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| class Wallet { | |
| constructor (patient, currency) { | |
| this.patient = patient; | |
| this.currency = currency; | |
| } | |
| async getBalanceAsync () { | |
| // sum `amount` aggregation with patient and currency filter | |
| return 0; | |
| } | |
| async addTransaction ({ type: any, amount: number, description: string: metadata?: any }) { | |
| const currentBalance = await getBalanceAsync(); | |
| if ((currentBalance + amount) < 0) { | |
| return Promise.reject(new Error("insufficient balance")); | |
| } | |
| let transaction = new WalletTransaction ({ | |
| patient: this.patient, | |
| currency: this.currency, | |
| // balance: currentBalance + amount, | |
| amount, | |
| description, | |
| type, | |
| metatada, | |
| }); | |
| return transaction.save(); | |
| } | |
| async execDeposit ({ amount: number, description: string, metadata?: any }) { | |
| return this.addTransaction({ | |
| type: "deposit", | |
| description: description, | |
| metadata, | |
| amount | |
| }); | |
| } | |
| async execRefund ({ amount: number, description: string, metadata?: any }) { | |
| return this.addTransaction({ | |
| type: "refund", | |
| description: description, | |
| metadata, | |
| amount: amount | |
| }); | |
| } | |
| async execPayment ({ amount: number, description: string, metadata?: any }) { | |
| return this.addTransaction({ | |
| type: "payment", | |
| description: description, | |
| metadata, | |
| amount: amount * -1 | |
| }); | |
| } | |
| async addCashback ({ amount: number, description: string, metadata?: any }) { | |
| return this.addTransaction({ | |
| type: "cashback", | |
| description: description, | |
| metadata, | |
| amount: amount | |
| }); | |
| } | |
| } |
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