# Description:
#   Deployment script
#
# Commands:
#   hubot deploy <project> [with <program>] [from branch <branch>] to <target> [after <command>[, <command>, ...]]
#
# URLS:
#
# Notes:
#
fs = require 'fs'

deploymentDirectory = null

module.exports = (robot) ->
    robot.hear /deploy set ([^\s]+) +(.+)$/i, (res) ->
        if res.match[1] == "directory"
            deploymentDirectory  = res.match[2]
    
    robot.hear /deploy +([^\s]+)( +with +([^\s]+))?( +from +branch +([^\s]+))? +to +([^\s]+)( +after (.*))?$/i, (res) ->
        
        if ! process.env.hasOwnProperty('HUBO_DEPLOYMENT_PROJECTS_DIRECTORY')
            if deploymentDirectory == null
                res.reply "You must set the env var HUBO_DEPLOYMENT_PROJECTS_DIRECTORY with the directory of the projects."
                res.reply "Temporaly, you can use the command: deploy set directory <directory>"
                return

        project  = res.match[1]
        target   = res.match[6]
        program  = if res.match[3] then res.match[3] else null
        branch   = if res.match[5] then res.match[5] else null
        commands = if res.match[8] then cleanCommands res.match[8].split "," else []

        if deploymentDirectory != null
            directory = deploymentDirectory
        else
            directory = process.env.HUBO_DEPLOYMENT_PROJECTS_DIRECTORY
            
        directory += "/" + project

        try
            fs.stat directory, (err, stats) ->
                if err != null or !stats.isDirectory
                    return res.reply "Project not found [" + directory + "]"

                try
                    fs.statSync directory + '/.svn'
                    pv = new SvnProjectVersionning branch
                catch e
                
                try
                    fs.statSync directory + '/.git'
                    pv = new GitProjectVersionning branch
                catch e

                if pv
                    d = deploy directory, pv, commands, target, program
                    res.send d
                else
                    res.reply "Not a SVN or GIT repository"
        catch e
            res.reply "Exception: " + e

class ProjectVersionning
    constructor: (@branch) ->
    getUpdateCommands: () ->

class SvnProjectVersionning extends ProjectVersionning
    getUpdateCommands: () ->
        ['svn up']

class GitProjectVersionning extends ProjectVersionning
    getUpdateCommands: () ->
        commands = []

        if @branch == null
            commands.push 'git pull origin $(git rev-parse --abbrev-ref HEAD)'
        else
            br = @branch.split "/"

            if br.length == 1
                commands.push 'git checkout ' + br[0]
                commands.push 'git pull origin ' + br[0]
            else if br.length == 2
                commands.push 'git checkout ' + br[1]
                commands.push 'git pull ' + br.join(' ')

        commands

logExec = (command, options) ->
    exec = require "sync-exec"
    exec command, options


deploy = (directory, projectVersionning, commands, target, program) ->
    commands = projectVersionning.getUpdateCommands().concat(commands)
    canDeploy = true
    results = []

    for command in commands 
        if !canDeploy
            continue

        stmt = logExec command , {cwd: directory}
        
        results.push {
            command: command,
            status: stmt.status,
            stdout: stmt.stdout,
            stderr: stmt.stderr,
        }

        if stmt.status != 0
            canDeploy = false
       
    if canDeploy
        command = buildDeployCommand(directory, program, target) 
        stmt = logExec command, {cwd: directory}
        
        results.push {
            command: command,
            status: stmt.status,
            stdout: stmt.stdout,
            stderr: stmt.stderr,
        }

    output = ""

    for stmt in results
        output += generateOutput stmt
    
    output
        
generateOutput = (stmt) ->
    prefix = "deploy-" + Date.now()
    status = 
        if stmt.status == 0
            "<span color='green'>OK</span>"
        else
            "<span color='red'>Failed</span>"
    """
<p><pre>#{stmt.command}</pre> #{status}</p>
<div>
    Outputs: <a href="#" onclick="var e = document.getElementById('#{prefix}-stdout'); if (e.getAttribute('data-show') == 0) {e.style.display = 'block'; e.setAttribute('data-show', '1');} else {e.display = 'none'; e.setAttribute('data-show', '0');}">STDOUT</a> <a href="#" onclick="var e = document.getElementById('#{prefix}-stderr'); if (e.getAttribute('data-show') == 0) {e.style.display = 'block'; e.setAttribute('data-show', '1');} else {e.display = 'none'; e.setAttribute('data-show', '0');}">STDERR</a>
    <pre id="#{prefix}-stdout" data-show="0" style="display: none">#{stmt.stdout}</pre>
    <pre id="#{prefix}-stderr" data-show="0" style="display: none">#{stmt.stderr}</pre>
</div>

    """

buildDeployCommand = (directory, program, target) ->
    if program == 'mage'
        command = 'vendor/bin/mage deploy to:' + target
    else
        interpreter = null

        try
            fs.statSync directory + '/bin/console'
            interpreter = 'php bin/console'
        catch e
        
        try
            fs.statSync directory + '/app/console'
            interpreter = 'php app/console'
        catch e

        if interpreter != null
            command = interpreter + ' project:deploy ' + target + ' --go'

    command

cleanCommands = (commands) ->
    results = []
    commands = commands.map Function.prototype.call, String.prototype.trim

    interpreters = {
        "sf"      : "php symfony",
        "sf2"     : "php app/console",
        "sf3"     : "php bin/console",
        "composer": "composer"
    }

    for command in commands
        if command != ""
            if command.match /(sf[2-3]?|composer):.+/
                elements = command.split ":"
                interpreter = elements[0]
                elements = elements.splice 1
                args = elements.join(":")
                results.push interpreters[interpreter] + " " + args
            else
                results.push command
    results