import { getOrderUpdateForDeliveryInvitationAction } from "../_shared/delivery-invitations.ts";
import { requireUuid } from "../_shared/security.ts";
import { createServiceClient } from "../_shared/chatbot.ts";
import { insertIntegrationEvent } from "../_shared/integration-events.ts";
import {
  getCorsHeaders,
  jsonResponse,
  readJsonBody,
  requireRateLimit,
  verifyInternalRequest,
} from "../_shared/security.ts";

const MAX_BODY_BYTES = 16 * 1024;

type ReportBody = {
  orderId?: string;
  result?: "delivered" | "problem";
  note?: string;
  payload?: Record<string, unknown>;
};

Deno.serve(async (request) => {
  if (request.method === "OPTIONS") {
    const corsHeaders = getCorsHeaders(request, "integration");
    return corsHeaders ? new Response("ok", { headers: corsHeaders }) : jsonResponse({ error: "Origin not allowed" }, 403);
  }

  if (request.method !== "POST") {
    return jsonResponse({ error: "Method not allowed" }, 405);
  }

  const corsHeaders = getCorsHeaders(request, "integration") || {};

  try {
    const { body, rawBody } = await readJsonBody<ReportBody>(request, {
      maxBytes: MAX_BODY_BYTES,
    });
    await verifyInternalRequest(request, rawBody, { rawBody });

    if (!body.orderId) {
      return jsonResponse({ error: "orderId is required" }, 400, corsHeaders);
    }

    try {
      requireUuid(body.orderId, "orderId");
    } catch (e) {
      return jsonResponse({ ok: false, error: (e as Error).message }, 400, corsHeaders);
    }

    const supabase = createServiceClient();
    await requireRateLimit(supabase, {
      scope: "delivery-report",
      key: body.orderId,
      maxCount: 10,
      windowSeconds: 600,
      blockSeconds: 1800,
    });

    const { data: currentOrder, error: orderError } = await supabase
      .from("orders")
      .select("id, status, delivery_agreement_status")
      .eq("id", body.orderId)
      .single();

    if (orderError) {
      throw orderError;
    }

    const isDelivered = body.result === "delivered";
    const action = isDelivered ? "mark_delivered" : "mark_paid_storage";
    const orderUpdate = getOrderUpdateForDeliveryInvitationAction(action);
    const nextStatus = isDelivered ? orderUpdate?.status || "Доставлен" : "Проблема доставки";

    const { error: invitationError } = await supabase
      .from("delivery_invitations")
      .update({
        state: isDelivered ? "delivered" : "paid_storage",
        ...(isDelivered ? { delivered_at: new Date().toISOString() } : { paid_storage_at: new Date().toISOString() }),
      })
      .eq("order_id", body.orderId);

    if (invitationError) {
      throw invitationError;
    }

    const { error: updateError } = await supabase
      .from("orders")
      .update({
        status: nextStatus,
        delivery_agreement_status: isDelivered
          ? "Подтверждено клиентом"
          : body.note || currentOrder.delivery_agreement_status || "Ошибка отправки",
      })
      .eq("id", body.orderId);

    if (updateError) {
      throw updateError;
    }

    const { error: historyError } = await supabase.from("order_history").insert({
      order_id: body.orderId,
      action: isDelivered ? "Подтверждение доставки" : "Фиксация проблемы доставки",
      old_status: currentOrder.status,
      new_status: isDelivered ? "Доставлен" : "Проблема доставки",
      metadata: {
        old_delivery_agreement_status: currentOrder.delivery_agreement_status,
        new_delivery_agreement_status: isDelivered
          ? "Подтверждено клиентом"
          : body.note || currentOrder.delivery_agreement_status || "Ошибка отправки",
        payload: body.payload || {},
      },
    });

    if (historyError) {
      throw historyError;
    }

    await insertIntegrationEvent(supabase, {
      order_id: body.orderId,
      event_type: isDelivered ? "delivery_result_delivered" : "delivery_result_problem",
      direction: "internal",
      status: "success",
      payload: {
        result: body.result || null,
        note: body.note || null,
        payload: body.payload || {},
      },
    });

    return jsonResponse(
      {
        ok: true,
        orderId: body.orderId,
        status: nextStatus,
        deliveryAgreementStatus: isDelivered
          ? "Подтверждено клиентом"
          : body.note || currentOrder.delivery_agreement_status || "Ошибка отправки",
        workflowStatus: nextStatus,
      },
      200,
      corsHeaders,
    );
  } catch (error) {
    if (error instanceof Error && "status" in error) {
      const httpError = error as { status: number; message: string };
      return jsonResponse({ ok: false, error: httpError.message }, httpError.status, corsHeaders);
    }

    return jsonResponse(
      {
        ok: false,
        error: error instanceof Error ? error.message : "Unexpected error",
      },
      500,
      corsHeaders,
    );
  }
});