import {
  getOrderUpdateForDeliveryInvitationAction,
} from "../_shared/delivery-invitations.ts";
import { createServiceClient } from "../_shared/chatbot.ts";
import { insertIntegrationEvent } from "../_shared/integration-events.ts";

const corsHeaders = {
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Headers": "authorization, x-client-info, apikey, content-type",
};

Deno.serve(async (request) => {
  if (request.method === "OPTIONS") {
    return new Response("ok", { headers: corsHeaders });
  }

  if (request.method !== "POST") {
    return new Response(JSON.stringify({ error: "Method not allowed" }), {
      status: 405,
      headers: {
        ...corsHeaders,
        "Content-Type": "application/json",
      },
    });
  }

  try {
    const body = (await request.json()) as {
      orderId?: string;
      result?: "delivered" | "problem";
      note?: string;
      payload?: Record<string, unknown>;
    };

    if (!body.orderId) {
      return new Response(JSON.stringify({ error: "orderId is required" }), {
        status: 400,
        headers: {
          ...corsHeaders,
          "Content-Type": "application/json",
        },
      });
    }

    const supabase = createServiceClient();
    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 new Response(
      JSON.stringify({
        ok: true,
        orderId: body.orderId,
        status: nextStatus,
        deliveryAgreementStatus: isDelivered
          ? "Подтверждено клиентом"
          : body.note || currentOrder.delivery_agreement_status || "Ошибка отправки",
        workflowStatus: nextStatus,
      }),
      {
        headers: {
          ...corsHeaders,
          "Content-Type": "application/json",
        },
      },
    );
  } catch (error) {
    return new Response(
      JSON.stringify({
        ok: false,
        error: error instanceof Error ? error.message : "Unexpected error",
      }),
      {
        status: 500,
        headers: {
          ...corsHeaders,
          "Content-Type": "application/json",
        },
      },
    );
  }
});