No arbitrage opportunities found with the current exchange rates.

`; downloadPdfBtn.disabled = true; return; } opportunities.forEach(opp => { const card = document.createElement('div'); card.className = 'bg-green-50 border border-green-200 rounded-xl p-6 shadow-sm'; card.innerHTML = ` `; arbitrageResultsEl.appendChild(card); }); downloadPdfBtn.disabled = false; }; // --- LOGIC & EVENT HANDLERS --- const handleConfigUpdate = (e) => { if (e.target.classList.contains('config-input')) { const id = parseInt(e.target.closest('tr').dataset.id); const prop = e.target.dataset.prop; let value = e.target.value; if (e.target.type === 'number') { value = parseFloat(value); } else { value = value.toUpperCase().trim(); } const pair = exchangeRates.find(p => p.id === id); if(pair) pair[prop] = value; } }; const addPair = () => { exchangeRates.push({ id: nextPairId++, base: '', quote: '', rate: 0 }); renderConfigTable(); }; const removePair = (id) => { exchangeRates = exchangeRates.filter(p => p.id !== id); renderConfigTable(); }; const findArbitrage = () => { const rates = {}; const currencies = new Set(); exchangeRates.forEach(pair => { if (!pair.base || !pair.quote || !pair.rate) return; currencies.add(pair.base); currencies.add(pair.quote); if (!rates[pair.base]) rates[pair.base] = {}; if (!rates[pair.quote]) rates[pair.quote] = {}; rates[pair.base][pair.quote] = pair.rate; rates[pair.quote][pair.base] = 1 / pair.rate; }); const currencyList = Array.from(currencies); const opportunities = []; if (currencyList.length < 3) { renderArbitrageResults([]); switchTab('dashboard'); return; } for (let i = 0; i < currencyList.length; i++) { for (let j = 0; j < currencyList.length; j++) { for (let k = 0; k < currencyList.length; k++) { if (i === j || j === k || i === k) continue; const c1 = currencyList[i]; const c2 = currencyList[j]; const c3 = currencyList[k]; // Find path and calculate profit // Path: c1 -> c2 -> c3 -> c1 const rate1 = rates[c1] && rates[c1][c2]; const rate2 = rates[c2] && rates[c2][c3]; const rate3 = rates[c3] && rates[c3][c1]; if (rate1 && rate2 && rate3) { const finalAmount = 1 * rate1 * rate2 * rate3; if (finalAmount > 1) { const profit = (finalAmount - 1) * 100; // For execution steps example const startAmount = 1000; const amount2 = startAmount * rate1; const amount3 = amount2 * rate2; const finalStepAmount = amount3 * rate3; opportunities.push({ path: [c1, c2, c3, c1], profit: profit, steps: [ { rate: rate1, result: amount2 }, { rate: rate2, result: amount3 }, { rate: rate3, result: finalStepAmount } ] }); } } } } } // Sort by highest profit opportunities.sort((a, b) => b.profit - a.profit); renderArbitrageResults(opportunities); switchTab('dashboard'); }; const handlePdfDownload = () => { const pdfContent = document.getElementById('pdf-content'); const downloadButton = document.getElementById('download-pdf-btn'); downloadButton.style.visibility = 'hidden'; html2canvas(pdfContent, { scale: 2, backgroundColor: '#ffffff' }).then(canvas => { const imgData = canvas.toDataURL('image/png'); const { jsPDF } = window.jspdf; const pdf = new jsPDF({ orientation: 'portrait', unit: 'pt', format: 'a4' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const margin = 40; const contentWidth = pdfWidth - margin * 2; const canvasAspectRatio = canvas.width / canvas.height; const contentHeight = contentWidth / canvasAspectRatio; pdf.setFontSize(20); pdf.text("Currency Arbitrage Report", margin, margin); pdf.addImage(imgData, 'PNG', margin, margin + 20, contentWidth, contentHeight); pdf.save('Currency-Arbitrage-Report.pdf'); downloadButton.style.visibility = 'visible'; }); }; // --- EVENT LISTENERS --- window.switchTab = switchTab; window.navigateTabs = navigateTabs; configTableBody.addEventListener('change', handleConfigUpdate); configTableBody.addEventListener('click', e => { if (e.target.classList.contains('remove-pair-btn')) { removePair(parseInt(e.target.closest('tr').dataset.id)); } }); addPairBtn.addEventListener('click', addPair); analyzeBtn.addEventListener('click', findArbitrage); downloadPdfBtn.addEventListener('click', handlePdfDownload); // --- INITIALIZATION --- render(); switchTab('dashboard'); });