From c640289f4fe6477d3c0f6de364df9365e93f711d Mon Sep 17 00:00:00 2001
From: Mario Dian <mariodian@gmail.com>
Date: Mon, 21 Sep 2020 14:06:31 +0800
Subject: [PATCH] App: Light PoS on top of the existing PoS (#1909)

* Initial commit

* review fixes

* Fix padding of logo, readjust display font size when clearing numbers

Co-authored-by: Kukks <evilkukka@gmail.com>
---
 .../Controllers/AppsPublicController.cs       |  3 +
 .../AppViewModels/ViewPointOfSaleViewModel.cs |  1 +
 BTCPayServer/Services/Apps/AppType.cs         |  3 +-
 .../Views/AppsPublic/PointOfSale/Light.cshtml | 16 +++
 .../PointOfSale/MinimalLight.cshtml           | 26 +++++
 .../AppsPublic/PointOfSale/VueLight.cshtml    | 40 ++++++++
 BTCPayServer/Views/Shared/_LayoutPos.cshtml   |  8 ++
 BTCPayServer/bundleconfig.json                | 13 +++
 BTCPayServer/wwwroot/light-pos/app.js         | 99 +++++++++++++++++++
 .../wwwroot/light-pos/styles/main.css         | 54 ++++++++++
 10 files changed, 262 insertions(+), 1 deletion(-)
 create mode 100644 BTCPayServer/Views/AppsPublic/PointOfSale/Light.cshtml
 create mode 100644 BTCPayServer/Views/AppsPublic/PointOfSale/MinimalLight.cshtml
 create mode 100644 BTCPayServer/Views/AppsPublic/PointOfSale/VueLight.cshtml
 create mode 100644 BTCPayServer/wwwroot/light-pos/app.js
 create mode 100644 BTCPayServer/wwwroot/light-pos/styles/main.css

diff --git a/BTCPayServer/Controllers/AppsPublicController.cs b/BTCPayServer/Controllers/AppsPublicController.cs
index be7dd71a2..cfd8b2f47 100644
--- a/BTCPayServer/Controllers/AppsPublicController.cs
+++ b/BTCPayServer/Controllers/AppsPublicController.cs
@@ -65,6 +65,8 @@ namespace BTCPayServer.Controllers
             var numberFormatInfo = _AppService.Currencies.GetNumberFormatInfo(settings.Currency) ?? _AppService.Currencies.GetNumberFormatInfo("USD");
             double step = Math.Pow(10, -(numberFormatInfo.CurrencyDecimalDigits));
             viewType ??= settings.EnableShoppingCart ? PosViewType.Cart : settings.DefaultView;
+            var store = await _AppService.GetStore(app);
+            var storeBlob = store.GetStoreBlob();
 
             return View("PointOfSale/" + viewType, new ViewPointOfSaleViewModel()
             {
@@ -91,6 +93,7 @@ namespace BTCPayServer.Controllers
                 CustomTipText = settings.CustomTipText,
                 CustomTipPercentages = settings.CustomTipPercentages,
                 CustomCSSLink = settings.CustomCSSLink,
+                CustomLogoLink = storeBlob.CustomLogo,
                 AppId = appId,
                 Description = settings.Description,
                 EmbeddedCSS = settings.EmbeddedCSS
diff --git a/BTCPayServer/Models/AppViewModels/ViewPointOfSaleViewModel.cs b/BTCPayServer/Models/AppViewModels/ViewPointOfSaleViewModel.cs
index 054309184..5ea82764a 100644
--- a/BTCPayServer/Models/AppViewModels/ViewPointOfSaleViewModel.cs
+++ b/BTCPayServer/Models/AppViewModels/ViewPointOfSaleViewModel.cs
@@ -49,6 +49,7 @@ namespace BTCPayServer.Models.AppViewModels
         public int[] CustomTipPercentages { get; set; }
 
         public string CustomCSSLink { get; set; }
