export default {  async fetch(request, env): Promise<Response> {    if (request.method !== 'POST') {      return new Response(        'Send a multipart/form-data POST with a "file" field',        { status: 405 },      );    }
    // Forward the incoming multipart upload straight to the Images API.    // Content-Type must be preserved so the multipart boundary is parsed correctly.    const uploadResponse = await fetch(      `https://api.cloudflare.com/client/v4/accounts/${env.ACCOUNT_ID}/images/v1`,      {        method: 'POST',        headers: {          Authorization: `Bearer ${env.CLOUDFLARE_API_TOKEN}`,          'Content-Type': request.headers.get('Content-Type') ?? '',        },        body: request.body,      },    );
    const { success, result, errors } = await uploadResponse.json();    if (!success) {      return Response.json({ errors }, { status: 502 });    }
    // Serve the optimized image via a predefined variant (e.g. "public").    // For dynamic params like w=800,format=auto, enable Flexible Variants.    const optimizedUrl = `https://imagedelivery.net/${env.DELIVERY_HASH}/${result.id}/public`;    return Response.redirect(optimizedUrl, 302);  },};

export interface Env {  AI: Ai;  CLOUDFLARE_API_TOKEN: string;  CLOUDFLARE_ACCOUNT_ID: string;  DELIVERY_HASH: string;}
export default {  async fetch(request, env): Promise<Response> {    // Generate image with Workers AI    const stream = await env.AI.run('@cf/lykon/dreamshaper-8-lcm', {      prompt: 'A beautiful sunset over mountains',    });    const bytes = await new Response(stream).bytes();
    // Upload to Cloudflare Images    const formData = new FormData();    formData.append('file', new File([bytes], 'image.jpg'));
    const uploadResponse = await fetch(      `https://api.cloudflare.com/client/v4/accounts/${env.CLOUDFLARE_ACCOUNT_ID}/images/v1`,      {        method: 'POST',        headers: {          Authorization: `Bearer ${env.CLOUDFLARE_API_TOKEN}`,        },        body: formData,      },    );
    const uploadResult = (await uploadResponse.json()) as {      success: boolean;      result: { id: string } | null;      errors: Array<{ code: number; message: string }>;    };
    if (!uploadResult.success || !uploadResult.result) {      console.error(        'Image upload failed:',        JSON.stringify(uploadResult, null, 2),      );      return new Response(        JSON.stringify({          error: 'Image upload failed',          status: uploadResponse.status,          details: uploadResult,        }),        {          status: 500,          headers: { 'content-type': 'application/json' },        },      );    }
    const imageId = uploadResult.result.id;
    // Return optimized image URL (requires flexible variants enabled on the account)    const optimizedUrl = `https://imagedelivery.net/${env.DELIVERY_HASH}/${imageId}/w=1200,h=800,format=auto,quality=85`;
    return new Response(      JSON.stringify({        imageUrl: optimizedUrl,        originalId: imageId,      }),      {        headers: { 'content-type': 'application/json' },      },    );  },} satisfies ExportedHandler<Env>;