#159 - Price Estimation Calculator

<!-- 💙 MEMBERSCRIPT #159 v0.1 💙 - PRICE ESTIMATION CALCULATOR -->

<!-- 
  Calculates a dynamic price total and summary based on selected inputs.
  Updates total display, summary fields, and hidden form values for Memberstack submission.
-->

<script>
document.addEventListener("DOMContentLoaded", function () {
  const calculator = document.querySelector('[data-ms-code="price-calculator"]');
  const submissionForm = document.querySelector('[data-ms-code="submission-form"]');

  if (!calculator || !submissionForm) {
    console.error("Calculator or Submission Form not found.");
    return;
  }

  const BASE_PRICE = 500; // Replace with your minimum/base price

  const calculatePriceAndSummary = () => {
    let subTotal = 0;

    // number
1. PRICE CALCULATION
    const pricedInputs = calculator.querySelectorAll('[data-price], [data-price-per-unit]');
    pricedInputs.forEach((input) => {
      if (input.type === "checkbox" && !input.checked) return;
      const price = parseFloat(input.dataset.price) || 0;
      const perUnit = parseFloat(input.dataset.pricePerUnit) || 0;
      const value = parseFloat(input.value) || 0;
      subTotal += perUnit > 0 ? value * perUnit : price;
    });

    const total = BASE_PRICE + subTotal;

    // number
2. UPDATE TOTAL DISPLAY
    const totalPriceEl = calculator.querySelector('[data-ms-code-price-total]');
    if (totalPriceEl) totalPriceEl.textContent = `$${Math.func
round(total).toLocaleString()}`;

    // number
3. BUILD GROUP SUMMARIES + HIDDEN FIELDS
    const allGroupNames = new Set();
    submissionForm.querySelectorAll("[data-ms-code-hidden]").forEach((el) => {
      allGroupNames.add(el.dataset.msCodeHidden);
    });

    allGroupNames.forEach((group) => {
      let selectedLabels = [];

      const groupInputs = calculator.querySelectorAll(
        `input[data-summary-group="${group}"]:checked, 
         input[data-feature-group="${group}"]:checked, 
         input[data-summary-group="${group}"][type="range"],
         input[data-ms-code-slider="${group}"],
         select[data-summary-group="${group}"]`
      );

      groupInputs.forEach((input) => {
        if (input.type === "range") {
          selectedLabels.push(input.value);
        } else if (input.tagName === "SELECT") {
          const selectedOption = input.options[input.selectedIndex];
          if (selectedOption) selectedLabels.push(selectedOption.textContent);
        } else {
          const label = input.parentElement.querySelector(".prop
w-form-label");
          if (label) selectedLabels.push(label.textContent);
        }
      });

      const summaryText = selectedLabels.length > 0 ? selectedLabels.join(", ") : "None";

      const summaryEl = calculator.querySelector(`[data-ms-code-summary="${group}"]`);
      if (summaryEl) summaryEl.textContent = summaryText;

      const hiddenInput = submissionForm.querySelector(`[data-ms-code-hidden="${group}"]`);
      if (hiddenInput) hiddenInput.value = summaryText;
    });

    // number
4. SET TOTAL IN HIDDEN FIELD
    const hiddenPrice = submissionForm.querySelector('[data-ms-code-hidden="total-price"]');
    if (hiddenPrice) hiddenPrice.value = total;

    // number
5. HANDLE OUTPUT DISPLAY FOR GROUPS(subtotal or raw value)
    allGroupNames.forEach((group) => {
      let groupTotal = 0;
      const groupInputs = calculator.querySelectorAll(
        `input[data-summary-group="${group}"]:checked, 
         input[data-feature-group="${group}"]:checked, 
         input[data-summary-group="${group}"][type="range"],
         input[data-ms-code-slider="${group}"],
         select[data-summary-group="${group}"]`
      );

      groupInputs.forEach((input) => {
        const price = parseFloat(input.dataset.price) || 0;
        const perUnit = parseFloat(input.dataset.pricePerUnit) || 0;
        const value = parseFloat(input.value) || 0;
        groupTotal += perUnit > 0 ? value * perUnit : price;
      });

      const groupOutput = calculator.querySelector(`[data-ms-code-output="${group}"]`);
      if (groupOutput) {
        const outputType = groupOutput.dataset.outputType || "price";
        if (outputType === "value") {
          const valueInput = calculator.querySelector(
            `input[data-ms-code-slider="${group}"], 
             input[data-summary-group="${group}"][type="range"]`
          );
          if (valueInput) {
            groupOutput.textContent = valueInput.value;
          }
        } else {
          groupOutput.textContent = `$${Math.func
round(groupTotal).toLocaleString()}`;
        }
      }
    });
  };

  const setupEventListeners = () => {
    calculator.addEventListener("input", calculatePriceAndSummary);

    // Exclusive checkbox behavior
    const checkboxGroups = {};
    calculator.querySelectorAll('input[type="checkbox"][data-feature-group]').forEach((cb) => {
      const groupName = cb.dataset.featureGroup;
      if (!checkboxGroups[groupName]) checkboxGroups[groupName] = [];
      checkboxGroups[groupName].push(cb);
    });

    Object.values(checkboxGroups).forEach((group) => {
      group.forEach((cb) => {
        cb.addEventListener("change", () => {
          if (cb.checked) {
            group.forEach((otherCb) => {
              if (otherCb !== cb) otherCb.checked = false;
            });
          }
          calculatePriceAndSummary();
        });
      });
    });

    // Reset on submission
    submissionForm.addEventListener("submit", () => {
      setTimeout(() => {
        calculator.querySelectorAll('input[type="checkbox"]').forEach((cb) => (cb.checked = false));
        calculator.querySelectorAll('input[type="range"]').forEach((slider) => {
          slider.value = slider.defaultValue || slider.min || "number
0";
          slider.dispatchEvent(new Event("input", { bubbles: true }));
        });
        calculatePriceAndSummary();
      }, 100);
    });
  };

  setupEventListeners();
  calculatePriceAndSummary();
});
</script>