import { DataTable } from '@/components/admin/DataTable.tsx';
import { Badge, Button } from '@/components/ui';
import { useMediaAssets, useDeleteMediaAsset } from '@/hooks/api/useAdminAPI.ts';
import { useTranslation } from '@/hooks/useI18n.tsx';
import type { MediaAsset } from '@/services/admin-api.ts';
import { Edit, Plus, Trash2, Image as ImageIcon } from 'lucide-react';
import { useState } from 'react';
import { useNavigate } from 'react-router-dom';

const MediaLibraryPage = () => {
  const { t } = useTranslation();
  const navigate = useNavigate();
  const [currentPage, setCurrentPage] = useState(1);
  const pageSize = 25;
  const [typeFilter, setTypeFilter] = useState<string | undefined>();

  const { data, isLoading } = useMediaAssets({ type: typeFilter });
  const { mutate: deleteAsset } = useDeleteMediaAsset();

  const handleDelete = (asset: MediaAsset) => {
    if (window.confirm(t('adminPage.content.media.confirmDelete') || 'Delete this media asset?')) {
      deleteAsset(asset.id, {
        onSuccess: () => {
          // Query will refetch automatically
        },
      });
    }
  };

  const formatFileSize = (bytes: number): string => {
    if (bytes === 0) return '0 Bytes';
    const k = 1024;
    const sizes = ['Bytes', 'KB', 'MB', 'GB'];
    const i = Math.floor(Math.log(bytes) / Math.log(k));
    return Math.round((bytes / Math.pow(k, i)) * 100) / 100 + ' ' + sizes[i];
  };

  const getTypeBadge = (type: string) => {
    if (type.startsWith('image/')) {
      return <Badge variant="success">{t('adminPage.content.media.type') || 'Image'}</Badge>;
    }
    if (type.startsWith('video/')) {
      return <Badge variant="default">{t('adminPage.content.media.type') || 'Video'}</Badge>;
    }
    return <Badge variant="secondary">{type}</Badge>;
  };

  const columns = [
    {
      key: 'thumbnail',
      header: t('adminPage.content.media.table.thumbnail') || 'Thumbnail',
      render: (asset: MediaAsset) => (
        <div className="flex items-center gap-2">
          {asset.type?.startsWith('image/') ? (
            <img
              src={asset.url}
              alt={asset.altText || asset.name}
              className="h-12 w-12 rounded object-cover"
            />
          ) : (
            <div className="h-12 w-12 rounded bg-muted flex items-center justify-center">
              <ImageIcon className="h-6 w-6 text-muted-foreground" />
            </div>
          )}
        </div>
      ),
    },
    {
      key: 'name',
      header: t('adminPage.content.media.table.name') || 'Name',
      render: (asset: MediaAsset) => <span className="font-medium">{asset.name}</span>,
    },
    {
      key: 'type',
      header: t('adminPage.content.media.table.type') || 'Type',
      render: (asset: MediaAsset) => getTypeBadge(asset.type || 'unknown'),
    },
    {
      key: 'size',
      header: t('adminPage.content.media.table.size') || 'Size',
      render: (asset: MediaAsset) => (
        <span className="text-sm text-muted-foreground">{formatFileSize(asset.size || 0)}</span>
      ),
    },
    {
      key: 'uploadedAt',
      header: t('adminPage.content.media.table.uploaded') || 'Uploaded',
      render: (asset: MediaAsset) => {
        try {
          const date = new Date(asset.uploadedAt || asset.createdAt);
          return <span className="text-sm text-muted-foreground">{date.toLocaleDateString()}</span>;
        } catch {
          return <span className="text-sm text-muted-foreground">—</span>;
        }
      },
    },
  ];

  const actions = [
    {
      label: t('adminPage.content.media.edit') || 'Edit',
      icon: <Edit className="h-4 w-4" />,
      onClick: (asset: MediaAsset) => navigate(`/admin/content/media/${asset.id}/edit`),
    },
    {
      label: t('adminPage.content.media.delete') || 'Delete',
      icon: <Trash2 className="h-4 w-4" />,
      variant: 'destructive' as const,
      onClick: (asset: MediaAsset) => handleDelete(asset),
    },
  ];

  const assets = data?.assets || [];

  return (
    <div className="space-y-6">
      {/* Header */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-2xl font-bold">
            {t('adminPage.content.media.title') || 'Media Library'}
          </h1>
          <p className="text-muted-foreground">
            {t('adminPage.content.media.description') ||
              'Manage uploaded media assets, images, and files'}
          </p>
        </div>
        <Button onClick={() => navigate('/admin/content/media/new')}>
          <Plus className="h-4 w-4 mr-2" />
          {t('adminPage.content.media.newAsset') || 'Upload Media'}
        </Button>
      </div>

      {/* Filters */}
      <div className="flex gap-2">
        <Button
          variant={typeFilter === undefined ? 'default' : 'outline'}
          onClick={() => setTypeFilter(undefined)}
        >
          {t('adminPage.content.announcements.all') || 'All'}
        </Button>
        <Button
          variant={typeFilter === 'image' ? 'default' : 'outline'}
          onClick={() => setTypeFilter('image')}
        >
          {t('admin.media.filter.images')}
        </Button>
        <Button
          variant={typeFilter === 'video' ? 'default' : 'outline'}
          onClick={() => setTypeFilter('video')}
        >
          {t('admin.media.filter.videos')}
        </Button>
      </div>

      {/* Table */}
      <DataTable
        columns={columns}
        data={assets}
        getRowId={(asset) => asset.id}
        isLoading={isLoading}
        actions={actions}
        pagination={
          assets.length > 0
            ? {
                currentPage,
                totalPages: Math.ceil(assets.length / pageSize),
                pageSize,
                totalItems: assets.length,
                onPageChange: setCurrentPage,
              }
            : undefined
        }
        emptyMessage={t('adminPage.content.media.noAssets') || 'No media assets found'}
        emptyDescription={
          t('adminPage.content.media.createFirst') || 'Upload your first media asset to get started'
        }
        emptyAction={
          <Button onClick={() => navigate('/admin/content/media/new')}>
            <Plus className="h-4 w-4 mr-2" />
            {t('adminPage.content.media.newAsset') || 'Upload Media'}
          </Button>
        }
      />
    </div>
  );
};

export default MediaLibraryPage;