import { NextRequest, NextResponse } from "next/server";
import { accountService } from "@/services/account.service";
import { bankingService } from "@/services/banking.service";
import { requireAuth } from "@/lib/auth-utils";
import type { Account } from "@/lib/types";

export async function GET(request: NextRequest) {
  const authError = await requireAuth();
  if (authError) return authError;

  try {
    const { searchParams } = new URL(request.url);
    const withStats = searchParams.get("withStats") === "true";

    if (withStats) {
      const accountsWithStats = await bankingService.getAccountsWithStats();
      return NextResponse.json(accountsWithStats, {
        headers: {
          "Cache-Control": "public, s-maxage=60, stale-while-revalidate=120",
        },
      });
    }

    return NextResponse.json({ error: "Invalid request" }, { status: 400 });
  } catch (error) {
    console.error("Error fetching accounts:", error);
    return NextResponse.json(
      { error: "Failed to fetch accounts" },
      { status: 500 },
    );
  }
}

export async function POST(request: Request) {
  const authError = await requireAuth();
  if (authError) return authError;

  try {
    const data: Omit<Account, "id"> = await request.json();
    const created = await accountService.create(data);
    return NextResponse.json(created);
  } catch (error) {
    console.error("Error creating account:", error);
    return NextResponse.json(
      { error: "Failed to create account" },
      { status: 500 },
    );
  }
}

export async function PUT(request: Request) {
  const authError = await requireAuth();
  if (authError) return authError;

  try {
    const account: Account = await request.json();
    const updated = await accountService.update(account.id, account);
    return NextResponse.json(updated);
  } catch (error) {
    console.error("Error updating account:", error);
    return NextResponse.json(
      { error: "Failed to update account" },
      { status: 500 },
    );
  }
}

export async function DELETE(request: Request) {
  const authError = await requireAuth();
  if (authError) return authError;

  try {
    const { searchParams } = new URL(request.url);
    const id = searchParams.get("id");
    const ids = searchParams.get("ids");

    if (ids) {
      // Multiple deletion
      const accountIds = ids.split(",").filter(Boolean);
      if (accountIds.length === 0) {
        return NextResponse.json(
          { error: "At least one account ID is required" },
          { status: 400 },
        );
      }
      await accountService.deleteMany(accountIds);
      return NextResponse.json({ success: true, count: accountIds.length });
    }

    if (!id) {
      return NextResponse.json(
        { error: "Account ID is required" },
        { status: 400 },
      );
    }

    await accountService.delete(id);
    return NextResponse.json({ success: true });
  } catch (error) {
    console.error("Error deleting account:", error);
    return NextResponse.json(
      { error: "Failed to delete account" },
      { status: 500 },
    );
  }
}