{% extends "layouts/base.html" %}
{% load i18n %}
{% load webpack_loader %}

{% block title %}{% translate 'Unit Price Calculator' %}{% endblock %}

{% block content %}
  <div class="container px-md-3 py-3 column-gap-5">
    <div class="tw-text-3xl fw-bold font-monospace tw-w-full mb-3">
      <div>{% translate 'Unit Price Calculator' %}</div>
    </div>
    <div class="card mb-3 d-none" id="card-placeholder">
      <div class="card-header d-flex flex-row justify-content-between">
        <h5 class="title flex-grow-1"></h5>
        <button class="btn btn-secondary btn-sm text-danger"
                role="button"
                data-bs-toggle="tooltip"
                data-bs-title="{% translate "Delete" %}"
                _="on click remove the closest .card to me then trigger update on #items then call bootstrap.Tooltip.getOrCreateInstance(me).dispose()">
          <i class="fa-solid fa-trash fa-fw"></i>
        </button>
      </div>
      <div class="card-body">
        <div class="row gy-3">
          <div class="col-lg">
            <div>
              <label for="price" class="form-label">{% trans 'Item price' %}</label>
              <input type="number" inputmode="decimal" class="form-control item-price" id="price">
            </div>
          </div>
          <div class="col-lg">
            <div>
              <label for="amount" class="form-label">{% trans 'Item amount' %}</label>
              <input type="number" inputmode="decimal" class="form-control item-amount" id="amount">
            </div>
          </div>
          <div class="col-lg">
            <label class="form-label">{% trans 'Unit price' %}</label>
            <div class="unit-price tw-text-xl" data-amount="0">0</div>
          </div>
        </div>
      </div>
    </div>
    <div id="items" _="on input or update
                      for card in <.card />
                        set price to card.querySelector('.item-price').value
                        set amount to card.querySelector('.item-amount').value

                        // Calculate and format unit price
                        if amount > 0 set unitPrice to (price / amount) else set unitPrice to 0 end
                        set formattedUnitPrice to unitPrice.toLocaleString(undefined, {minimumFractionDigits: 0, maximumFractionDigits: 40})

                        set card.querySelector('.unit-price').innerHTML to formattedUnitPrice
                        call card.querySelector('.unit-price').setAttribute('data-amount', unitPrice)
                      end

                      then

                      // Remove existing highlight classes from all unit prices
                      for unitPriceEl in <.unit-price/>
                        remove .bg-danger-subtle from the closest .card to unitPriceEl
                        remove .bg-success-subtle from the closest .card to unitPriceEl
                      end

                      // Get all unit prices and find min/max
                      set unitPrices to <.card:not(#card-placeholder) .unit-price/>
                      set unitPricesAmounts to <.card:not(#card-placeholder) .unit-price/> @data-amount
                      js(unitPricesAmounts)
                        unitPricesAmounts = unitPricesAmounts.filter(element => element !== '0')
                        return Math.min(...unitPricesAmounts)
                      end
                      set minAmount to it
                      js(unitPricesAmounts)
                        unitPricesAmounts = unitPricesAmounts.filter(element => element !== '0')
                        return Math.max(...unitPricesAmounts)
                      end
                      set maxAmount to it

                      if maxAmount and minAmount
                        for unitPriceEl in unitPrices
                          set amount to parseFloat(unitPriceEl.getAttribute('data-amount'))
                          if amount == minAmount
                            add .bg-success-subtle to the closest .card to unitPriceEl
                            continue
                          end
                          if amount == maxAmount
                            add .bg-danger-subtle to the closest .card to unitPriceEl
                          end
                        end
                      end
                    end">
      <div class="card mb-3">
        <div class="card-header">
          <h5>{% trans "Item" %} A</h5>
        </div>
        <div class="card-body">
          <div class="row gy-3">
            <div class="col-lg">
              <div>
                <label for="price" class="form-label">{% trans 'Item price' %}</label>
                <input type="number" inputmode="decimal" class="form-control item-price" id="price">
              </div>
            </div>
            <div class="col-lg">
              <div>
                <label for="amount" class="form-label">{% trans 'Item amount' %}</label>
                <input type="number" inputmode="decimal" class="form-control item-amount" id="amount">
              </div>
            </div>
            <div class="col-lg">
              <label class="form-label">{% trans 'Unit price' %}</label>
              <div class="unit-price tw-text-xl" data-amount="0">0</div>
            </div>
          </div>
        </div>
      </div>
      <div class="card mb-3">
        <div class="card-header">
          <h5>{% trans "Item" %} B</h5>
        </div>
        <div class="card-body">
          <div class="row gy-3">
            <div class="col-lg">
              <div>
                <label for="price" class="form-label">{% trans 'Item price' %}</label>
                <input type="number" inputmode="decimal" class="form-control item-price" id="price">
              </div>
            </div>
            <div class="col-lg">
              <div>
                <label for="amount" class="form-label">{% trans 'Item amount' %}</label>
                <input type="number" inputmode="decimal" class="form-control item-amount" id="amount">
              </div>
            </div>
            <div class="col-lg">
              <label class="form-label">{% trans 'Unit price' %}</label>
              <div class="unit-price tw-text-xl" data-amount="0">0</div>
            </div>
          </div>
        </div>
      </div>
    </div>

    <div class="row mt-3">
      <div class="col-lg-8">
        <button class="btn btn-outline-primary w-100"
            _="on click
                get #card-placeholder
                set newCard to it.cloneNode(true)
                remove @id from newCard
                remove .d-none from newCard then
                set itemCount to <#items .card/>'s length
                if itemCount < 26
                  set letter to String.fromCharCode(65 + itemCount)
                else
                  set letter to String.fromCharCode(65 + Math.floor((itemCount - 26) / 26)) + String.fromCharCode(65 + ((itemCount - 26) mod 26))
                end
                set newCard.querySelector('.title').innerHTML to `{% trans "Item" %} ${letter}`
                put newCard as HTML at the end of #items
                trigger tooltips on body
              end">
      {% trans 'Add' %}
    </button>
      </div>
      <div class="col-lg-4 mt-3 mt-lg-0">
        <button class="btn btn-outline-danger w-100"
                _="on click
                    for el in <.item-price, .item-amount />
                      set card to the closest .card to el
                      set el's value to ''
                     end
                     trigger update on #items
                  end">
          {% trans 'Clear' %}
        </button>
      </div>
    </div>
  </div>
{% endblock %}
