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import { AmountJson, Amounts } from "../amounts.js";
import { HttpRequestLibrary } from "../http-common.js";
import { HttpStatusCode } from "../http-status-codes.js";
import { createPlatformHttpLib } from "../http.js";
import { FailCasesByMethod, ResultByMethod, opKnownFailure, opSuccess, opUnknownFailure } from "../operation.js";
import { TalerErrorCode } from "../taler-error-codes.js";
import { codecForTalerErrorDetail } from "../wallet-types.js";
import {
codecForCashinConversionResponse,
codecForCashoutConversionResponse,
codecForConversionBankConfig
} from "./types.js";
export type TalerBankConversionResultByMethod<prop extends keyof TalerBankConversionHttpClient> = ResultByMethod<TalerBankConversionHttpClient, prop>
export type TalerBankConversionErrorsByMethod<prop extends keyof TalerBankConversionHttpClient> = FailCasesByMethod<TalerBankConversionHttpClient, prop>
/**
* The API is used by the wallets.
*/
export class TalerBankConversionHttpClient {
httpLib: HttpRequestLibrary;
constructor(
readonly baseUrl: string,
httpClient?: HttpRequestLibrary,
) {
this.httpLib = httpClient ?? createPlatformHttpLib();
}
/**
* https://docs.taler.net/core/api-bank-conversion-info.html#get--config
*
*/
async getConfig() {
const url = new URL(`config`, this.baseUrl);
const resp = await this.httpLib.fetch(url.href, {
method: "GET"
});
switch (resp.status) {
case HttpStatusCode.Ok: return opSuccess(resp, codecForConversionBankConfig())
default: return opUnknownFailure(resp, await resp.text())
}
}
/**
* https://docs.taler.net/core/api-bank-conversion-info.html#get--cashin-rate
*
*/
async getCashinRate(conversion: { debit?: AmountJson, credit?: AmountJson }) {
const url = new URL(`cashin-rate`, this.baseUrl);
if (conversion.debit) {
url.searchParams.set("amount_debit", Amounts.stringify(conversion.debit))
}
if (conversion.credit) {
url.searchParams.set("amount_credit", Amounts.stringify(conversion.credit))
}
const resp = await this.httpLib.fetch(url.href, {
method: "GET",
});
switch (resp.status) {
case HttpStatusCode.Ok: return opSuccess(resp, codecForCashinConversionResponse())
case HttpStatusCode.BadRequest: {
const body = await resp.json()
const details = codecForTalerErrorDetail().decode(body)
switch (details.code) {
case TalerErrorCode.GENERIC_PARAMETER_MISSING: return opKnownFailure("missing-params", resp);
case TalerErrorCode.GENERIC_PARAMETER_MALFORMED: return opKnownFailure("wrong-calculation", resp);
case TalerErrorCode.GENERIC_CURRENCY_MISMATCH: return opKnownFailure("wrong-currency", resp);
default: return opUnknownFailure(resp, body)
}
}
case HttpStatusCode.Conflict: return opKnownFailure("amount-too-small", resp);
case HttpStatusCode.NotImplemented: return opKnownFailure("cashout-not-supported", resp);
default: return opUnknownFailure(resp, await resp.text())
}
}
/**
* https://docs.taler.net/core/api-bank-conversion-info.html#get--cashout-rate
*
*/
async getCashoutRate(conversion: { debit?: AmountJson, credit?: AmountJson }) {
const url = new URL(`cashout-rate`, this.baseUrl);
if (conversion.debit) {
url.searchParams.set("amount_debit", Amounts.stringify(conversion.debit))
}
if (conversion.credit) {
url.searchParams.set("amount_credit", Amounts.stringify(conversion.credit))
}
const resp = await this.httpLib.fetch(url.href, {
method: "GET",
});
switch (resp.status) {
case HttpStatusCode.Ok: return opSuccess(resp, codecForCashoutConversionResponse())
case HttpStatusCode.BadRequest: {
const body = await resp.json()
const details = codecForTalerErrorDetail().decode(body)
switch (details.code) {
case TalerErrorCode.GENERIC_PARAMETER_MISSING: return opKnownFailure("missing-params", resp);
case TalerErrorCode.GENERIC_PARAMETER_MALFORMED: return opKnownFailure("wrong-calculation", resp);
case TalerErrorCode.GENERIC_CURRENCY_MISMATCH: return opKnownFailure("wrong-currency", resp);
default: return opUnknownFailure(resp, body)
}
}
case HttpStatusCode.Conflict: return opKnownFailure("amount-too-small", resp);
case HttpStatusCode.NotImplemented: return opKnownFailure("cashout-not-supported", resp);
default: return opUnknownFailure(resp, await resp.text())
}
}
}
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