import { useState, useEffect } from 'react';
import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
import { Copy, ExternalLink } from 'lucide-react';
import { format } from 'date-fns';
import { toast } from 'sonner';
import { supabase } from '@/lib/supabaseClient';

interface Breadcrumb {
  timestamp: string;
  category: string;
  message: string;
  level?: string;
  sequence_order?: number;
}

interface ErrorDetails {
  request_id: string;
  created_at: string;
  error_type: string;
  error_message: string;
  error_stack?: string;
  endpoint: string;
  method: string;
  status_code: number;
  duration_ms: number;
  user_id?: string;
  request_breadcrumbs?: Breadcrumb[];
  user_agent?: string;
  client_version?: string;
  timezone?: string;
  referrer?: string;
  ip_address_hash?: string;
}

interface ErrorDetailsModalProps {
  error: ErrorDetails;
  onClose: () => void;
}

export function ErrorDetailsModal({ error, onClose }: ErrorDetailsModalProps) {
  // Use breadcrumbs from error object if already fetched, otherwise they'll be empty
  const breadcrumbs = error.request_breadcrumbs || [];
  const copyErrorId = () => {
    navigator.clipboard.writeText(error.request_id);
    toast.success('Error ID copied to clipboard');
  };

  const copyErrorReport = () => {
    const report = `
Error Report
============
Request ID: ${error.request_id}
Timestamp: ${format(new Date(error.created_at), 'PPpp')}
Type: ${error.error_type}
Endpoint: ${error.endpoint}
Method: ${error.method}
Status: ${error.status_code}${error.duration_ms != null ? `\nDuration: ${error.duration_ms}ms` : ''}

Error Message:
${error.error_message}

${error.error_stack ? `Stack Trace:\n${error.error_stack}` : ''}
`.trim();
    
    navigator.clipboard.writeText(report);
    toast.success('Error report copied to clipboard');
  };

  return (
    <Dialog open onOpenChange={onClose}>
      <DialogContent className="max-w-4xl max-h-[80vh] overflow-y-auto">
        <DialogHeader>
          <DialogTitle className="flex items-center gap-2">
            Error Details
            <Badge variant="destructive">{error.error_type}</Badge>
          </DialogTitle>
        </DialogHeader>

        <Tabs defaultValue="overview" className="w-full">
          <TabsList>
            <TabsTrigger value="overview">Overview</TabsTrigger>
            <TabsTrigger value="stack">Stack Trace</TabsTrigger>
            <TabsTrigger value="breadcrumbs">Breadcrumbs</TabsTrigger>
            <TabsTrigger value="environment">Environment</TabsTrigger>
          </TabsList>

          <TabsContent value="overview" className="space-y-4">
            <div className="grid grid-cols-2 gap-4">
              <div>
                <label className="text-sm font-medium">Request ID</label>
                <div className="flex items-center gap-2">
                  <code className="text-sm bg-muted px-2 py-1 rounded">
                    {error.request_id}
                  </code>
                  <Button size="sm" variant="ghost" onClick={copyErrorId}>
                    <Copy className="w-4 h-4" />
                  </Button>
                </div>
              </div>
              <div>
                <label className="text-sm font-medium">Timestamp</label>
                <p className="text-sm">{format(new Date(error.created_at), 'PPpp')}</p>
              </div>
              <div>
                <label className="text-sm font-medium">Endpoint</label>
                <p className="text-sm font-mono">{error.endpoint}</p>
              </div>
              <div>
                <label className="text-sm font-medium">Method</label>
                <Badge variant="outline">{error.method}</Badge>
              </div>
              <div>
                <label className="text-sm font-medium">Status Code</label>
                <p className="text-sm">{error.status_code}</p>
              </div>
              {error.duration_ms != null && (
                <div>
                  <label className="text-sm font-medium">Duration</label>
                  <p className="text-sm">{error.duration_ms}ms</p>
                </div>
              )}
              {error.user_id && (
                <div>
                  <label className="text-sm font-medium">User ID</label>
                  <a 
                    href={`/admin/users?search=${error.user_id}`}
                    className="text-sm text-primary hover:underline flex items-center gap-1"
                  >
                    {error.user_id.slice(0, 8)}...
                    <ExternalLink className="w-3 h-3" />
                  </a>
                </div>
              )}
            </div>

            <div>
              <label className="text-sm font-medium">Error Message</label>
              <div className="bg-muted p-4 rounded-lg mt-2">
                <p className="text-sm font-mono">{error.error_message}</p>
              </div>
            </div>
          </TabsContent>

          <TabsContent value="stack">
            {error.error_stack ? (
              <pre className="bg-muted p-4 rounded-lg overflow-x-auto text-xs">
                {error.error_stack}
              </pre>
            ) : (
              <p className="text-muted-foreground">No stack trace available</p>
            )}
          </TabsContent>

          <TabsContent value="breadcrumbs">
            {breadcrumbs && breadcrumbs.length > 0 ? (
              <div className="space-y-2">
                {breadcrumbs
                  .sort((a, b) => (a.sequence_order || 0) - (b.sequence_order || 0))
                  .map((crumb, index) => (
                    <div key={index} className="border-l-2 border-primary pl-4 py-2">
                      <div className="flex items-center gap-2 mb-1">
                        <Badge variant="outline" className="text-xs">
                          {crumb.category}
                        </Badge>
                        <Badge variant={crumb.level === 'error' ? 'destructive' : 'secondary'} className="text-xs">
                          {crumb.level || 'info'}
                        </Badge>
                        <span className="text-xs text-muted-foreground">
                          {format(new Date(crumb.timestamp), 'HH:mm:ss.SSS')}
                        </span>
                      </div>
                      <p className="text-sm">{crumb.message}</p>
                    </div>
                  ))}
              </div>
            ) : (
              <p className="text-muted-foreground">No breadcrumbs recorded</p>
            )}
          </TabsContent>

          <TabsContent value="environment">
            <div className="space-y-4">
              <div className="grid grid-cols-2 gap-4">
                {error.user_agent && (
                  <div>
                    <label className="text-sm font-medium">User Agent</label>
                    <p className="text-xs font-mono break-all">{error.user_agent}</p>
                  </div>
                )}
                {error.client_version && (
                  <div>
                    <label className="text-sm font-medium">Client Version</label>
                    <p className="text-sm">{error.client_version}</p>
                  </div>
                )}
                {error.timezone && (
                  <div>
                    <label className="text-sm font-medium">Timezone</label>
                    <p className="text-sm">{error.timezone}</p>
                  </div>
                )}
                {error.referrer && (
                  <div>
                    <label className="text-sm font-medium">Referrer</label>
                    <p className="text-xs font-mono break-all">{error.referrer}</p>
                  </div>
                )}
                {error.ip_address_hash && (
                  <div>
                    <label className="text-sm font-medium">IP Hash</label>
                    <p className="text-xs font-mono">{error.ip_address_hash}</p>
                  </div>
                )}
              </div>
              {!error.user_agent && !error.client_version && !error.timezone && !error.referrer && !error.ip_address_hash && (
                <p className="text-muted-foreground">No environment data available</p>
              )}
            </div>
          </TabsContent>
        </Tabs>

        <div className="flex justify-end gap-2">
          <Button variant="outline" onClick={copyErrorReport}>
            <Copy className="w-4 h-4 mr-2" />
            Copy Report
          </Button>
          <Button onClick={onClose}>Close</Button>
        </div>
      </DialogContent>
    </Dialog>
  );
}