+        public string CustomLogoLink { get; set; }
         public string Description { get; set; }
         public string EmbeddedCSS { get; set; }
     }
diff --git a/BTCPayServer/Services/Apps/AppType.cs b/BTCPayServer/Services/Apps/AppType.cs
index 350e8419c..15d14e4d9 100644
--- a/BTCPayServer/Services/Apps/AppType.cs
+++ b/BTCPayServer/Services/Apps/AppType.cs
@@ -9,6 +9,7 @@ namespace BTCPayServer.Services.Apps
     public enum PosViewType
     {
         Static,
-        Cart
+        Cart,
+        Light
     }
 }
diff --git a/BTCPayServer/Views/AppsPublic/PointOfSale/Light.cshtml b/BTCPayServer/Views/AppsPublic/PointOfSale/Light.cshtml
new file mode 100644
index 000000000..fef2e4329
--- /dev/null
+++ b/BTCPayServer/Views/AppsPublic/PointOfSale/Light.cshtml
@@ -0,0 +1,16 @@
+@model BTCPayServer.Models.AppViewModels.ViewPointOfSaleViewModel
+@{
+    Layout = "_LayoutPos";
+}
+
+@if (Context.Request.Query.ContainsKey("simple"))
+{
+    @await Html.PartialAsync("/Views/AppsPublic/PointOfSale/MinimalLight.cshtml", Model)
+}
+else
+{
+    <noscript>
+        @await Html.PartialAsync("/Views/AppsPublic/PointOfSale/MinimalLight.cshtml", Model)
+    </noscript>
+    @await Html.PartialAsync("/Views/AppsPublic/PointOfSale/VueLight.cshtml", Model)
+}
diff --git a/BTCPayServer/Views/AppsPublic/PointOfSale/MinimalLight.cshtml b/BTCPayServer/Views/AppsPublic/PointOfSale/MinimalLight.cshtml
new file mode 100644
index 000000000..20d067280
--- /dev/null
+++ b/BTCPayServer/Views/AppsPublic/PointOfSale/MinimalLight.cshtml
@@ -0,0 +1,26 @@
+<div class="container p-0 l-pos-wrapper">
+    <div class="l-pos-header bg-primary py-3 px-3">
+        @if (!string.IsNullOrEmpty(Model.CustomLogoLink)) {
+            <img src="@Model.CustomLogoLink" height="40">
+        } else {
+            <h1 class="mb-0">@Model.Title</h1>
+        }
+    </div>
+    <div class="py-5 px-3">
+        <form method="post" asp-controller="AppsPublic" asp-action="ViewPointOfSale" asp-route-appId="@Model.AppId" asp-antiforgery="false" data-buy>
+            <div class="input-group">
+                <div class="input-group-prepend">
+                    <span class="input-group-text">@Model.CurrencySymbol</span>
+                </div>
+                <input class="form-control" type="number" step="@Model.Step" name="amount" placeholder="Amount">
+                <div class="input-group-append">
+                    <button class="btn btn-primary" type="submit">Pay</button>
+                </div>
+            </div>
+        </form>
+
+        <div class="text-center mt-5 mb-3 py-2 bg-dark">
+            <svg class="logo" viewBox="0 0 192 84" xmlns="http://www.w3.org/2000/svg"><g><path d="M5.206 83.433a4.86 4.86 0 01-4.859-4.861V5.431a4.86 4.86 0 119.719 0v73.141a4.861 4.861 0 01-4.86 4.861" fill="#CEDC21" class="logo-brand-light"/><path d="M5.209 83.433a4.862 4.862 0 01-2.086-9.253L32.43 60.274 2.323 38.093a4.861 4.861 0 015.766-7.826l36.647 26.999a4.864 4.864 0 01-.799 8.306L7.289 82.964a4.866 4.866 0 01-2.08.469" fill="#51B13E" class="logo-brand-medium"/><path d="M5.211 54.684a4.86 4.86 0 01-2.887-8.774L32.43 