/**
 * Galaxy Strike Online — NPC Reputation System (GDD §15.3)
 * Scale: -2000 to +2000 per faction
 * Factions: Federation, Pirate Syndicate, Merchant Guild, Rogue AI, Void Cult
 */

const FACTIONS = {
  federation:      { name: 'Federation',       icon: '🌐', color: '#42a5f5', desc: 'The governing body of settled space.' },
  pirate_syndicate:{ name: 'Pirate Syndicate',  icon: '💀', color: '#ef5350', desc: 'Organised raiders — hostile by default.' },
  merchant_guild:  { name: 'Merchant Guild',    icon: '💼', color: '#ffd700', desc: 'Trade consortium controlling major routes.' },
  rogue_ai:        { name: 'Rogue AI Collective',icon: '🤖', color: '#ab47bc', desc: 'Autonomous machines of unknown origin.' },
  void_cult:       { name: 'Void Cult',          icon: '🌑', color: '#78909c', desc: 'Enigmatic zealots from deep space.' },
};

const THRESHOLDS = [
  { min: 1500, label: 'Exalted',   color: '#ffd700' },
  { min: 1000, label: 'Honored',   color: '#4caf50' },
  { min: 500,  label: 'Friendly',  color: '#66bb6a' },
  { min: 1,    label: 'Neutral',   color: '#aaa'    },
  { min: -499, label: 'Unfriendly',color: '#ff9800' },
  { min: -999, label: 'Hostile',   color: '#f44336' },
  { min: -2000,label: 'Hated',     color: '#b71c1c' },
];

function getStanding(rep) {
  for (const t of THRESHOLDS) if (rep >= t.min) return t;
  return THRESHOLDS[THRESHOLDS.length - 1];
}

class ReputationSystem {
  initReputation(playerData) {
    if (playerData.reputation) return;
    const rep = {};
    for (const id of Object.keys(FACTIONS)) {
      rep[id] = id === 'pirate_syndicate' ? -500 : 0; // Pirates start hostile
    }
    playerData.reputation = rep;
  }

  adjustReputation(playerData, factionId, delta) {
    this.initReputation(playerData);
    if (!FACTIONS[factionId]) return;
    const current = playerData.reputation[factionId] || 0;
    playerData.reputation[factionId] = Math.max(-2000, Math.min(2000, current + delta));
    // Opposing factions lose rep when gaining with others
    const opposites = { federation: 'pirate_syndicate', pirate_syndicate: 'federation' };
    const opp = opposites[factionId];
    if (opp && delta > 0) {
      playerData.reputation[opp] = Math.max(-2000, (playerData.reputation[opp]||0) - Math.floor(delta * 0.5));
    }
    return playerData.reputation[factionId];
  }

  getReputationData(playerData) {
    this.initReputation(playerData);
    return Object.entries(FACTIONS).map(([id, f]) => {
      const rep = playerData.reputation[id] || 0;
      const standing = getStanding(rep);
      return { id, ...f, reputation: rep, standing: standing.label, standingColor: standing.color };
    });
  }

  getFactions() { return FACTIONS; }
}

module.exports = { ReputationSystem, FACTIONS };