package app

import (
    "fmt"
    "github.com/seaweedfs/seaweedfs/weed/admin/dash"
)

templ ClusterCollections(data dash.ClusterCollectionsData) {
    <div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
        <h1 class="h2">
            <i class="fas fa-layer-group me-2"></i>Cluster Collections
        </h1>
        <div class="btn-toolbar mb-2 mb-md-0">
            <div class="btn-group me-2">
                <button type="button" class="btn btn-sm btn-outline-primary" onclick="exportCollections()">
                    <i class="fas fa-download me-1"></i>Export
                </button>
            </div>
        </div>
    </div>

    <div id="collections-content">
        <!-- Summary Cards -->
        <div class="row mb-4">
            <div class="col-xl-3 col-md-6 mb-4">
                <div class="card border-left-primary shadow h-100 py-2">
                    <div class="card-body">
                        <div class="row no-gutters align-items-center">
                            <div class="col mr-2">
                                <div class="text-xs font-weight-bold text-primary text-uppercase mb-1">
                                    Total Collections
                                </div>
                                <div class="h5 mb-0 font-weight-bold text-gray-800">
                                    {fmt.Sprintf("%d", data.TotalCollections)}
                                </div>
                            </div>
                            <div class="col-auto">
                                <i class="fas fa-layer-group fa-2x text-gray-300"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="col-xl-3 col-md-6 mb-4">
                <div class="card border-left-info shadow h-100 py-2">
                    <div class="card-body">
                        <div class="row no-gutters align-items-center">
                            <div class="col mr-2">
                                <div class="text-xs font-weight-bold text-info text-uppercase mb-1">
                                    Total Volumes
                                </div>
                                <div class="h5 mb-0 font-weight-bold text-gray-800">
                                    {fmt.Sprintf("%d", data.TotalVolumes)}
                                </div>
                            </div>
                            <div class="col-auto">
                                <i class="fas fa-database fa-2x text-gray-300"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="col-xl-3 col-md-6 mb-4">
                <div class="card border-left-warning shadow h-100 py-2">
                    <div class="card-body">
                        <div class="row no-gutters align-items-center">
                            <div class="col mr-2">
                                <div class="text-xs font-weight-bold text-warning text-uppercase mb-1">
                                    Total Files
                                </div>
                                <div class="h5 mb-0 font-weight-bold text-gray-800">
                                    {fmt.Sprintf("%d", data.TotalFiles)}
                                </div>
                            </div>
                            <div class="col-auto">
                                <i class="fas fa-file fa-2x text-gray-300"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>

            <div class="col-xl-3 col-md-6 mb-4">
                <div class="card border-left-secondary shadow h-100 py-2">
                    <div class="card-body">
                        <div class="row no-gutters align-items-center">
                            <div class="col mr-2">
                                <div class="text-xs font-weight-bold text-secondary text-uppercase mb-1">
                                    Total Storage Size
                                </div>
                                <div class="h5 mb-0 font-weight-bold text-gray-800">
                                    {formatBytes(data.TotalSize)}
                                </div>
                            </div>
                            <div class="col-auto">
                                <i class="fas fa-hdd fa-2x text-gray-300"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Collections Table -->
        <div class="card shadow mb-4">
            <div class="card-header py-3">
                <h6 class="m-0 font-weight-bold text-primary">
                    <i class="fas fa-layer-group me-2"></i>Collection Details
                </h6>
            </div>
            <div class="card-body">
                if len(data.Collections) > 0 {
                    <div class="table-responsive">
                        <table class="table table-hover" id="collectionsTable">
                            <thead>
                                <tr>
                                    <th>Collection Name</th>
                                    <th>Volumes</th>
                                    <th>Files</th>
                                    <th>Size</th>
                                    <th>Disk Types</th>
                                    <th>Actions</th>
                                </tr>
                            </thead>
                            <tbody>
                                for _, collection := range data.Collections {
                                    <tr>
                                        <td>
                                            <a href={templ.SafeURL(fmt.Sprintf("/cluster/volumes?collection=%s", collection.Name))} class="text-decoration-none">
                                            <strong>{collection.Name}</strong>
                                            </a>
                                        </td>
                                        <td>
                                            <a href={templ.SafeURL(fmt.Sprintf("/cluster/volumes?collection=%s", collection.Name))} class="text-decoration-none">
                                            <div class="d-flex align-items-center">
                                                <i class="fas fa-database me-2 text-muted"></i>
                                                {fmt.Sprintf("%d", collection.VolumeCount)}
                                            </div>
                                            </a>
                                        </td>
                                        <td>
                                            <div class="d-flex align-items-center">
                                                <i class="fas fa-file me-2 text-muted"></i>
                                                {fmt.Sprintf("%d", collection.FileCount)}
                                            </div>
                                        </td>
                                        <td>
                                            <div class="d-flex align-items-center">
                                                <i class="fas fa-hdd me-2 text-muted"></i>
                                                {formatBytes(collection.TotalSize)}
                                            </div>
                                        </td>
                                        <td>
                                            for i, diskType := range collection.DiskTypes {
                                                if i > 0 {
                                                    <span class="me-1"></span>
                                                }
                                                <span class={fmt.Sprintf("badge bg-%s me-1", getDiskTypeColor(diskType))}>{diskType}</span>
                                            }
                                            if len(collection.DiskTypes) == 0 {
                                                <span class="text-muted">Unknown</span>
                                            }
                                        </td>
                                        <td>
                                            <button type="button" 
                                                    class="btn btn-outline-primary btn-sm" 
                                                    title="View Details"
                                                    data-action="view-details"
                                                    data-name={collection.Name}
                                                    data-datacenter={collection.DataCenter}
                                                    data-volume-count={fmt.Sprintf("%d", collection.VolumeCount)}
                                                    data-file-count={fmt.Sprintf("%d", collection.FileCount)}
                                                    data-total-size={fmt.Sprintf("%d", collection.TotalSize)}
                                                    data-disk-types={formatDiskTypes(collection.DiskTypes)}>
                                                <i class="fas fa-eye"></i>
                                            </button>
                                        </td>
                                    </tr>
                                }
                            </tbody>
                        </table>
                    </div>
                } else {
                    <div class="text-center py-5">
                        <i class="fas fa-layer-group fa-3x text-muted mb-3"></i>
                        <h5 class="text-muted">No Collections Found</h5>
                        <p class="text-muted">No collections are currently configured in the cluster.</p>
                    </div>
                }
            </div>
        </div>

