{% extends "base.html" %}
{% load static %}

{% block title %}Encounters - EMR{% endblock %}

{% block css %}
<link href="{% static 'assets/plugins/datatables.net-bs5/css/dataTables.bootstrap5.min.css' %}" rel="stylesheet" />
<link href="{% static 'assets/plugins/datatables.net-responsive-bs5/css/responsive.bootstrap5.min.css' %}" rel="stylesheet" />
<link href="{% static 'assets/plugins/select2/dist/css/select2.min.css' %}" rel="stylesheet" />
<link href="{% static 'assets/plugins/bootstrap-datepicker/dist/css/bootstrap-datepicker.min.css' %}" rel="stylesheet" />
{% endblock %}

{% block content %}
<!-- BEGIN breadcrumb -->
<ol class="breadcrumb float-xl-end">
    <li class="breadcrumb-item"><a href="{% url 'core:dashboard' %}">Dashboard</a></li>
    <li class="breadcrumb-item"><a href="{% url 'emr:dashboard' %}">EMR</a></li>
    <li class="breadcrumb-item active">Encounters</li>
</ol>
<!-- END breadcrumb -->

<!-- BEGIN page-header -->
<h1 class="page-header">
    Patient Encounters
    <small>Electronic Medical Records</small>
</h1>
<!-- END page-header -->

<!-- BEGIN panel -->
<div class="panel panel-inverse">
    <div class="panel-heading">
        <h4 class="panel-title">Encounter Management</h4>
        <div class="panel-heading-btn">
            <a href="{% url 'emr:encounter_create' %}" class="btn btn-xs btn-success me-2">
                <i class="fa fa-plus"></i> New Encounter
            </a>
            <a href="javascript:;" class="btn btn-xs btn-icon btn-default" data-toggle="panel-expand"><i class="fa fa-expand"></i></a>
            <a href="javascript:;" class="btn btn-xs btn-icon btn-default" data-toggle="panel-reload"><i class="fa fa-redo"></i></a>
            <a href="javascript:;" class="btn btn-xs btn-icon btn-default" data-toggle="panel-collapse"><i class="fa fa-minus"></i></a>
        </div>
    </div>
    <div class="panel-body">
        <!-- Filters and Search -->
        <div class="row mb-3">
            <div class="col-md-3">
                <label class="form-label">Search</label>
                <div class="input-group">
                    <input type="text" class="form-control" id="search-input" placeholder="Patient name, MRN, or provider...">
                    <button class="btn btn-outline-secondary" type="button" id="search-btn">
                        <i class="fa fa-search"></i>
                    </button>
                </div>
            </div>
            <div class="col-md-2">
                <label class="form-label">Status</label>
                <select class="form-select" id="status-filter">
                    <option value="">All Statuses</option>
                    <option value="PLANNED">Planned</option>
                    <option value="ARRIVED">Arrived</option>
                    <option value="TRIAGED">Triaged</option>
                    <option value="IN_PROGRESS">In Progress</option>
                    <option value="ON_HOLD">On Hold</option>
                    <option value="FINISHED">Finished</option>
                    <option value="CANCELLED">Cancelled</option>
                </select>
            </div>
            <div class="col-md-2">
                <label class="form-label">Type</label>
                <select class="form-select" id="type-filter">
                    <option value="">All Types</option>
                    <option value="INPATIENT">Inpatient</option>
                    <option value="OUTPATIENT">Outpatient</option>
                    <option value="EMERGENCY">Emergency</option>
                    <option value="URGENT_CARE">Urgent Care</option>
                    <option value="TELEMEDICINE">Telemedicine</option>
                    <option value="CONSULTATION">Consultation</option>
                </select>
            </div>
            <div class="col-md-2">
                <label class="form-label">Date Range</label>
                <select class="form-select" id="date-filter">
                    <option value="">All Dates</option>
                    <option value="today">Today</option>
                    <option value="yesterday">Yesterday</option>
                    <option value="this_week">This Week</option>
                    <option value="last_week">Last Week</option>
                    <option value="this_month">This Month</option>
                    <option value="custom">Custom Range</option>
                </select>
            </div>
            <div class="col-md-3">
                <label class="form-label">Provider</label>
                <select class="form-select select2" id="provider-filter">
                    <option value="">All Providers</option>
                    <!-- Options will be loaded dynamically -->
                </select>
            </div>
        </div>

