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x-pack/plugins/ui_actions_enhanced/public/drilldowns/url_drilldown/handlebars.ts
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| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License | ||
| * 2.0; you may not use this file except in compliance with the Elastic License | ||
| * 2.0. | ||
| */ | ||
|
|
||
| import { create as createHandlebars, HelperDelegate, HelperOptions } from 'handlebars'; | ||
| import { encode, RisonValue } from 'rison-node'; | ||
| import dateMath from '@elastic/datemath'; | ||
| import moment, { Moment } from 'moment'; | ||
| import numeral from '@elastic/numeral'; | ||
| import { url } from '../../../../../../src/plugins/kibana_utils/public'; | ||
|
|
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| const handlebars = createHandlebars(); | ||
|
|
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| function createSerializationHelper( | ||
| fnName: string, | ||
| serializeFn: (value: unknown) => string | ||
| ): HelperDelegate { | ||
| return (...args) => { | ||
| const { hash } = args.slice(-1)[0] as HelperOptions; | ||
| const hasHash = Object.keys(hash).length > 0; | ||
| const hasValues = args.length > 1; | ||
| if (hasHash && hasValues) { | ||
| throw new Error(`[${fnName}]: both value list and hash are not supported`); | ||
| } | ||
| if (hasHash) { | ||
| if (Object.values(hash).some((v) => typeof v === 'undefined')) | ||
| throw new Error(`[${fnName}]: unknown variable`); | ||
| return serializeFn(hash); | ||
| } else { | ||
| const values = args.slice(0, -1) as unknown[]; | ||
| if (values.some((value) => typeof value === 'undefined')) | ||
| throw new Error(`[${fnName}]: unknown variable`); | ||
| if (values.length === 0) throw new Error(`[${fnName}]: unknown variable`); | ||
| if (values.length === 1) return serializeFn(values[0]); | ||
| return serializeFn(values); | ||
| } | ||
| }; | ||
| } | ||
|
|
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| handlebars.registerHelper('json', createSerializationHelper('json', JSON.stringify)); | ||
| handlebars.registerHelper( | ||
| 'rison', | ||
| createSerializationHelper('rison', (v) => encode(v as RisonValue)) | ||
| ); | ||
|
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| handlebars.registerHelper('date', (...args) => { | ||
| const values = args.slice(0, -1) as [string | Date, string | undefined]; | ||
| // eslint-disable-next-line prefer-const | ||
| let [date, format] = values; | ||
| if (typeof date === 'undefined') throw new Error(`[date]: unknown variable`); | ||
| let momentDate: Moment | undefined; | ||
| if (typeof date === 'string') { | ||
| momentDate = dateMath.parse(date); | ||
| if (!momentDate || !momentDate.isValid()) { | ||
| const ts = Number(date); | ||
| if (!Number.isNaN(ts)) { | ||
| momentDate = moment(ts); | ||
| } | ||
| } | ||
| } else { | ||
| momentDate = moment(date); | ||
| } | ||
|
|
||
| if (!momentDate || !momentDate.isValid()) { | ||
| // do not throw error here, because it could be that in preview `__testValue__` is not parsable, | ||
| // but in runtime it is | ||
| return date; | ||
| } | ||
| return format ? momentDate.format(format) : momentDate.toISOString(); | ||
| }); | ||
|
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| handlebars.registerHelper('formatNumber', (rawValue: unknown, pattern: string) => { | ||
| if (!pattern || typeof pattern !== 'string') | ||
| throw new Error(`[formatNumber]: pattern string is required`); | ||
| const value = Number(rawValue); | ||
| if (rawValue == null || Number.isNaN(value)) return rawValue; | ||
| return numeral(value).format(pattern); | ||
| }); | ||
|
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| handlebars.registerHelper('lowercase', (rawValue: unknown) => String(rawValue).toLowerCase()); | ||
| handlebars.registerHelper('uppercase', (rawValue: unknown) => String(rawValue).toUpperCase()); | ||
| handlebars.registerHelper('trim', (rawValue: unknown) => String(rawValue).trim()); | ||
| handlebars.registerHelper('trimLeft', (rawValue: unknown) => String(rawValue).trimLeft()); | ||
| handlebars.registerHelper('trimRight', (rawValue: unknown) => String(rawValue).trimRight()); | ||
| handlebars.registerHelper('left', (rawValue: unknown, numberOfChars: number) => { | ||
| if (typeof numberOfChars !== 'number') | ||
| throw new Error('[left]: expected "number of characters to extract" to be a number'); | ||
| return String(rawValue).slice(0, numberOfChars); | ||
| }); | ||
| handlebars.registerHelper('right', (rawValue: unknown, numberOfChars: number) => { | ||
| if (typeof numberOfChars !== 'number') | ||
| throw new Error('[left]: expected "number of characters to extract" to be a number'); | ||
| return String(rawValue).slice(-numberOfChars); | ||
| }); | ||
| handlebars.registerHelper('mid', (rawValue: unknown, start: number, length: number) => { | ||
| if (typeof start !== 'number') throw new Error('[left]: expected "start" to be a number'); | ||
| if (typeof length !== 'number') throw new Error('[left]: expected "length" to be a number'); | ||
| return String(rawValue).substr(start, length); | ||
| }); | ||
| handlebars.registerHelper('concat', (...args) => { | ||
| const values = args.slice(0, -1) as unknown[]; | ||
| return values.join(''); | ||
| }); | ||
| handlebars.registerHelper('split', (...args) => { | ||
| const [str, splitter] = args.slice(0, -1) as [string, string]; | ||
| if (typeof splitter !== 'string') throw new Error('[split] "splitter" expected to be a string'); | ||
| return String(str).split(splitter); | ||
| }); | ||
| handlebars.registerHelper('replace', (...args) => { | ||
| const [str, searchString, valueString] = args.slice(0, -1) as [string, string, string]; | ||
| if (typeof searchString !== 'string' || typeof valueString !== 'string') | ||
| throw new Error( | ||
| '[replace]: "searchString" and "valueString" parameters expected to be strings, but not a string or missing' | ||
| ); | ||
| return String(str).split(searchString).join(valueString); | ||
| }); | ||
|
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| handlebars.registerHelper('encodeURIComponent', (component: unknown) => { | ||
| const str = String(component); | ||
| return encodeURIComponent(str); | ||
| }); | ||
| handlebars.registerHelper('encodeURIQuery', (component: unknown) => { | ||
| const str = String(component); | ||
| return url.encodeUriQuery(str); | ||
| }); | ||
|
|
||
| export { handlebars }; |
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