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Diffstat (limited to 'packages/merchant-backoffice-ui/src/hooks/transfer.ts')
| -rw-r--r-- | packages/merchant-backoffice-ui/src/hooks/transfer.ts | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/packages/merchant-backoffice-ui/src/hooks/transfer.ts b/packages/merchant-backoffice-ui/src/hooks/transfer.ts new file mode 100644 index 000000000..0c12d6d4d --- /dev/null +++ b/packages/merchant-backoffice-ui/src/hooks/transfer.ts @@ -0,0 +1,217 @@ +/* + This file is part of GNU Taler + (C) 2021 Taler Systems S.A. + + GNU Taler is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ +import { MerchantBackend } from "../declaration"; +import { useBackendContext } from "../context/backend"; +import { + request, + HttpResponse, + HttpError, + HttpResponseOk, + HttpResponsePaginated, + useMatchMutate, +} from "./backend"; +import useSWR from "swr"; +import { useInstanceContext } from "../context/instance"; +import { MAX_RESULT_SIZE, PAGE_SIZE } from "../utils/constants"; +import { useEffect, useState } from "preact/hooks"; + +async function transferFetcher<T>( + url: string, + token: string, + backend: string, + payto_uri?: string, + verified?: string, + position?: string, + delta?: number +): Promise<HttpResponseOk<T>> { + const params: any = {}; + if (payto_uri !== undefined) params.payto_uri = payto_uri; + if (verified !== undefined) params.verified = verified; + if (delta !== undefined) { + params.limit = delta; + } + if (position !== undefined) params.offset = position; + + return request<T>(`${backend}${url}`, { token, params }); +} + +export function useTransferAPI(): TransferAPI { + const mutateAll = useMatchMutate(); + const { url: baseUrl, token: adminToken } = useBackendContext(); + const { token: instanceToken, id, admin } = useInstanceContext(); + + const { url, token } = !admin + ? { + url: baseUrl, + token: adminToken, + } + : { + url: `${baseUrl}/instances/${id}`, + token: instanceToken, + }; + + const informTransfer = async ( + data: MerchantBackend.Transfers.TransferInformation + ): Promise< + HttpResponseOk<MerchantBackend.Transfers.MerchantTrackTransferResponse> + > => { + const res = await request<MerchantBackend.Transfers.MerchantTrackTransferResponse>( + `${url}/private/transfers`, { + method: "post", + token, + data, + }); + + await mutateAll(/.*private\/transfers.*/); + return res + }; + + return { informTransfer }; +} + +export interface TransferAPI { + informTransfer: ( + data: MerchantBackend.Transfers.TransferInformation + ) => Promise< + HttpResponseOk<MerchantBackend.Transfers.MerchantTrackTransferResponse> + >; +} + +export interface InstanceTransferFilter { + payto_uri?: string; + verified?: "yes" | "no"; + position?: string; +} + +export function useInstanceTransfers( + args?: InstanceTransferFilter, + updatePosition?: (id: string) => void +): HttpResponsePaginated<MerchantBackend.Transfers.TransferList> { + const { url: baseUrl, token: baseToken } = useBackendContext(); + const { token: instanceToken, id, admin } = useInstanceContext(); + + const { url, token } = !admin + ? { url: baseUrl, token: baseToken } + : { url: `${baseUrl}/instances/${id}`, token: instanceToken }; + + const [pageBefore, setPageBefore] = useState(1); + const [pageAfter, setPageAfter] = useState(1); + + const totalAfter = pageAfter * PAGE_SIZE; + const totalBefore = args?.position !== undefined ? pageBefore * PAGE_SIZE : 0; + + /** + * FIXME: this can be cleaned up a little + * + * the logic of double query should be inside the orderFetch so from the hook perspective and cache + * is just one query and one error status + */ + const { + data: beforeData, + error: beforeError, + isValidating: loadingBefore, + } = useSWR<HttpResponseOk<MerchantBackend.Transfers.TransferList>, HttpError>( + [ + `/private/transfers`, + token, + url, + args?.payto_uri, + args?.verified, + args?.position, + totalBefore, + ], + transferFetcher + ); + const { + data: afterData, + error: afterError, + isValidating: loadingAfter, + } = useSWR<HttpResponseOk<MerchantBackend.Transfers.TransferList>, HttpError>( + [ + `/private/transfers`, + token, + url, + args?.payto_uri, + args?.verified, + args?.position, + -totalAfter, + ], + transferFetcher + ); + + //this will save last result + const [lastBefore, setLastBefore] = useState< + HttpResponse<MerchantBackend.Transfers.TransferList> + >({ loading: true }); + const [lastAfter, setLastAfter] = useState< + HttpResponse<MerchantBackend.Transfers.TransferList> + >({ loading: true }); + useEffect(() => { + if (afterData) setLastAfter(afterData); + if (beforeData) setLastBefore(beforeData); + }, [afterData, beforeData]); + + if (beforeError) return beforeError; + if (afterError) return afterError; + + // if the query returns less that we ask, then we have reach the end or beginning + const isReachingEnd = afterData && afterData.data.transfers.length < totalAfter; + const isReachingStart = args?.position === undefined || + (beforeData && beforeData.data.transfers.length < totalBefore); + + const pagination = { + isReachingEnd, + isReachingStart, + loadMore: () => { + if (!afterData || isReachingEnd) return; + if (afterData.data.transfers.length < MAX_RESULT_SIZE) { + setPageAfter(pageAfter + 1); + } else { + const from = + `${afterData.data + .transfers[afterData.data.transfers.length - 1] + .transfer_serial_id}`; + if (from && updatePosition) updatePosition(from); + } + }, + loadMorePrev: () => { + if (!beforeData || isReachingStart) return; + if (beforeData.data.transfers.length < MAX_RESULT_SIZE) { + setPageBefore(pageBefore + 1); + } else if (beforeData) { + const from = + `${beforeData.data + .transfers[beforeData.data.transfers.length - 1] + .transfer_serial_id}`; + if (from && updatePosition) updatePosition(from); + } + }, + }; + + const transfers = + !beforeData || !afterData + ? [] + : (beforeData || lastBefore).data.transfers + .slice() + .reverse() + .concat((afterData || lastAfter).data.transfers); + if (loadingAfter || loadingBefore) + return { loading: true, data: { transfers } }; + if (beforeData && afterData) { + return { ok: true, data: { transfers }, ...pagination }; + } + return { loading: true }; +} |