import { ChatUtility } from "./chat-utility.js";
import { RdDItemArme } from "./item-arme.js";
import { RdDItemCompetence } from "./item-competence.js";
import { Misc } from "./misc.js";
import { RdDBonus } from "./rdd-bonus.js";
import { RdDResolutionTable } from "./rdd-resolution-table.js";
import { RdDRoll } from "./rdd-roll.js";

export class RdDCombat {

  /* -------------------------------------------- */
  static isActive() {
    return true;
  }

  /* -------------------------------------------- */
  static createUsingTarget(attacker) {
    const target = RdDCombat.getTarget();
    if (target == undefined) {
      ui.notifications.warn("Vous devez choisir une seule cible à attaquer!");
    }
    return this.create(attacker, target ? target.actor : undefined, target)
  }

  /* -------------------------------------------- */
  static getTarget() {
    if (game.user.targets && game.user.targets.size == 1) {
      for (let target of game.user.targets) {
        return target;
      }
    }
    return undefined;
  }

  /* -------------------------------------------- */
  static create(attacker, defender, target = undefined) {
    return new RdDCombat(attacker, defender, target)
  }

  /* -------------------------------------------- */
  static createForEvent(event) {
    let attackerId = event.currentTarget.attributes['data-attackerId'].value;
    let attacker = game.actors.get(attackerId);

    const dataDefenderTokenId = event.currentTarget.attributes['data-defenderTokenId'];
    if (dataDefenderTokenId) {
      let defenderToken = canvas.tokens.get(dataDefenderTokenId.value);
      let defender = defenderToken.actor;

      return this.create(attacker, defender);
    }
    return this.createUsingTarget(attacker)
  }

  /* -------------------------------------------- */
  constructor(attacker, defender, target) {
    this.attacker = attacker;
    this.defender = defender;
    this.target = target;
    this.attackerId = this.attacker.data._id;
    this.defenderId = this.defender.data._id;
    this.defenderTokenId = target ? target.data._id : undefined;
  }

  /* -------------------------------------------- */
  static registerChatCallbacks(html) {
    for (let button of ['#parer-button', '#esquiver-button', '#particuliere-attaque', '#encaisser-button']) {
      html.on("click", button, event => {
        event.preventDefault();
        RdDCombat.createForEvent(event).onEvent(button, event);
      });
    }
  }

  /* -------------------------------------------- */
  async onEvent(button, event) {
    let rollData = game.system.rdd.rollDataHandler[this.attackerId];
    if (!rollData) {
      ui.notifications.warn("Action automatisée impossible, le jet de l'attaquant a été perdu (suite à un raffraichissement?)")
      return;
    }
    switch (button) {
      case '#particuliere-attaque': return await this.choixParticuliere(rollData, event.currentTarget.attributes['data-mode'].value);
      case '#parer-button': return this.parade(rollData, event.currentTarget.attributes['data-armeid'].value);
      case '#esquiver-button': return this.esquive(rollData);
      case '#encaisser-button': return this.encaisser(rollData, event.currentTarget.attributes['data-defenderTokenId'].value);
    }
  }


  /* -------------------------------------------- */
  static isEchec(rollData) {
    switch (rollData.surprise) {
      case 'demi': return !rollData.rolled.isSign;
      case 'totale': return true;
    }
    return rollData.rolled.isEchec;
  }
  
  /* -------------------------------------------- */
  static isEchecTotal(rollData) {
    if (rollData.arme && rollData.surprise == 'demi') {
      return rollData.rolled.isEchec;
    }
    return rollData.rolled.isETotal;
  }
  
  /* -------------------------------------------- */
  static isParticuliere(rollData) {
    if (rollData.arme && rollData.surprise) {
      return false;
    }
    return rollData.rolled.isPart;
  }
  
  /* -------------------------------------------- */
  static isReussite(rollData) {
    switch (rollData.surprise) {
      case 'demi': return rollData.rolled.isSign;
      case 'totale': return false;
    }
    return rollData.rolled.isSuccess;
  }