        <!-- Last Updated -->
        <div class="row">
            <div class="col-12">
                <small class="text-muted">
                    <i class="fas fa-clock me-1"></i>
                    Last updated: {data.LastUpdated.Format("2006-01-02 15:04:05")}
                </small>
            </div>
        </div>
    </div>





    <!-- JavaScript for cluster collections functionality -->
    <script>
    document.addEventListener('DOMContentLoaded', function() {
        // Handle collection action buttons
        document.addEventListener('click', function(e) {
            const button = e.target.closest('[data-action]');
            if (!button) return;
            
            const action = button.getAttribute('data-action');
            
            switch(action) {
                case 'view-details':
                    const collectionData = {
                        name: button.getAttribute('data-name'),
                        datacenter: button.getAttribute('data-datacenter'),
                        volumeCount: parseInt(button.getAttribute('data-volume-count')),
                        fileCount: parseInt(button.getAttribute('data-file-count')),
                        totalSize: parseInt(button.getAttribute('data-total-size')),
                        diskTypes: button.getAttribute('data-disk-types')
                    };
                    showCollectionDetails(collectionData);
                    break;
            }
        });
    });
    
    function showCollectionDetails(collection) {
        const modalHtml = '<div class="modal fade" id="collectionDetailsModal" tabindex="-1">' +
            '<div class="modal-dialog modal-lg">' +
            '<div class="modal-content">' +
            '<div class="modal-header">' +
            '<h5 class="modal-title"><i class="fas fa-layer-group me-2"></i>Collection Details: ' + collection.name + '</h5>' +
            '<button type="button" class="btn-close" data-bs-dismiss="modal"></button>' +
            '</div>' +
            '<div class="modal-body">' +
            '<div class="row">' +
            '<div class="col-md-6">' +
            '<h6 class="text-primary"><i class="fas fa-info-circle me-1"></i>Basic Information</h6>' +
            '<table class="table table-sm">' +
            '<tr><td><strong>Collection Name:</strong></td><td><code>' + collection.name + '</code></td></tr>' +
            '<tr><td><strong>Data Center:</strong></td><td>' +
            (collection.datacenter ? '<span class="badge bg-light text-dark">' + collection.datacenter + '</span>' : '<span class="text-muted">N/A</span>') +
            '</td></tr>' +
            '<tr><td><strong>Disk Types:</strong></td><td>' +
            (collection.diskTypes ? collection.diskTypes.split(', ').map(type => 
                '<span class="badge bg-' + getDiskTypeBadgeColor(type) + ' me-1">' + type + '</span>'
            ).join('') : '<span class="text-muted">Unknown</span>') +
            '</td></tr>' +
            '</table>' +
            '</div>' +
            '<div class="col-md-6">' +
            '<h6 class="text-primary"><i class="fas fa-chart-bar me-1"></i>Storage Statistics</h6>' +
            '<table class="table table-sm">' +
            '<tr><td><strong>Total Volumes:</strong></td><td>' +
            '<div class="d-flex align-items-center">' +
            '<i class="fas fa-database me-2 text-muted"></i>' +
            '<span>' + collection.volumeCount.toLocaleString() + '</span>' +
            '</div>' +
            '</td></tr>' +
            '<tr><td><strong>Total Files:</strong></td><td>' +
            '<div class="d-flex align-items-center">' +
            '<i class="fas fa-file me-2 text-muted"></i>' +
            '<span>' + collection.fileCount.toLocaleString() + '</span>' +
            '</div>' +
            '</td></tr>' +
            '<tr><td><strong>Total Size:</strong></td><td>' +
            '<div class="d-flex align-items-center">' +
            '<i class="fas fa-hdd me-2 text-muted"></i>' +
            '<span>' + formatBytes(collection.totalSize) + '</span>' +
            '</div>' +
