Created
September 3, 2024 14:40
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Implementation of adapter pattern with Factory (optional)
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| type CustomInfo = { | |
| name: string; | |
| email: string; | |
| phoneNumber: string; | |
| }; | |
| interface CreditManagerSystem { | |
| getCreditLimitForCustomer(customerId: string): number; | |
| getCustomerInfo(customerId: string): CustomInfo; | |
| } | |
| class SGCredAdapter implements CreditManagerSystem { | |
| getCreditLimitForCustomer(customerId: string): number { | |
| return 1000; | |
| } | |
| getCustomerInfo(customerId: string): CustomInfo { | |
| return { | |
| email: "customer@sgcred.com.br", | |
| name: "Customer from SGCred", | |
| phoneNumber: "123456789" | |
| } | |
| } | |
| } | |
| class BetaAdapter implements CreditManagerSystem { | |
| getCreditLimitForCustomer(customerId: string): number { | |
| return 5001; | |
| } | |
| getCustomerInfo(customerId: string): CustomInfo { | |
| return { | |
| email: "customer@beta.com.br", | |
| name: "Customer from Beta™", | |
| phoneNumber: "999999999" | |
| } | |
| } | |
| } | |
| class CustomerService { | |
| constructor(private readonly creditManager: CreditManagerSystem) {} | |
| getLimit(customerId: string): number { | |
| return this.creditManager.getCreditLimitForCustomer(customerId); | |
| } | |
| getInfo(customerId: string): CustomInfo { | |
| return this.creditManager.getCustomerInfo(customerId); | |
| } | |
| } | |
| class CreditManagerFactory { | |
| static create(type: "sgcred" | "beta"): CreditManagerSystem { | |
| switch (type) { | |
| case "sgcred": | |
| return new SGCredAdapter(); | |
| case "beta": | |
| return new BetaAdapter(); | |
| default: | |
| throw new Error("Invalid type"); | |
| } | |
| } | |
| } | |
| const creditManagerSystem = CreditManagerFactory.create("beta"); | |
| const customerService = new CustomerService(creditManagerSystem); | |
| console.log(customerService.getInfo("123")); | |
| console.log(customerService.getLimit("123")); // 5001 |
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