# Description:
#   enable communication with Phabricator via Conduit api
#
# Dependencies:
#
# Configuration:
#   PHABRICATOR_URL
#   PHABRICATOR_API_KEY
#   PHABRICATOR_BOT_PHID
#
# Commands:
#   hubot phab version - give the version of hubot-phabs loaded
#   hubot phab new <project> <name of the task> - creates a new task
#   hubot phab paste <name of the paste> - creates a new paste
#   hubot phab count <project> - counts how many tasks a project has
#   hubot phab Txx - gives information about task Txx
#   hubot phab Txx + <some comment> - add a comment to task Txx
#   hubot phab Txx is <status> - modifies task Txx status
#   hubot phab Txx is <priority> - modifies task Txx priority
#   hubot phab assign Txx to <user> - assigns task Txx to comeone
#   hubot phab <user> - checks if user is known or not
#   hubot phab me as <email> - makes caller known with <email>
#   hubot phab <user> = <email> - associates user to email
#
# Author:
#   mose

Phabricator = require '../lib/phabricator'
moment = require 'moment'
path = require 'path'

module.exports = (robot) ->
  phab = new Phabricator robot, process.env

  #   hubot phab version - give the version of hubot-phabs loaded
  robot.respond /ph(?:ab)? version$/, (msg) ->
    pkg = require path.join __dirname, '..', 'package.json'
    msg.send "hubot-phabs module is version #{pkg.version}"
    msg.finish()

  #   hubot phab new <project> <name of the task> - creates a new task
  robot.respond (/ph(?:ab)? new ([-_a-zA-Z0-9]+) ([^=]+)(?: = (.*))?$/), (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      project = msg.match[1]
      name = msg.match[2]
      description = msg.match[3]
      phab.withProject project, (projectData) ->
        if projectData.error_info?
          msg.send projectData.error_info
        else
          phab.createTask msg.envelope.user, projectData.data.phid, name, description, (body) ->
            # console.log body
            if body['error_info']?
              msg.send "#{body['error_info']}"
            else
              id = body['result']['object']['id']
              url = process.env.PHABRICATOR_URL + "/T#{id}"
              phab.recordPhid msg.envelope.user, id
              msg.send "Task T#{id} created = #{url}"
    msg.finish()

  #   hubot phab paste <name of the paste> - creates a new paste
  robot.respond /ph(?:ab)? paste (.*)$/, (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      title = msg.match[1]
      phab.createPaste msg.envelope.user, title, (body) ->
        if body['error_info']?
          msg.send "#{body['error_info']}"
        else
          id = body['result']['object']['id']
          url = process.env.PHABRICATOR_URL + "/paste/edit/#{id}"
          phab.recordPhid msg.envelope.user, id
          msg.send "Paste P#{id} created = edit on #{url}"
    msg.finish()

  #   hubot phab count <project> - counts how many tasks a project has
  robot.respond (/ph(?:ab)? count ([-_a-zA-Z0-9]+)/), (msg) ->
    phab.withProject msg.match[1], (projectData) ->
      if projectData.error_info?
        msg.send projectData.error_info
      else
        phab.listTasks projectData.data.phid, (body) ->
          if Object.keys(body['result']).length is 0
            msg.send "#{projectData.data.name} has no tasks."
          else
            msg.send "#{projectData.data.name} has #{Object.keys(body['result']).length} tasks."
    msg.finish()

  #   hubot phab Txx - gives information about task Txxx
  robot.respond /ph(?:ab)?(?: T([0-9]+) ?)?$/, (msg) ->
    id = msg.match[1] ? phab.retrievePhid(msg.envelope.user)
    unless id?
      msg.send "Sorry, you don't have any task active right now."
      msg.finish()
      return
    phab.taskInfo id, (body) ->
      if body['error_info']?
        msg.send "oops T#{id} #{body['error_info']}"
      else
        phab.withUserByPhid body.result.ownerPHID, (owner) ->
          status = body.result.status
          priority = body.result.priority
          phab.recordPhid msg.envelope.user, id
          msg.send "T#{id} has status #{status}, " +
                   "priority #{priority}, owner #{owner.name}"
    msg.finish()

  #   hubot phab Txx + <some comment> - add a comment to task Txx
  robot.respond /ph(?:ab)?(?: T([0-9]+))? \+ (.+)$/, (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      id = msg.match[1] ? phab.retrievePhid(msg.envelope.user)
      unless id?
        msg.send "Sorry, you don't have any task active right now."
        msg.finish()
        return
      comment = msg.match[2]
      phab.addComment msg.envelope.user, id, comment, (body) ->
        if body['error_info']?
          msg.send "oops T#{id} #{body['error_info']}"
        else
          msg.send "Ok. Added comment \"#{comment}\" to T#{id}."
    msg.finish()


