// Generated, do not edit. sha256:1c9c0ff79637180d3780a7e1dd1e59dbb03533899d9a66468c9cdf709d9ee0fe
import { t, localeTag } from '../i18n/index.js';
import { listAssets } from '../data/assets.js';
import { liveSpotFor, basePriceOf } from '../price/providers.js';
import { fmtMoney, fmtInt, currencySymbol, currencyName, parseLocaleNumber } from '../ui/format.js';
import { baseCurrency } from '../app-settings.js';

const TO_BTC = { btc: 1, mbtc: 1e-3, bit: 1e-6, sat: 1e-8, msat: 1e-11 };
const UNITS = ['fiat', 'btc', 'mbtc', 'bit', 'sat', 'msat'];

export const title = () => t('conversion.title');

const parseNumber = str => parseLocaleNumber(str) || 0;

function formatUnit(unit, value) {
  if (value === 0) return '';
  const nl = localeTag();
  switch (unit) {
    case 'fiat': return value.toLocaleString(nl, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
    case 'btc':  return value.toLocaleString(nl, { maximumFractionDigits: 8 });
    case 'mbtc': return value.toLocaleString(nl, { maximumFractionDigits: 5 });
    case 'bit':  return value.toLocaleString(nl, { maximumFractionDigits: 2 });
    case 'sat':
    case 'msat': return Math.round(value).toLocaleString(nl);
  }
}

export async function render(el) {
  const n = fmtInt;
  el.innerHTML = `

    <div class="card price-hero">
      <div>
        <div class="t-label price-label">${t('conversion.btcRate')}</div>
        <div class="t-value price-val" id="price-display">€ -</div>
        <div class="price-meta" id="price-meta">${t('conversion.loading')}</div>
      </div>
    </div>

    <div class="conv-grid">
      ${field('fiat', t('conversion.fiat'), '€ EUR', t('conversion.fiatHint'), true)}
      ${field('btc', 'Bitcoin', '₿ BTC', t('conversion.btcHint'))}
      ${field('mbtc', 'Millibitcoin', 'mBTC', `1 BTC = ${n(1e3)} mBTC`)}
      ${field('bit', 'Bit (µBTC)', 'bit', `1 BTC = ${n(1e6)} bits`)}
      ${field('sat', 'Satoshi', 'sat', `1 BTC = ${n(1e8)} sats`)}
      ${field('msat', 'Millisatoshi', 'msat', `1 sat = ${n(1e3)} msats · Lightning`)}
    </div>

    <div class="info">
      <div class="t-label info-title">${t('conversion.hierarchy')}</div>
      <div class="info-body">
        <strong>1 BTC</strong> = ${n(1e3)} mBTC = ${n(1e6)} bits = ${n(1e8)} sats = ${n(1e11)} msats<br>
        <strong>1 mBTC</strong> = ${n(1e3)} bits = ${n(1e5)} sats<br>
        <strong>1 bit</strong> = 100 sats · <strong>1 sat</strong> = ${n(1e3)} msats
      </div>
      <div class="info-note">${t('conversion.satNote')}</div>
    </div>

    <div class="conv-footer">${t('conversion.footer')}</div>`;

  const q = id => el.querySelector('#' + id);
  const currency = baseCurrency();
  let livePrice = null;

  function updateAll(sourceUnit, sourceValue) {
    const rate = livePrice;
    let btcValue;
    if (sourceUnit === 'fiat') {
      if (!rate) return;
      btcValue = sourceValue / rate;
    } else {
      btcValue = sourceValue * TO_BTC[sourceUnit];
    }
    UNITS.forEach(unit => {
      if (unit === sourceUnit) return;
      const value = unit === 'fiat' ? (rate ? btcValue * rate : 0) : btcValue / TO_BTC[unit];
      q(unit).value = formatUnit(unit, value);
    });
  }
  function recalcFromFiat() {
    const f = q('fiat');
    if (f.value) updateAll('fiat', parseNumber(f.value));
  }
  function renderPrice() {
    const rate = livePrice;
    q('price-display').textContent = rate ? fmtMoney(rate, currency, { decimals: 0 }) : `${currencySymbol(currency)} -`;
  }
  function applyCurrencyUI() {
    q('fiat-name').textContent = currencyName(currency);
    q('fiat-badge').textContent = `${currencySymbol(currency)} ${currency}`;
    renderPrice();
    recalcFromFiat();
  }

  UNITS.forEach(unit => q(unit).addEventListener('input', function () {
    updateAll(unit, parseNumber(this.value));
  }));
  applyCurrencyUI();
  const btc = (await listAssets()).find(a => a.symbol === 'BTC');
  Promise.resolve(btc ? liveSpotFor(btc) : null).then(p => {
    if (!p) { q('price-meta').textContent = t('conversion.rateUnavailable'); return; }
    livePrice = basePriceOf(p);
    renderPrice(); recalcFromFiat();
    const now = new Date().toLocaleTimeString(localeTag(), { hour: '2-digit', minute: '2-digit' });
    q('price-meta').textContent = `${t('conversion.updatedAt')} ${now}`;
  }).catch(() => { q('price-meta').textContent = t('conversion.rateUnavailable'); });
}

function field(id, name, badge, hint, isFiat = false) {
  const nameAttr = isFiat ? ' id="fiat-name"' : '';
  const badgeAttr = isFiat ? ' id="fiat-badge"' : '';
  return `
    <label class="field">
      <div class="field-head">
        <span class="field-name"${nameAttr}>${name}</span>
        <span class="badge"${badgeAttr}>${badge}</span>
      </div>
      <input type="text" class="field-input" id="${id}" placeholder="0" inputmode="decimal">
      <span class="field-hint">${hint}</span>
    </label>`;
}