  /* -------------------------------------------- */
  async attaque(competence, arme) {
    if (!await this.accorderEntite('avant-attaque')) {
      return;
    }

    let rollData = this._prepareAttaque(competence, arme);
    console.log("RdDCombat.attaque >>>", rollData);

    const dialog = await RdDRoll.create(this.attacker, rollData,
      { html: 'systems/foundryvtt-reve-de-dragon/templates/dialog-competence.html',
        options: { height: 540 } }, {
      name: 'jet-attaque',
      label: 'Attaque: ' + (arme ? arme.name : competence.name),
      callbacks: [
        this.attacker.createCallbackExperience(),
        { condition: RdDCombat.isParticuliere, action: r => this._onAttaqueParticuliere(r) },
        { condition: r => (RdDCombat.isReussite(r) && !RdDCombat.isParticuliere(r)), action: r => this._onAttaqueNormale(r) },
        { condition: RdDCombat.isEchecTotal, action: r => this._onAttaqueEchecTotal(r) },
        { condition: RdDCombat.isEchec, action: r => this._onAttaqueEchec(r) }
      ]
    } );
    dialog.render(true);
  }

  /* -------------------------------------------- */
  _prepareAttaque(competence, arme) {
    let rollData = {
      coupsNonMortels: false,
      competence: competence,
      surprise: this.attacker.getSurprise(),
      surpriseDefenseur: this.defender.getSurprise()
    };

    if (this.attacker.isCreature()) {
      this._modifieRollDataCreature(rollData, competence);
    }
    else if (arme) {
      // Usual competence
      rollData.arme = RdDItemArme.armeUneOuDeuxMains(arme, RdDItemCompetence.isArmeUneMain(competence));
    }
    else {
      // sans armes: à mains nues
      rollData.arme = RdDItemArme.mainsNues();
    }
    return rollData;
  }

  _modifieRollDataCreature(rollData, competence) {
    competence = duplicate(competence);
    competence.data.defaut_carac = "carac_creature";
    competence.data.categorie = "creature";

    rollData.competence = competence;
    rollData.carac = { "carac_creature": { label: competence.name, value: competence.data.carac_value } };
    rollData.arme = {
      name: competence.name, data: {
        dommages: competence.data.dommages,
        dommagesReels: competence.data.dommages
      }
    };

    // rollData.dmg = {
    //   dmgArme: competence.data.dommages,
    //   total: competence.data.dommages
    // };
  }

  /* -------------------------------------------- */
  _onAttaqueParticuliere(rollData) {
    console.log("RdDCombat.onAttaqueParticuliere >>>", rollData);
    let message = "<strong>Réussite particulière en attaque</strong>";
    message += "<br><a class='chat-card-button' id='particuliere-attaque' data-mode='force' data-attackerId='" + this.attackerId + "'>Attaquer en Force</a>";
    // Finesse et Rapidité seulement en mêlée et si la difficulté libre est de -1 minimum
    if (rollData.selectedCarac.label == "Mêlée" && rollData.diffLibre < 0) {
      message += "<br><a class='chat-card-button' id='particuliere-attaque' data-mode='rapidite' data-attackerId='" + this.attackerId + "'>Attaquer en Rapidité</a>";
      message += "<br><a class='chat-card-button' id='particuliere-attaque' data-mode='finesse' data-attackerId='" + this.attackerId + "'>Attaquer en Finesse</a>";
    }
    game.system.rdd.rollDataHandler[this.attackerId] = rollData;
    // TODO: use a dialog?
    ChatMessage.create({ content: message, whisper: ChatMessage.getWhisperRecipients(this.attacker.name) });
  }

  /* -------------------------------------------- */
  async _onAttaqueNormale(rollData) {
    console.log("RdDCombat.onAttaqueNormale >>>", rollData);
    if (!await this.accorderEntite('avant-defense')) {
      return;
    }

    let explications = "";

    // Message spécial pour la rapidité, qui reste difficile à gérer automatiquement
    if (rollData.particuliereAttaque == 'rapidite') {
      ChatMessage.create({
        content: "Vous avez attaqué en Rapidité. Vous pourrez faire une deuxième attaque, ou utiliser votre arme pour vous défendre.",
        whisper: ChatMessage.getWhisperRecipients(this.attacker.name)
      });
    }
    rollData.dmg = RdDBonus.dmg(rollData, this.attacker.getBonusDegat(), this.defender.isEntiteCauchemar());

    if (this.target) {
      explications += "<br><strong>Cible</strong> : " + this.defender.data.name;
    }
    explications += "<br>Encaissement à " + Misc.toSignedString(rollData.dmg.total) + " (" + rollData.dmg.loc.label + ")";

