import { NextRequest, NextResponse } from "next/server";
import { auth } from "@/auth";
import { getMailboxes, createMailbox, setupMailboxForwarding } from "@/lib/mailcow";
import { canAccessDomain } from "@/lib/users";
import { prisma } from "@/lib/prisma";

// GET /api/mailboxes?domain=example.com
export async function GET(req: NextRequest) {
  // ... existing GET ...
  const session = await auth();
  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });

  const domain = req.nextUrl.searchParams.get("domain");
  if (!domain) return NextResponse.json({ error: "domain parametresi gerekli" }, { status: 400 });

  if (!canAccessDomain(session.user.domains ?? [], domain)) {
    return NextResponse.json({ error: "Bu domaine erişim yetkiniz yok" }, { status: 403 });
  }

  const mailboxes = await getMailboxes(domain);
  return NextResponse.json(mailboxes);
}

// POST /api/mailboxes
export async function POST(req: NextRequest) {
  const session = await auth();
  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });

  const body = await req.json();
  const { local_part, domain, name, password, quota } = body;
  const fullEmail = `${local_part}@${domain}`;

  if (!local_part || !domain || !name || !password) {
    return NextResponse.json({ error: "Eksik alan" }, { status: 400 });
  }

  if (!canAccessDomain(session.user.domains ?? [], domain)) {
    return NextResponse.json({ error: "Bu domaine erişim yetkiniz yok" }, { status: 403 });
  }

  // 1. Create Mailbox in Mailcow
  const result = await createMailbox({ local_part, domain, name, password, quota });
  
  if (!result.ok) {
    // Log failure to SystemLog
    try {
      await prisma.systemLog.create({
        data: {
          level: "ERROR",
          message: `Mailbox creation failed: ${fullEmail}`,
          details: JSON.stringify(result.data),
        },
      });
    } catch (e) {
      console.error("[SystemLog] Failed to log error", e);
    }
    return NextResponse.json(result.data, { status: 502 });
  }

  // 2. Automated "One-Click" Setup: Create Forwarding to Webhook
  const webhookUrl = `${req.nextUrl.origin}/api/webhooks/mail`;
  console.log(`[Setup] Setting up auto-forwarding for ${fullEmail} to ${webhookUrl}`);
  
  const setupResult = await setupMailboxForwarding(fullEmail, webhookUrl);
  
  if (!setupResult.ok) {
    console.error(`[Setup] Failed to setup auto-forwarding for ${fullEmail}`);
    try {
      await prisma.systemLog.create({
        data: {
          level: "WARN",
          message: `Auto-forwarding setup failed for ${fullEmail}`,
          details: JSON.stringify(setupResult.data),
        },
      });
    } catch (e) {
      console.error("[SystemLog] Failed to log warning", e);
    }
    // We still return success for mailbox creation, but maybe with a warning header/prop
    return NextResponse.json({ 
      ...result.data, 
      setup_warning: "Bildirim kurulumu otomatik yapılamadı, lütfen manuel kontrol edin." 
    });
  }

  // Log success
  try {
    await prisma.systemLog.create({
      data: {
        level: "INFO",
        message: `Mailbox created and notification setup completed: ${fullEmail}`,
      },
    });
  } catch (e) {
    console.error("[SystemLog] Failed to log success", e);
  }

  return NextResponse.json(result.data);
}