        <!-- Custom Date Range (hidden by default) -->
        <div class="row mb-3" id="custom-date-range" style="display: none;">
            <div class="col-md-3">
                <label class="form-label">Start Date</label>
                <input type="date" class="form-control" id="start-date">
            </div>
            <div class="col-md-3">
                <label class="form-label">End Date</label>
                <input type="date" class="form-control" id="end-date">
            </div>
            <div class="col-md-2">
                <label class="form-label">&nbsp;</label>
                <button class="btn btn-primary d-block" id="apply-date-filter">Apply</button>
            </div>
        </div>

        <!-- Action Buttons -->
        <div class="d-flex justify-content-between align-items-center mb-3">
            <div class="btn-group">
                <button type="button" class="btn btn-outline-secondary" id="bulk-actions-btn" disabled>
                    <i class="fa fa-tasks me-2"></i>Bulk Actions
                </button>
                <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" 
                        data-bs-toggle="dropdown" id="bulk-dropdown" disabled>
                    <span class="visually-hidden">Toggle Dropdown</span>
                </button>
                <ul class="dropdown-menu">
                    <li><a class="dropdown-item" href="#" onclick="bulkUpdateStatus('FINISHED')">
                        <i class="fa fa-check me-2"></i>Mark as Finished
                    </a></li>
                    <li><a class="dropdown-item" href="#" onclick="bulkUpdateStatus('CANCELLED')">
                        <i class="fa fa-times me-2"></i>Cancel Selected
                    </a></li>
                    <li><hr class="dropdown-divider"></li>
                    <li><a class="dropdown-item" href="#" onclick="bulkExport()">
                        <i class="fa fa-download me-2"></i>Export Selected
                    </a></li>
                </ul>
            </div>
            
            <div class="btn-group">
                <button type="button" class="btn btn-outline-secondary" onclick="refreshTable()">
                    <i class="fa fa-refresh me-2"></i>Refresh
                </button>
                <button type="button" class="btn btn-outline-secondary dropdown-toggle" data-bs-toggle="dropdown">
                    <i class="fa fa-download me-2"></i>Export
                </button>
                <ul class="dropdown-menu">
                    <li><a class="dropdown-item" href="#" onclick="exportData('csv')">
                        <i class="fa fa-file-csv me-2"></i>Export as CSV
                    </a></li>
                    <li><a class="dropdown-item" href="#" onclick="exportData('excel')">
                        <i class="fa fa-file-excel me-2"></i>Export as Excel
                    </a></li>
                    <li><a class="dropdown-item" href="#" onclick="exportData('pdf')">
                        <i class="fa fa-file-pdf me-2"></i>Export as PDF
                    </a></li>
                </ul>
            </div>
        </div>

        <!-- Encounters Table -->
        <div class="table-responsive">
            <table id="encounters-table" class="table table-striped table-bordered align-middle">
                <thead>
                    <tr>
                        <th width="30">
                            <div class="form-check">
                                <input class="form-check-input" type="checkbox" id="select-all">
                            </div>
                        </th>
                        <th>Patient</th>
                        <th>Provider</th>
                        <th>Type</th>
                        <th>Status</th>
                        <th>Start Date/Time</th>
                        <th>Duration</th>
                        <th>Location</th>
                        <th>Priority</th>
                        <th>Documentation</th>
                        <th width="120">Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <!-- Data will be loaded via AJAX -->
                </tbody>
            </table>
        </div>
    </div>
</div>
<!-- END panel -->

