/* Generic text-only send over the same Cloudflare Email Sending REST call —
   used by /api/notify for the launch-notification confirmation. Single-shot,
   honest { sent: false } on any failure; no retry. */
export async function sendMail(to: string, subject: string, text: string): Promise<{ sent: boolean }> {
  const apiToken = process.env.CLOUDFLARE_API_TOKEN
  const accountId = process.env.CLOUDFLARE_ACCOUNT_ID
  if (!apiToken || !accountId) return { sent: false }

  try {
    const res = await fetch(`https://api.cloudflare.com/client/v4/accounts/${accountId}/email/sending/send`, {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${apiToken}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        to,
        from: { address: process.env.MAIL_FROM ?? 'noreply@anwarpy.ai', name: 'أنور بي آي' },
        subject,
        text,
      }),
    })

    if (!res.ok) {
      console.error('cloudflare email sending failed:', res.status, await res.text())
      return { sent: false }
    }
    const json = (await res.json()) as { success?: boolean }
    if (!json.success) {
      console.error('cloudflare email sending rejected:', JSON.stringify(json))
      return { sent: false }
    }
    return { sent: true }
  } catch (err) {
    console.error('cloudflare email sending threw:', err)
    return { sent: false }
  }
}

/* Cloudflare Email Sending (REST) — activates only when CLOUDFLARE_API_TOKEN
   and CLOUDFLARE_ACCOUNT_ID are set. Without them, sendVerificationEmail
   returns { sent: false } and the UI degrades to a clear status message; the
   flow itself never breaks. Single-shot: no retry (resend route re-invokes). */
export async function sendVerificationEmail(to: string, token: string): Promise<{ sent: boolean }> {
  const apiToken = process.env.CLOUDFLARE_API_TOKEN
  const accountId = process.env.CLOUDFLARE_ACCOUNT_ID
  if (!apiToken || !accountId) return { sent: false }

  const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'http://localhost:3000'
  const link = `${siteUrl}/api/auth/verify-email?token=${encodeURIComponent(token)}`

  try {
    const res = await fetch(`https://api.cloudflare.com/client/v4/accounts/${accountId}/email/sending/send`, {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${apiToken}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        to,
        from: { address: process.env.MAIL_FROM ?? 'noreply@anwarpy.ai', name: 'أنور بي آي' },
        subject: 'أكد بريدك — أنور بي آي',
        html: `<p>مرحباً بك في أنور بي آي.</p>
<p>أكّد بريدك بفتح هذا الرابط:</p>
<p><a href="${link}">${link}</a></p>
<p>إن لم تطلب هذا الحساب، تجاهل هذه الرسالة.</p>`,
        text: `مرحباً بك في أنور بي آي.\n\nأكّد بريدك بفتح هذا الرابط:\n${link}\n\nإن لم تطلب هذا الحساب، تجاهل هذه الرسالة.`,
      }),
    })

    if (!res.ok) {
      console.error('cloudflare email sending failed:', res.status, await res.text())
      return { sent: false }
    }
    const json = (await res.json()) as { success?: boolean }
    if (!json.success) {
      console.error('cloudflare email sending rejected:', JSON.stringify(json))
      return { sent: false }
    }
    return { sent: true }
  } catch (err) {
    console.error('cloudflare email sending threw:', err)
    return { sent: false }
  }
}