import { RdDUtility } from "./rdd-utility.js";

const competenceTroncs = [["Esquive", "Dague", "Corps à corps"],
["Epée à 1 main", "Epée à 2 mains", "Hache à 1 main", "Hache à 2 mains", "Lance", "Masse à 1 main", "Masse à 2 mains"]];

const competence_xp_par_niveau = [5, 5, 5, 10, 10, 10, 10, 15, 15, 15, 15, 20, 20, 20, 20, 30, 30, 40, 40, 60, 60, 100, 100, 100, 100, 100, 100, 100, 100, 100];
const competence_niveau_max = competence_xp_par_niveau.length - 10;

function _buildCumulXP() {
  let cumulXP = { "-11": 0 };
  let cumul = 0;
  for (let i = 0; i <= competence_xp_par_niveau.length; i++) {
    let level = i - 10;
    cumul += competence_xp_par_niveau[i];
    cumulXP[level] = cumul;
  }
  return cumulXP;
}

const compendiumCompetences = {
  "personnage": "foundryvtt-reve-de-dragon.competences",
  "creature": "foundryvtt-reve-de-dragon.competences-creatures",
  "entite": "foundryvtt-reve-de-dragon.competences-entites"
};

const competence_xp_cumul = _buildCumulXP();

export class RdDItemCompetence extends Item {

  static compendium(actorType){
    return compendiumCompetences[actorType] ?? '';
  }
  /* -------------------------------------------- */
  static isCompetenceArme(competence) {
    switch (competence.data.categorie) {
      case 'melee':
        return competence.name.toLowerCase() != 'esquive';
      case 'tir':
      case 'lancer':
        return true;
    }
    return false;
  }

  /* -------------------------------------------- */
  static isArmeUneMain(competence) {
    return competence?.name.toLowerCase().includes("1 main");
  }
  static isArme2Main(competence) {
    return competence?.name.toLowerCase().includes("2 main");
  }

  /* -------------------------------------------- */
  static isMalusEncombrementTotal(competence) {
    return competence?.name.toLowerCase().match(/(natation|acrobatie)/);
  }

  /* -------------------------------------------- */
  static isTronc(compName) {
    for (let troncList of competenceTroncs) {
      for (let troncName of troncList) {
        if (troncName == compName)
          return troncList;
      }
    }
    return false;
  }

  /* -------------------------------------------- */
  static computeTotalXP(competences) {
    const total = competences.map(c => RdDItemCompetence.computeXP(c))
      .reduce((a, b) => a + b, 0);
    const economieTronc = RdDItemCompetence.computeEconomieXPTronc(competences);
    return total - economieTronc;
  }

  /* -------------------------------------------- */
  static computeXP(competence) {
    // Thanatos compte double !
    const factor = competence.name.includes('Thanatos') ? 2 : 1
    const xpNiveau = RdDItemCompetence.computeDeltaXP(competence.data.base, competence.data.niveau ?? competence.data.base);
    const xp = competence.data.xp ?? 0;
    const xpSort = competence.data.xp_sort ?? 0;
    return factor * (xpNiveau + xp) + xpSort;
  }

  /* -------------------------------------------- */
  static computeEconomieXPTronc(competences) {
    return competenceTroncs.map(
      list => list.map(name => RdDItemCompetence.findCompetence(competences, name))
        // calcul du coût xp jusqu'au niveau 0 maximum
        .map(it => RdDItemCompetence.computeDeltaXP(it.data.base, Math.min(it.data.niveau, 0)))
        .sort((a, b) => b - a) // tri descendant
        .splice(0, 1) // ignorer le coût xp le plus élevé
        .reduce((a, b) => a + b, 0)
    ).reduce((a, b) => a + b, 0);
  }

  static setLevelUp(competences) {
    competences.forEach(it => {
      it.data.xpNext = RdDItemCompetence.getCompetenceNextXp(it.data.niveau);
      it.data.isLevelUp = it.data.xp >= it.data.xpNext;
    });
  }

  static computeResumeArchetype(competences) {
    const archetype = RdDUtility.getLimitesArchetypes();
    competences.forEach(item => {
      let niveau = (item.data.niveau_archetype < 0) ? 0 : item.data.niveau_archetype;
      archetype[niveau] = archetype[niveau] ?? { "niveau": niveau, "nombreMax": 0, "nombre": 0 };
      archetype[niveau].nombre = (archetype[niveau]?.nombre ?? 0) + 1;
    });
    return archetype;
  }

  static isVisible(competence) {
    return Number(competence.data.niveau) != RdDUtility.getCategorieNiveauBase(competence.data.categorie);
  }

  static isNiveauBase(competence) {
    return Number(competence.data.niveau) == RdDUtility.getCategorieNiveauBase(competence.data.categorie);
  }

  /* -------------------------------------------- */
  static findCompetence(list, name) {
    name = name.toLowerCase();
    return list.find(it => it.name.toLowerCase() == name && (it.type == "competence" || it.type == "competencecreature"))
  }

  static getEsquive(competences) {
    return { name: "Esquive", niveau: RdDItemCompetence.findCompetence(competences, 'Esquive')?.data.niveau ?? -6 };
  }

  /* -------------------------------------------- */
  static getCompetenceNextXp(niveau) {
    return RdDItemCompetence.getCompetenceXp(niveau + 1);
  }

  /* -------------------------------------------- */
  static getCompetenceXp(niveau) {
    RdDItemCompetence._valideNiveau(niveau);
    return niveau < -10 ? 0 : competence_xp_par_niveau[niveau + 10];
  }

  /* -------------------------------------------- */
  static computeDeltaXP(from, to) {
    RdDItemCompetence._valideNiveau(from);
    RdDItemCompetence._valideNiveau(to);
    return competence_xp_cumul[to] - competence_xp_cumul[from];
  }

  /* -------------------------------------------- */
  static _valideNiveau(niveau) {
    if (niveau < -11 || niveau > competence_niveau_max) {
      console.warn("Niveau en dehors des niveaux de compétences: [-11, " + competence_niveau_max + "]", niveau)
    }
  }

}