import { NextRequest, NextResponse } from "next/server";
import { revalidatePath } from "next/cache";
import { transactionService } from "@/services/transaction.service";
import { requireAuth } from "@/lib/auth-utils";

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

  try {
    const body = await request.json();
    const { startDate, endDate, reconciled = true } = body;

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

    // Validate date format (YYYY-MM-DD)
    const dateRegex = /^\d{4}-\d{2}-\d{2}$/;
    if (startDate && !dateRegex.test(startDate)) {
      return NextResponse.json(
        { error: "Invalid startDate format. Expected YYYY-MM-DD" },
        { status: 400 },
      );
    }
    if (!dateRegex.test(endDate)) {
      return NextResponse.json(
        { error: "Invalid endDate format. Expected YYYY-MM-DD" },
        { status: 400 },
      );
    }

    if (startDate && startDate > endDate) {
      return NextResponse.json(
        { error: "startDate must be before or equal to endDate" },
        { status: 400 },
      );
    }

    const result = await transactionService.reconcileByDateRange(
      startDate,
      endDate,
      reconciled,
    );

    // Revalider le cache des pages
    revalidatePath("/transactions", "page");
    revalidatePath("/statistics", "page");
    revalidatePath("/dashboard", "page");
    revalidatePath("/settings", "page");

    return NextResponse.json(result, {
      headers: {
        "Cache-Control": "no-store",
      },
    });
  } catch (error) {
    console.error("Error reconciling transactions by date range:", error);
    const errorMessage =
      error instanceof Error
        ? error.message
        : "Failed to reconcile transactions";
    return NextResponse.json({ error: errorMessage }, { status: 500 });
  }
}