/** * Resend transactional email sender. * * Mirrors the shape of `src/lib/sms/aliyun.ts` so the auth layer can treat * both channels uniformly. * * Docs: https://resend.com/docs/api-reference/emails/send-email */ const apiKey = process.env.RESEND_API_KEY || '' const fromAddress = process.env.RESEND_FROM || 'Forge ' const appName = process.env.RESEND_APP_NAME || 'Forge' export interface EmailResult { success: boolean messageId?: string error?: string } export type OTPType = 'sign-in' | 'email-verification' | 'forget-password' | 'change-email' function subjectFor(type: OTPType): string { switch (type) { case 'sign-in': return `Your ${appName} sign-in code` case 'email-verification': return `Verify your email for ${appName}` case 'forget-password': return `Reset your ${appName} password` case 'change-email': return `Confirm your new ${appName} email` } } function purposeLine(type: OTPType): string { switch (type) { case 'sign-in': return `Use the code below to sign in to ${appName}.` case 'email-verification': return `Use the code below to verify your email address.` case 'forget-password': return `Use the code below to reset your password.` case 'change-email': return `Use the code below to confirm your new email address.` } } function renderHtml(otp: string, type: OTPType): string { return `

${appName}

${purposeLine(type)}

${otp}

This code expires in 5 minutes. If you didn't request it, you can safely ignore this email.

` } function renderText(otp: string, type: OTPType): string { return `${purposeLine(type)}\n\nCode: ${otp}\n\nThis code expires in 5 minutes. If you didn't request it, you can safely ignore this email.` } /** * Send a one-time password to the given email via Resend. */ export async function sendResendOTP( email: string, otp: string, type: OTPType, ): Promise { if (!apiKey) { return { success: false, error: 'Resend 未配置：请设置 RESEND_API_KEY' } } try { const response = await fetch('https://api.resend.com/emails', { method: 'POST', headers: { Authorization: `Bearer ${apiKey}`, 'Content-Type': 'application/json', }, body: JSON.stringify({ from: fromAddress, to: [email], subject: subjectFor(type), html: renderHtml(otp, type), text: renderText(otp, type), }), }) const data = (await response.json().catch(() => null)) as { id?: string; message?: string; name?: string } | null if (!response.ok) { const message = data?.message || data?.name || `Resend HTTP ${response.status}` console.error('Resend 邮件发送失败:', data) return { success: false, error: message } } return { success: true, messageId: data?.id } } catch (error) { console.error('发送 Resend 邮件失败:', error) return { success: false, error: error instanceof Error ? error.message : '未知错误', } } }