// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.

package payments

import (
	"context"
	"time"

	"github.com/zeebo/errs"

	"storj.io/common/uuid"
)

// ErrAccountNotSetup is an error type which indicates that payment account is not created.
var ErrAccountNotSetup = errs.Class("payment account is not set up")

// Accounts exposes all needed functionality to manage payment accounts.
//
// architecture: Service
type Accounts interface {
	// Setup creates a payment account for the user.
	// If account is already set up it will return nil.
	Setup(ctx context.Context, userID uuid.UUID, email string, signupPromoCode string) (CouponType, error)

	// Balance returns an object that represents current free credits and coins balance in cents.
	Balance(ctx context.Context, userID uuid.UUID) (Balance, error)

	// ProjectCharges returns how much money current user will be charged for each project.
	ProjectCharges(ctx context.Context, userID uuid.UUID, since, before time.Time) ([]ProjectCharge, error)

	// GetProjectUsagePriceModel returns the project usage price model for a partner name.
	GetProjectUsagePriceModel(partner string) ProjectUsagePriceModel

	// CheckProjectInvoicingStatus returns error if for the given project there are outstanding project records and/or usage
	// which have not been applied/invoiced yet (meaning sent over to stripe).
	CheckProjectInvoicingStatus(ctx context.Context, projectID uuid.UUID) error

	// CheckProjectUsageStatus returns error if for the given project there is some usage for current or previous month.
	CheckProjectUsageStatus(ctx context.Context, projectID uuid.UUID) error

	// Charges returns list of all credit card charges related to account.
	Charges(ctx context.Context, userID uuid.UUID) ([]Charge, error)

	// CreditCards exposes all needed functionality to manage account credit cards.
	CreditCards() CreditCards

	// StorjTokens exposes all storj token related functionality.
	StorjTokens() StorjTokens

	// Invoices exposes all needed functionality to manage account invoices.
	Invoices() Invoices

	// Coupons exposes all needed functionality to manage coupons.
	Coupons() Coupons
}