{{ block title }} Task {{ task_order }} {{ endblock }}
{{ block content }}


<div class="instructions well well-lg" style="">
    <p>
        If this task is the one that has been selected for payment, you will be given {{Constants.x0}} pieces of chocolate
        and {{Constants.y0}} dollars.

        <br><br> In addition, you are offered to choose one of the two extra payments.
        <ul>
            <li> In option A, you can get extra {{Constants.dy2}} dollars. </li>
            <li> Option B contains some extra chocolates as shown in each row in the table below. </li>
        </ul>
        <br> Option A are preselected in all the rows. You can change to option B in any rows as you want.

        <br><br> If this task is the one that has been selected for payment, one of the row will be selected. Your payment will be {{Constants.x0}} pieces of chocolate
        and {{Constants.y0}} dollars plus the extra payment option you choose in the row.
        Since you do not know which row will be selected for extra payment, you should choose for each row as if it were the one row chosen for extra payment.
        <br><br>
        Please note that the chocolate flavor in the graph below are just example. You can choose different flavors as your want in the payment stage.
        <br>

        <img src="{{ static 'incomplete_preference/EGx_2.png' }}" style="width: 750px" align="middle"/>

    </p>

</div>


<input type="hidden" name="egx_2" id="egx_2">
{{ formfield_errors "egx_2" }}
<form method="post" id="form">
<table class="table table-striped">
    <colgroup>
        <col width="4%">
        <col width="42%">
        <col width="14%">
        <col width="42%">
    </colgroup>
    <tr>
        <td align = "middle"><b>Row Number</b> </td>
        <td align="right"><b>Choose Option A</b></td>
        <td></td>
        <td align="left"><b>Choose Option B</b></td>
    </tr>
    {{ for m in list_c }}
        <tr>
        <td align = "middle"> {{ m }} </td>
        <td align="right">
           Option A: extra {{Constants.dy2}} dollars
        <td align="middle">
            <input type="radio"
                   value="left"
                   name="egx_2_{{ m }}"
                   checked
                   required >
            <input type="radio"
                   name="egx_2_{{ m }}"
                   value="right"
                   data-amount="{{ m }}"
                   required>
        </td>
        <td align="left">
            Option B: extra {{m}} pieces of chocolate
    </tr>
    {{ endfor }}
</table>

<button type="button" class="btn btn-primary" onClick="submitForm();">Next</button>
</form>

{{ endblock }}

{{ block scripts }}

<script>

    let allRadios = document.querySelectorAll('input[type=radio]')
    let len_list_c = parseFloat('{{ len_list_c }}')
    function submitForm() {
        if (document.getElementById('egx_2') !== null) {
            let form = document.getElementById('form');
            let checkedRadios = document.querySelectorAll('input[type=radio]:checked');
            if (checkedRadios.length === len_list_c) {
                if (form.reportValidity()) {
                    let choices = document.getElementById('egx_2');
                    let choices_tmp = "";
                    let allChoicesAreOnLeft = true;
                    for (let radio of allRadios) {
                        if (radio.value === 'right' && radio.checked) {
                            choices_tmp = choices_tmp + "R";
                            allChoicesAreOnLeft = false;
                        }
                        if (radio.value === 'left' && radio.checked) {
                            choices_tmp = choices_tmp + "L";
                        }
                    }
                    choices.value = choices_tmp;
                    form.submit();
                }
            }
        if   (checkedRadios.length < len_list_c) {
            alert('Please complete all rows')
        }
        }
    }


    function onRadioClick(evt) {
        let clickedRadio = evt.target;
        let afterClickedRadio = false;
        let clickedRightRadio = clickedRadio.value === 'right';
        let clickedLeftRadio = clickedRadio.value === 'left';

        if(clickedRadio.value === 'right'){
        for (let aRadio of allRadios) {
            if (aRadio === clickedRadio) {
                afterClickedRadio = true;
            }
            if (clickedRightRadio && !afterClickedRadio && aRadio.value === 'left') {
                aRadio.checked = true;
            }
            if (clickedRightRadio && afterClickedRadio && aRadio.value === 'right') {
                aRadio.checked = true;
            }
        }
        }
        if(clickedRadio.value === 'left'){
        for (let aRadio of allRadios) {
            if (aRadio === clickedRadio) {
                afterClickedRadio = true;
                continue;
            }
            if (!afterClickedRadio &&  aRadio.value === 'left') {
                aRadio.checked = true;
            }
            if (afterClickedRadio && aRadio.value === 'right') {
                aRadio.checked = true;
            }
           }
         for (let aRadio of allRadios) {
            if (aRadio === clickedRadio && aRadio.value === 'left') {
              aRadio.checked = true;
            }
           }
        }
    }


    document.addEventListener("DOMContentLoaded", function (event) {
        for (let radio of document.querySelectorAll('input[type=radio]')) {
            radio.onchange = onRadioClick;
        }
    });

</script>


{{ endblock }}