btcpayserver/BTCPayServer/Views/UIStores/PayButton.cshtml

@inject BTCPayServer.Security.ContentSecurityPolicies csp 
@model PayButtonViewModel
@{
    ViewData.SetActivePage(StoreNavPages.PayButton, "Pay Button", Context.GetStoreData().Id);
    csp.AllowUnsafeHashes("onBTCPayFormSubmit(event);return false");
    csp.AllowUnsafeHashes("handleSliderChange(event);return false");
    csp.AllowUnsafeHashes("handleSliderInput(event);return false");
    csp.AllowUnsafeHashes("handlePriceSlider(event);return false");
    csp.AllowUnsafeHashes("handlePriceInput(event);return false");
    csp.AllowUnsafeHashes("handlePlusMinus(event);return false");
}

@section PageHeadContent {
    <link rel="stylesheet" href="~/vendor/highlightjs/default.min.css" asp-append-version="true">
}

@section PageFootContent {
    <script src="~/vendor/highlightjs/highlight.min.js" asp-append-version="true"></script>
    <script src="~/vendor/vuejs/vue.js" asp-append-version="true"></script>
    <script src="~/vendor/vuejs-vee-validate/vee-validate.js" asp-append-version="true"></script>
    <script src="~/vendor/clipboard.js/clipboard.js" asp-append-version="true"></script>
    <script src="~/paybutton/paybutton.js" asp-append-version="true"></script>
    <template id="template-modal" csp-allow>
    if (!window.btcpay) {
        var script = document.createElement('script');
        script.src = @(Safe.Json(Model.UrlRoot + "modal/btcpay.js"));
        document.getElementsByTagName('head')[0].append(script);
    }
    function onBTCPayFormSubmit(event) {
        event.preventDefault();
        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200 && this.responseText) {
                window.btcpay.showInvoice(JSON.parse(this.responseText).invoiceId);
            }
        };
        xhttp.open('POST', event.target.getAttribute('action'), true);
        xhttp.send(new FormData(event.target));
    }
    </template>
    <template id="template-price-buttons" csp-allow>
    function handlePlusMinus(event) {
        event.preventDefault();
        const root = event.target.closest('.btcpay-form');
        const el = root.querySelector('.btcpay-input-price');
        const step = parseInt(event.target.dataset.step) || 1;
        const min = parseInt(event.target.dataset.min) || 1;
        const max = parseInt(event.target.dataset.max);
        const type = event.target.dataset.type;
        const price = parseInt(el.value) || min;
        if (type === '-') {
            el.value = price - step < min ? min : price - step;
        } else if (type === '+') {
            el.value = price + step > max ? max : price + step;
        }
    }
    </template>
    <template id="template-price-input" csp-allow>
    function handlePriceInput(event) {
        event.preventDefault();
        const root = event.target.closest('.btcpay-form');
        const price = parseInt(event.target.dataset.price);
        if (isNaN(event.target.value)) root.querySelector('.btcpay-input-price').value = price;
        const min = parseInt(event.target.getAttribute('min')) || 1;
        const max = parseInt(event.target.getAttribute('max'));
        if (event.target.value < min) {
            event.target.value = min;
        } else if (event.target.value > max) { 
            event.target.value = max;
        }
    }
    </template>
    <template id="template-price-slider" csp-allow>
    function handleSliderChange(event) {
        event.preventDefault();
        const root = event.target.closest('.btcpay-form');
        const el = root.querySelector('.btcpay-input-price');
        const price = parseInt(el.value);
        const min = parseInt(event.target.getAttribute('min')) || 1;
        const max = parseInt(event.target.getAttribute('max'));
        if (price < min) { 
            el.value = min;
        } else if (price > max) {
            el.value = max;
        } 
        root.querySelector('.btcpay-input-range').value = el.value;
    }
    
    function handleSliderInput(event) {
        event.target.closest('.btcpay-form').querySelector('.btcpay-input-price').value = event.target.value;
    }
    </template>
    
