Files
vuepress/packages/@vuepress/core/lib/prepare/AppContext.js
T
2019-02-26 23:53:38 +08:00

460 lines
12 KiB
JavaScript
Executable File

'use strict'
/**
* Module dependencies.
*/
const createMarkdown = require('./createMarkdown')
const loadConfig = require('./loadConfig')
const loadTheme = require('./loadTheme')
const { getCacheLoaderOptions } = require('./CacheLoader')
const {
fs, path, logger, chalk, globby, sort,
datatypes: { isFunction },
fallback: { fsExistsFallback }
} = require('@vuepress/shared-utils')
const Page = require('./Page')
const ClientComputedMixin = require('./ClientComputedMixin')
const PluginAPI = require('../plugin-api/index')
/**
* Expose AppContext.
*/
module.exports = class AppContext {
static getInstance (...args) {
if (!AppContext._instance) {
AppContext._instance = new AppContext(...args)
}
return AppContext._instance
}
/**
* Instantiate the app context with a new API
*
* @param {string} sourceDir
* @param {{
* isProd: boolean,
* plugins: pluginsConfig,
* theme: themeNameConfig
* temp: string
* }} options
*/
constructor (sourceDir, cliOptions = {}, isProd) {
logger.debug('sourceDir', sourceDir)
this.sourceDir = sourceDir
this.cliOptions = cliOptions
this.isProd = isProd
const { tempPath, writeTemp } = createTemp(cliOptions.temp)
this.tempPath = tempPath
this.writeTemp = writeTemp
this.vuepressDir = path.resolve(sourceDir, '.vuepress')
}
/**
* Resolve user config and initialize.
*
* @returns {void}
* @api private
*/
resolveConfigAndInitialize () {
this.siteConfig = loadConfig(this.vuepressDir)
if (isFunction(this.siteConfig)) {
this.siteConfig = this.siteConfig(this)
}
// TODO custom cwd.
this.cwd = process.cwd()
this.base = this.siteConfig.base || '/'
this.themeConfig = this.siteConfig.themeConfig || {}
const rawOutDir = this.cliOptions.dest || this.siteConfig.dest
this.outDir = rawOutDir
? require('path').resolve(this.cwd, rawOutDir)
: require('path').resolve(this.sourceDir, '.vuepress/dist')
this.pages = [] // Array<Page>
this.pluginAPI = new PluginAPI(this)
this.ClientComputedMixinConstructor = ClientComputedMixin(this.getSiteData())
}
/**
* Load pages, load plugins, apply plugins / plugin options, etc.
*
* @returns {Promise<void>}
* @api private
*/
async process () {
this.resolveConfigAndInitialize()
this.resolveCacheLoaderOptions()
this.normalizeHeadTagUrls()
this.themeAPI = loadTheme(this)
this.resolveTemplates()
this.resolveGlobalLayout()
this.applyInternalPlugins()
this.applyUserPlugins()
this.pluginAPI.initialize()
this.markdown = createMarkdown(this)
await this.resolvePages()
await this.pluginAPI.options.additionalPages.apply(this)
await Promise.all(
this.pluginAPI.options.additionalPages.appliedValues.map(async (options) => {
await this.addPage(options)
})
)
await this.pluginAPI.options.ready.apply()
await Promise.all([
this.pluginAPI.options.clientDynamicModules.apply(this),
this.pluginAPI.options.enhanceAppFiles.apply(this),
this.pluginAPI.options.globalUIComponents.apply(this)
])
}
/**
* Apply internal plugins
*
* @api private
*/
applyInternalPlugins () {
const themeConfig = this.themeConfig
const siteConfig = this.siteConfig
const shouldUseLastUpdated = (
themeConfig.lastUpdated
