/**
 * Célestopol 1922 — Système FoundryVTT
 *
 * Célestopol 1922 est un jeu de rôle édité par Antre-Monde Éditions.
 * Ce système FoundryVTT est une implémentation indépendante et n'est pas
 * affilié à Antre-Monde Éditions,
 * mais a été réalisé avec l'autorisation d'Antre-Monde Éditions.
 *
 * @author    LeRatierBretonnien
 * @copyright 2025–2026 LeRatierBretonnien
 * @license   CC BY-NC-SA 4.0 – https://creativecommons.org/licenses/by-nc-sa/4.0/
 */

import { SYSTEM } from "../../config/system.mjs"

const { HandlebarsApplicationMixin } = foundry.applications.api

export default class CelestopolActorSheet extends HandlebarsApplicationMixin(foundry.applications.sheets.ActorSheetV2) {
  static SHEET_MODES = { EDIT: 0, PLAY: 1 }

  constructor(options = {}) {
    super(options)
    this.#dragDrop = this.#createDragDropHandlers()
  }

  #dragDrop

  /** @override */
  static DEFAULT_OPTIONS = {
    classes: ["fvtt-celestopol", "actor"],
    position: { width: 900, height: "auto" },
    form: { submitOnChange: true },
    window: { resizable: true },
    dragDrop: [{ dragSelector: '[data-drag="true"], .rollable', dropSelector: null }],
    actions: {
      editImage:     CelestopolActorSheet.#onEditImage,
      sendBiographyPortrait: CelestopolActorSheet.#onSendBiographyPortrait,
      toggleSheet:   CelestopolActorSheet.#onToggleSheet,
      edit:          CelestopolActorSheet.#onItemEdit,
      delete:        CelestopolActorSheet.#onItemDelete,
      attack:        CelestopolActorSheet.#onAttack,
      rangedDefense: CelestopolActorSheet.#onRangedDefense,
      trackBox:      CelestopolActorSheet.#onTrackBox,
      skillLevel:    CelestopolActorSheet.#onSkillLevel,
      factionLevel:  CelestopolActorSheet.#onFactionLevel,
      toggleArmure:  CelestopolActorSheet.#onToggleArmure,
    },
  }

  _sheetMode = this.constructor.SHEET_MODES.PLAY

  get isPlayMode() { return this._sheetMode === this.constructor.SHEET_MODES.PLAY }
  get isEditMode() { return this._sheetMode === this.constructor.SHEET_MODES.EDIT }

  /** @override */
  async _prepareContext() {
    return {
      fields:       this.document.schema.fields,
      systemFields: this.document.system.schema.fields,
      actor:        this.document,
      system:       this.document.system,
      source:       this.document.toObject(),
      isGM:         game.user.isGM,
      isEditMode:   this.isEditMode,
      isPlayMode:   this.isPlayMode,
      isEditable:   this.isEditable,
      woundLevels:  SYSTEM.WOUND_LEVELS,
    }
  }

  /** @override */
  _onRender(context, options) {
    this.#dragDrop.forEach(d => d.bind(this.element))
    this.element.querySelectorAll(".rollable").forEach(el => {
      el.addEventListener("click", this._onRoll.bind(this))
    })
  }

  async _onRoll(event) {
    if (!this.isPlayMode) return
    const el = event.currentTarget
    const statId  = el.dataset.statId
    const skillId = el.dataset.skillId
    if (!statId) return
    if (!skillId) {
      // Test de résistance (clic sur la zone TR de la stat)
      await this.document.system.rollResistance(statId)
      return
    }
    await this.document.system.roll(statId, skillId)
  }

  #createDragDropHandlers() {
    return this.options.dragDrop.map(d => {
      d.permissions = {
        dragstart: this._canDragStart.bind(this),
        drop:      this._canDragDrop.bind(this),
      }
      d.callbacks = {
        dragover: this._onDragOver.bind(this),
        drop:     this._onDrop.bind(this),
      }
      return new foundry.applications.ux.DragDrop.implementation(d)
    })
  }