<!-- Quick View Modal -->
<div class="modal fade" id="encounterQuickViewModal" tabindex="-1">
    <div class="modal-dialog modal-lg">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Encounter Quick View</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body" id="encounter-quick-view-content">
                <!-- Content will be loaded dynamically -->
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
                <a href="#" class="btn btn-primary" id="view-full-encounter">View Full Details</a>
            </div>
        </div>
    </div>
</div>

<!-- Status Update Modal -->
<div class="modal fade" id="statusUpdateModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Update Encounter Status</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <form id="status-update-form">
                    <input type="hidden" id="encounter-id" name="encounter_id">
                    <div class="mb-3">
                        <label class="form-label">New Status</label>
                        <select class="form-select" name="status" required>
                            <option value="">Select Status</option>
                            <option value="PLANNED">Planned</option>
                            <option value="ARRIVED">Arrived</option>
                            <option value="TRIAGED">Triaged</option>
                            <option value="IN_PROGRESS">In Progress</option>
                            <option value="ON_HOLD">On Hold</option>
                            <option value="FINISHED">Finished</option>
                            <option value="CANCELLED">Cancelled</option>
                        </select>
                    </div>
                    <div class="mb-3">
                        <label class="form-label">Notes (Optional)</label>
                        <textarea class="form-control" name="notes" rows="3" placeholder="Reason for status change..."></textarea>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                <button type="button" class="btn btn-primary" onclick="updateEncounterStatus()">Update Status</button>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block js %}
<script src="{% static 'assets/plugins/datatables.net/js/jquery.dataTables.min.js' %}"></script>
<script src="{% static 'assets/plugins/datatables.net-bs5/js/dataTables.bootstrap5.min.js' %}"></script>
<script src="{% static 'assets/plugins/datatables.net-responsive/js/dataTables.responsive.min.js' %}"></script>
<script src="{% static 'assets/plugins/datatables.net-responsive-bs5/js/responsive.bootstrap5.min.js' %}"></script>
<script src="{% static 'assets/plugins/select2/dist/js/select2.min.js' %}"></script>
<script src="{% static 'assets/plugins/bootstrap-datepicker/dist/js/bootstrap-datepicker.min.js' %}"></script>
<script>
$(document).ready(function() {
    var table;
    