    // Save rollData for defender
    game.system.rdd.rollDataHandler[this.attackerId] = duplicate(rollData);

    // Final chat message
    let chatOptions = {
      content: "<strong>Test : " + rollData.selectedCarac.label + " / " + rollData.competence.name + "</strong>"
        + "<br>Difficultés <strong>libre : " + rollData.diffLibre + "</strong> / conditions : " + Misc.toSignedString(rollData.diffConditions) + " / état : " + rollData.etat
        + RdDResolutionTable.explain(rollData.rolled)
        + explications
    }
    ChatUtility.chatWithRollMode(chatOptions, this.attacker.name)
    if (this.target) {
      this._messageDefenseur(rollData);
    }
  }

  /* -------------------------------------------- */
  _messageDefenseur(rollData) {
    console.log("RdDCombat._messageDefenseur", rollData, " / ", this.attacker, this.target, this.target.actor.isToken, this.attacker.data._id, rollData.competence.data.categorie);

    let content = "<strong>" + this.defender.name + "</strong> doit se défendre :<span class='chat-card-button-area'>";

    if (this.defender.getSurprise() != 'totale') {
      // parades
      for (const arme of this._filterArmesParade(this.defender.data.items, rollData.competence.data.categorie)) {
        content += "<br><a class='chat-card-button' id='parer-button' data-attackerId='" + this.attackerId + "' data-defenderTokenId='" + this.defenderTokenId + "' data-armeid='" + arme._id + "'>Parer avec " + arme.name + "</a>";
      }
      
      // esquive
      if (rollData.competence.data.categorie == 'melee' || rollData.competence.data.categorie == "lancer" || rollData.competence.data.categorie == 'competencecreature') {
        content += "<br><a class='chat-card-button' id='esquiver-button' data-attackerId='" + this.attackerId + "' data-defenderTokenId='" + this.defenderTokenId + "'>Esquiver</a>";
      }
    }

    // encaisser
    content += "<br><a class='chat-card-button' id='encaisser-button' data-attackerId='" + this.attackerId + "' data-defenderTokenId='" + this.defenderTokenId + "'>Encaisser à " + Misc.toSignedString(rollData.dmg.total) + " !</a>";
    content += "</span>"

    let defense = {
      title: "Défense en combat",
      content: content,
      whisper: ChatMessage.getWhisperRecipients(this.defender.name),
      attackerId: this.attackerId,
      defenderTokenId: this.defenderTokenId,
      rollMode: true,
      rollData: duplicate(rollData)
    };

    // envoyer le message de defense
    if (!game.user.isGM || this.defender.hasPlayerOwner) {
      game.socket.emit("system.foundryvtt-reve-de-dragon", { msg: "msg_defense", data: defense });
    } else {
      defense.whisper = [game.user];
    }

    if (game.user.isGM) { // Always push the message to the MJ
      ChatMessage.create(defense);
    }
  }

  /* -------------------------------------------- */
  _filterArmesParade(items, categorie) {
    switch (categorie) {
      case 'tir':
      case 'lancer':
        return items.filter(item => item.data.competence.toLowerCase().match("bouclier"));
      default:
        return items.filter(item => {
          if (item.type == 'competencecreature') {
            return item.data.isparade;
          }
          if (item.type == 'arme') {
            const comp = this.defender.getCompetence(item.data.competence);
            return comp && comp.data.categorie == 'melee';
          }
          return false;
        });
    }
  }

  /* -------------------------------------------- */
  _onAttaqueEchecTotal(rollData) {
    console.log("RdDCombat.onEchecTotal >>>", rollData);
    // TODO: proposer un résultat d'échec total
    let chatOptions = {
      content: "<strong>Echec total à l'attaque!</strong>"
    }
    ChatUtility.chatWithRollMode(chatOptions, this.attacker.name)
  }