|| Object.keys(siteConfig.locales && themeConfig.locales || {})
.some(base => themeConfig.locales[base].lastUpdated)
)
this.pluginAPI
// internl core plugins
.use(require('../internal-plugins/siteData'))
.use(require('../internal-plugins/routes'))
.use(require('../internal-plugins/rootMixins'))
.use(require('../internal-plugins/enhanceApp'))
.use(require('../internal-plugins/palette'))
.use(require('../internal-plugins/style'))
.use(require('../internal-plugins/layoutComponents'))
.use(require('../internal-plugins/pageComponents'))
.use(require('../internal-plugins/transformModule'))
.use(require('../internal-plugins/dataBlock'))
.use(require('../internal-plugins/frontmatterBlock'))
.use('@vuepress/last-updated', !!shouldUseLastUpdated)
.use('@vuepress/register-components', {
componentsDir: [
path.resolve(this.sourceDir, '.vuepress/components'),
path.resolve(this.themeAPI.theme.path, 'global-components'),
this.themeAPI.existsParentTheme && path.resolve(this.themeAPI.parentTheme.path, 'global-components')
]
})
}
/**
* Apply user plugins
*
* @api private
*/
applyUserPlugins () {
this.pluginAPI.useByPluginsConfig(this.cliOptions.plugins)
if (this.themeAPI.existsParentTheme) {
this.pluginAPI.use(this.themeAPI.parentTheme.entry)
}
this.pluginAPI
.use(this.themeAPI.theme.entry)
.use(this.themeAPI.vuepressPlugin)
.use(Object.assign({}, this.siteConfig, { name: '@vuepress/internal-site-config' }))
}
/**
* normalize head tag urls for base
*
* @api private
*/
normalizeHeadTagUrls () {
if (this.base !== '/' && this.siteConfig.head) {
this.siteConfig.head.forEach(tag => {
const attrs = tag[1]
if (attrs) {
for (const name in attrs) {
if (name === 'src' || name === 'href') {
const value = attrs[name]
if (value.charAt(0) === '/') {
attrs[name] = this.base + value.slice(1)
}
}
}
}
})
}
}
/**
* Resolve options of cache loader.
*/
resolveCacheLoaderOptions () {
Object.assign(this, (getCacheLoaderOptions(this.siteConfig, this.cliOptions, this.cwd, this.isProd)))
}
/**
* Make template configurable
*
* Resolving Priority (devTemplate as example):
*
* 1. siteConfig.devTemplate
* 2. `dev.html` located at .vuepress/templates
* 3. themeEntryFile.devTemplate
* 4. default devTemplate
*
* @api private
*/
resolveTemplates () {
this.devTemplate = this.resolveCommonAgreementFilePath(
'devTemplate',
{
defaultValue: path.resolve(__dirname, '../app/index.dev.html'),
siteAgreement: 'templates/dev.html',
themeAgreement: 'templates/dev.html'
}
)
this.ssrTemplate = this.resolveCommonAgreementFilePath(
'ssrTemplate',
{
defaultValue: path.resolve(__dirname, '../app/index.ssr.html'),
siteAgreement: 'templates/ssr.html',
themeAgreement: 'templates/ssr.html'
}
)
logger.debug('SSR Template File: ' + chalk.gray(this.ssrTemplate))
logger.debug('DEV Template File: ' + chalk.gray(this.devTemplate))
}
/**
* resolve global layout
*
* @returns {string}
* @api private
*/
resolveGlobalLayout () {
this.globalLayout = this.resolveCommonAgreementFilePath(
'globalLayout',
{
defaultValue: path.resolve(__dirname, `../app/components/GlobalLayout.vue`),
siteAgreement: `components/GlobalLayout.vue`,
themeAgreement: `layouts/GlobalLayout.vue`
}
)
logger.debug('globalLayout: ' + chalk.gray(this.globalLayout))
}
/**
* Resolve a path-type config.