    // Initialize DataTable
    table = $('#encounters-table').DataTable({
        processing: true,
        serverSide: true,
        ajax: {
            url: '{% url "emr:encounter_list_api" %}',
            data: function(d) {
                d.search_value = $('#search-input').val();
                d.status = $('#status-filter').val();
                d.encounter_type = $('#type-filter').val();
                d.date_range = $('#date-filter').val();
                d.start_date = $('#start-date').val();
                d.end_date = $('#end-date').val();
                d.provider = $('#provider-filter').val();
            }
        },
        columns: [
            {
                data: 'id',
                orderable: false,
                render: function(data, type, row) {
                    return '<div class="form-check"><input class="form-check-input encounter-checkbox" type="checkbox" value="' + data + '"></div>';
                }
            },
            {
                data: 'patient',
                render: function(data, type, row) {
                    return '<div class="d-flex align-items-center">' +
                           '<div class="flex-fill">' +
                           '<div class="fw-bold">' + data.name + '</div>' +
                           '<div class="text-muted small">' + data.mrn + '</div>' +
                           '</div></div>';
                }
            },
            {
                data: 'provider',
                render: function(data, type, row) {
                    return '<div>' +
                           '<div class="fw-bold">Dr. ' + data.name + '</div>' +
                           '<div class="text-muted small">' + (data.specialty || 'General') + '</div>' +
                           '</div>';
                }
            },
            {
                data: 'encounter_type',
                render: function(data, type, row) {
                    var badgeClass = {
                        'INPATIENT': 'bg-primary',
                        'OUTPATIENT': 'bg-success',
                        'EMERGENCY': 'bg-danger',
                        'URGENT_CARE': 'bg-warning',
                        'TELEMEDICINE': 'bg-info',
                        'CONSULTATION': 'bg-secondary'
                    };
                    return '<span class="badge ' + (badgeClass[data] || 'bg-secondary') + '">' + row.encounter_type_display + '</span>';
                }
            },
            {
                data: 'status',
                render: function(data, type, row) {
                    var badgeClass = {
                        'PLANNED': 'bg-secondary',
                        'ARRIVED': 'bg-info',
                        'TRIAGED': 'bg-warning',
                        'IN_PROGRESS': 'bg-primary',
                        'ON_HOLD': 'bg-warning',
                        'FINISHED': 'bg-success',
                        'CANCELLED': 'bg-danger'
                    };
                    return '<span class="badge ' + (badgeClass[data] || 'bg-secondary') + '">' + row.status_display + '</span>';
                }
            },
            {
                data: 'start_datetime',
                render: function(data, type, row) {
                    var date = new Date(data);
                    return '<div>' +
                           '<div>' + date.toLocaleDateString() + '</div>' +
                           '<div class="text-muted small">' + date.toLocaleTimeString() + '</div>' +
                           '</div>';
                }
            },
            {
                data: 'duration',
                render: function(data, type, row) {
                    if (data) {
                        return data;
                    } else if (row.is_active) {
                        return '<span class="text-primary">Ongoing</span>';
                    }
                    return '<span class="text-muted">-</span>';
                }
            },
            {
                data: 'location',
                render: function(data, type, row) {
                    if (data) {
                        return '<div>' +
                               '<div>' + data + '</div>' +
                               (row.room_number ? '<div class="text-muted small">Room ' + row.room_number + '</div>' : '') +
                               '</div>';
                    }
                    return '<span class="text-muted">Not specified</span>';
                }
            },
            {
                data: 'priority',
                render: function(data, type, row) {
                    var badgeClass = {
                        'ROUTINE': 'bg-secondary',
                        'URGENT': 'bg-warning',
                        'ASAP': 'bg-warning',
                        'STAT': 'bg-danger',
                        'EMERGENCY': 'bg-danger'
                    };
                    return '<span class="badge ' + (badgeClass[data] || 'bg-secondary') + '">' + row.priority_display + '</span>';
                }
            },
            {
                data: 'documentation_complete',
                render: function(data, type, row) {
                    if (data) {
                        return '<i class="fa fa-check-circle text-success" title="Complete"></i>';
                    } else if (row.status === 'FINISHED') {
                        return '<i class="fa fa-exclamation-triangle text-warning" title="Pending"></i>';
                    }
                    return '<i class="fa fa-clock text-muted" title="In Progress"></i>';
                }
            },
            {
                data: 'id',
                orderable: false,
                render: function(data, type, row) {
                    return '<div class="btn-group btn-group-sm">' +
                           '<button class="btn btn-outline-primary" onclick="viewEncounter(' + data + ')" title="View">' +
                           '<i class="fa fa-eye"></i></button>' +
                           '<button class="btn btn-outline-secondary" onclick="editEncounter(' + data + ')" title="Edit">' +
                           '<i class="fa fa-edit"></i></button>' +
                           '<button class="btn btn-outline-info" onclick="updateStatus(' + data + ')" title="Update Status">' +
                           '<i class="fa fa-tasks"></i></button>' +
                           '</div>';
                }
            }
        ],
        order: [[5, 'desc']],
        pageLength: 25,
        responsive: true,
        language: {
            processing: '<div class="d-flex justify-content-center"><div class="spinner-border" role="status"></div></div>'
        }
    });
    
    // Initialize Select2
    $('.select2').select2({
        theme: 'bootstrap-5',
        width: '100%'
    });
    
    // Load providers for filter
    loadProviders();
    
