@extends('layouts.admin')

@section('title', 'Charging Point Update Requests - EV Charging Network')

@section('breadcrumb_title', 'Update Requests')
@section('breadcrumb_sub_title', '')
@section('page_title', 'All Update Requests')

@section('content')
    <div class="min-h-screen bg-gray-50">
        <div class="row mt-4">
            <div class="col-12">
                <div class="card">
                    <!-- Card header -->
                    <div class="card-header">
                        <h5 class="mb-0">Charging Point Update Requests</h5>
                        <p class="text-sm mb-0">
                            Manage all charging point update requests.
                        </p>
                    </div>

                    <!-- Filters Section -->
                    <div class="card-body border-bottom">
                        <div class="row">
                            <div class="col-md-3">
                                <div class="form-group">
                                    <label for="network_filter" class="form-label">Network</label>
                                    <select class="form-control" id="network_filter">
                                        <option value="">All Networks</option>
                                    </select>
                                </div>
                            </div>
                            <div class="col-md-3">
                                <div class="form-group">
                                    <label for="power_output_filter" class="form-label">Power Output</label>
                                    <select class="form-control" id="power_output_filter">
                                        <option value="">All Power Outputs</option>
                                    </select>
                                </div>
                            </div>
                            <div class="col-md-3">
                                <div class="form-group">
                                    <label for="charger_status_filter" class="form-label">Charger Status</label>
                                    <select class="form-control" id="charger_status_filter">
                                        <option value="">All Statuses</option>
                                        <option value="0">Down</option>
                                        <option value="1">Working</option>
                                        <option value="2">Limited</option>
                                        <option value="4">Unknown</option>
                                    </select>
                                </div>
                            </div>

                            <div class="col-md-3">
                                <div class="form-group">
                                    <label for="status_filter" class="form-label">Status</label>
                                    <select class="form-control" id="status_filter">
                                        <option value="">All Statuses</option>
                                        <option value="1">Verified</option>
                                        <option value="3">Rejected</option>
                                    </select>
                                </div>
                            </div>
                        </div>

                        <div class="row text-end">
                            <div class="col-md-12">
                                <div class="form-group">
                                    <button type="button" class="btn btn-primary mt-4" id="applyFilters">Apply
                                        Filters</button>
                                    <button type="button" class="btn btn-secondary mt-4" id="clearFilters">Clear
                                        Filters</button>
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class="table-responsive">
                        <table class="table table-flush" id="datatable-search">
                            <thead class="thead-light">
                                <tr>
                                    <th>#</th>
                                    <th>Charging Point</th>
                                    <th>Client</th>
                                    <th>Charger Status</th>
                                    <th>Status</th>
                                    <th>Created At</th>
                                    <th>Actions</th>
                                </tr>
                            </thead>
                            <tbody id="update-requests-table-body">
                                <!-- Data will be loaded here via JavaScript -->
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <style>
        /* Ensure proper spacing for DataTable pagination */
        .dataTable-wrapper .dataTable-container {
            overflow-x: auto;
        }

        .dataTable-wrapper .dataTable-bottom {
            padding: 15px 15px;
            margin-top: 0px;
        }

        .dataTable-wrapper .dataTable-pagination {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        /* Prevent table content from overlapping with pagination */
        #datatable-search {
            margin-bottom: 0;
        }

        .table-responsive {
            margin-bottom: 0;
            overflow: visible;
        }
    </style>

@endsection


@section('scripts')
    <!-- DataTables Script -->
    <script src="{{ asset('js/plugins/datatables.js') }}"></script>
    <script>
        $(document).ready(function() {
            let dataTable;
            let currentFilters = {};
            let currentUpdateRequestId = null;

            // Load initial data
            loadUpdateRequests();
            loadFilterOptions();

            // Filter functionality
            $('#applyFilters').on('click', function() {
                currentFilters = {};

                const networkId = $('#network_filter').val();
                const powerOutputId = $('#power_output_filter').val();
                const chargerStatus = $('#charger_status_filter').val();
                const status = $('#status_filter').val();
                // Only add filters if they have values
                if (networkId && networkId !== '') {
                    currentFilters.network_id = networkId;
                }

                if (powerOutputId && powerOutputId !== '') {
                    currentFilters.power_output_id = powerOutputId;
                }

                if (chargerStatus && chargerStatus !== '') {
                    currentFilters.charger_status = chargerStatus;
                }

                if (status && status !== '') {
                    currentFilters.status = status;
                }

                loadUpdateRequests();
            });

            $('#clearFilters').on('click', function() {
                $('#network_filter').val('').trigger('change');
                $('#power_output_filter').val('').trigger('change');
                $('#charger_status_filter').val('').trigger('change');
                $('#status_filter').val('').trigger('change');
                currentFilters = {};
                if (dataTable) {
                    dataTable.search('');
                }
                loadUpdateRequests();
            });

            function loadUpdateRequests() {
                console.log('Loading update requests with filters:', currentFilters);
                $.get('{{ route('charging-point-update-requests.get-approved-list') }}', currentFilters)
                    .done(function(response) {
                        console.log(response);
                        if (response.success) {
                            // Destroy existing DataTable if it exists
                            if (dataTable) {
                                dataTable.destroy();
                                dataTable = null;
                            }

                            displayUpdateRequests(response.data);

