${escapeHtml(title)}

export type NewsletterEmailTemplate = { subject: string; textBody: string; htmlBody: string; }; type ConfirmTemplateInput = { label: string; confirmUrl: string; unsubscribeUrl: string; }; type ManageTemplateInput = { label: string; manageUrl: string; expiresHours: number; }; type AdminLoginTemplateInput = { loginUrl: string; expiresMinutes: number; }; function escapeHtml(value: string): string { return value.replace(/[&<>"']/g, (char) => { switch (char) { case '&': return '&'; case '<': return '<'; case '>': return '>'; case '"': return '"'; case "'": return '''; default: return char; } }); } function renderLayout({ title, preheader, content }: { title: string; preheader: string; content: string; }): string { return ` ${escapeHtml(title)}

${content}

If you did not request this, you can ignore this email.

`; } export function buildConfirmEmail({ label, confirmUrl, unsubscribeUrl }: ConfirmTemplateInput): NewsletterEmailTemplate { const subject = `Confirm your ${label} subscription`; const textBody = `Confirm your ${label} subscription:\n\n${confirmUrl}\n\nIf you did not request this, you can ignore this email.\n\nUnsubscribe:\n${unsubscribeUrl}`; const content = `

You are almost subscribed to ${escapeHtml(label)} updates.

Confirm subscription

Unsubscribe

`; const htmlBody = renderLayout({ title: `Confirm your ${label} subscription`, preheader: subject, content }); return { subject, textBody, htmlBody }; } export function buildManageEmail({ label, manageUrl, expiresHours }: ManageTemplateInput): NewsletterEmailTemplate { const subject = `Manage your ${label} subscriptions`; const textBody = `Use this secure link to manage your ${label} subscriptions:\n\n${manageUrl}\n\nThis link expires in ${expiresHours} hours.`; const content = `

Use this secure link to manage your ${escapeHtml(label)} subscriptions.

Manage subscriptions

This link expires in ${expiresHours} hours.

`; const htmlBody = renderLayout({ title: `Manage your ${label} subscriptions`, preheader: subject, content }); return { subject, textBody, htmlBody }; } export function buildAdminLoginEmail({ loginUrl, expiresMinutes }: AdminLoginTemplateInput): NewsletterEmailTemplate { const subject = 'Your CULTSCALE admin login link'; const textBody = `Use this secure link to access the CULTSCALE admin dashboard:\n\n${loginUrl}\n\nThis link expires in ${expiresMinutes} minutes.`; const content = `

Use this secure link to access the CULTSCALE admin dashboard.

Open admin dashboard

This link expires in ${expiresMinutes} minutes.

`; const htmlBody = renderLayout({ title: 'Admin login', preheader: subject, content }); return { subject, textBody, htmlBody }; }