  #   hubot phab Txx is <status> - modifies task Txxx status
  robot.respond new RegExp(
    "ph(?:ab)?(?: T([0-9]+))? (?:is )?(#{Object.keys(phab.statuses).join('|')})" +
    '(?: = (.+))?$'
  ), (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      id = msg.match[1] ? phab.retrievePhid(msg.envelope.user)
      unless id?
        msg.send "Sorry, you don't have any task active right now."
        msg.finish()
        return
      status = msg.match[2]
      comment = msg.match[3]
      phab.updateStatus msg.envelope.user, id, status, comment, (body) ->
        if body['error_info']?
          msg.send "oops T#{id} #{body['error_info']}"
        else
          msg.send "Ok, T#{id} now has status #{phab.statuses[status]}."
    msg.finish()

  #   hubot phab Txx is <priority> - modifies task Txxx priority
  robot.respond new RegExp(
    "ph(?:ab)?(?: T([0-9]+))? (?:is )?(#{Object.keys(phab.priorities).join('|')})" +
    '(?: = (.+))?$'
  ), (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      id = msg.match[1] ? phab.retrievePhid(msg.envelope.user)
      unless id?
        msg.send "Sorry, you don't have any task active right now."
        msg.finish()
        return
      priority = msg.match[2]
      comment = msg.match[3]
      phab.updatePriority msg.envelope.user, id, priority, comment, (body) ->
        if body['error_info']?
          msg.send "oops T#{id} #{body['error_info']}"
        else
          msg.send "Ok, T#{id} now has priority #{priority}"
    msg.finish()

  #   hubot phab <user> - checks if user is known or not
  robot.respond /ph(?:ab)? ([^ ]*)$/, (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      name = msg.match[1]
      assignee = robot.brain.userForName(name)
      unless assignee
        msg.send "Sorry, I have no idea who #{name} is. Did you mistype it?"
        msg.finish()
        return
      phab.withUser msg.envelope.user, assignee, (userPhid) ->
        if userPhid.error_info?
          msg.send userPhid.error_info
        else
          msg.send "Hey I know #{name}, he's #{userPhid}"
    msg.finish()

  #   hubot phab me as <email> - makes caller known with <email>
  robot.respond /ph(?:ab)? me as (.*@.*)$/, (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      email = msg.match[1]
      assignee = robot.brain.userForName(msg.envelope.user.name)
      assignee.email_address = email
      robot.brain.save()
      msg.send "Okay, I'll remember your email is #{email}"
    msg.finish()

  #   hubot phab <user> = <email> - associates user to email
  robot.respond /ph(?:ab)? ([^ ]*) *?= *?([^ ]*@.*)$/, (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phadmin', ->
      who = msg.match[1]
      email = msg.match[2]
      assignee = robot.brain.userForName(who)
      unless assignee
        msg.send "Sorry I have no idea who #{who} is. Did you mistype it?"
        msg.finish()
        return
      assignee.email_address = email
      msg.send "Okay, I'll remember #{who} email as #{email}"
    msg.finish()

  #   hubot phab assign Txx to <user> - assigns task Txxx to comeone
  robot.respond new RegExp(
    'ph(?:ab)?(?: assign)? (?:([^ ]+)(?: (?:to|on) (T)([0-9]+))?|(?:T([0-9]+) )?(?:to|on) ([^ ]+))$'
  ), (msg) ->
    phab.withPermission msg, msg.envelope.user, 'phuser', ->
      if msg.match[2] is 'T'
        who = msg.match[1]
        what = msg.match[3]
      else
        who = msg.match[5]
        what = msg.match[4]
      id = what ? phab.retrievePhid(msg.envelope.user)
      unless id?
        msg.send "Sorry, you don't have any task active right now."
        msg.finish()
        return
      assignee = robot.brain.userForName(who)
      if assignee?
        phab.withUser msg.envelope.user, assignee, (userPhid) ->
          if userPhid.error_info?
            msg.send userPhid.error_info
          else
            phab.assignTask id, userPhid, (body) ->
              if body['error_info']?
                msg.send "#{body['error_info']}"
              else
                msg.send "Ok. T#{id} is now assigned to #{assignee.name}"
              msg.finish()
      else
        msg.send "Sorry I don't know who is #{who}, can you .phab #{who} = <email>"
    msg.finish()

  #   hubot phab <project> search terms - searches for terms in project
  robot.respond /ph(?:ab)? ([^ ]+) (.+)$/, (msg) ->
    project = msg.match[1]
    terms = msg.match[2]
    phab.withProject project, (projectData) ->
      if projectData.error_info?
        msg.send projectData.error_info
      else
        phab.searchTask projectData.data.phid, terms, (payload) ->
          if payload.result.data.length is 0
            msg.send "There is no task matching '#{terms}' in project '#{projectData.data.name}'."
          else
            for task in payload.result.data
              msg.send "#{process.env.PHABRICATOR_URL}/T#{task.id} - #{task.fields['name']}"
            if payload.result.cursor.after?
              msg.send '... and there is more.'
    msg.finish()