mirror of https://gitlab.com/bramw/baserow.git
95 lines
2.9 KiB
JavaScript
95 lines
2.9 KiB
JavaScript
'use strict'
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const mjml2html = require('mjml')
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const fs = require('fs')
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const Eta = require('eta')
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const path = require('path')
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const glob = require('glob')
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const chokidar = require('chokidar')
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const BASEROW_BACKEND_SRC_DIR = path.join(__dirname, '..', 'src')
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const MJML_FILE_SEARCH_ROOT = process.env.MJML_FILE_SEARCH_ROOT
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? process.env.MJML_FILE_SEARCH_ROOT
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: BASEROW_BACKEND_SRC_DIR
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const MJML_ETA_FILE_GLOB = path.join(MJML_FILE_SEARCH_ROOT, '**', '*.mjml.eta')
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const ETA_LAYOUT_FILE_GLOB = path.join(
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MJML_FILE_SEARCH_ROOT,
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'**',
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'*.layout.eta'
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)
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/**
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* Given a .mjml.eta file first renders the eta template to get a .mjml file and then
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* renders the mjml file to a normal html django template file.
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*
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* @param mjmlEtaFile The path to the .mjml.eta file.
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*/
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function compileEtaAndMjml(mjmlEtaFile) {
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const Reset = '\x1B[0m'
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const FgGreen = '\x1B[32m'
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console.log(`Compiling ${mjmlEtaFile}`)
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Eta.configure({
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// Set views to the directory of the file to template so it can use layout(path)
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// statements relative to its own directory.
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views: path.dirname(mjmlEtaFile),
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})
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const tmplText = fs.readFileSync(mjmlEtaFile, 'utf8')
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const mjmlText = Eta.render(tmplText, {})
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const html = mjml2html(mjmlText, {
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validationLevel: 'strict',
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beautify: true,
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}).html
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const targetHtmlFile = mjmlEtaFile.replace('.mjml.eta', '.html')
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console.log(
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`${FgGreen}Writing compiled email template to ${targetHtmlFile}${Reset}`
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)
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fs.writeFileSync(targetHtmlFile, html)
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}
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function recompileAllEtaAndMjmlFilesAfterLayoutFileChanges(layoutFile) {
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console.log(`Layout file changed (${layoutFile})`)
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glob(MJML_ETA_FILE_GLOB, {}, function (er, files) {
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files.forEach((file) => {
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compileEtaAndMjml(file)
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})
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})
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}
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/**
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* Watches *.mjml.eta and *.layout.eta files and runs the eta templater followed by
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* the mjml cli over them initial run and on change if run in watch mode.
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*
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* We use the simple javascript eta templating engine to first extend any base layout
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* files as MJML does not come with any built in templating. Secondly we use the MJML
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* cli tool to convert the MJML files into html ready to be used as a Django template.
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*
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* @param args If command line arg is watch then continually watches the files,
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* otherwise just runs templating/compiling once over matching files and exits.
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*/
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function main(args) {
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const watchMode = args.length > 0 && args[0] === 'watch'
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const mjmlEtaWatcher = chokidar
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.watch(MJML_ETA_FILE_GLOB, { persistent: watchMode })
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.on('add', compileEtaAndMjml)
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if (watchMode) {
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console.log(
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'Watching and recompiling changes to files found using glob pattern' +
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` ${MJML_ETA_FILE_GLOB}`
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)
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mjmlEtaWatcher.on('change', compileEtaAndMjml)
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chokidar
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.watch(ETA_LAYOUT_FILE_GLOB, { persistent: watchMode })
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.on('change', recompileAllEtaAndMjmlFilesAfterLayoutFileChanges)
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}
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}
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const args = process.argv.slice(2)
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main(args)
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