96 lines
2.8 KiB
Go
96 lines
2.8 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package console
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import (
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"context"
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"time"
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"github.com/zeebo/errs"
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"storj.io/common/uuid"
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"storj.io/storj/private/currency"
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"storj.io/storj/satellite/rewards"
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)
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// NoCreditForUpdateErr is a error message used when no credits are found for update when new users sign up.
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var NoCreditForUpdateErr = errs.Class("no credit found to update")
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// UserCredits holds information to interact with database
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//
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// architecture: Database
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type UserCredits interface {
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GetCreditUsage(ctx context.Context, userID uuid.UUID, expirationEndDate time.Time) (*UserCreditUsage, error)
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Create(ctx context.Context, userCredit CreateCredit) error
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UpdateEarnedCredits(ctx context.Context, userID uuid.UUID) error
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UpdateAvailableCredits(ctx context.Context, creditsToCharge int, id uuid.UUID, billingStartDate time.Time) (remainingCharge int, err error)
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}
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// CreditType indicates a type of a credit.
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type CreditType string
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const (
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// Invitee is a type of credits earned by invitee.
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Invitee CreditType = "invitee"
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// Referrer is a type of credits earned by referrer.
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Referrer CreditType = "referrer"
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)
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// UserCredit holds information about an user's credit.
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type UserCredit struct {
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ID int
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UserID uuid.UUID
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OfferID int
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ReferredBy *uuid.UUID
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Type CreditType
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CreditsEarned currency.USD
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CreditsUsed currency.USD
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ExpiresAt time.Time
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CreatedAt time.Time
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}
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// UserCreditUsage holds information about credit usage information.
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type UserCreditUsage struct {
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Referred int64
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AvailableCredits currency.USD
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UsedCredits currency.USD
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}
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// CreateCredit holds information that's needed when create a new record of user credit.
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type CreateCredit struct {
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OfferInfo rewards.RedeemOffer
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UserID uuid.UUID
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OfferID int
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Type CreditType
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ReferredBy *uuid.UUID
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CreditsEarned currency.USD
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ExpiresAt time.Time
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}
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// NewCredit returns a new credit data.
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func NewCredit(currentReward *rewards.Offer, creditType CreditType, userID uuid.UUID, referrerID *uuid.UUID) (*CreateCredit, error) {
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var creditEarned currency.USD
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switch creditType {
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case Invitee:
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// Invitee will only earn their credit once they have activated their account. Therefore, we set it to 0 on creation
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creditEarned = currency.Cents(0)
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case Referrer:
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creditEarned = currentReward.AwardCredit
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default:
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return nil, errs.New("unsupported credit type")
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}
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return &CreateCredit{
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OfferInfo: rewards.RedeemOffer{
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RedeemableCap: currentReward.RedeemableCap,
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Status: currentReward.Status,
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Type: currentReward.Type,
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},
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UserID: userID,
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OfferID: currentReward.ID,
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ReferredBy: referrerID,
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CreditsEarned: creditEarned,
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ExpiresAt: time.Now().UTC().AddDate(0, 0, currentReward.InviteeCreditDurationDays),
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}, nil
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}
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