import { Grammar } from "./grammar.js";
import { Misc } from "./misc.js";
import { RdDDice } from "./rdd-dice.js";
import { SystemCompendiums } from "./settings/system-compendiums.js";
import { TMRUtility } from "./tmr-utility.js";


/* -------------------------------------------- */
export class TMRRencontres {

  /* -------------------------------------------- */
  /**
   * Retourne une recontre en fonction de la case et du tirage
   * @param {*} terrain 
   * @param {*} forcedRoll 
   */
  static async rollRencontre(terrain, forcedRoll) {
    terrain = TMRUtility.findTMRLike(terrain);
    if (terrain == undefined) {
      return undefined;
    }
    
    if (forcedRoll && (forcedRoll <= 0 || forcedRoll > 100)) {
      forcedRoll = undefined;
    }
    const codeTerrain = Grammar.toLowerCaseNoAccent(terrain)
    const table = await TMRRencontres.$buildTableRencontre(codeTerrain);
    const [selected, roll] = await TMRRencontres.$selectRencontre(codeTerrain, table, forcedRoll);
    const rencontre = await TMRRencontres.createRencontre(selected.rencontre);
    TMRRencontres.$chatRolledRencontre(rencontre, terrain, table, roll, true);
    return false;
  }
  
  /* -------------------------------------------- */
  static async $buildTableRencontre(codeTerrain) {
    let max = 0;
    const items = await SystemCompendiums.getItems('rencontres', 'rencontre');
    const filtreMauvaise = codeTerrain == 'mauvaise' ? it => it.system.mauvaiseRencontre : it => !it.system.mauvaiseRencontre;
    const rencontres = items.filter(it => it.type == 'rencontre')
      .filter(filtreMauvaise)
      .filter(it => it.system.frequence[codeTerrain] > 0)
      .sort(Misc.ascending(it => it.system.ordreTri))
      .map(it => {
        const frequence = it.system.frequence[codeTerrain];
        max += frequence;
        return { rencontre: it, min: max - frequence + 1, max: max,frequence: frequence };
      });
    return rencontres;
  }
  
  /* -------------------------------------------- */
  static async $selectRencontre(terrain, table, roll = undefined) {
    const total = table.map(it => it.frequence).reduce(Misc.sum(), 0);
    if (total == 0){
      ui.notifications.warn(`Pas de rencontres définies pour ${terrain}`);
      return undefined;
    }
    if (roll != undefined && (roll > total || roll <= 0)) {
      ui.notifications.warn(`Jet de rencontre ${roll} en dehors de la table [1..${total}], le jet est relancé`);
      roll = undefined;
    }
    if (!roll) {
      roll = await RdDDice.rollTotal(`1d${total}`);
    }
    return [table.find(it => it.min <= roll && roll <= it.max), roll];
  }
  
  /* -------------------------------------------- */
  static async createRencontre(rencontre, tmr = undefined) {
    return rencontre.clone({
      'system.force': await RdDDice.rollTotal(rencontre.system.formule),
      'system.coord': tmr?.coord,
      'system.date': game.system.rdd.calendrier.getDateFromIndex(),
      'system.heure': game.system.rdd.calendrier.getCurrentHeure()
    }, {save: false});
  }

  static async calculRencontre(rencontre, tmr = undefined) {
    if (rencontre.system.coord == ""){
      rencontre.system.coord = tmr?.coord;
    }
    if (rencontre.system.force == 0){
      rencontre.system.force = await RdDDice.rollTotal(rencontre.system.formule);
    }
    if (rencontre.system.date == "" ) {
      rencontre.system.date = game.system.rdd.calendrier.getDateFromIndex();
    }
    if (rencontre.system.heure == "") {
      rencontre.system.heure = game.system.rdd.calendrier.getCurrentHeure();
    }
    return rencontre;
  }

  /* -------------------------------------------- */
  static $chatRolledRencontre(rencontre, terrain, table, roll = 0, displayTable=false){
    const total = table.map(it => it.frequence).reduce(Misc.sum(), 0);
    const namesPercent = displayTable ?
      table.map(it => `<br>${it.rencontre.name} : ${it.frequence}${total == 100 ? '%' : ''} (${it.min} - ${it.max})`).reduce((a, b) => a + b, '<hr>')
      : '';
    const chances = game.user.isGM
      ? (roll ? `Jet: ${roll} / ${total}` : `Valeurs: [1..${total}]`)
      : (roll ? `Jet: ${Math.ceil(roll*100/total)} / 100` : '');
    ChatMessage.create({
      user: game.user.id,
      whisper: [game.user.id],
      content: `Compendium: ${SystemCompendiums.getCompendium('rencontres')}
      <br>Rencontre en ${terrain}:
      ${namesPercent}<hr>
      <br>${chances}
      <br>Rencontre: ${rencontre.name} ${rencontre.system.force} (${rencontre.system.formule})`
    });
  }

  static async getPresentsCite() {
    const rencontres = await SystemCompendiums.getDefaultItems('rencontres');
    return rencontres.filter(it => !it.system.mauvaiseRencontre && it.system.presentCite).map(it => 
      it.clone({ 'system.formule': "2d6" }, {save: false}));
  }

  static async getReveDeDragon(force) {
    const rencontres = await SystemCompendiums.getDefaultItems('rencontres');
    const reveDeDragon = rencontres.find(it => Grammar.equalsInsensitive(it.name, 'Rêve de Dragon'));
    return reveDeDragon?.clone({ 'system.force': force }, {save: false});
  }

  /* -------------------------------------------- */
  static async getRencontreAleatoire(tmr, mauvaise) {
    const codeTerrain = mauvaise ? 'mauvaise' : tmr.type;
    const table = await TMRRencontres.$buildTableRencontre(codeTerrain);
    const [selected, roll] = await TMRRencontres.$selectRencontre(codeTerrain, table);
    const rencontre = await TMRRencontres.createRencontre(selected.rencontre, tmr);
    TMRRencontres.$chatRolledRencontre(rencontre, TMRUtility.getTMRType(tmr.coord), table, roll);
    return rencontre;
  }

}