            '</td></tr>' +
            '</table>' +
            '</div>' +
            '</div>' +
            '<div class="row mt-3">' +
            '<div class="col-12">' +
            '<h6 class="text-primary"><i class="fas fa-link me-1"></i>Quick Actions</h6>' +
            '<div class="d-grid gap-2 d-md-flex">' +
            '<a href="/cluster/volumes?collection=' + encodeURIComponent(collection.name) + '" class="btn btn-outline-primary">' +
            '<i class="fas fa-database me-1"></i>View Volumes' +
            '</a>' +
            '<a href="/files?collection=' + encodeURIComponent(collection.name) + '" class="btn btn-outline-info">' +
            '<i class="fas fa-folder me-1"></i>Browse Files' +
            '</a>' +
            '</div>' +
            '</div>' +
            '</div>' +
            '</div>' +
            '<div class="modal-footer">' +
            '<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>' +
            '</div>' +
            '</div>' +
            '</div>' +
            '</div>';
        
        // Remove existing modal if present
        const existingModal = document.getElementById('collectionDetailsModal');
        if (existingModal) {
            existingModal.remove();
        }
        
        // Add modal to body and show
        document.body.insertAdjacentHTML('beforeend', modalHtml);
        const modal = new bootstrap.Modal(document.getElementById('collectionDetailsModal'));
        modal.show();
        
        // Remove modal when hidden
        document.getElementById('collectionDetailsModal').addEventListener('hidden.bs.modal', function() {
            this.remove();
        });
    }
    
    function getDiskTypeBadgeColor(diskType) {
        switch(diskType.toLowerCase()) {
            case 'ssd':
                return 'primary';
            case 'hdd':
            case '':
                return 'secondary';
            default:
                return 'info';
        }
    }
    
    function formatBytes(bytes) {
        if (bytes === 0) return '0 Bytes';
        const k = 1024;
        const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
        const i = Math.floor(Math.log(bytes) / Math.log(k));
        return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
    }
    
    function exportCollections() {
        // Simple CSV export of collections list
        const rows = Array.from(document.querySelectorAll('#collectionsTable tbody tr')).map(row => {
            const cells = row.querySelectorAll('td');
            if (cells.length > 1) {
                return {
                    name: cells[0].textContent.trim(),
                    volumes: cells[1].textContent.trim(),
                    files: cells[2].textContent.trim(),
                    size: cells[3].textContent.trim(),
                    diskTypes: cells[4].textContent.trim()
                };
            }
            return null;
        }).filter(row => row !== null);
        
        const csvContent = "data:text/csv;charset=utf-8," + 
            "Collection Name,Volumes,Files,Size,Disk Types\n" +
            rows.map(r => '"' + r.name + '","' + r.volumes + '","' + r.files + '","' + r.size + '","' + r.diskTypes + '"').join("\n");
        
        const encodedUri = encodeURI(csvContent);
        const link = document.createElement("a");
        link.setAttribute("href", encodedUri);
        link.setAttribute("download", "collections.csv");
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
    }
    </script>
}

func getDiskTypeColor(diskType string) string {
    switch diskType {
    case "ssd":
        return "primary"
    case "hdd", "":
        return "secondary"
    default:
        return "info"
    }
}

func formatDiskTypes(diskTypes []string) string {
    if len(diskTypes) == 0 {
        return "Unknown"
    }
    if len(diskTypes) == 1 {
        return diskTypes[0]
    }
    // For multiple disk types, join with comma
    result := ""
    for i, diskType := range diskTypes {
        if i > 0 {
            result += ", "
        }
        result += diskType
    }
    return result
}