  /* -------------------------------------------- */
  _onAttaqueEchec(rollData) {
    console.log("RdDCombat.onAttaqueEchec >>>", rollData);
    let chatOptions = {
      content: "<strong>Test : " + rollData.selectedCarac.label + " / " + rollData.competence.name + "</strong>"
        + "<br>Difficultés <strong>libre : " + rollData.diffLibre + "</strong> / conditions : " + Misc.toSignedString(rollData.diffConditions) + " / état : " + rollData.etat
        + RdDResolutionTable.explain(rollData.rolled)
        + (this.target ? "<br><strong>Cible</strong> : " + this.defender.data.name : "")
    }
    ChatUtility.chatWithRollMode(chatOptions, this.attacker.name)
  }

  /* -------------------------------------------- */
  async choixParticuliere(rollData, choix) {
    console.log("RdDCombat.choixParticuliere >>>", rollData, choix);
    rollData.particuliereAttaque = choix;
    await this._onAttaqueNormale(rollData);
  }

  /* -------------------------------------------- */
  async parade(attackerRoll, armeParadeId) {
    let arme = this.defender.getOwnedItem(armeParadeId);

    console.log("RdDCombat.parade >>>", attackerRoll, armeParadeId, arme);

    let rollData = this._prepareParade(attackerRoll, arme);

    const dialog = await RdDRoll.create(this.defender, rollData,
      { html: 'systems/foundryvtt-reve-de-dragon/templates/dialog-competence.html',
        options: { height: 540 } }, {
      name: 'jet-parade',
      label: 'Parade: ' + (arme ? arme.name : rollData.competence.name),
      callbacks: [
        this.defender.createCallbackExperience(),
        { condition: RdDCombat.isParticuliere, action: r => this._onParadeParticuliere(r) },
        { condition: RdDCombat.isReussite, action: r => this._onParadeNormale(r) },
        { condition: RdDCombat.isEchecTotal, action: r => this._onParadeEchecTotal(r) },
        { condition: RdDCombat.isEchec, action: r => this._onParadeEchec(r) }
      ]
    } );
    dialog.render(true);
  }

  _prepareParade(attackerRoll, arme) {
    const isCreature = this.defender.isCreature();
    const compName = isCreature ? arme.name : arme.data.data.competence;
    const competence = this.defender.getCompetence(compName);
    const armeAttaque = attackerRoll.arme;
    const armeParade = arme.data;

    if (compName != competence.name) {
      // TODO: toujours utiliser competence.name ...
      ui.notifications.warn("Différence entre compétence " + competence.name + " et compétence de l'arme " + compName);
    }

    let rollData = {
      forceValue: this.defender.getForceValue(),
      diffLibre: attackerRoll.diffLibre,
      attackerRoll: attackerRoll,
      competence: competence,
      arme: arme.data,
      surprise: this.defender.getSurprise(),
      surpriseDefenseur: this.defender.getSurprise(),
      needSignificative: this._needSignificative(attackerRoll) || RdDItemArme.needParadeSignificative(armeAttaque, armeParade),
      needResist: this._needResist(armeAttaque, armeParade),
      carac: this.defender.data.data.carac
    };
    if (isCreature) {
      this._modifieRollDataCreature(rollData, competence);
    }
    return rollData;
  }

  /* -------------------------------------------- */
  _needSignificative(attackerRoll) {
    return attackerRoll.particuliereAttaque == 'finesse';
  }

  /* -------------------------------------------- */
  _needResist(armeAttaque, armeParade) {
    // Manage weapon categories when parrying (cf. page 115 )
    let attCategory = RdDItemArme.getCategorieArme(armeAttaque);
    let defCategory = RdDItemArme.getCategorieArme(armeParade);

    return (attCategory.match("epee") && (defCategory == "hache" || defCategory == "lance"));
  }

  /* -------------------------------------------- */
  _onParadeParticuliere(rollData) {
    console.log("RdDCombat._onParadeParticuliere >>>", rollData);
    if (!rollData.attackerRoll.isPart) {
      // TODO: attaquant doit jouer résistance et peut être désarmé p132
    }
    let chatOptions = {
      content: "<strong>Vous pouvez utiliser votre arme pour une deuxième parade!</strong>"
    }
    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)
  }

