'use client';

import { Loader2 } from 'lucide-react';

import { Badge } from '@/components/ui/badge';
import { Button } from '@/components/ui/button';
import { CodeBlock } from '@/components/ui/code-block';
import {
  Sheet,
  SheetContent,
  SheetDescription,
  SheetFooter,
  SheetHeader,
  SheetTitle,
} from '@/components/ui/sheet';
import type { ConfigPreviewResult } from '@/lib/services/openflare';

interface PreviewSheetProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  preview: ConfigPreviewResult | null;
  loading: boolean;
  error: string | null;
  publishing: boolean;
  canPublish: boolean;
  onPublish: () => void;
}

export function PreviewSheet({
  open,
  onOpenChange,
  preview,
  loading,
  error,
  publishing,
  canPublish,
  onPublish,
}: PreviewSheetProps) {
  return (
    <Sheet open={open} onOpenChange={onOpenChange}>
      <SheetContent className='sm:max-w-2xl w-full p-0 flex h-svh flex-col gap-0'>
        <SheetHeader className='px-5 py-4 border-b'>
          <SheetTitle>发布预览</SheetTitle>
          <SheetDescription>
            查看待发布配置的渲染结果与支持文件。
          </SheetDescription>
        </SheetHeader>

        <div className='flex-1 min-h-0 overflow-y-auto px-5 py-4'>
          {loading ? (
            <div className='flex items-center justify-center gap-2 py-16 text-sm text-muted-foreground'>
              <Loader2 className='size-4 animate-spin' />
              正在加载预览...
            </div>
          ) : error ? (
            <p className='text-sm text-destructive'>{error}</p>
          ) : preview ? (
            <div className='space-y-5 pb-4'>
              <div className='flex flex-wrap gap-2'>
                <Badge variant='outline' className='rounded-full text-[10px]'>
                  规则 {preview.route_count} 条
                </Badge>
                <Badge variant='outline' className='rounded-full text-[10px]'>
                  网站 {preview.website_count} 个
                </Badge>
                <Badge
                  variant='outline'
                  className='rounded-full text-[10px] font-mono'
                >
                  {preview.checksum.slice(0, 16)}...
                </Badge>
              </div>

              <div className='space-y-2'>
                <p className='text-xs font-semibold'>主配置</p>
                <CodeBlock
                  code={preview.main_config}
                  language='nginx'
                  className='my-0 text-xs'
                />
              </div>

              <div className='space-y-2'>
                <p className='text-xs font-semibold'>路由配置</p>
                <CodeBlock
                  code={preview.rendered_config}
                  language='nginx'
                  className='my-0 text-xs'
                />
              </div>

              {preview.support_files.length > 0 ? (
                <div className='space-y-2'>
                  <p className='text-xs font-semibold'>
                    支持文件 ({preview.support_files.length})
                  </p>
                  {preview.support_files.map((file) => (
                    <details
                      key={file.path}
                      className='rounded-lg border border-dashed px-3 py-2'
                    >
                      <summary className='cursor-pointer text-xs font-medium'>
                        {file.path}
                      </summary>
                      <CodeBlock
                        code={file.content}
                        language='text'
                        className='my-2 text-xs'
                      />
                    </details>
                  ))}
                </div>
              ) : (
                <p className='text-xs text-muted-foreground'>
                  当前发布不需要额外支持文件。
                </p>
              )}

              {!canPublish ? (
                <p className='text-xs text-muted-foreground'>
                  当前规则与已激活版本一致，无法重复发布。
                </p>
              ) : null}
            </div>
          ) : null}
        </div>

        <SheetFooter className='px-5 py-4 border-t'>
          <Button
            variant='outline'
            onClick={() => onOpenChange(false)}
            disabled={publishing}
          >
            关闭
          </Button>
          <Button
            onClick={onPublish}
            disabled={!canPublish || publishing || loading}
          >
            {publishing ? (
              <>
                <Loader2 className='size-4 animate-spin mr-1' />
                发布中...
              </>
            ) : (
              '确认发布'
            )}
          </Button>
        </SheetFooter>
      </SheetContent>
    </Sheet>
  );
}