introduce investment models
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2 changed files with 181 additions and 27 deletions
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@ -48,9 +48,12 @@ class ROICalculator {
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}
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getInputValues() {
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const investmentModel = document.querySelector('input[name="investment-model"]:checked').value;
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return {
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investmentAmount: parseFloat(document.getElementById('investment-amount').getAttribute('data-value')),
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timeframe: parseInt(document.getElementById('timeframe').value),
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investmentModel: investmentModel,
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loanInterestRate: parseFloat(document.getElementById('loan-interest-rate').value) / 100,
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revenuePerInstance: parseFloat(document.getElementById('revenue-per-instance').value),
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servalaShare: parseFloat(document.getElementById('servala-share').value) / 100,
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gracePeriod: parseInt(document.getElementById('grace-period').value)
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@ -61,15 +64,30 @@ class ROICalculator {
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const scenario = this.scenarios[scenarioKey];
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if (!scenario.enabled) return null;
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// Calculate investment scaling factor
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// Calculate loan payment if using loan model
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let monthlyLoanPayment = 0;
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if (inputs.investmentModel === 'loan') {
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const monthlyRate = inputs.loanInterestRate / 12;
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const numPayments = inputs.timeframe * 12;
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// Calculate fixed monthly payment using amortization formula
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if (monthlyRate > 0) {
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monthlyLoanPayment = inputs.investmentAmount *
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(monthlyRate * Math.pow(1 + monthlyRate, numPayments)) /
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(Math.pow(1 + monthlyRate, numPayments) - 1);
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} else {
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monthlyLoanPayment = inputs.investmentAmount / numPayments;
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}
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}
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// Calculate investment scaling factor (only for direct investment)
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// Base investment of CHF 500,000 = 1.0x multiplier
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// Higher investments get multiplicative benefits for instance acquisition
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const baseInvestment = 500000;
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const investmentScaleFactor = Math.sqrt(inputs.investmentAmount / baseInvestment);
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const investmentScaleFactor = inputs.investmentModel === 'loan' ? 1.0 : Math.sqrt(inputs.investmentAmount / baseInvestment);
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// Calculate churn reduction factor based on investment
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// Calculate churn reduction factor based on investment (only for direct investment)
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// Higher investment = better customer success = lower churn
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const churnReductionFactor = Math.max(0.7, 1 - (inputs.investmentAmount - baseInvestment) / 2000000 * 0.3);
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const churnReductionFactor = inputs.investmentModel === 'loan' ? 1.0 : Math.max(0.7, 1 - (inputs.investmentAmount - baseInvestment) / 2000000 * 0.3);
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// Calculate adjusted churn rate with investment-based reduction
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const adjustedChurnRate = scenario.churnRate * churnReductionFactor;
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@ -102,17 +120,26 @@ class ROICalculator {
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// Update total instances
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currentInstances = currentInstances + newInstances - churnedInstances;
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// Calculate revenue
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const monthlyRevenue = currentInstances * inputs.revenuePerInstance;
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// Determine revenue split based on grace period
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let cspRevenue, servalaRevenue;
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if (month <= inputs.gracePeriod) {
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cspRevenue = monthlyRevenue;
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// Calculate revenue based on investment model
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let cspRevenue, servalaRevenue, monthlyRevenue;
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if (inputs.investmentModel === 'loan') {
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// Loan model: CSP receives fixed monthly loan payment
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cspRevenue = monthlyLoanPayment;
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servalaRevenue = 0;
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monthlyRevenue = monthlyLoanPayment;
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} else {
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cspRevenue = monthlyRevenue * (1 - inputs.servalaShare);
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servalaRevenue = monthlyRevenue * inputs.servalaShare;
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// Direct investment model: Revenue based on instances
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monthlyRevenue = currentInstances * inputs.revenuePerInstance;
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// Determine revenue split based on grace period
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if (month <= inputs.gracePeriod) {
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cspRevenue = monthlyRevenue;
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servalaRevenue = 0;
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} else {
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cspRevenue = monthlyRevenue * (1 - inputs.servalaShare);
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servalaRevenue = monthlyRevenue * inputs.servalaShare;
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}
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}
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// Update cumulative revenue
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@ -148,6 +175,7 @@ class ROICalculator {
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return {
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scenario: scenario.name,
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investmentModel: inputs.investmentModel,
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finalInstances: currentInstances,
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totalRevenue,
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cspRevenue: cumulativeCSPRevenue,
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@ -341,9 +369,14 @@ class ROICalculator {
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tbody.innerHTML = '';
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Object.values(this.results).forEach(result => {
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const modelLabel = result.investmentModel === 'loan' ?