    
    <script>
        const srvModel = @Safe.Json(Model);
        const payButtonCtrl = new Vue({
            el: '#payButtonCtrl',
            data: {
                srvModel: srvModel,
                originalButtonImageUrl: srvModel.payButtonImageUrl,
                buttonInlineTextMode: false
            },
            computed: {
                imageUrlRequired() {
                    return !this.buttonInlineTextMode;
                }
            },
            methods: {
                inputChanges(event, buttonSize) {
                    inputChanges(event, buttonSize);
                }
            },
            watch: {
                buttonInlineTextMode(checked) {
                    if (!checked) {
                        this.srvModel.payButtonText = '';
                        this.srvModel.payButtonImageUrl = this.originalButtonImageUrl;
                    } else {
                        this.srvModel.payButtonText = 'Pay with';
                        this.srvModel.payButtonImageUrl = `${this.srvModel.urlRoot}img/logo.svg`;
                    }
                    this.inputChanges();
                }
            }
        });
    </script>
}

<partial name="_StatusMessage" />

<h2 class="mt-1 mb-4">@ViewData["Title"]</h2>
<div id="payButtonCtrl">
    <div class="row">
        <div class="col-xl-8">
            <div class="alert alert-warning alert-dismissible mb-4" role="alert">
                <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close">
                    <vc:icon symbol="close" />
                </button>
                <p><strong>Warning:</strong> This feature should not be activated on a BTCPay Server store processing commercial transactions.</p>
                <p>By activating this feature, a malicious user can trick you into thinking an order has been processed by creating a new invoice, reusing the same Order Id of another valid order but different amount or currency.</p>
                <p>If this store process commercial transactions, we advise you to <a asp-controller="UIUserStores" asp-action="CreateStore" class="alert-link">create a separate store</a> before using the payment button.</p>
                <form asp-action="DisableAnyoneCanCreateInvoice" asp-route-storeId="@Context.GetRouteValue("storeId")" method="post">
                    <button name="command" id="disable-pay-button" type="submit" class="btn btn-danger mt-0" value="Save">Disable payment button</button>
                </form>
            </div>
            <p>Configure your Pay Button, and the generated code will be displayed at the bottom of the page to copy into your project.</p>
            <h4 class="mt-3 mb-3">General Settings</h4>
            <div class="form-group col-md-8">
                <label class="form-label" for="price">Price</label>
                <input name="price" type="text" class="form-control" id="price"
                       v-model="srvModel.price" v-on:change="inputChanges"
                       v-validate="'decimal|min_value:0'" :class="{'is-invalid': errors.has('price') }">
                <small class="text-danger">{{ errors.first('price') }}</small>
            </div>
            <div class="form-group col-md-4" v-if="!srvModel.appIdEndpoint">
                <label class="form-label" for="currency">Currency</label>
                <input name="currency" type="text" class="form-control" id="currency"
                       v-model="srvModel.currency" v-on:change="inputChanges"
                       :class="{'is-invalid': errors.has('currency') }">
            </div>
            <div class="form-group" v-if="!srvModel.appIdEndpoint">
                <label class="form-label" for="description">Checkout Description</label>
                <input name="checkoutDesc" type="text" class="form-control" id="description"
                       v-model="srvModel.checkoutDesc" v-on:change="inputChanges">
            </div>
            <div class="form-group">
                <label class="form-label" for="order-id">Order ID</label>
                <input name="orderId" type="text" class="form-control" id="order-id"
                       v-model="srvModel.orderId" v-on:change="inputChanges">
            </div>
        </div>
    </div>

    <h4 class="mt-5 mb-3">Display Options</h4>
    <div class="row">
        <div class="col-xl-8 col-xxl-constrain">
            <div class="form-group">
                <div class="form-check" v-if="!srvModel.appIdEndpoint">
                    <input id="useModal" type="checkbox" v-model="srvModel.useModal" v-on:change="inputChanges" class="form-check-input"/>
                    <label for="useModal" class="form-check-label">Use Modal</label>
                </div>
                <div class="form-check">
                    <input id="buttonInlineTextMode" type="checkbox" v-model="buttonInlineTextMode" v-on:change="inputChanges" class="form-check-input"/>
                    <label for="buttonInlineTextMode" class="form-check-label">Customize Pay Button Text</label>
                </div>
            </div>
            
