export type DeliveryInvitationAction =
  | "create_delivery_invitation"
  | "send_delivery_offer"
  | "send_delivery_reminder"
  | "request_new_link"
  | "confirm_delivery_choice"
  | "transfer_to_logistics"
  | "mark_paid_storage"
  | "mark_delivered";

export type DeliveryInvitationPublicState =
  | "awaiting_choice"
  | "opened"
  | "reminder_sent"
  | "transferred_to_logistics"
  | "paid_storage"
  | "delivered"
  | "agreed"
  | "default";

export const DEFAULT_AVAILABLE_SLOTS = ["Первая половина дня", "Вторая половина дня"];

export const getOrderUpdateForDeliveryInvitationAction = (action: DeliveryInvitationAction) => {
  switch (action) {
    case "create_delivery_invitation":
    case "send_delivery_offer":
    case "send_delivery_reminder":
    case "request_new_link":
      return {
        status: "Ожидает ответа клиента",
        deliveryAgreementStatus: "Отправлено клиенту",
      };
    case "confirm_delivery_choice":
      return {
        status: "Доставка согласована",
        deliveryAgreementStatus: "Подтверждено клиентом",
      };
    case "transfer_to_logistics":
      return {
        status: "Передан логисту",
        deliveryAgreementStatus: "Нет ответа",
      };
    case "mark_paid_storage":
      return {
        status: "Платное хранение",
        deliveryAgreementStatus: "Нет ответа",
      };
    case "mark_delivered":
      return {
        status: "Доставлен",
        deliveryAgreementStatus: "Подтверждено клиентом",
      };
    default:
      return null;
  }
};

export const getClientInvitationStateFromOrderStatus = (
  status: string,
): DeliveryInvitationPublicState => {
  switch (status) {
    case "Ожидает ответа клиента":
      return "awaiting_choice";
    case "Ожидает согласования доставки":
      return "opened";
    case "Напоминание отправлено":
    case "Переход отправлен":
      return "reminder_sent";
    case "Передан логисту":
      return "transferred_to_logistics";
    case "Платное хранение":
      return "paid_storage";
    case "Доставлен":
      return "delivered";
    case "Доставка согласована":
      return "agreed";
    default:
      return "default";
  }
};

export const isActiveInvitationState = (state: DeliveryInvitationPublicState) =>
  state === "awaiting_choice" || state === "opened" || state === "reminder_sent";

export const generateInvitationToken = () => crypto.randomUUID().replaceAll("-", "");

export const hashInvitationToken = async (token: string) => {
  const bytes = new TextEncoder().encode(token);
  const digest = await crypto.subtle.digest("SHA-256", bytes);
  return [...new Uint8Array(digest)].map((byte) => byte.toString(16).padStart(2, "0")).join("");
};

export const normalizeAvailableSlots = (availableSlots?: string[] | null) => {
  const slots = availableSlots?.map((slot) => slot.trim()).filter(Boolean) || [];
  return slots.length > 0 ? Array.from(new Set(slots)) : [...DEFAULT_AVAILABLE_SLOTS];
};

export const resolvePublicAppUrl = (
  request: Request,
  fallbackEnv?: string,
) => {
  const origin = request.headers.get("origin") || request.headers.get("referer") || "";
  const envValue =
    fallbackEnv ||
    (typeof Deno !== "undefined" ? Deno.env.get("PUBLIC_APP_URL") || Deno.env.get("APP_PUBLIC_URL") : "");
  return (envValue || origin || "").replace(/\/$/, "");
};

export const buildInvitationUrl = (baseUrl: string, token: string) =>
  `${baseUrl.replace(/\/$/, "")}/delivery/${token}`;