doodzik/visual-acceptance-test

/*eslint no-console: "warn"*/

const simpleGit = require('simple-git/promise')
const shell     = require('shelljs')

// there is a bug with simple-git in the integration.
// check prior state of this file for the simple-git implementation
class LastCommit {

    constructor(workingDirPath) {
        this.git = simpleGit(workingDirPath)
        this.pastCommit = null
        this.checkout = true
    }

    // make stash and change to last commit
    past () {
        return new Promise((resolve, reject) => {
            shell.exec('git status -s', (_code, stdout) => {
                this.checkout = stdout.length == 0
                return this.git.stash(['--all']).then(() => {
                    if (!this.checkout) {
                        shell.exec('git rev-parse HEAD', function(_code, stdout) {
                            resolve(stdout.replace(/(\r\n|\n|\r)/gm,''))
                        })
                    } else {
                        shell.exec('git log --branches -1 --skip 1 --pretty="%H"', function(code, stdout, stderr) {
                            if (stderr) {
                                return reject(new Error(code + ' ' + stderr))
                            }
                            resolve(stdout.replace(/(\r\n|\n|\r)/gm,''))
                        })
                    }
                })
            })
        })
            .then(commit => {
                this.pastCommit = commit
                return new Promise((resolve, reject) => {
                    if (!this.checkout) {
                        return resolve()
                    }
                    shell.exec('git checkout ' + commit, function(code, stdout, stderr) {
                        if (stderr) {
                            console.log(code, stderr, reject)
                            // return reject(new Error(code + ' ' + stderr))
                        }
                        resolve()
                    })
                })
            })
    }

    // change to head and apply stash
    now () {
        const cmd = (this.checkout) ? 'git clean -fdx -e .visual-acceptance-test && git checkout . && git checkout - && git stash pop' : 'git reset --hard && git clean -fdx -e .visual-acceptance-test && git stash pop'

        return new Promise(function(resolve, reject) {
            shell.exec(cmd, function(code, stdout, stderr) {
                if (stderr) {
                    console.log(code, stderr, reject)
                    // return reject(new Error(code + ' ' + stderr))
                }
                resolve()
            })
        })
    }
}

module.exports = LastCommit