/**
 * sotc-damage-wizard | DamageWizardApp.js
 *
 * Fenêtre Application FoundryVTT gérant la résolution des dégâts.
 * Utilise le moteur DamageEngine.resolveClash() qui implémente les
 * règles officielles SotC (séquence linéaire, counter-dice, PE, etc.)
 */

import {
  getAssignedSkill,
  getSkillDice,
  resolveDie,
  resolveClash,
  applyClashResults,
  sendResultToChat,
} from "./DamageEngine.js";

/**
 * Cache statique des résultats : persiste entre fermetures/réouvertures.
 * Clé : attackerCombatantId
 * Valeur : { atkRolls, defRolls, clashResult }
 */
export const _rollCache = new Map();

export class DamageWizardApp extends Application {

  constructor(attackerCombatantId, defenderCombatantId, isClash = false, options = {}) {
    super(options);
    this.attackerCombatantId = attackerCombatantId;
    this.defenderCombatantId = defenderCombatantId;
    this.isClash             = isClash;

    // Restaurer depuis le cache si déjà rollé
    const cached = _rollCache.get(attackerCombatantId);
    this._atkRolls    = cached?.atkRolls    ?? null;
    this._defRolls    = cached?.defRolls    ?? null;
    this._clashResult = cached?.clashResult ?? null;
  }

  /* ------------------------------------------------------------------ */
  /*  defaultOptions                                                     */
  /* ------------------------------------------------------------------ */

  static get defaultOptions() {
    return foundry.utils.mergeObject(super.defaultOptions, {
      id:        "sotc-dw-app",
      template:  "modules/sotc-damage-wizard/templates/damage-wizard.hbs",
      classes:   ["sotc-dw-window"],
      width:     820,
      height:    "auto",
      resizable: false,
      popOut:    true,
    });
  }

  /* ------------------------------------------------------------------ */
  /*  Accesseurs                                                         */
  /* ------------------------------------------------------------------ */

  get attackerCombatant() { return game.combat?.combatants.get(this.attackerCombatantId) ?? null; }
  get defenderCombatant() { return game.combat?.combatants.get(this.defenderCombatantId) ?? null; }
  get attackerActor()     { return this.attackerCombatant?.actor ?? null; }
  get defenderActor()     { return this.defenderCombatant?.actor ?? null; }

  /* ------------------------------------------------------------------ */
  /*  _buildSideData                                                     */
  /* ------------------------------------------------------------------ */

  _buildSideData(combatant) {
    if (!combatant) return null;
    const actor = combatant.actor;
    if (!actor) return null;
    const sys   = actor.system;
    const skill = getAssignedSkill(combatant);
    const dice  = skill ? getSkillDice(skill) : [];

    return {
      combatantId:    combatant.id,
      actorId:        actor.id,
      name:           combatant.name,
      img:            actor.img,
      hpValue:        sys.health?.value  ?? 0,
      hpMax:          sys.health?.max    ?? 1,
      hpPercent:      Math.round(((sys.health?.value ?? 0) / (sys.health?.max ?? 1)) * 100),
      staggerValue:   sys.stagger?.value ?? 0,
      staggerMax:     sys.stagger?.max   ?? 1,
      staggerPercent: Math.round(((sys.stagger?.value ?? 0) / (sys.stagger?.max ?? 1)) * 100),
      lightValue:     sys.light?.value   ?? 0,
      lightMax:       sys.light?.max     ?? 1,
      emotion:        sys.emotion        ?? 0,
      skillName:      skill?.name        ?? null,
      skillImg:       skill?.img         ?? null,
      dice,
    };
  }

  /* ------------------------------------------------------------------ */
  /*  getData                                                            */
  /* ------------------------------------------------------------------ */

  async getData(options = {}) {
    const attacker = this._buildSideData(this.attackerCombatant);
    const defender = this._buildSideData(this.defenderCombatant);
    const hasRolled = !!this._clashResult;

    // ── Construire les lignes de matchup pour le template ──────────────
    let matchupRows = null;
    let summaryAtk  = null;
    let summaryDef  = null;
    let summaryPE   = null;

    if (this._clashResult) {
      const r = this._clashResult;

      matchupRows = r.matchups.map(m => ({
        side:              m.side,
        dieType:           m.dieType,
        power:             m.power,
        formulaDisplay:    m.formulaDisplay,
        oppType:           m.oppType,
        oppPower:          m.oppPower,
        oppFormulaDisplay: m.oppFormulaDisplay ?? null,
        clashType:         m.clashType,
        verdict:           m.verdict,
        effects:           m.effects,
      }));