23.73 3.123 9.821a4.861 4.861 0 014.166-8.784l36.648 17.394a4.86 4.86 0 01.799 8.305l-36.647 27a4.844 4.844 0 01-2.878.948" fill="#CEDC21" class="logo-brand-light"/><path d="M10.066 31.725v20.553L24.01 42.006z" fill="#1E7A44" class="logo-brand-dark"/><path d="M10.066 5.431A4.861 4.861 0 005.206.57 4.86 4.86 0 00.347 5.431v61.165h9.72V5.431h-.001z" fill="#CEDC21" class="logo-brand-light"/><path d="M74.355 41.412c3.114.884 4.84 3.704 4.84 7.238 0 5.513-3.368 8.082-7.955 8.082H60.761V27.271h9.259c4.504 0 7.997 2.146 7.997 7.743 0 2.821-1.179 5.43-3.662 6.398m-4.293-.716c3.324 0 6.018-1.179 6.018-5.724 0-4.586-2.776-5.808-6.145-5.808h-7.197v11.531h7.324v.001zm1.052 14.099c3.366 0 6.06-1.768 6.06-6.145 0-4.713-3.072-6.144-6.901-6.144h-7.534v12.288h8.375v.001zM98.893 27.271v1.81h-8.122v27.651h-1.979V29.081h-8.123v-1.81zM112.738 26.85c5.01 0 9.554 2.524 10.987 8.543h-1.895c-1.348-4.923-5.303-6.732-9.134-6.732-6.944 0-10.605 5.681-10.605 13.341 0 8.08 3.661 13.256 10.646 13.256 4.125 0 7.828-1.85 9.26-7.279h1.895c-1.264 6.271-6.229 9.174-11.154 9.174-7.87 0-12.583-5.808-12.583-15.15 0-8.966 4.969-15.153 12.583-15.153M138.709 27.271c5.091 0 8.795 3.326 8.795 9.764 0 6.06-3.704 9.722-8.795 9.722h-7.746v9.976h-1.935V27.271h9.681zm0 17.549c3.745 0 6.816-2.397 6.816-7.827 0-5.429-2.947-7.869-6.816-7.869h-7.746V44.82h7.746zM147.841 56.732v-.255l11.741-29.29h.885l11.615 29.29v.255h-2.062l-3.322-8.501H153.27l-3.324 8.501h-2.105zm12.164-26.052l-6.059 15.697h12.078l-6.019-15.697zM189.551 27.271h2.104v.293l-9.176 16.92v12.248h-2.02V44.484l-9.216-16.961v-.252h2.147l3.997 7.492 4.043 7.786h.04l4.081-7.786z" class="logo-brand-text"/></g></svg>
+        </div>
+    </div>
+</div>
diff --git a/BTCPayServer/Views/AppsPublic/PointOfSale/VueLight.cshtml b/BTCPayServer/Views/AppsPublic/PointOfSale/VueLight.cshtml
new file mode 100644
index 000000000..a86fee7b3
--- /dev/null
+++ b/BTCPayServer/Views/AppsPublic/PointOfSale/VueLight.cshtml
@@ -0,0 +1,40 @@
+@model BTCPayServer.Models.AppViewModels.ViewPointOfSaleViewModel
+<div id="app" class="l-pos-wrapper" v-cloak>
+    <form method="post" asp-controller="AppsPublic" asp-action="ViewPointOfSale" asp-route-appId="@Model.AppId" asp-antiforgery="false" data-buy>
+        <div class="l-pos-header bg-primary py-3 px-3">
+            @if (!string.IsNullOrEmpty(Model.CustomLogoLink))
+            {
+                
+                <img src="@Model.CustomLogoLink" height="40"/>
+            }
+            else
+            {
+                <h1 class="mb-0">@Model.Title</h1>
+            }
+        </div>
+        
+        <div ref="display"  class="l-pos-display pt-5 pb-3 px-3"><div class="text-muted">{{srvModel.currencyCode}}</div><span ref="amount"  v-bind:style="{fontSize: fontSize + 'px'}">{{ payTotal }}</span></div>
+        <div class="l-pos-keypad">
+            <template
+                v-for="(key, index) in keys"
+                :key="index">
+                <div v-if="key !== ''" class="btn" 
+                     v-bind:class="{ 'btn-primary' : (isNaN(key) === false) || key === '.', 'btn-dark' : isNaN(key) && key !== '.' }" 
