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85 lines
3.2 KiB
TypeScript
85 lines
3.2 KiB
TypeScript
import { datasetUrlById } from 'wherehows-web/utils/api/datasets/shared';
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import {
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IDatasetColumn,
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IDatasetColumnsGetResponse,
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IDatasetColumnWithHtmlComments
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} from 'wherehows-web/typings/api/datasets/columns';
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import { getJSON } from 'wherehows-web/utils/api/fetcher';
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import { ApiStatus } from 'wherehows-web/utils/api';
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import { arrayMap } from 'wherehows-web/utils/array';
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// TODO: DSS-6122 Create and move to Error module
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/**
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* default exception string for columns api
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* @type {string}
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*/
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const datasetColumnsException = 'An error occurred with the columns api';
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/**
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* Constructs a dataset column url using a dataset id
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* @param {number} id the id of the dataset
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* @return {string}
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*/
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const datasetColumnUrlById = (id: number): string => `${datasetUrlById(id)}/columns`;
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/**
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* Maps an object with a column prop to an object containing markdown comments, if the dataset has a comment attribute
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* @template T
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* @param {T} objectWithComment
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* @return {T & {commentHtml: string} | {} & T}
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*/
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const augmentWithHtmlComment = <T extends { comment: string }>(objectWithComment: T) => {
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const { comment } = objectWithComment;
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// TODO: DSS-6122 Refactor global function reference to marked
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// not using spread operator here: https://github.com/Microsoft/TypeScript/issues/10727
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// current ts version: 2.5.3
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return Object.assign({}, objectWithComment, comment && { commentHtml: window.marked(comment).htmlSafe() });
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};
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/**
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* Picks out the dataset dataType and fullFieldPath (as fieldName) properties
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* @param {string} dataType string representing the data type of the field
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* @param {string} fullFieldPath the path of the field on this dataset
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* @return {Pick<IDatasetColumn, "dataType" | "fieldName">}
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*/
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const columnDataTypeAndFieldName = ({
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dataType,
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fullFieldPath
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}: IDatasetColumn | IDatasetColumnWithHtmlComments): Pick<IDatasetColumn, 'dataType' | 'fieldName'> => ({
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dataType,
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fieldName: fullFieldPath
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});
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/**
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* Takes a list of objects with comments and returns an array of objects with comments or html comments
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* @type {(array: Array<T extends { comment: string } & Object>) => Array<T | T extends { commentHtml: string }>}
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*/
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const augmentObjectsWithHtmlComments = arrayMap(augmentWithHtmlComment);
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/**
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* Takes a list of IDatasetColumn / IDatasetColumn with html comments and pulls the dataType and and fullFieldPath (as fieldName) attributes
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* @type {(array: Array<IDatasetColumn | IDatasetColumnWithHtmlComments>) => Array<Pick<IDatasetColumn, "dataType" | "fieldName">>}
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*/
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const columnDataTypesAndFieldNames = arrayMap(columnDataTypeAndFieldName);
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/**
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* Gets the dataset columns for a dataset with the id specified
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* @param {number} id the id of the dataset
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* @return {Promise<Array<IDatasetColumn>>}
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*/
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const readDatasetColumns = async (id: number): Promise<Array<IDatasetColumn>> => {
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const { status, columns, message = datasetColumnsException } = await getJSON<IDatasetColumnsGetResponse>({
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url: datasetColumnUrlById(id)
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});
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// Returns an empty list if the status is ok but the columns is falsey
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if (status === ApiStatus.OK) {
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return columns || [];
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}
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throw new Error(message);
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};
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export { readDatasetColumns, columnDataTypesAndFieldNames, augmentObjectsWithHtmlComments, datasetColumnUrlById };
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