    // Filter event handlers
    $('#search-input, #status-filter, #type-filter, #date-filter, #provider-filter').on('change keyup', function() {
        if ($(this).attr('id') === 'date-filter' && $(this).val() === 'custom') {
            $('#custom-date-range').show();
        } else if ($(this).attr('id') === 'date-filter') {
            $('#custom-date-range').hide();
        }
        table.draw();
    });
    
    $('#apply-date-filter').on('click', function() {
        table.draw();
    });
    
    // Select all checkbox
    $('#select-all').on('change', function() {
        $('.encounter-checkbox').prop('checked', this.checked);
        updateBulkActions();
    });
    
    // Individual checkbox change
    $(document).on('change', '.encounter-checkbox', function() {
        updateBulkActions();
    });
    
    // Auto-refresh every 30 seconds
    setInterval(function() {
        table.ajax.reload(null, false);
    }, 30000);
});

function loadProviders() {
    $.ajax({
        url: '{% url "users:provider_list_api" %}',
        success: function(data) {
            var select = $('#provider-filter');
            data.forEach(function(provider) {
                select.append('<option value="' + provider.id + '">Dr. ' + provider.name + '</option>');
            });
        }
    });
}

function updateBulkActions() {
    var checkedCount = $('.encounter-checkbox:checked').length;
    $('#bulk-actions-btn, #bulk-dropdown').prop('disabled', checkedCount === 0);
}

function viewEncounter(encounterId) {
    window.location.href = '{% url "emr:encounter_detail" 0 %}'.replace('0', encounterId);
}

function editEncounter(encounterId) {
    window.location.href = '{% url "emr:encounter_update" 0 %}'.replace('0', encounterId);
}

function updateStatus(encounterId) {
    $('#encounter-id').val(encounterId);
    $('#statusUpdateModal').modal('show');
}

function updateEncounterStatus() {
    var formData = $('#status-update-form').serialize();
    
    $.ajax({
        url: '{% url "emr:encounter_update_status" %}',
        method: 'POST',
        data: formData + '&csrfmiddlewaretoken=' + '{{ csrf_token }}',
        success: function(response) {
            if (response.success) {
                toastr.success('Encounter status updated successfully');
                $('#statusUpdateModal').modal('hide');
                $('#encounters-table').DataTable().ajax.reload();
            } else {
                toastr.error('Failed to update encounter status');
            }
        },
        error: function() {
            toastr.error('An error occurred while updating the status');
        }
    });
}

function bulkUpdateStatus(status) {
    var selectedIds = $('.encounter-checkbox:checked').map(function() {
        return this.value;
    }).get();
    
    if (selectedIds.length === 0) {
        toastr.warning('Please select encounters to update');
        return;
    }
    
    if (confirm('Are you sure you want to update ' + selectedIds.length + ' encounter(s)?')) {
        $.ajax({
            url: '{% url "emr:encounter_bulk_update" %}',
            method: 'POST',
            data: {
                'encounter_ids': selectedIds,
                'status': status,
                'csrfmiddlewaretoken': '{{ csrf_token }}'
            },
            success: function(response) {
                if (response.success) {
                    toastr.success(response.message);
                    $('#encounters-table').DataTable().ajax.reload();
                    $('#select-all').prop('checked', false);
                    updateBulkActions();
                } else {
                    toastr.error('Failed to update encounters');
                }
            },
            error: function() {
                toastr.error('An error occurred during bulk update');
            }
        });
    }
}

function bulkExport() {
    var selectedIds = $('.encounter-checkbox:checked').map(function() {
        return this.value;
    }).get();
    
    if (selectedIds.length === 0) {
        toastr.warning('Please select encounters to export');
        return;
    }
    
    window.location.href = '{% url "emr:encounter_export" %}?ids=' + selectedIds.join(',');
}

function exportData(format) {
    window.location.href = '{% url "emr:encounter_export" %}?format=' + format;
}

function refreshTable() {
    $('#encounters-table').DataTable().ajax.reload();
    toastr.info('Table refreshed');
}
</script>
{% endblock %}