@model WalletSendModel

<div id="coin-selection-app" v-cloak>
    <ul class="list-group">
        <li class="list-group-item list-group-item-heading d-flex justify-content-between align-items-center">
            <h3>Coin selection</h3>
            <span class="text-muted text-right" >
                <span>{{selectedItems.length}} selected</span>
                <span v-show="selectedItems.length > 0" >&nbsp({{selectedAmount}} @Model.CryptoCode) </span><br/>
                <span>{{items.length}} total UTXOs (@Model.CurrentBalance @Model.CryptoCode)</span>
            </span>
        </li>
        <li class="list-group-item">
            <div class="input-group">
                <input type="text" v-model="filter" class="form-control" placeholder="Filter by transaction id, amount, label, comment.."/>
                <div class="input-group-append" v-show="filter">
                    <button type="button" class="btn btn-primary" title="Clear" v-on:click="filter=''">
                        <span class=" fa fa-times"></span>
                    </button>
                </div>
            </div>
        </li>
        <li class="list-group-item d-flex justify-content-between align-items-center cursor-pointer"
            v-for="item of filteredItems"
            :key="item.outpoint"
            v-bind:class="{ 'list-group-item-secondary': item.selected }"
            v-on:click="toggleItem($event, item, !item.selected)">
            <a v-on:click="toggleItem($event, item, !item.selected)" class="text-truncate flex-1" v-tooltip="item.outpoint" v-bind:href="item.link" target="_blank">{{item.outpoint}}</a>
            <div :id="item.outpoint" class="d-flex justify-content-between align-items-center">
                <div>
                    <span v-if="item.comment" data-toggle="tooltip" v-tooltip="item.comment" class="badge badge-info badge-pill" style="font-style: italic">i</span>
                    <span
                          v-if="item.labels"
                          class="badge badge-primary badge-pill ml-2"
                          v-for="label of item.labels"
                          v-bind:style="{ 'background-color': label.color}"
                          key="label.value">
                        {{label.value}}
                    </span>
                </div>
                <span class="text-muted ml-2">{{item.amount}}</span>
            </div>
        </li>
        <li class="list-group-item">
            <ul class="pagination float-left">
                <li class="page-item" v-bind:class="{'disabled' : pageStart == 0}">
                    <a class="page-link" tabindex="-1" href="#" v-on:click="page = page -1">«</a>
                </li>
                <li class="page-item disabled">
                    <span class="page-link">
                        Showing {{pageStart+1}}-{{pageEnd}} of {{currentItems.length}}
                    </span>
                </li>
                <li class="page-item" v-bind:class="{'disabled' : pageEnd>= currentItems.length}">
                    <a class="page-link" href="#" v-on:click="page = page +1">»</a>
                </li>
            </ul>

            <a href="#" v-on:click="showSelectedOnly = !showSelectedOnly" class="btn btn-link" v-bind:class="{'disabled' : selectedInputs.length === 0}">
                <template v-if="showSelectedOnly">Show all</template>
                <template v-else>Show selected only</template>
            </a>
        </li>
    </ul>
</div>

<script src="~/bundles/wallet-coin-selection-bundle.min.js" type="text/javascript"></script>
<script>
$(function() {

    Vue.directive('tooltip', function(el, binding) {
        $(el).tooltip({
            title: binding.value,
            placement: binding.arg || "auto",
            trigger: 'hover'
        });
    });

    function roundNumber(number, decimals) {
        var newnumber = new Number(number + '').toFixed(parseInt(decimals));
        return parseFloat(newnumber);
    }

    new Vue({
        el: '#coin-selection-app',
        data: {
            filter: "",
            items: @Safe.Json(Model.InputsAvailable),
            selectedInputs: $("#SelectedInputs").val(),
            page: 0,
            pageSize: 10,
            showSelectedOnly: false
        },
        watch: {
            filter: function() {
                this.page = 0;
                this.handle();
            },
            showSelectedOnly: function() {
                this.handle();
            },
            selectedInputs: function() {
                this.handle();
            }
        },
        computed: {
            currentItems: function() {
                return this.showSelectedOnly ? this.selectedItems : this.items;
            },
            pageStart: function() {
                return this.page == 0 ? 0 : this.page * this.pageSize;
            },
            pageEnd: function() {
                var result = this.pageStart + this.pageSize;
                if (result > this.currentItems.length) {
                    result = this.currentItems.length;
                }
                return result;
            },
            filteredItems: function() {
                var result = [];
                if (!this.filter) {
                    var self = this;
                    result = this.currentItems.map(function(currentItem) {
                        return {...currentItem, selected: self.selectedInputs.indexOf(currentItem.outpoint) != -1
                        }
                    });
                } else {
                    var f = this.filter.toLowerCase();
                    for (var i = 0; i < this.currentItems.length; i++) {
                        var currentItem = this.currentItems[i];
                        if (currentItem.outpoint.indexOf(f) != -1 ||
                            currentItem.amount.toString().indexOf(f) != -1 ||
                            (currentItem.comment && currentItem.comment.toLowerCase().indexOf(f) != -1) ||
                            (currentItem.labels && currentItem.labels.filter(function(l) {
                                return l.value.toLowerCase().indexOf(f) != -1
                            }).length > 0)) {
                            result.push({...currentItem, selected: this.selectedInputs.indexOf(currentItem.outpoint) != -1
                            });
                        }
                    }
                }
                return result.slice(this.pageStart, this.pageEnd);
            },
            selectedItems: function() {
                var result = [];
                for (var i = 0; i < this.items.length; i++) {
                    var currentItem = this.items[i];

                    if (this.selectedInputs.indexOf(currentItem.outpoint) != -1) {
                        result.push(currentItem);
                    }
                }
                return result;
            },
            selectedAmount: function() {
                var result = 0;
                for (let i = 0; i < this.selectedItems.length; i++) {
                    result += this.selectedItems[i].amount;
                }
                return roundNumber(result, 12);
            }
        },
        mounted: function() {
            var self = this;
            self.selectedInputs = $("#SelectedInputs").val();
            $(".crypto-balance-link").text(this.selectedAmount);
            $("#SelectedInputs").on("input change", function() {
                self.selectedInputs = $("#SelectedInputs").val();
            });
        },
        methods: {
            handle: function() {
                if (this.selectedInputs.length == 0) {
                    this.showSelectedOnly = false;
                }
                if (this.currentItems.length < this.pageEnd) {
                    this.page = 0;
                }
            },
            toggleItem: function(evt, item, toggle) {
                if (evt.target.tagName == "A") {
                    return;
                }
                var res = $("#SelectedInputs").val();
                if (toggle) {
                    res.push(item.outpoint);

                } else {
                    res.splice(this.selectedInputs.indexOf(item.outpoint), 1);
                }

                $("select option").each(function() {
                    var selected = res.indexOf($(this).attr("value")) !== -1;
                    $(this).attr("selected", selected ? "selected" : null);
                });

                this.selectedInputs = res;
                $(".crypto-balance-link").text(this.selectedAmount);
            }
        }
    });
});
</script>