  /* -------------------------------------------- */
  async _onParadeNormale(rollData) {
    console.log("RdDCombat._onParadeNormale >>>", rollData);
    await this.defender.computeDeteriorationArme(rollData);
    await this.defender.computeRecul(rollData, false);

    let chatOptions = {
      content: "<strong>Test : " + rollData.selectedCarac.label + " / " + rollData.competence.name + "</strong>"
        + "<br>Difficultés <strong>libre : " + rollData.diffLibre + "</strong> / conditions : " + Misc.toSignedString(rollData.diffConditions) + " / état : " + rollData.etat
        + RdDResolutionTable.explain(rollData.rolled)
        + "<br><strong>Attaque parée!</strong>"
    }

    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)
  }

  /* -------------------------------------------- */
  _onParadeEchecTotal(rollData) {
    console.log("RdDCombat._onParadeEchecTotal >>>", rollData);
    // TODO: proposer un résultat d'échec total
    let chatOptions = {
      content: "<strong>Echec total à la parade!</strong>"
    }
    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)
  }

  /* -------------------------------------------- */
  async _onParadeEchec(rollData) {
    console.log("RdDCombat._onParadeEchec >>>", rollData);

    let explications = "<br><strong>Parade échouée, encaissement !</strong> ";
    explications += RdDBonus.description(rollData.surprise);
    if (rollData.needSignificative) {
      explications += " Significative nécessaire!";
    }

    let chatOptions = {
      content: "<strong>Test : " + rollData.selectedCarac.label + " / " + rollData.competence.name + "</strong>"
        + "<br>Difficultés <strong>libre : " + rollData.diffLibre + "</strong> / conditions : " + Misc.toSignedString(rollData.diffConditions) + " / état : " + rollData.etat
        + RdDResolutionTable.explain(rollData.rolled)
        + explications
    }

    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)

    await this.defender.computeRecul(rollData, true);
    // TODO: gestion message pour chance/encaissement
    this.encaisser(rollData.attackerRoll);
  }

  /* -------------------------------------------- */
  async esquive(attackerRoll) {
    let esquive = this.defender.getCompetence("esquive");
    if (esquive == undefined) {
      ui.notifications.error(this.defender.name + " n'a pas de compétence 'esquive'");
      return;
    }
    console.log("RdDCombat.esquive >>>", attackerRoll, esquive);
    let rollData = this._prepareEsquive(attackerRoll, esquive);

    const dialog = await RdDRoll.create(this.defender, rollData,
      { html: 'systems/foundryvtt-reve-de-dragon/templates/dialog-competence.html' }, {
      name: 'jet-esquive',
      label: 'Esquiver',
      callbacks: [
        this.defender.createCallbackExperience(),
        { condition: RdDCombat.isParticuliere, action: r => this._onEsquiveParticuliere(r) },
        { condition: RdDCombat.isReussite, action: r => this._onEsquiveNormale(r) },
        { condition: RdDCombat.isEchecTotal, action: r => this._onEsquiveEchecTotal(r) },
        { condition: RdDCombat.isEchec, action: r => this._onEsquiveEchec(r) },
      ]
    });
    dialog.render(true);
  }

  _prepareEsquive(attackerRoll, competence) {
    let rollData = {
      forceValue: this.defender.getForceValue(),
      diffLibre: attackerRoll.diffLibre,
      attackerRoll: attackerRoll,
      competence: competence,
      surprise: this.defender.getSurprise(),
      surpriseDefenseur: this.defender.getSurprise(),
      needSignificative: this._needSignificative(attackerRoll),
      carac: this.defender.data.data.carac
    };

    if (this.defender.isCreature()) {
      this._modifieRollDataCreature(rollData, competence);
    }
    return rollData;
  }

  /* -------------------------------------------- */
  _onEsquiveParticuliere(rollData) {
    console.log("RdDCombat._onEsquiveParticuliere >>>", rollData);
    let chatOptions = {
      content: "<strong>Vous pouvez esquiver une deuxième attaque!</strong>"
    }
    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)
  }