*
* @param {string} configKey
* @param {string} defaultValue an absolute path
* @param {string} siteAgreement a relative path to vuepress dir
* @param {string} themeAgreement a relative path to theme dir
* @returns {string | void}
*/
resolveCommonAgreementFilePath (configKey, {
defaultValue,
siteAgreement,
themeAgreement
}) {
const siteConfigValue = this.siteConfig[configKey]
siteAgreement = this.resolveSiteAgreementFile(siteAgreement)
const themeConfigValue = this.getThemeConfigValue(configKey)
themeAgreement = this.resolveThemeAgreementFile(themeAgreement)
return fsExistsFallback([
siteConfigValue,
siteAgreement,
themeConfigValue,
themeAgreement,
defaultValue
].map(v => v))
}
/**
* Find all page source files located in sourceDir
*
* @returns {Promise<void>}
* @api private
*/
async resolvePages () {
// resolve pageFiles
const patterns = ['**/*.md', '**/*.vue', '!.vuepress', '!node_modules']
if (this.siteConfig.dest) {
// #654 exclude dest folder when dest dir was set in
// sourceDir but not in '.vuepress'
const outDirRelative = path.relative(this.sourceDir, this.outDir)
if (!outDirRelative.includes('..')) {
patterns.push('!' + outDirRelative)
}
}
const pageFiles = sort(await globby(patterns, { cwd: this.sourceDir }))
await Promise.all(pageFiles.map(async (relative) => {
const filePath = path.resolve(this.sourceDir, relative)
await this.addPage({ filePath, relative })
}))
}
/**
* Add a page
*
* @returns {Promise<void>}
* @api public
*/
async addPage (options) {
options.permalinkPattern = this.siteConfig.permalink
const page = new Page(options, this)
await page.process({
markdown: this.markdown,
computed: new this.ClientComputedMixinConstructor(),
enhancers: this.pluginAPI.options.extendPageData.items
})
this.pages.push(page)
}
/**
* Get config value of current active theme.
*
* @param {string} key
* @returns {any}
* @api private
*/
getThemeConfigValue (key) {
return this.themeAPI.theme.entry[key]
|| this.themeAPI.existsParentTheme && this.themeAPI.parentTheme.entry[key]
}
/**
* Resolve the absolute path of a theme-level agreement file,
* return `undefined` when it doesn't exists.
*
* @param {string} filepath
* @returns {string|undefined}
*/
resolveThemeAgreementFile (filepath) {
const current = path.resolve(this.themeAPI.theme.path, filepath)
if (fs.existsSync(current)) {
return current
}
if (this.themeAPI.existsParentTheme) {
const parent = path.resolve(this.themeAPI.theme.path, filepath)
if (fs.existsSync(parent)) {
return parent
}
}
}
/**
* Resolve the absolute path of a site-level agreement file,
* return `undefined` when it doesn't exists.
*
* @param {string} filepath
* @returns {string|undefined}
*/
resolveSiteAgreementFile (filepath) {
return path.resolve(this.vuepressDir, filepath)
}
/**
* Get the data to be delivered to the client.
*
* @returns {{
* title: string,
* description: string,
* base: string,
* pages: Page[],
* themeConfig: ThemeConfig,
* locales: Locales
* }}
* @api public
*/
getSiteData () {
const { locales } = this.siteConfig
if (locales) {
Object.keys(locales).forEach(path => {
locales[path].path = path
})
}
return {
title: this.siteConfig.title || '',
description: this.siteConfig.description || '',
base: this.base,
pages: this.pages.map(page => page.toJson()),
themeConfig: this.siteConfig.themeConfig || {},
locales
}
}
}
/**
* Create a dynamic temp utility context that allow to lanuch
* multiple apps with isolated context at the same time.
* @param tempPath
* @returns {{
* writeTemp: (function(file: string, content: string): string),
* tempPath: string
* }}
*/
function createTemp (tempPath) {
if (!tempPath) {
tempPath = path.resolve(__dirname, '../../.temp')
} else {
tempPath = path.resolve(tempPath)
}
if (!fs.existsSync(tempPath)) {
fs.ensureDirSync(tempPath)
} else {
fs.emptyDirSync(tempPath)
}
logger.debug(`Temp directory: ${chalk.gray(tempPath)}`)
const tempCache = new Map()
async function writeTemp (file, content) {
const destPath = path.join(tempPath, file)
await fs.ensureDir(path.parse(destPath).dir)
// cache write to avoid hitting the dist if it didn't change
const cached = tempCache.get(file)
if (cached !== content) {
await fs.writeFile(destPath, content)
tempCache.set(file, content)
}
return destPath
}
return { writeTemp, tempPath }
}