var test = require('tape')
  , cliPath = '../lib/cli'

test('parses multiple files', function(t) {
  t.plan(2)

  var cli = require(cliPath)
    , argv = ['example/file1.mermaid', 'file2.mermaid', 'file3.mermaid']
    , expect = ['example/file1.mermaid', 'file2.mermaid', 'file3.mermaid']

  cli.parse(argv, function(err, msg, opt) {
    t.equal(opt.files.length, 3, 'should have 3 parameters')
    t.deepEqual(opt.files, expect, 'should match expected values')

    t.end()
  })
})

test('defaults to png', function(t) {
  t.plan(2)

  var cli = require(cliPath)
    , argv = ['example/file1.mermaid']

  cli.parse(argv, function(err, msg, opt) {
    t.ok(opt.png, 'png is set by default')
    t.notOk(opt.svg, 'svg is not set by default')

    t.end()
  })
})

test('setting svg unsets png', function(t) {
  t.plan(2)

  var cli = require(cliPath)
    , argv = ['example/file1.mermaid', '-s']

  cli.parse(argv, function(err, msg, opt) {

    t.ok(opt.svg, 'svg is set when requested')
    t.notOk(opt.png, 'png is unset when svg is set')

    t.end()
  })
})

test('setting png and svg is allowed', function(t) {
  t.plan(2)

  var cli = require(cliPath)
    , argv = ['example/file1.mermaid', '-s', '-p']

  cli.parse(argv, function(err, msg, opt) {
    t.ok(opt.png, 'png is set when requested')
    t.ok(opt.svg, 'svg is set when requested')

    t.end()
  })
})

test('setting an output directory succeeds', function(t) {
  t.plan(1)

  var cli = require(cliPath)
    , argv = ['-o', 'example/']

  cli.parse(argv, function(err, msg, opt) {
    t.equal(opt.outputDir, 'example/', 'output directory is set')
    t.end()
  })
})

test('setting an output directory incorrectly causes an error', function(t) {
  t.plan(1)

  var cli = require(cliPath)
    , argv = ['-o']

  cli.parse(argv, function(err) {
    t.ok(err, 'an error is raised')

    t.end()
  })
})

test('a callback function is called after parsing', function(t) {
  t.plan(2)

  var cli = require(cliPath)
    , argv = ['example/test.mermaid']
    , expects = ['example/test.mermaid']

  cli.parse(argv, function(err, msg, opts) {
    t.ok(true, 'callback was called')
    t.deepEqual(argv, opts.files, 'options are as expected')

    t.end()
  })
})