  /* -------------------------------------------- */
  _onEsquiveNormale(rollData) {
    console.log("RdDCombat._onEsquiveNormal >>>", rollData);
    let chatOptions = {
      content: "<strong>Test : " + rollData.selectedCarac.label + " / " + rollData.competence.name + "</strong>"
        + "<br>Difficultés <strong>libre : " + rollData.diffLibre + "</strong> / conditions : " + Misc.toSignedString(rollData.diffConditions) + " / état : " + rollData.etat
        + RdDResolutionTable.explain(rollData.rolled)
        + "<br><strong>Attaque esquivée!</strong>"
    }

    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)
  }
  /* -------------------------------------------- */
  _onEsquiveEchecTotal(rollData) {
    console.log("RdDCombat._onEsquiveEchecTotal >>>", rollData);
    // TODO: proposer un résultat d'échec total
    let chatOptions = {
      content: "<strong>Echec total à l'esquive'!</strong>"
    }
    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)
  }
  /* -------------------------------------------- */
  async _onEsquiveEchec(rollData) {
    console.log("RdDCombat._onEsquiveEchec >>>", rollData);

    let explications = "<br><strong>Esquive échouée, encaissement !</strong> ";
    explications += RdDBonus.description(rollData.surprise);
    if (rollData.needSignificative) {
      explications += " Significative nécessaire!";
    }

    let chatOptions = {
      content: "<strong>Test : " + rollData.selectedCarac.label + " / " + rollData.competence.name + "</strong>"
        + "<br>Difficultés <strong>libre : " + rollData.diffLibre + "</strong> / conditions : " + Misc.toSignedString(rollData.diffConditions) + " / état : " + rollData.etat
        + RdDResolutionTable.explain(rollData.rolled)
        + explications
    }

    ChatUtility.chatWithRollMode(chatOptions, this.defender.name)

    await this.defender.computeRecul(rollData, true);
    this.encaisser(rollData.attackerRoll);
  }

  /* -------------------------------------------- */
  encaisser(attackerRoll) {
    // TODO: gestion message pour chance/encaissement
    this.encaisser(attackerRoll, this.defenderTokenId);
  }

  /* -------------------------------------------- */
  encaisser(attackerRoll, defenderTokenId) {
    defenderTokenId = defenderTokenId || this.defenderTokenId;
    console.log("RdDCombat.encaisser >>>", attackerRoll, defenderTokenId);

    if (game.user.isGM) { // Current user is the GM -> direct access
      attackerRoll.attackerId = this.attackerId;
      attackerRoll.defenderTokenId = defenderTokenId;
      this.defender.encaisserDommages(attackerRoll, this.attacker);
    } else { // Emit message for GM
      game.socket.emit("system.foundryvtt-reve-de-dragon", {
        msg: "msg_encaisser",
        data: { attackerId: this.attackerId, defenderTokenId: defenderTokenId }
      });
    }
  }

  /* -------------------------------------------- */
  /* retourne true si on peut continuer, false si on ne peut pas continuer */
  async accorderEntite(when = 'avant-encaissement') {
    if (when != game.settings.get("foundryvtt-reve-de-dragon", "accorder-entite-cauchemar")
      || this.defender == undefined
      || !this.defender.isEntiteCauchemar()
      || this.defender.isEntiteCauchemarAccordee(this.attacker)) {
      return true;
    }

    let rolled = await RdDResolutionTable.roll(this.attacker.getReveActuel(), - Number(this.defender.data.data.carac.niveau.value));

    let message = {
      content: "Jet de points actuels de rêve à " + rolled.finalLevel + RdDResolutionTable.explain(rolled) + "<br>",
      whisper: ChatMessage.getWhisperRecipients(this.attacker.name)
    };

    if (rolled.isSuccess) {
      await this.defender.setEntiteReveAccordee(this.attacker);
      message.content += this.attacker.name + " s'est accordé avec " + this.defender.name;
    }
    else {
      message.content += this.attacker.name + " n'est pas accordé avec " + this.defender.name;
    }

    ChatMessage.create(message);
    return rolled.isSuccess;
  }

}