            <div class="form-group" v-show="buttonInlineTextMode">
                <label class="form-label" for="pb-text">Pay Button Text</label>
                <input name="payButtonText" type="text" class="form-control" id="pb-text"
                       v-model="srvModel.payButtonText" v-on:change="inputChanges">
            </div>
            <div class="form-group mb-4">
                <label class="form-label" for="pb-image-url">Pay Button Image Url</label>
                <input name="payButtonImageUrl" type="text" class="form-control" id="pb-image-url"
                       v-model="srvModel.payButtonImageUrl" v-on:change="inputChanges"
                       v-validate="{ required: this.imageUrlRequired, url: {require_tld:false} }"
                       :class="{'is-invalid': errors.has('payButtonImageUrl') }">
                <small class="text-danger">{{ errors.first('payButtonImageUrl') }}</small>
            </div>
            <div class="form-group mb-4">
                <label class="form-label">Image Size</label>
                <div class="btn-group d-flex" role="group">
                    <button type="button" class="btn btn-outline-secondary" 
                            v-on:click="inputChanges($event, 0)">146 x 40 px</button>
                    <button type="button" class="btn btn-outline-secondary"
                            v-on:click="inputChanges($event, 1)">168 x 46 px</button>
                    <button type="button" class="btn btn-outline-secondary"
                            v-on:click="inputChanges($event, 2)">209 x 57 px</button>
                </div>
            </div>
            <div class="form-group">
                <label class="form-label">Button Type</label>
                <div class="form-check">
                    <input class="form-check-input" type="radio" name="button-type" id="btn-fixed" value="0" v-model="srvModel.buttonType" v-on:change="inputChanges" checked/>
                    <label for="btn-fixed" class="form-check-label">Fixed amount</label>
                </div>
                <div class="form-check">
                    <input class="form-check-input" type="radio" name="button-type" id="btn-custom" value="1" v-model="srvModel.buttonType" v-on:change="inputChanges"/>
                    <label for="btn-custom" class="form-check-label">Custom amount</label>
                </div>
                <div class="form-check">
                    <input class="form-check-input" type="radio" name="button-type" id="btn-slider" value="2" v-model="srvModel.buttonType" v-on:change="inputChanges"/>
                    <label for="btn-slider" class="form-check-label">Slider</label>
                </div>
            </div>
            <div class="row" v-if="srvModel.buttonType === '1' ||srvModel.buttonType === '2'">
                <div class="form-group col-md-4">
                    <label class="form-label" for="pb-min">Min</label>
                    <input name="min" type="text" class="form-control" id="pb-min"
                           v-model="srvModel.min" v-on:change="inputChanges"
                           v-validate="'required|decimal|min_value:0'" :class="{'is-invalid': errors.has('min') }">
                    <small class="text-danger">{{ errors.first('min') }}</small>
                </div>
                <div class="form-group col-md-4">
                    <label class="form-label" for="pb-max">Max</label>
                    <input name="max" type="text" class="form-control" id="pb-max"
                           v-model="srvModel.max" v-on:change="inputChanges"
                           v-validate="'required|decimal'" :class="{'is-invalid': errors.has('max') }">
                    <small class="text-danger">{{ errors.first('max') }}</small>
                </div>
                <div class="form-group col-md-4">
                    <label class="form-label" for="pb-step">Step</label>
                    <input name="step" type="text" class="form-control" id="pb-step"
                           v-model="srvModel.step" v-on:change="inputChanges"
                           v-validate="'required'" :class="{'is-invalid': errors.has('step') }">
                    <small class="text-danger">{{ errors.first('step') }}</small>
                </div>
            </div>
            <template v-if="srvModel.buttonType === '1'">
                <div class="form-check">
                    <input name="simpleInput"
                           id="simpleInput"
                           type="checkbox"
                           class="form-check-input"
                           v-model="srvModel.simpleInput"
                           v-on:change="inputChanges"
                           :class="{'is-invalid': errors.has('simpleInput') }">
                    <label class="form-check-label" for="simpleInput">Use a simple input style</label>
                    <small class="text-danger">{{ errors.first('simpleInput') }}</small>
                </div>
                <div class="form-check">
                    <input name="fitButtonInline"
                           id="fitButtonInline"
                           type="checkbox"
                           class="form-check-input"
                           v-model="srvModel.fitButtonInline"
                           v-on:change="inputChanges"
                           :class="{'is-invalid': errors.has('fitButtonInline') }">
                    <label class="form-check-label" for="fitButtonInline">Fit button inline</label>
                    <small class="text-danger">{{ errors.first('fitButtonInline') }}</small>
                </div>
            </template>
        </div>
        <div class="col-xl-4 mt-4 mt-xl-0">
            <h5 class="mb-3">Preview</h5>
            <div id="preview"></div>
            <div v-show="!srvModel.appIdEndpoint">
                <h5 class="mt-4 mb-3">Link</h5>
                <span>Alternatively, you can share <a id="preview-link" href="#">this link</a> or encode it in a QR code.</span>
            </div>
        </div>
    </div>

