import { Model, InferAttributes, InferCreationAttributes, CreationOptional, NonAttribute, ModelStatic } from "vr-migrations";
import type { Device } from "./device.models";
import type { User } from "./user.models";
import type { Installment } from "./installment.models";
import { Payment } from "./payment.models";
export type PaymentPlanStatus = "PENDING" | "ACTIVE" | "COMPLETED" | "DEFAULTED" | "CANCELLED";
export declare const PAYMENT_PLAN_STATUS: readonly ["PENDING", "ACTIVE", "COMPLETED", "DEFAULTED", "CANCELLED"];
export interface DevicePaymentPlanAttributes {
    id: string;
    userId: string;
    pricingSnapshot: Record<string, any>;
    totalAmount: number;
    paidAmount: number;
    outstandingAmount: number;
    lastPaymentAt: Date | null;
    nextInstallmentDueAt: Date | null;
    status: PaymentPlanStatus;
    completedAt: Date | null;
    createdAt: Date;
    updatedAt: Date;
    devices?: Device[];
    user: User;
    installments?: Installment[];
    payment?: Payment;
}
export interface DevicePaymentPlanCreationAttributes extends Omit<DevicePaymentPlanAttributes, "id" | "createdAt" | "updatedAt" | "paidAmount" | "outstandingAmount" | "totalAmount" | "lastPaymentAt" | "nextInstallmentDueAt" | "status" | "completedAt" | "devices" | "installments"> {
    id?: string;
    paidAmount?: number;
    outstandingAmount?: number;
    totalAmount?: number;
    status?: PaymentPlanStatus;
}
export declare class DevicePaymentPlan extends Model<InferAttributes<DevicePaymentPlan>, InferCreationAttributes<DevicePaymentPlan>> implements DevicePaymentPlanAttributes {
    id: CreationOptional<string>;
    userId: string;
    pricingSnapshot: Record<string, any>;
    totalAmount: CreationOptional<number>;
    paidAmount: CreationOptional<number>;
    outstandingAmount: number;
    lastPaymentAt: CreationOptional<Date | null>;
    nextInstallmentDueAt: CreationOptional<Date | null>;
    status: CreationOptional<PaymentPlanStatus>;
    completedAt: CreationOptional<Date | null>;
    readonly createdAt: CreationOptional<Date>;
    readonly updatedAt: CreationOptional<Date>;
    devices?: NonAttribute<Device[]>;
    user: NonAttribute<User>;
    installments?: NonAttribute<Installment[]>;
    payment?: NonAttribute<Payment>;
    static initialize(sequelize: any): void;
    static associate(models: Record<string, ModelStatic<Model>>): void;
    updateProgress(): Promise<void>;
    markAsDefaulted(): Promise<void>;
    cancel(): Promise<void>;
    calculateProgress(): number;
    getOverdueStatus(): Promise<{
        isOverdue: boolean;
        daysOverdue: number;
    }>;
    shouldAutoLock(): Promise<boolean>;
    getDevices(): Promise<any[]>;
    getInstallments(options?: any): Promise<any[]>;
}
export type DevicePaymentPlanModel = typeof DevicePaymentPlan;