wikijs-fork/server/libs/git.js

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'use strict'
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const Git = require('git-wrapper2-promise')
const Promise = require('bluebird')
const path = require('path')
const fs = Promise.promisifyAll(require('fs'))
const _ = require('lodash')
const URL = require('url')
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/**
* Git Model
*/
module.exports = {
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_git: null,
_url: '',
_repo: {
path: '',
branch: 'master',
exists: false
},
_signature: {
email: 'wiki@example.com'
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},
_opts: {
clone: {},
push: {}
},
onReady: null,
/**
* Initialize Git model
*
* @return {Object} Git model instance
*/
init () {
let self = this
// -> Build repository path
if (_.isEmpty(appconfig.paths.repo)) {
self._repo.path = path.join(ROOTPATH, 'repo')
} else {
self._repo.path = appconfig.paths.repo
}
// -> Initialize repository
self.onReady = self._initRepo(appconfig)
// Define signature
if (appconfig.git) {
self._signature.email = appconfig.git.serverEmail || 'wiki@example.com'
}
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return self
},
/**
* Initialize Git repository
*
* @param {Object} appconfig The application config
* @return {Object} Promise
*/
_initRepo (appconfig) {
let self = this
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winston.info('Checking Git repository...')
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// -> Check if path is accessible
return fs.mkdirAsync(self._repo.path).catch((err) => {
if (err.code !== 'EEXIST') {
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winston.error('Invalid Git repository path or missing permissions.')
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}
}).then(() => {
self._git = new Git({ 'git-dir': self._repo.path })
// -> Check if path already contains a git working folder
return self._git.isRepo().then((isRepo) => {
self._repo.exists = isRepo
return (!isRepo) ? self._git.exec('init') : true
}).catch((err) => { // eslint-disable-line handle-callback-err
self._repo.exists = false
})
}).then(() => {
if (appconfig.git === false) {
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winston.info('Remote Git syncing is disabled. Not recommended!')
return Promise.resolve(true)
}
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// Initialize remote
let urlObj = URL.parse(appconfig.git.url)
if (appconfig.git.auth.type !== 'ssh') {
urlObj.auth = appconfig.git.auth.username + ':' + appconfig.git.auth.password
}
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self._url = URL.format(urlObj)
let gitConfigs = [
() => { return self._git.exec('config', ['--local', 'user.name', 'Wiki']) },
() => { return self._git.exec('config', ['--local', 'user.email', self._signature.email]) },
() => { return self._git.exec('config', ['--local', '--bool', 'http.sslVerify', _.toString(appconfig.git.auth.sslVerify)]) }
]
if (appconfig.git.auth.type === 'ssh') {
gitConfigs.push(() => {
return self._git.exec('config', ['--local', 'core.sshCommand', 'ssh -i "' + appconfig.git.auth.privateKey + '" -o StrictHostKeyChecking=no'])
})
}
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return self._git.exec('remote', 'show').then((cProc) => {
let out = cProc.stdout.toString()
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return Promise.each(gitConfigs, fn => { return fn() }).then(() => {
if (!_.includes(out, 'origin')) {
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return self._git.exec('remote', ['add', 'origin', self._url])
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} else {
return self._git.exec('remote', ['set-url', 'origin', self._url])
}
}).catch(err => {
winston.error(err)
})
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})
}).catch((err) => {
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winston.error('Git remote error!')
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throw err
}).then(() => {
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winston.info('Git repository is OK.')
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return true
})
},
/**
* Gets the repo path.
*
* @return {String} The repo path.
*/
getRepoPath () {
return this._repo.path || path.join(ROOTPATH, 'repo')
},
/**
* Sync with the remote repository
*
* @return {Promise} Resolve on sync success
*/
resync () {
let self = this
// Is git remote disabled?
if (appconfig.git === false) {
return Promise.resolve(true)
}
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// Fetch
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winston.info('Performing pull from remote Git repository...')
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return self._git.pull('origin', self._repo.branch).then((cProc) => {
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winston.info('Git Pull completed.')
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})
.catch((err) => {
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winston.error('Unable to fetch from git origin!')
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throw err
})
.then(() => {
// Check for changes
return self._git.exec('log', 'origin/' + self._repo.branch + '..HEAD').then((cProc) => {
let out = cProc.stdout.toString()
if (_.includes(out, 'commit')) {
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winston.info('Performing push to remote Git repository...')
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return self._git.push('origin', self._repo.branch).then(() => {
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return winston.info('Git Push completed.')
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})
} else {
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winston.info('Git Push skipped. Repository is already in sync.')
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}
return true
})
})
.catch((err) => {
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winston.error('Unable to push changes to remote Git repository!')
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throw err
})
},
/**
* Commits a document.
*
* @param {String} entryPath The entry path
* @return {Promise} Resolve on commit success
*/
commitDocument (entryPath, author) {
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let self = this
let gitFilePath = entryPath + '.md'
let commitMsg = ''
return self._git.exec('ls-files', gitFilePath).then((cProc) => {
let out = cProc.stdout.toString()
return _.includes(out, gitFilePath)
}).then((isTracked) => {
commitMsg = (isTracked) ? 'Updated ' + gitFilePath : 'Added ' + gitFilePath
return self._git.add(gitFilePath)
}).then(() => {
return self._git.exec('commit', ['-m', commitMsg, '--author="' + author.name + ' <' + author.email + '>"']).catch((err) => {
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if (_.includes(err.stdout, 'nothing to commit')) { return true }
})
})
},
/**
* Move a document.
*
* @param {String} entryPath The current entry path
* @param {String} newEntryPath The new entry path
* @return {Promise<Boolean>} Resolve on success
*/
moveDocument (entryPath, newEntryPath) {
let self = this
let gitFilePath = entryPath + '.md'
let gitNewFilePath = newEntryPath + '.md'
return self._git.exec('mv', [gitFilePath, gitNewFilePath]).then((cProc) => {
let out = cProc.stdout.toString()
if (_.includes(out, 'fatal')) {
let errorMsg = _.capitalize(_.head(_.split(_.replace(out, 'fatal: ', ''), ',')))
throw new Error(errorMsg)
}
return true
})
},
/**
* Commits uploads changes.
*
* @param {String} msg The commit message
* @return {Promise} Resolve on commit success
*/
commitUploads (msg) {
let self = this
msg = msg || 'Uploads repository sync'
return self._git.add('uploads').then(() => {
return self._git.commit(msg).catch((err) => {
if (_.includes(err.stdout, 'nothing to commit')) { return true }
})
})
}
}