    <h4 class="mt-5 mb-3">Payment Notifications</h4>
    <div class="row">
        <div class="col-xl-8 col-xxl-constrain">
            <div class="form-group">
                <label class="form-label" for="server-ipn">Server IPN</label>
                <input name="serverIpn" type="text" class="form-control" id="server-ipn"
                       v-model="srvModel.serverIpn" v-on:change="inputChanges"
                       v-validate="'url'" :class="{'is-invalid': errors.has('serverIpn') }">
                <small class="text-danger">{{ errors.first('serverIpn') }}</small>
                <p class="form-text text-muted">
                    The URL to post purchase data.
                </p>
            </div>
            <div class="form-group" v-if="!srvModel.appIdEndpoint">
                <label class="form-label" for="email-notifications">Email Notifications</label>
                <input name="notifyEmail" type="text" class="form-control" id="email-notifications"
                       placeholder="name@domain.com"
                       v-model="srvModel.notifyEmail" v-on:change="inputChanges"
                       v-validate="'email'" :class="{'is-invalid': errors.has('notifyEmail') }">
                <small class="text-danger">{{ errors.first('notifyEmail') }}</small>
                <p class="form-text text-muted">
                    Receive email notification updates.
                </p>
            </div>
            <div class="form-group">
                <label class="form-label" for="browser-redirect">Browser Redirect</label>
                <input name="browserRedirect" type="text" class="form-control" id="browser-redirect"
                       v-model="srvModel.browserRedirect" v-on:change="inputChanges"
                       v-validate="'url'" :class="{'is-invalid': errors.has('browserRedirect') }">
                <small class="text-danger">{{ errors.first('browserRedirect') }}</small>
                <p class="form-text text-muted">
                    Where to redirect the customer after payment is complete.
                </p>
            </div>
        </div>
    </div>

    <h4 class="mt-5 mb-3">Advanced Options</h4>
    <div class="row" v-if="!srvModel.appIdEndpoint">
        <div class="col-xl-8 col-xxl-constrain">
            <p>
                Specify additional query string parameters that should be appended to the checkout page once the invoice is created.
                For example, <code>lang=da-DK</code> would load the checkout page in Danish by default.
            </p>
            <div class="form-group">
                <label class="form-label" for="query-string">Checkout Additional Query String</label>
                <input name="checkoutQueryString" type="text" class="form-control" id="query-string"
                       v-model="srvModel.checkoutQueryString" v-on:change="inputChanges"
                       :class="{'is-invalid': errors.has('checkoutQueryString') }">
                <small class="text-danger">{{ errors.first('checkoutQueryString') }}</small>
            </div>
        </div>
    </div>

    <div class="row">
        <div class="col-xl-8 col-xxl-constrain">
            <p>Link this Pay Button to an app instead. Some features are disabled due to the different endpoint capabilities. You can set which perk/item this button should be targeting.</p>
            <div class="form-group">
                <label class="form-label" for="app-as-endpoint">Use App As Endpoint</label>
                <select v-model="srvModel.appIdEndpoint" v-on:change="inputChanges" class="form-select" id="app-as-endpoint">
                    <option value="">Use default pay button endpoint</option>
                    <option  v-for="app in srvModel.apps" v-bind:value="app.id" >{{app.appName}} ({{app.appType}})</option>
                </select>
                <small class="text-danger">{{ errors.first('appIdEndpoint') }}</small>
            </div>
            <div class="form-group" v-if="srvModel.appIdEndpoint">
                <label class="form-label" for="app-item">App Item/Perk</label>
                <input name="appChoiceKey" type="text" class="form-control" id="app-item"
                       v-model="srvModel.appChoiceKey" v-on:change="inputChanges"
                       :class="{'is-invalid': errors.has('appChoiceKey') }">
                <small class="text-danger">{{ errors.first('appChoiceKey') }}</small>
            </div>
        </div>
    </div>

    <h4 class="mt-5 mb-3">Generated Code</h4>

    <div class="row" v-show="!errors.any()">
        <div class="col-xxl-8">
            <pre><code id="mainCode" class="html"></code></pre>
            <button class="btn btn-primary" data-clipboard-target="#mainCode">
                <i class="fa fa-copy"></i> Copy Code
            </button>
        </div>
    </div>
    <div class="row" v-show="errors.any()">
        <div class="col-xl-8 col-xxl-constrain text-danger">
            Please fix errors shown in order for code generation to successfully execute.
        </div>
    </div>
</div>

