context.roleData = role;

    // Set wound thresholds based on threat level
    if (threat) {
      context.system.minorWound.threshold = threat.minorWound || context.system.minorWound.threshold;
      context.system.majorWound.threshold = threat.majorWound || context.system.majorWound.threshold;
      context.system.deadlyWound.threshold = threat.deadlyWound || context.system.deadlyWound.threshold;
      
      // Set max wounds
      context.system.minorWound.max = threat.minorWound || context.system.minorWound.max;
      context.system.majorWound.max = threat.majorWound || context.system.majorWound.max;
      context.system.deadlyWound.max = threat.deadlyWound || context.system.deadlyWound.max;
    }

    // Set reserve max values based on role
    if (role) {
      context.system.attributes.effort.max = role.pools || context.system.attributes.effort.max;
      context.system.attributes.self_control.max = role.reaction_bonus || context.system.attributes.self_control.max;
    }

    // Prepare abilities with labels
    for (let [k, v] of Object.entries(context.system.abilities)) {
      v.label = game.i18n.localize(CONFIG.VERMINE.abilities[k]) ?? k;
    }

    // Prepare skills with localized names
    for (let [k, v] of Object.entries(context.system.skills)) {
      const skillKey = `VERMINE.skill.${k}`;
      v.name = game.i18n.localize(skillKey);
      if (v.name === skillKey) {
        // Fallback to key if no translation
        v.name = k.charAt(0).toUpperCase() + k.slice(1);
      }
    }

    // Prepare skill categories
    for (let [k, v] of Object.entries(context.system.skill_categories)) {
      if (k !== 'preferred') {
        v.label = game.i18n.localize(v.label) ?? k;
      }
    }
  }

  /**
   * Organize and classify Items for NPC sheets.
   *
   * @param {Object} context - The context to prepare.
   */
  _prepareItems(context) {
    context.gear = this.actor.itemTypes['item'];
    context.weapons = this.actor.itemTypes['weapon'];
    context.defenses = this.actor.itemTypes['defense'];
    context.vehicles = this.actor.itemTypes['vehicle'];
    context.abilities = this.actor.itemTypes['ability'];
    context.specialties = this.actor.itemTypes['specialty'];
    context.backgrounds = this.actor.itemTypes['background'];
    context.traumas = this.actor.itemTypes['trauma'];
    context.evolutions = this.actor.itemTypes['evolution'];
  }

  /* -------------------------------------------- */

  /** @override */
  activateListeners(html) {
    super.activateListeners(html);

    // Choose Totem
    html.find('.chooseTotem').click(this._onTotemButton.bind(this));
  }

  /**
   * Handle totem pick
   * @param {Event} event - The originating click event
   * @private
   */
  _onTotemButton(event) {
    event.preventDefault();
    const el = event.currentTarget;
    const totemPicker = new TotemPicker(el, this.actor);
    totemPicker.render(true);
  }
}