#!/usr/bin/env node
'use strict'

const program = require('commander')
const Analytics = require('.')
const pkg = require('./package')

const toObject = str => JSON.parse(str)

program
  .version(pkg.version)
  .option('-w, --writeKey <key>', 'the Segment write key to use')
  .option('-h, --host <host>', 'the Segment API hostname to use')
  .option('-t, --type <type>', 'the Segment message type')

  .option('-u, --userId <id>', 'the user id to send the event as')
  .option('-a, --anonymousId <id>', 'the anonymous user id to send the event as')
  .option('-c, --context <context>', 'additional context for the event (JSON-encoded)', toObject)
  .option('-i, --integrations <integrations>', 'additional integrations for the event (JSON-encoded)', toObject)

  .option('-e, --event <event>', 'the event name to send with the event')
  .option('-p, --properties <properties>', 'the event properties to send (JSON-encoded)', toObject)

  .option('-n, --name <name>', 'name of the screen or page to send with the message')
  .option('-t, --traits <traits>', 'the identify/group traits to send (JSON-encoded)', toObject)
  .option('-g, --groupId <groupId>', 'the group id')
  .option('-pid, --previousId <previousId>', 'the previous id')

  .parse(process.argv)

if (program.args.length !== 0) {
  program.help()
}

const writeKey = program.writeKey
const host = program.host
const type = program.type

const userId = program.userId
const anonymousId = program.anonymousId
const context = program.context
const integrations = program.integrations

const event = program.event
const properties = program.properties
const name = program.name
const traits = program.traits
const groupId = program.groupId
const previousId = program.previousId

const run = (method, args) => {
  const analytics = new Analytics(writeKey, { host, flushAt: 1 })
  analytics[method](args, err => {
    if (err) {
      console.error(err.stack)
      process.exit(1)
    }
  })
}

switch (type) {
  case 'track':
    run('track', {
      event,
      properties,
      userId,
      anonymousId,
      context,
      integrations
    })
    break
  case 'page':
    run('page', {
      name,
      properties,
      userId,
      anonymousId,
      context,
      integrations
    })
    break
  case 'screen':
    run('screen', {
      name,
      properties,
      userId,
      anonymousId,
      context,
      integrations
    })
    break
  case 'identify':
    run('identify', {
      traits,
      userId,
      anonymousId,
      context,
      integrations
    })
    break
  case 'group':
    run('group', {
      groupId,
      traits,
      userId,
      anonymousId,
      context,
      integrations
    })
    break
  case 'alias':
    run('alias', {
      previousId,
      userId,
      anonymousId,
      context,
      integrations
    })
    break
  default:
    console.error('invalid type:', type)
    process.exit(1)
}