<script id="template-paybutton-styles" type="text/template">
    <style>
        .btcpay-form {
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .btcpay-form--inline {
            flex-direction: row;
        }
        .btcpay-form--block {
            flex-direction: column;
        }
        .btcpay-form--inline .submit {
            margin-left: 15px;
        }
        .btcpay-form--block select {
            margin-bottom: 10px;
        }
        .btcpay-form .btcpay-custom-container{
            text-align: center;
        }
         .btcpay-custom {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .btcpay-form .plus-minus {
            cursor:pointer;
            font-size:25px;
            line-height: 25px;
            background: #DFE0E1;
            height: 30px;
            width: 45px;
            border:none;
            border-radius: 60px;
            margin: auto 5px;
            display: inline-flex;
            justify-content: center;
        }
        .btcpay-form select {
            -moz-appearance: none;
            -webkit-appearance: none;
            appearance: none;
            color: currentColor;
            background: transparent;
            border:1px solid transparent;
            display: block;
            padding: 1px;
            margin-left: auto;
            margin-right: auto;
            font-size: 11px;
            cursor: pointer;
        }
        .btcpay-form select:hover {
            border-color: #ccc;
        }
        .btcpay-form option {
            color: #000;
            background: rgba(0,0,0,.1);
        }
        .btcpay-input-price {
            -moz-appearance: textfield;
            border: none;
            box-shadow: none;
            text-align: center;
            font-size: 25px;
            margin: auto;
            border-radius: 5px;
            line-height: 35px;
            background: #fff;
        }
        
        .btcpay-input-price::-webkit-outer-spin-button,
        .btcpay-input-price::-webkit-inner-spin-button {
          -webkit-appearance: none;
          margin: 0;
        }
    </style>
</script>

<script id="template-slider-styles" type="text/template">
    <style>
        input[type=range].btcpay-input-range {
            -webkit-appearance:none;
            width:100%;
            background: transparent;
        }
        input[type=range].btcpay-input-range:focus {
            outline:0;
        }
        input[type=range].btcpay-input-range::-webkit-slider-runnable-track {
            width:100%;
            height:3.1px;
            cursor:pointer;
            box-shadow:0 0 1.7px #020,0 0 0 #003c00;
            background:#f3f3f3;
            border-radius:1px;
            border:0;
        }
        input[type=range].btcpay-input-range::-webkit-slider-thumb {
            box-shadow:none;
            border:2.5px solid #cedc21;
            height:22px;
            width:22px;
            border-radius:50%;
            background:#0f3723;
            cursor:pointer;
            -webkit-appearance:none;
            margin-top:-9.45px
        }
        input[type=range].btcpay-input-range:focus::-webkit-slider-runnable-track {
            background:#fff;
        }
        input[type=range].btcpay-input-range::-moz-range-track {
            width:100%;
            height:3.1px;
            cursor:pointer;
            box-shadow:0 0 1.7px #020,0 0 0 #003c00;
            background:#f3f3f3;
            border-radius:1px;
            border:0;
        }
        input[type=range].btcpay-input-range::-moz-range-thumb {
            box-shadow:none;
            border:2.5px solid #cedc21;
            height:22px;
            width:22px;
            border-radius:50%;
            background:#0f3723;
            cursor:pointer;
        }
        input[type=range].btcpay-input-range::-ms-track {
            width:100%;
            height:3.1px;
            cursor:pointer;
            background:0 0;
            border-color:transparent;
            color:transparent;
        }
        input[type=range].btcpay-input-range::-ms-fill-lower {
            background:#e6e6e6;
            border:0;
            border-radius:2px;
            box-shadow:0 0 1.7px #020,0 0 0 #003c00;
        }
        input[type=range].btcpay-input-range::-ms-fill-upper {
            background:#f3f3f3;
            border:0;
            border-radius:2px;
            box-shadow:0 0 1.7px #020,0 0 0 #003c00;
        }
        input[type=range].btcpay-input-range::-ms-thumb {
            box-shadow:none;
            border:2.5px solid #cedc21;
            height:22px;
            width:22px;
            border-radius:50%;
            background:#0f3723;
            cursor:pointer;
            height:3.1px;
        }
        input[type=range].btcpay-input-range:focus::-ms-fill-lower {
            background:#f3f3f3;
        }
        input[type=range].btcpay-input-range:focus::-ms-fill-upper {
            background:#fff;
        }
    </style>
</script>