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blog/gatsby/createMarkdownFields.ts
Matthias Kretschmann 0aaf874538
refactor (#733)
* refactor

* fixes

* fixes

* fix

* package updates
2022-11-11 02:31:54 +00:00

73 lines
1.9 KiB
TypeScript

import { parse } from 'path'
import { createFilePath } from 'gatsby-source-filesystem'
import config from '../config'
import { Actions, Node, NodePluginArgs } from 'gatsby'
// Create slug, date & github file link for posts from file path values
export function createMarkdownFields(
node: Node,
actions: Actions,
getNode: NodePluginArgs['getNode']
) {
const { createNodeField } = actions
const fileNode = getNode(node.parent as string)
const parsedFilePath = parse(fileNode?.relativePath as string)
const slugOriginal = createFilePath({ node, getNode })
createSlug(node, createNodeField, parsedFilePath)
createDate(node, createNodeField, slugOriginal)
// github file link
const type = fileNode?.sourceInstanceName as string
const file = fileNode?.relativePath as string
const githubLink = `${config.repoContentPath}/${type}/${file}`
createNodeField({
node,
name: 'githubLink',
value: githubLink
})
createNodeField({
node,
name: 'type',
value: type?.replace('s', '')
})
}
function createSlug(
node: Node,
createNodeField: Actions['createNodeField'],
parsedFilePath: { name: string; dir: string }
) {
let slug
if (parsedFilePath.name === 'index') {
slug = `/${parsedFilePath.dir.substring(11)}` // remove date from file dir
} else {
slug = `/${parsedFilePath.name.substring(11)}` // remove date from file path
}
createNodeField({
node,
name: 'slug',
value: slug
})
}
function createDate(
node: Node,
createNodeField: Actions['createNodeField'],
slugOriginal: string
) {
// grab date from file path
let date = new Date(slugOriginal.substring(1, 11)).toISOString() // grab date from file path
// allow date overwrite in frontmatter
if ((node.frontmatter as any).date) {
date = new Date((node.frontmatter as any).date).toISOString()
}
createNodeField({ node, name: 'date', value: date })
}