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chore: Fix rendering of base64 strings #50

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chore: Fix rendering of base64 strings #50

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38 changes: 22 additions & 16 deletions src/app/[id]/SelectEmails.tsx
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import { Button } from '@/components/ui/button';
import Image from "next/image";
import Image from 'next/image';
import { useEffect, useState } from 'react';
import { fetchEmailsRaw, RawEmailResponse } from '../hooks/useGmailClient';
import { fetchEmailList } from '../hooks/useGmailClient';
Expand All @@ -12,6 +12,7 @@ import { useCreateBlueprintStore } from '../create/[id]/store';
import { testBlueprint } from '@zk-email/sdk';
import { useRouter, usePathname, useSearchParams } from 'next/navigation';
import Loader from '@/components/ui/loader';
import { decodeMimeEncodedText } from '@/lib/utils';

type Email = RawEmailResponse & {
valid: boolean;
Expand Down Expand Up @@ -113,7 +114,7 @@ const SelectEmails = ({ id }: { id: string }) => {
setIsFetchEmailLoading(true);
const emailListResponse = await fetchEmailList(googleAuthToken.access_token, {
pageToken: pageToken,
q: blueprint?.props.emailQuery,
// q: blueprint?.props.emailQuery,
});

const emailResponseMessages = emailListResponse.messages;
Expand All @@ -127,7 +128,7 @@ const SelectEmails = ({ id }: { id: string }) => {
const validationResult = await handleValidateEmail(email.decodedContents);
return {
...email,
valid: validationResult ?? false,
valid: true ?? false,
};
})
);
Expand Down Expand Up @@ -158,7 +159,7 @@ const SelectEmails = ({ id }: { id: string }) => {
const renderEmailsTable = () => {
if (isFetchEmailLoading) {
return (
<div className="mt-6 w-full flex justify-center">
<div className="mt-6 flex w-full justify-center">
<Loader />
</div>
);
Expand All @@ -173,7 +174,7 @@ const SelectEmails = ({ id }: { id: string }) => {
}

return (
(<div className="mt-6 w-full">
<div className="mt-6 w-full">
<div className="grid w-full">
{/* Header */}
<div
Expand Down Expand Up @@ -224,26 +225,30 @@ const SelectEmails = ({ id }: { id: string }) => {
width={20}
height={20}
style={{
maxWidth: "100%",
height: "auto"
}} />
maxWidth: '100%',
height: 'auto',
}}
/>
) : (
<Image
src="/assets/WarningCircle.svg"
alt="status"
width={20}
height={20}
style={{
maxWidth: "100%",
height: "auto"
}} />
maxWidth: '100%',
height: 'auto',
}}
/>
)}
</div>
<div>
<div>{formatDate(email.internalDate).split(',')[0]}</div>
<div>{formatDate(email.internalDate).split(',')[1]}</div>
</div>
<div className="overflow-hidden text-ellipsis">{email.subject}</div>
<div className="overflow-hidden text-ellipsis">
{decodeMimeEncodedText(email.subject)}
</div>
{/* <div>
<button className="flex items-center gap-1 underline hover:underline">
<Image src="/assets/Eye.svg" alt="view" width={16} height={16} />
Expand All @@ -269,9 +274,10 @@ const SelectEmails = ({ id }: { id: string }) => {
height={16}
className={isFetchEmailLoading ? 'animate-spin' : ''}
style={{
maxWidth: "100%",
height: "auto"
}} />
maxWidth: '100%',
height: 'auto',
}}
/>
Load More Emails
</Button>

Expand All @@ -290,7 +296,7 @@ const SelectEmails = ({ id }: { id: string }) => {
{blueprint?.props.externalInputs ? 'Add Inputs' : 'Create Proof Remotely'}
</Button>
</div>
</div>)
</div>
);
};

Expand Down
27 changes: 27 additions & 0 deletions src/lib/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -18,3 +18,30 @@ export async function getFileContent(file: File): Promise<string> {
reader.readAsText(file);
});
}

export function decodeMimeEncodedText(encodedText: string) {
const matches = encodedText.match(/=\?([^?]+)\?([BQbq])\?([^?]+)\?=/);
if (!matches) return encodedText; // Return as is if no match is found

const charset = matches[1]; // Extract the character set (e.g., UTF-8)
const encoding = matches[2].toUpperCase(); // Encoding type: Q (Quoted-Printable) or B (Base64)
const encodedContent = matches[3];

if (encoding === 'Q') {
// Decode Quoted-Printable
const decoded = encodedContent
.replace(/_/g, ' ') // Replace underscores with spaces
.replace(/=([A-Fa-f0-9]{2})/g, (_, hex) => String.fromCharCode(parseInt(hex, 16))); // Decode =XX to characters
return new TextDecoder(charset).decode(
new Uint8Array([...decoded].map((c) => c.charCodeAt(0)))
);
} else if (encoding === 'B') {
// Decode Base64
const decoded = atob(encodedContent); // Decode Base64
return new TextDecoder(charset).decode(
new Uint8Array([...decoded].map((c) => c.charCodeAt(0)))
);
}

return encodedText; // Return the original text if unhandled encoding
}
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