// LifeTown Online — JSON-file persistence for player profiles.
import fs from 'node:fs';
import path from 'node:path';
import crypto from 'node:crypto';
import { fileURLToPath } from 'node:url';
import { START_MONEY, HOUSES } from '../shared/data.mjs';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const SAVE_DIR = path.join(__dirname, '..', 'saves');
fs.mkdirSync(SAVE_DIR, { recursive: true });

function sanitizeName(name) {
  return String(name || '').trim().replace(/[^A-Za-z0-9_\- ]/g, '').slice(0, 20);
}

export function newProfile(name, appearance) {
  const safe = sanitizeName(name);
  return {
    name: safe,
    token: crypto.randomBytes(16).toString('hex'),
    createdAt: Date.now(),
    appearance,                 // character creator output (client-defined schema)
    money: START_MONEY,
    level: 1, xp: 0,            // player level
    job: null,                  // { id, rank, xp }
    workLastAt: 0,
    houseTier: 'studio',        // owned house tier id
    housesOwned: ['studio'],
    homeLayout: [],             // [{itemId,x,z,rot}]
    inventory: [],              // [{itemId}] purchased, not yet placed
    relationships: {},          // npcId|playerName -> {f,r,status}
    achievements: [],
    stats: { shifts: 0, dances: 0, giftsSent: 0 },
    needs: null,                // client-simulated; stored for continuity
    moodlets: [],
  };
}

export function loadProfile(name) {
  const safe = sanitizeName(name);
  const file = path.join(SAVE_DIR, `${safe.toLowerCase()}.json`);
  try {
    if (!fs.existsSync(file)) return null;
    const raw = JSON.parse(fs.readFileSync(file, 'utf8'));
    if (!raw || raw.name !== safe) return null;
    // migrate defaults
    const base = newProfile(safe, raw.appearance || defaultAppearance());
    const merged = { ...base, ...raw, name: safe };
    if (!Array.isArray(merged.homeLayout)) merged.homeLayout = [];
    if (!Array.isArray(merged.inventory)) merged.inventory = [];
    if (!Array.isArray(merged.achievements)) merged.achievements = [];
    if (typeof merged.relationships !== 'object' || !merged.relationships) merged.relationships = {};
    if (typeof merged.stats !== 'object' || !merged.stats) merged.stats = { shifts: 0, dances: 0, giftsSent: 0 };
    return merged;
  } catch {
    return null;
  }
}

export function saveProfile(profile) {
  const file = path.join(SAVE_DIR, `${profile.name.toLowerCase()}.json`);
  const tmp = file + '.tmp';
  fs.writeFileSync(tmp, JSON.stringify(profile));
  fs.renameSync(tmp, file);
}

export function defaultAppearance() {
  return {
    bodyType: 'average', height: 1, skin: '#eab98f', faceShape: 'round',
    hair: 'short', hairColor: '#4a2f1d', eyes: 'round', eyeColor: '#3a5a40',
    brows: 'natural', nose: 'button', mouth: 'smile',
    outfit: { top: 'tee', bottom: 'jeans', dress: null, shoes: 'sneakers', accessory: 'none', topColor: '#4f8fd9', bottomColor: '#33415c' },
    personality: ['Friendly'], voice: 'warm', age: 25,
  };
}

export function findProfileByToken(token) {
  if (!token || typeof token !== 'string') return null;
  for (const f of fs.readdirSync(SAVE_DIR)) {
    if (!f.endsWith('.json')) continue;
    try {
      const p = JSON.parse(fs.readFileSync(path.join(SAVE_DIR, f), 'utf8'));
      if (p.token === token) return p;
    } catch { /* skip corrupt */ }
  }
  return null;
}

export function listProfileNames() {
  try {
    return fs.readdirSync(SAVE_DIR).filter(f => f.endsWith('.json')).map(f => {
      try { return JSON.parse(fs.readFileSync(path.join(SAVE_DIR, f), 'utf8')).name; } catch { return null; }
    }).filter(Boolean);
  } catch { return []; }
}

export { sanitizeName };