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Copy pathrun.js
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187 lines (156 loc) · 4.65 KB
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var fs = require('fs')
var path = require('path')
var _ = require('lodash')
var chalk = require('chalk')
var chokidar = require('chokidar')
var enableDestroy = require('server-destroy')
var pause = require('connect-pause')
var is = require('./utils/is')
var load = require('./utils/load')
var jsonServer = require('../server')
function prettyPrint (argv, object, rules) {
var host = argv.host === '0.0.0.0' ? 'localhost' : argv.host
var port = argv.port
var root = 'http://' + host + ':' + port
console.log()
console.log(chalk.bold(' Resources'))
for (var prop in object) {
console.log(' ' + root + '/' + prop)
}
if (rules) {
console.log()
console.log(chalk.bold(' Other routes'))
for (var rule in rules) {
console.log(' ' + rule + ' -> ' + rules[rule])
}
}
console.log()
console.log(chalk.bold(' Home'))
console.log(' ' + root)
console.log()
}
function createApp (source, object, routes, argv) {
var app = jsonServer.create()
var router = jsonServer.router(
is.JSON(source)
? source
: object
)
var defaultsOpts = {
logger: !argv.quiet,
readOnly: argv.readOnly,
noCors: argv.noCors,
noGzip: argv.noGzip
}
if (argv.static) {
defaultsOpts.static = path.join(process.cwd(), argv.static)
}
var defaults = jsonServer.defaults(defaultsOpts)
app.use(defaults)
if (routes) {
var rewriter = jsonServer.rewriter(routes)
app.use(rewriter)
}
if (argv.delay) {
app.use(pause(argv.delay))
}
router.db._.id = argv.id
app.db = router.db
app.use(router)
return app
}
module.exports = function (argv) {
var source = argv._[0]
var app
var server
if (!fs.existsSync(argv.snapshots)) {
console.log('Error: snapshots directory ' + argv.snapshots + ' doesn\'t exist')
process.exit(1)
}
// noop log fn
if (argv.quiet) {
console.log = function () {}
}
console.log()
console.log(chalk.cyan(' \\{^_^}/ hi!'))
function start (cb) {
console.log()
console.log(chalk.gray(' Loading', source))
// Load JSON, JS or HTTP database
load(source, function (err, data) {
if (err) throw err
// Load additional routes
if (argv.routes) {
console.log(chalk.gray(' Loading', argv.routes))
var routes = JSON.parse(fs.readFileSync(argv.routes))
}
console.log(chalk.gray(' Done'))
// Create app and server
app = createApp(source, data, routes, argv)
server = app.listen(argv.port, argv.host)
// Enhance with a destroy function
enableDestroy(server)
// Display server informations
prettyPrint(argv, data, routes)
cb && cb()
})
}
// Start server
start(function () {
// Snapshot
console.log(
chalk.gray(' Type s + enter at any time to create a snapshot of the database')
)
process.stdin.resume()
process.stdin.setEncoding('utf8')
process.stdin.on('data', function (chunk) {
if (chunk.trim().toLowerCase() === 's') {
var filename = 'db-' + Date.now() + '.json'
var file = path.join(argv.snapshots, filename)
var state = app.db.getState()
fs.writeFileSync(file, JSON.stringify(state, null, 2), 'utf-8')
console.log(' Saved snapshot to ' + path.relative(process.cwd(), file) + '\n')
}
})
// Watch files
if (argv.watch) {
console.log(chalk.gray(' Watching...'))
console.log()
var source = argv._[0]
// Can't watch URL
if (is.URL(source)) throw new Error('Can\'t watch URL')
// Watch .js or .json file
// Since lowdb uses atomic writing, directory is watched instead of file
chokidar
.watch(path.dirname(source))
.on('change', function (file) {
if (file === source) {
if (is.JSON(file)) {
var obj = JSON.parse(fs.readFileSync(file))
// Compare .json file content with in memory database
var isDatabaseDifferent = !_.isEqual(obj, app.db.getState())
if (isDatabaseDifferent) {
console.log(chalk.gray(' ' + file + ' has changed, reloading...'))
server && server.destroy()
start()
}
} else {
console.log(chalk.gray(' ' + file + ' has changed, reloading...'))
server && server.destroy()
start()
}
}
})
// Watch routes
if (argv.routes) {
chokidar
.watch(argv.routes)
.on('change', function (file) {
console.log(chalk.gray(' ' + file + ' has changed, reloading...'))
server && server.destroy()
start()
})
}
}
})
}