      // Résumé dégâts
      summaryAtk = {
        name:    attacker?.name ?? "?",
        hpDmg:   r.atkHpDamage,
        stgDmg:  r.atkStaggerDamage,
        stgGain: r.defStaggerRegain,  // regain du défenseur (evade win)
      };
      summaryDef = {
        name:    attacker?.name ?? "?",    // dégâts SUR l'attaquant
        hpDmg:   r.defHpDamage,
        stgDmg:  r.defStaggerDamage,
        stgGain: r.atkStaggerRegain,
      };
      summaryPE = { atkPE: r.atkPE, defPE: r.defPE };
    }

    return {
      isClash:    this.isClash,
      attacker,
      defender,
      hasRolled,
      matchupRows,
      summaryAtk,
      summaryDef,
      summaryPE,
      clashResult: this._clashResult,
    };
  }

  /* ------------------------------------------------------------------ */
  /*  activateListeners                                                  */
  /* ------------------------------------------------------------------ */

  activateListeners(html) {
    super.activateListeners(html);
    html.find(".dw-foot-roll").click(()  => this._onRoll());
    html.find(".dw-foot-apply").click(() => this._onApply());
    html.find(".dw-foot-cancel").click(() => this.close());
  }

  /* ------------------------------------------------------------------ */
  /*  Roll                                                               */
  /* ------------------------------------------------------------------ */

  async _onRoll() {
    if (this._clashResult) {
      ui.notifications.warn(game.i18n.localize("SOTC_DW.AlreadyRolled"));
      return;
    }

    const atkActor = this.attackerActor;
    const defActor = this.defenderActor;
    if (!atkActor || !defActor) return;

    const atkSkill = getAssignedSkill(this.attackerCombatant);
    if (!atkSkill) {
      ui.notifications.warn(game.i18n.localize("SOTC_DW.NoSkill"));
      return;
    }

    // ── Roll attaquant ─────────────────────────────────────────────────
    const atkDice = getSkillDice(atkSkill);
    this._atkRolls = [];
    for (const die of atkDice) {
      const res = await resolveDie(die, atkActor);
      this._atkRolls.push({ die, ...res });
    }

    // ── Roll défenseur (clash uniquement) ──────────────────────────────
    this._defRolls = [];
    if (this.isClash) {
      const defSkill = getAssignedSkill(this.defenderCombatant);
      if (defSkill) {
        for (const die of getSkillDice(defSkill)) {
          const res = await resolveDie(die, defActor);
          this._defRolls.push({ die, ...res });
        }
      }
    }

    // ── Résolution des clashes ─────────────────────────────────────────
    this._clashResult = resolveClash(this._atkRolls, this._defRolls, defActor, atkActor);

    // Persister dans le cache
    _rollCache.set(this.attackerCombatantId, {
      atkRolls:    this._atkRolls,
      defRolls:    this._defRolls,
      clashResult: this._clashResult,
    });

    this.render(false);
  }

  /* ------------------------------------------------------------------ */
  /*  Apply                                                              */
  /* ------------------------------------------------------------------ */

  async _onApply() {
    if (!this._clashResult) {
      ui.notifications.warn(game.i18n.localize("SOTC_DW.RollFirst"));
      return;
    }

    const atkActor = this.attackerActor;
    const defActor = this.defenderActor;
    if (!atkActor || !defActor) return;

    // Appliquer tous les effets (dégâts, PE, états des dés)
    await applyClashResults(
      this._clashResult,
      atkActor,
      defActor,
      this.attackerCombatant,
      this.defenderCombatant
    );

    // Message de chat
    const atkSkill = getAssignedSkill(this.attackerCombatant);
    await sendResultToChat({
      attackerName: this.attackerCombatant?.name ?? "?",
      defenderName: this.defenderCombatant?.name ?? "?",
      skillName:    atkSkill?.name ?? "?",
      result:       this._clashResult,
    });

    ui.notifications.info(game.i18n.localize("SOTC_DW.DamageApplied"));

    // Vider le cache et réinitialiser l'état local
    _rollCache.delete(this.attackerCombatantId);
    this._atkRolls    = null;
    this._defRolls    = null;
    this._clashResult = null;
    this.render(false);
  }
}