+                     v-on:click="buttonClicked(key)">{{ key }}</div>
+                <div v-else class="btn btn-empty"></div>
+            </template>
+        </div>
+        
+        <div class="l-pos-controls mt-2">
+            <div class="btn btn-outline-secondary btn-lg mb-0" v-on:click="clearTotal">Clear</div><button class="btn btn-primary btn-lg mb-0" type="submit"><b>Pay</b></button>
+        </div>
+
+        <input class="form-control" type="hidden" name="amount" v-model="payTotalNumeric">
+    </form>
+
+    <div class="text-center mt-4 mb-3 py-2 bg-dark">
+        <svg class="logo" viewBox="0 0 192 84" xmlns="http://www.w3.org/2000/svg"><g><path d="M5.206 83.433a4.86 4.86 0 01-4.859-4.861V5.431a4.86 4.86 0 119.719 0v73.141a4.861 4.861 0 01-4.86 4.861" fill="#CEDC21" class="logo-brand-light"/><path d="M5.209 83.433a4.862 4.862 0 01-2.086-9.253L32.43 60.274 2.323 38.093a4.861 4.861 0 015.766-7.826l36.647 26.999a4.864 4.864 0 01-.799 8.306L7.289 82.964a4.866 4.866 0 01-2.08.469" fill="#51B13E" class="logo-brand-medium"/><path d="M5.211 54.684a4.86 4.86 0 01-2.887-8.774L32.43 23.73 3.123 9.821a4.861 4.861 0 014.166-8.784l36.648 17.394a4.86 4.86 0 01.799 8.305l-36.647 27a4.844 4.844 0 01-2.878.948" fill="#CEDC21" class="logo-brand-light"/><path d="M10.066 31.725v20.553L24.01 42.006z" fill="#1E7A44" class="logo-brand-dark"/><path d="M10.066 5.431A4.861 4.861 0 005.206.57 4.86 4.86 0 00.347 5.431v61.165h9.72V5.431h-.001z" fill="#CEDC21" class="logo-brand-light"/><path d="M74.355 41.412c3.114.884 4.84 3.704 4.84 7.238 0 5.513-3.368 8.082-7.955 8.082H60.761V27.271h9.259c4.504 0 7.997 2.146 7.997 7.743 0 2.821-1.179 5.43-3.662 6.398m-4.293-.716c3.324 0 6.018-1.179 6.018-5.724 0-4.586-2.776-5.808-6.145-5.808h-7.197v11.531h7.324v.001zm1.052 14.099c3.366 0 6.06-1.768 6.06-6.145 0-4.713-3.072-6.144-6.901-6.144h-7.534v12.288h8.375v.001zM98.893 27.271v1.81h-8.122v27.651h-1.979V29.081h-8.123v-1.81zM112.738 26.85c5.01 0 9.554 2.524 10.987 8.543h-1.895c-1.348-4.923-5.303-6.732-9.134-6.732-6.944 0-10.605 5.681-10.605 13.341 0 8.08 3.661 13.256 10.646 13.256 4.125 0 7.828-1.85 9.26-7.279h1.895c-1.264 6.271-6.229 9.174-11.154 9.174-7.87 0-12.583-5.808-12.583-15.15 0-8.966 4.969-15.153 12.583-15.153M138.709 27.271c5.091 0 8.795 3.326 8.795 9.764 0 6.06-3.704 9.722-8.795 9.722h-7.746v9.976h-1.935V27.271h9.681zm0 17.549c3.745 0 6.816-2.397 6.816-7.827 0-5.429-2.947-7.869-6.816-7.869h-7.746V44.82h7.746zM147.841 56.732v-.255l11.741-29.29h.885l11.615 29.29v.255h-2.062l-3.322-8.501H153.27l-3.324 8.501h-2.105zm12.164-26.052l-6.059 15.697h12.078l-6.019-15.697zM189.551 27.271h2.104v.293l-9.176 16.92v12.248h-2.02V44.484l-9.216-16.961v-.252h2.147l3.997 7.492 4.043 7.786h.04l4.081-7.786z" class="logo-brand-text"/></g></svg>
+    </div>
+</div>
+
+
diff --git a/BTCPayServer/Views/Shared/_LayoutPos.cshtml b/BTCPayServer/Views/Shared/_LayoutPos.cshtml
index f5f7fed02..1bffa01ef 100644
--- a/BTCPayServer/Views/Shared/_LayoutPos.cshtml
+++ b/BTCPayServer/Views/Shared/_LayoutPos.cshtml
@@ -36,6 +36,14 @@
         </script>
         <bundle name="wwwroot/bundles/cart-bundle.min.js" asp-append-version="true" />
