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move infering date field to seperate file to improve code readability
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| const moment = require(`moment`) | ||
| const { GraphQLString, GraphQLBoolean } = require(`graphql`) | ||
| const _ = require(`lodash`) | ||
| const { oneLine } = require(`common-tags`) | ||
|
|
||
| const ISO_8601_FORMAT = [ | ||
| `YYYY`, | ||
| `YYYY-MM`, | ||
| `YYYY-MM-DD`, | ||
| `YYYYMMDD`, | ||
| `YYYY-MM-DDTHHZ`, | ||
| `YYYY-MM-DDTHH:mmZ`, | ||
| `YYYY-MM-DDTHHmmZ`, | ||
| `YYYY-MM-DDTHH:mm:ssZ`, | ||
| `YYYY-MM-DDTHHmmssZ`, | ||
| `YYYY-MM-DDTHH:mm:ss.SSSZ`, | ||
| `YYYY-MM-DDTHHmmss.SSSZ`, | ||
| `YYYY-[W]WW`, | ||
| `YYYY[W]WW`, | ||
| `YYYY-[W]WW-E`, | ||
| `YYYY[W]WWE`, | ||
| `YYYY-DDDD`, | ||
| `YYYYDDDD`, | ||
| ] | ||
|
|
||
| const DateFieldDef = { | ||
| type: GraphQLString, | ||
| args: { | ||
| formatString: { | ||
| type: GraphQLString, | ||
| description: oneLine` | ||
| Format the date using Moment.js' date tokens e.g. | ||
| "date(formatString: "YYYY MMMM DD)" | ||
| See https://momentjs.com/docs/#/displaying/format/ | ||
| for documentation for different tokens`, | ||
| }, | ||
| fromNow: { | ||
| type: GraphQLBoolean, | ||
| description: oneLine` | ||
| Returns a string generated with Moment.js' fromNow function`, | ||
| }, | ||
| difference: { | ||
| type: GraphQLString, | ||
| description: oneLine` | ||
| Returns the difference between this date and the current time. | ||
| Defaults to miliseconds but you can also pass in as the | ||
| measurement years, months, weeks, days, hours, minutes, | ||
| and seconds.`, | ||
| }, | ||
| locale: { | ||
| type: GraphQLString, | ||
| description: oneLine` | ||
| Configures the locale Moment.js will use to format the date.`, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| // Check if this is a date. | ||
| // All the allowed ISO 8601 date-time formats used. | ||
| function shouldInfer(value) { | ||
| const momentDate = moment.utc(value, ISO_8601_FORMAT, true) | ||
| return momentDate.isValid() && typeof exampleValue !== `number` | ||
| } | ||
|
|
||
| function createType(fieldName) { | ||
| return { | ||
| ...DateFieldDef, | ||
| resolve(object, args) { | ||
| let date | ||
| if (object[fieldName]) { | ||
| date = JSON.parse(JSON.stringify(object[fieldName])) | ||
| } else { | ||
| return null | ||
| } | ||
| return formatDate(date, args) | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| function formatDate(date, args) { | ||
| if (_.isPlainObject(args)) { | ||
| const { fromNow, difference, formatString, locale = `en` } = args | ||
| if (formatString) { | ||
| return moment | ||
| .utc(date, ISO_8601_FORMAT, true) | ||
| .locale(locale) | ||
| .format(formatString) | ||
| } else if (fromNow) { | ||
| return moment | ||
| .utc(date, ISO_8601_FORMAT, true) | ||
| .locale(locale) | ||
| .fromNow() | ||
| } else if (difference) { | ||
| return moment().diff( | ||
| moment.utc(date, ISO_8601_FORMAT, true).locale(locale), | ||
| difference | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| return date | ||
| } | ||
|
|
||
| module.exports = { shouldInfer, createType } |