                            // Initialize DataTable with new data
                            initializeDataTable();
                        } else {
                            showError('Failed to load update requests');
                        }
                    })
                    .fail(function() {
                        showError('Error loading update requests');
                    });
            };

            function displayUpdateRequests(updateRequests) {
                const tbody = $('#update-requests-table-body');
                tbody.empty();

                console.log('Displaying update requests:', updateRequests.length, 'items');

                if (updateRequests.length === 0) {
                    tbody.html(`
                    <tr>
                        <td colspan="10" class="text-center text-muted py-4">
                            <i class="fas fa-edit fa-2x mb-2"></i>
                            <br>
                            No update requests found.
                        </td>
                    </tr>
                `);
                    return;
                }

                updateRequests.forEach((updateRequest, index) => {
                    const row = `
                    <tr>
                        <td class="text-sm font-weight-normal" style="padding: 0.75rem 1.5rem;">${index + 1}</td>
                        <td class="text-sm font-weight-normal" style="padding: 0.75rem 1.5rem;">
                            ${updateRequest.charging_point ? 
                                (updateRequest.charging_point.name.length > 25 ? 
                                    updateRequest.charging_point.name.substring(0, 25) + '...' : 
                                    updateRequest.charging_point.name) : 
                                'N/A'}
                        </td>
                        <td class="text-sm font-weight-normal" style="padding: 0.75rem 1.5rem;">
                            ${updateRequest.client && updateRequest.client ? 
                                updateRequest.client.first_name + ' ' + updateRequest.client.last_name || 'N/A' : 'N/A'}
                        </td>
                        <td class="text-sm font-weight-normal" style="padding: 0.75rem 1.5rem;">
                            ${getChargerStatusDisplay(updateRequest.charger_status)}
                        </td>
                        <td class="text-sm font-weight-normal" style="padding: 0.75rem 1.5rem;">
                            ${getStatusDisplay(updateRequest.status)}
                        </td>
                        <td class="text-sm font-weight-normal" style="padding: 0.75rem 1.5rem;" data-order="${new Date(updateRequest.created_at).getTime()}">
                            <span style="display:none;">${new Date(updateRequest.created_at).getTime()}</span>
                            ${new Date(updateRequest.created_at).toLocaleDateString()}
                        </td>
                        <td class="text-sm font-weight-normal">
                            <div class="d-flex align-items-center">
                                <i class="fas fa-eye text-info me-3" style="cursor: pointer; font-size: 16px;" 
                                   title="View" onclick="viewUpdateRequest('${updateRequest.ref_no}')"></i>
                            </div>
                        </td>
                    </tr>
                `;
                    tbody.append(row);
                });
            }

            function initializeDataTable() {
                // Initialize DataTable only once
                dataTable = new simpleDatatables.DataTable("#datatable-search", {
                    searchable: true,
                    fixedHeight: true,
                    columns: [{
                            select: 5,
                            sort: "desc"
                        },
                        {
                            select: 6,
                            sortable: false
                        }
                    ]
                });
            }

            function loadFilterOptions() {
                // Load networks
                $.get('{{ route('networks.list') }}')
                    .done(function(response) {
                        if (response.success) {
                            const networkSelect = $('#network_filter');
                            response.data.forEach(network => {
                                networkSelect.append(
                                    `<option value="${network.id}">${network.name}</option>`);
                            });
                        }
                    })
                    .fail(function() {
                        console.log('Failed to load networks');
                    });

                // Load power outputs
                $.get('{{ route('power-outputs.list') }}')
                    .done(function(response) {
                        if (response.success) {
                            const powerOutputSelect = $('#power_output_filter');
                            response.data.forEach(powerOutput => {
                                powerOutputSelect.append(
                                    `<option value="${powerOutput.id}">${powerOutput.name}</option>`
                                );
                            });
                        }
                    })
                    .fail(function() {
                        console.log('Failed to load power outputs');
                    });
            }

            function getStatusDisplay(status) {
                if (status === null || status === undefined) {
                    return 'N/A';
                }

                const statusMap = {
                    0: {
                        label: 'Under Review',
                        class: 'badge-warning'
                    },
                    1: {
                        label: 'Verified',
                        class: 'badge-success'
                    },
                    2: {
                        label: 'Merged',
                        class: 'badge-info'
                    },
                    3: {
                        label: 'Rejected',
                        class: 'badge-danger'
                    }
                };

                const statusInfo = statusMap[status];
                if (statusInfo) {
                    return `<span class="badge ${statusInfo.class}">${statusInfo.label}</span>`;
                }

                return 'N/A';
            }

            function getChargerStatusDisplay(status) {
                if (status === null || status === undefined) return 'N/A';

                const statusMap = {
                    0: {
                        label: 'Down',
                        class: 'badge-danger'
                    },
                    1: {
                        label: 'Working',
                        class: 'badge-success'
                    },
                    2: {
                        label: 'Limited',
                        class: 'badge-warning'
                    },
                    4: {
                        label: 'Unknown',
                        class: 'badge-secondary'
                    }
                };

                const statusInfo = statusMap[status];
                if (statusInfo) {
                    return `<span class="badge ${statusInfo.class}">${statusInfo.label}</span>`;
                }

                return 'Unknown';
            }

            function showError(message) {
                $('#update-requests-table-body').html(`
                <tr>
                    <td colspan="10" class="text-center text-danger py-4">
                        <i class="fas fa-exclamation-triangle fa-2x mb-2"></i>
                        <br>
                        ${message}
                    </td>
                </tr>
            `);
            }

            // Global functions
            window.setCurrentUpdateRequest = function(id) {
                currentUpdateRequestId = id;
            };

            window.viewUpdateRequest = function(id) {
                const url = '{{ route('charging-point-update-requests.show', ':id') }}'.replace(':id', id);
                window.location.href = url;
            };

            window.viewOnlyUpdateRequest = function(refNo) {
                const url = '{{ route('charging-point-update-requests.view-only', ':refNo') }}'.replace(
                    ':refNo', refNo);
                window.location.href = url;
            };
        });
    </script>
@endsection