     }
+    @if (Model.ViewType == PosViewType.Light)
+    {
+        <bundle name="wwwroot/bundles/light-pos-bundle.min.css" asp-append-version="true" />
+        <script type="text/javascript">
+            var srvModel = @Safe.Json(Model);
+        </script>
+        <bundle name="wwwroot/bundles/light-pos-bundle.min.js" asp-append-version="true" />
+    }
     <style>
         .card-deck {
             display: grid;
diff --git a/BTCPayServer/bundleconfig.json b/BTCPayServer/bundleconfig.json
index b16ddc4bc..2e9ffeabb 100644
--- a/BTCPayServer/bundleconfig.json
+++ b/BTCPayServer/bundleconfig.json
@@ -140,6 +140,19 @@
             "wwwroot/crowdfund/**/*.css"
         ]
     },
+    {
+        "outputFileName": "wwwroot/bundles/light-pos-bundle.min.js",
+        "inputFiles": [
+            "wwwroot/vendor/vuejs/vue.min.js",
+            "wwwroot/light-pos/**/*.js"
+        ]
+    },
+    {
+        "outputFileName": "wwwroot/bundles/light-pos-bundle.min.css",
+        "inputFiles": [
+            "wwwroot/light-pos/**/*.css"
+        ]
+    },
     {
         "outputFileName": "wwwroot/bundles/payment-request-admin-bundle.min.js",
         "inputFiles": [
diff --git a/BTCPayServer/wwwroot/light-pos/app.js b/BTCPayServer/wwwroot/light-pos/app.js
new file mode 100644
index 000000000..e2c18a90e
--- /dev/null
+++ b/BTCPayServer/wwwroot/light-pos/app.js
@@ -0,0 +1,99 @@
+var app = null;
+
+function addLoadEvent(func) {
+    var oldonload = window.onload;
+    if (typeof window.onload != 'function') {
+        window.onload = func;
+    } else {
+        window.onload = function() {
+            if (oldonload) {
+                oldonload();
+            }
+            func();
+        }
+    }
+}
+addLoadEvent(function (ev) {
+    app = new Vue({
+        el: '#app',
+        data: function(){
+            var displayFontSize = 80;
+
+            return {
+                srvModel: window.srvModel,
+                payTotal: '0',
+                payTotalNumeric: 0,
+                fontSize: displayFontSize,
+                defaultFontSize: displayFontSize,
+                keys: ['1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '0', 'C']
+            }
+        },
+        computed: {
+            Currency: function(){
+                return this.srvModel.Currency.toUpperCase();
+            },
+        },
+        watch: {
+            payTotal: function() {
+                // This must be timeouted because the updated width is not available yet
+                this.$nextTick(function(){
+                    var displayWidth = this.getWidth(this.$refs.display),
+                        amountWidth = this.getWidth(this.$refs.amount),
+                        gamma = displayWidth / amountWidth || 0,
+                        isAmountWider = displayWidth < amountWidth;
+
+                    if (isAmountWider) {
+                        // Font size will get smaller
+                        this.fontSize = Math.floor(this.fontSize * gamma);
+                    } else if (!isAmountWider && this.fontSize < this.defaultFontSize) {