  _canDragStart()  { return this.isEditable }
  _canDragDrop()   { return true }
  _onDragOver()    {}

  async _onDrop(event) {
    if (!this.isEditable) return
    const data = foundry.applications.ux.TextEditor.implementation.getDragEventData(event)
    if (data.type === "Item") {
      const item = await fromUuid(data.uuid)
      if (item) return this._onDropItem(item)
    }
  }

  async _onDropItem(item) {
    if (item.type === "anomaly" && this.document.itemTypes.anomaly.length > 0) {
      ui.notifications.warn(game.i18n.localize("CELESTOPOL.Anomaly.maxAnomaly"))
      return
    }
    await this.document.createEmbeddedDocuments("Item", [item.toObject()], { renderSheet: false })
  }

  static async #onEditImage(event, _target) {
    const current = this.document.img
    const fp = new FilePicker({
      current,
      type: "image",
      callback: (path) => this.document.update({ img: path }),
      top:  this.position.top + 40,
      left: this.position.left + 10,
    })
    return fp.browse()
  }

  static async #onSendBiographyPortrait() {
    const portrait = this.document.system?.portraitImage || ""
    if (!portrait) {
      ui.notifications.warn(game.i18n.localize("CELESTOPOL.Actor.portraitImageMissing"))
      return
    }

    const rawContent = `
      <div class="cel-portrait-message chat-system-card">
        <div class="portrait-message-header">
          <span class="portrait-message-mark">✦</span>
          <span class="portrait-message-title">${game.i18n.localize("CELESTOPOL.Actor.portraitChatTitle")}</span>
        </div>
        <div class="portrait-message-body">
          <div class="portrait-message-name">${foundry.utils.escapeHTML(this.document.name)}</div>
          <div class="portrait-message-frame">
            <img src="${portrait}" alt="${foundry.utils.escapeHTML(this.document.name)}" class="portrait-message-image">
          </div>
        </div>
      </div>
    `

    await ChatMessage.create({
      speaker: ChatMessage.getSpeaker({ actor: this.document }),
      style: CONST.CHAT_MESSAGE_STYLES.OTHER,
      content: await foundry.applications.ux.TextEditor.implementation.enrichHTML(rawContent, { async: true }),
    })
  }

  static #onToggleSheet() {
    const modes = this.constructor.SHEET_MODES
    this._sheetMode = this.isEditMode ? modes.PLAY : modes.EDIT
    this.render()
  }

  static async #onItemEdit(event, target) {
    const uuid = target.getAttribute("data-item-uuid")
    const id   = target.getAttribute("data-item-id")
    const item = uuid ? await fromUuid(uuid) : this.document.items.get(id)
    item?.sheet.render(true)
  }

  static async #onItemDelete(event, target) {
    const uuid = target.getAttribute("data-item-uuid")
    const item = await fromUuid(uuid)
    await item?.deleteDialog()
  }

  static async #onAttack(_event, target) {
    const itemId = target.getAttribute("data-item-id")
    if (!itemId) return
    await this.document.system.rollAttack(itemId)
  }

  static async #onRangedDefense(_event, target) {
    const itemId = target.getAttribute("data-item-id")
    if (!itemId) return
    await this.document.system.rollRangedDefense(itemId)
  }

  /** Met à jour une jauge de piste (blessures/destin/spleen) par clic sur une case. */
  static #onTrackBox(_event, target) {
    if (!this.isEditable) return
    const path    = target.dataset.path
    const index   = parseInt(target.dataset.index)
    const current = foundry.utils.getProperty(this.document, path) ?? 0
    const newValue = (index <= current) ? index - 1 : index
    this.document.update({ [path]: Math.max(0, newValue) })
  }

  /** Met à jour la valeur d'un domaine par clic sur un point de niveau. */
  static #onSkillLevel(_event, target) {
    if (!this.isEditable) return
    const { statId, skillId } = target.dataset
    const index   = parseInt(target.dataset.index)
    const current = this.document.system.stats[statId]?.[skillId]?.value ?? 0
    const newValue = (index <= current) ? index - 1 : index
    this.document.update({ [`system.stats.${statId}.${skillId}.value`]: Math.max(0, newValue) })
  }

  /** Met à jour le score d'une faction par clic sur un point. */
  static async #onToggleArmure(_event, target) {
    const uuid = target.closest('[data-item-uuid]')?.dataset.itemUuid
    if (!uuid) return
    const item = await fromUuid(uuid)
    if (item?.type === "armure") await item.update({ "system.equipped": !item.system.equipped })
  }

  static #onFactionLevel(_event, target) {
    if (!this.isEditable) return
    const factionId = target.dataset.faction
    const index     = parseInt(target.dataset.index)      // 0-8
    const newValue  = index - 4                           // -4 à +4
    const current   = this.document.system.factions[factionId]?.value ?? 0
    // Cliquer sur le dot actif (sauf neutre) remet à 0
    const finalValue = (newValue === current && newValue !== 0) ? 0 : newValue
    this.document.update({ [`system.factions.${factionId}.value`]: finalValue })
  }
}