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'<span class="badge bg-warning">Loan</span>' :
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'<span class="badge bg-success">Direct</span>';
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const row = tbody.insertRow();
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row.innerHTML = `
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<td><strong>${result.scenario}</strong></td>
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<td>${modelLabel}</td>
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<td>${result.finalInstances.toLocaleString()}</td>
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<td>${this.formatCurrencyDetailed(result.totalRevenue)}</td>
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<td>${this.formatCurrencyDetailed(result.cspRevenue)}</td>
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@ -690,9 +723,13 @@ function exportToPDF() {
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const params = [
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['Investment Amount:', calculator.formatCurrencyDetailed(inputs.investmentAmount)],
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['Investment Timeframe:', `${inputs.timeframe} years`],
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['Investment Model:', inputs.investmentModel === 'loan' ? 'Loan Model' : 'Direct Investment'],
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...(inputs.investmentModel === 'loan' ? [['Loan Interest Rate:', `${(inputs.loanInterestRate * 100).toFixed(1)}%`]] : []),
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['Revenue per Instance:', calculator.formatCurrencyDetailed(inputs.revenuePerInstance)],
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['Servala Revenue Share:', `${(inputs.servalaShare * 100).toFixed(0)}%`],
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['Grace Period:', `${inputs.gracePeriod} months`]
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...(inputs.investmentModel === 'direct' ? [
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['Servala Revenue Share:', `${(inputs.servalaShare * 100).toFixed(0)}%`],
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['Grace Period:', `${inputs.gracePeriod} months`]
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] : [])
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];
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params.forEach(([label, value]) => {
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@ -808,16 +845,24 @@ function exportToCSV() {
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const inputs = calculator.getInputValues();
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csvContent += `Investment Amount,${inputs.investmentAmount}\n`;
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csvContent += `Timeframe (years),${inputs.timeframe}\n`;
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csvContent += `Investment Model,${inputs.investmentModel === 'loan' ? 'Loan Model' : 'Direct Investment'}\n`;
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if (inputs.investmentModel === 'loan') {
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csvContent += `Loan Interest Rate (%),${(inputs.loanInterestRate * 100).toFixed(1)}\n`;
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}
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csvContent += `Revenue per Instance,${inputs.revenuePerInstance}\n`;
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csvContent += `Servala Share (%),${(inputs.servalaShare * 100).toFixed(0)}\n`;
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csvContent += `Grace Period (months),${inputs.gracePeriod}\n\n`;
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if (inputs.investmentModel === 'direct') {
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csvContent += `Servala Share (%),${(inputs.servalaShare * 100).toFixed(0)}\n`;
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csvContent += `Grace Period (months),${inputs.gracePeriod}\n`;
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}
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csvContent += '\n';
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// Add scenario summary
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csvContent += 'SCENARIO SUMMARY\n';
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csvContent += 'Scenario,Final Instances,Total Revenue,CSP Revenue,Servala Revenue,ROI (%),Break-even (months)\n';
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csvContent += 'Scenario,Investment Model,Final Instances,Total Revenue,CSP Revenue,Servala Revenue,ROI (%),Break-even (months)\n';
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Object.values(calculator.results).forEach(result => {
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csvContent += `${result.scenario},${result.finalInstances},${result.totalRevenue.toFixed(2)},${result.cspRevenue.toFixed(2)},${result.servalaRevenue.toFixed(2)},${result.roi.toFixed(2)},${result.breakEvenMonth || 'N/A'}\n`;
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const modelText = result.investmentModel === 'loan' ? 'Loan' : 'Direct';
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csvContent += `${result.scenario},${modelText},${result.finalInstances},${result.totalRevenue.toFixed(2)},${result.cspRevenue.toFixed(2)},${result.servalaRevenue.toFixed(2)},${result.roi.toFixed(2)},${result.breakEvenMonth || 'N/A'}\n`;
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});
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csvContent += '\n';
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@ -872,6 +917,9 @@ function resetCalculator() {
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investmentInput.value = '500,000';
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document.getElementById('investment-slider').value = 500000;
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document.getElementById('timeframe').value = 3;
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document.getElementById('direct-model').checked = true;
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document.getElementById('loan-interest-rate').value = 5.0;
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document.getElementById('loan-rate-slider').value = 5.0;
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document.getElementById('revenue-per-instance').value = 50;
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document.getElementById('revenue-slider').value = 50;
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document.getElementById('servala-share').value = 25;
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@ -890,11 +938,36 @@ function resetCalculator() {
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// Reset advanced parameters
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resetAdvancedParameters();
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// Reset investment model toggle
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toggleInvestmentModel();
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// Recalculate (this will be called by resetAdvancedParameters, but we ensure it happens)
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updateCalculations();
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}
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}
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// Investment model toggle functions
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function toggleInvestmentModel() {
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const selectedModel = document.querySelector('input[name="investment-model"]:checked').value;
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const loanSection = document.getElementById('loan-rate-section');
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const modelDescription = document.getElementById('model-description');
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if (selectedModel === 'loan') {
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loanSection.style.display = 'block';
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modelDescription.textContent = 'Loan Model: Guaranteed returns with fixed monthly payments';
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} else {
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loanSection.style.display = 'none';
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modelDescription.textContent = 'Direct Investment: Higher potential returns based on your sales performance';
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}
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updateCalculations();
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}
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function updateLoanRate(value) {
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document.getElementById('loan-interest-rate').value = value;
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updateCalculations();
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}
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// Logout function
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function logout() {
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if (confirm('Are you sure you want to logout?')) {
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