+                        // Font size will get larger up to the max size
+                        this.fontSize = Math.min(this.fontSize * gamma, this.defaultFontSize);
+                    }
+                });
+            }
+        },
+        methods: {
+            getWidth: function(el) {
+                var styles = window.getComputedStyle(el),
+                    width = parseFloat(el.clientWidth),
+                    padL = parseFloat(styles.paddingLeft),
+                    padR = parseFloat(styles.paddingRight);
+
+                return width - padL - padR;
+            },
+            clearTotal: function() {
+                this.payTotal = '0';
+                this.payTotalNumeric = 0;
+            },
+            buttonClicked: function(key) {
+                var payTotal = this.payTotal;
+
+                if (key === 'C') {
+                    payTotal = payTotal.substring(0, payTotal.length - 1);
+                    payTotal = payTotal === '' ? '0' : payTotal;
+                } else if (key === '.') {
+                    // Only add decimal point if it doesn't exist yet
+                    if (payTotal.indexOf('.') === -1) {
+                        payTotal += key;
+                    }
+                } else { // Is a digit
+                    if (payTotal === '0') {
+                        payTotal = '';
+                    }
+                    payTotal += key;
+
+                    var divsibility = this.srvModel.currencyInfo.divisibility;
+                    var decimalIndex = payTotal.indexOf('.')
+                    if (decimalIndex !== -1 && (payTotal.length - decimalIndex-1  > divsibility)) {
+                        payTotal = payTotal.replace(".", "");
+                        payTotal = payTotal.substr(0, payTotal.length - divsibility) + "." + payTotal.substr(payTotal.length - divsibility);
+                    }
+                }
+
+                this.payTotal = payTotal;
+                this.payTotalNumeric = parseFloat(payTotal);
+            }
+        }
+    });
+});
+
diff --git a/BTCPayServer/wwwroot/light-pos/styles/main.css b/BTCPayServer/wwwroot/light-pos/styles/main.css
new file mode 100644
index 000000000..fbc6501ee
--- /dev/null
+++ b/BTCPayServer/wwwroot/light-pos/styles/main.css
@@ -0,0 +1,54 @@
+[v-cloak] > * {
+    display: none
+}
+
+[v-cloak]::before {
+    content: "loading…"
+}
+
+.l-pos-wrapper {
+    max-width: 450px;
+    margin: auto;
+}
+
+.l-pos-header {
+    color: #fff;
+}
+
+.l-pos-display {
+    font-size: 1.4rem;
+    overflow: hidden;
+}
+.l-pos-display span {
+    display: inline-block;
+    height: 80px;
+    line-height: 80px;
+}
+
+.l-pos-keypad {
+    margin-left: 2%;
+}
+
+.l-pos-keypad .btn {
+    width: 32%;
+    margin-right: 1%;
+    margin-bottom: 1%;
+    border-radius: 0;
+    padding-top: 4%;
+    padding-bottom: 4%;
+    font-weight: bold;
+    font-size: 1.3rem;
+}
+
+.l-pos-controls .btn {
+    width: 47%;
+    border-radius: 0;
+    margin-right: 0%;
+    margin-left: 2%;
+    margin-bottom: 1%;
+}
+
+.logo {
+    height: 40px;
+    filter: contrast(0) brightness(200%);
+}
\ No newline at end of file