import { createProductSKUs } from 'lib/helpers/skus';
import { getProducts } from 'lib/shopify';

import { Dropbox, DropboxResponse, files } from 'dropbox';

// how to get new Dropbox refresh token
// 1. go to https://www.dropbox.com/oauth2/authorize?client_id=YOUR_APP_KEY&token_access_type=offline&response_type=code&redirect_uri=https://www.dropbox.com/1/oauth2/display_token
// 2. copy code from URL after redirect
// 3. curl
// curl -X POST https://api.dropboxapi.com/oauth2/token \
// -d 'grant_type=authorization_code' \
// -d 'code=CODE_HERE' \
// -d 'client_id=CLIENT_ID' \
// -d 'client_secret=CLIENT_SECRET' \
// -d 'redirect_uri=https://www.dropbox.com/1/oauth2/display_token'


export default async function SKUCheckPage() {
  const products = await getProducts({});

  let dbxFiles: DropboxResponse<files.ListFolderResult> | undefined;
  let dbxError: string | undefined;

  try {
    const dbx = new Dropbox({
      clientId: process.env.DROPBOX_APP_KEY,
      clientSecret: process.env.DROPBOX_APP_SECRET,
      refreshToken: process.env.DROPBOX_REFRESH_TOKEN
    });
  
    dbxFiles = await dbx.filesListFolder({
      path: '/scape squared/004 print ready - print files'
    });
    
    // sabotage?
    // dbxFiles.result.entries = dbxFiles.result.entries.filter(file => file.name !== "SCSQ300262_NECK.png");
  } catch (e) {
    dbxError = e + ""
  }

  return (
    <div>
      {products.map((product) => {
        const skus = createProductSKUs(product.title);

        if (!skus) return <div key={product.id} className="m-10 bg-red-300  ">SKU error for product {product.title}</div>

        // sabotage?
        // product.variants[3]!.sku = 'SCSQ10001_STTU781_M_C002_B_NT';

        const productCode = skus[0]!.split('_')[0]
        const productBase = productCode!.slice(0, (productCode!.length -1))

        const productFiles = dbxFiles?.result.entries
          .filter((file) => file.name.startsWith(productBase!))
          
        const productFileNames = productFiles?.map(file => file.name);

        const sizeDigits = ["1", "2", "3"];
        const sideSuffixes = ["_NECK.png", "_BACK.png"];

        const expectedFiles = sizeDigits.flatMap((sizeDigit) =>
          sideSuffixes.flatMap((sideSuffix) => productBase + sizeDigit + sideSuffix)
        );

        const missingFiles = expectedFiles.filter(expected => !productFileNames?.includes(expected));
        const extraFiles = productFileNames?.filter(filename => !expectedFiles.includes(filename));

        return (
          <div key={product.id} className="mt-10 lg:grid lg:grid-cols-12 gap-x-4 gap-y-1">
            <h1 className="text-2xl lg:col-span-10 lg:col-start-3">{product.title}</h1>
            <div
              className={
                'mb-4 lg:col-span-4 lg:col-start-3 rounded ' +
                (missingFiles?.length > 0 ? 'bg-amber-300' : '')
              }
            >
              Dropbox:{' '}
              {missingFiles.length === 0
                ? '✅ All expected files found'
                : '⛔️ Missing files: ' + missingFiles.join(', ')}
              {extraFiles && <div className='text-sm'>(Extra files: {extraFiles.join(", ")})</div>}
              {dbxError}
            </div>
            {product.variants.map((variant, i) => (
              <>
                <div className="lg:col-span-1 lg:col-start-2 text-right">
                  {variant.selectedOptions[0]?.value}
                </div>
                <div
                  className={
                    'tabular-nums lg:col-span-4 rounded ' +
                    (variant.sku === skus[i] ? '' : 'bg-amber-300')
                  }
                >
                  {variant.sku.split('').map((letter, lIdx) => (
                    <span className="relative">
                      {letter}
                      {letter === skus[i]![lIdx] ? null : (
                        <div className="absolute left-0 right-0 top-0 bottom-0 bg-red-500 animate-ping rounded" />
                      )}
                    </span>
                  ))}{' '}
                  (Shopify)
                  <br />
                  {skus[i]} (Expected)
                </div>
              </>
            ))}
          </div>
        );
      })}
    </div>
  );
}