chai      = require 'chai'
sinon     = require 'sinon'
sinonChai = require 'sinon-chai'
expect    = chai.expect




chai.use sinonChai
chai.should()




error = require '../../../oidc/error'




describe 'Error Response', ->


  {err,req,res,next,json,send} = {}


  describe 'with 302 status code', ->

    before ->
      err =
        error:              'error_code'
        error_description:  'description'
        redirect_uri:       'https://client.tld/callback'
        statusCode:         302

      req =
        app:
          get: ->
            'production'
        connectParams: {}

      res =
        render: sinon.spy()
        redirect: sinon.spy()

      next = sinon.spy()

      error err, req, res, next

    it 'should redirect', ->
      res.redirect.should.have.been.calledWith sinon.match(err.redirect_uri)

    it 'should provide an error', ->
      res.redirect.should.have.been.calledWith sinon.match('error=error_code')

    it 'should provide an error description', ->
      res.redirect.should.have.been.calledWith(
        sinon.match('&error_description=description')
      )

    it 'should not continue', ->
      next.should.not.have.been.called




  describe 'with 400 status code', ->

    before ->
      err =
        error:              'error_code'
        error_description:  'description'
        statusCode:         400

      req =
        app:
          get: ->
            'production'
        connectParams: {}

      json = sinon.spy()
      status = sinon.stub().returns { json: json }


      res =
        status: status
        set: sinon.spy (headers) -> res.headers = headers
        render: sinon.spy()
        redirect: sinon.spy()
      res.status.json = sinon.spy()

      next = sinon.spy()

      error err, req, res, next

    it 'should respond 400', ->
      res.status.should.have.been.calledWith 400

    it 'should respond with JSON', ->
      json.should.have.been.called

    it 'should set the Cache-Control header', ->
      res.headers['Cache-Control'].should.equal 'no-store'

    it 'should set the Pragma header', ->
      res.headers['Pragma'].should.equal 'no-cache'

    it 'should provide an error', ->
      json.should.have.been.calledWith(
        sinon.match({ error: 'error_code' })
      )

    it 'should provide an error description', ->
      json.should.have.been.calledWith(
        sinon.match({ error_description: 'description' })
      )




  describe 'with 401 status code', ->

    before ->
      err =
        realm:              'realm'
        error:              'error_code'
        error_description:  'description'
        statusCode:         401

      req =
        app:
          get: ->
            'production'
        connectParams: {}

      send = sinon.spy()
      status = sinon.stub().returns { send: send }

      res =
        status: status
        set: sinon.spy (headers) -> res.headers = headers
        render: sinon.spy()
        redirect: sinon.spy()

      next = sinon.spy()

      error err, req, res, next

    it 'should respond 401', ->
      res.status.should.have.been.calledWith 401

    it 'should respond "Unauthorized"', ->
      send.should.have.been.calledWith 'Unauthorized<br><br>description'

    it 'should challenge to authenticate', ->
      res.headers['WWW-Authenticate'].should.not.be.undefined

    it 'should provide a realm in the challenge', ->
      res.headers['WWW-Authenticate'].should.contain 'realm="realm"'

    it 'should provide an error in the challenge', ->
      res.headers['WWW-Authenticate'].should.contain 'error="error_code"'

    it 'should provide an error description in the challenge', ->
      res.headers['WWW-Authenticate'].should.contain 'error_description="description"'



  describe 'with 403 status code', ->

    before ->
      err =
        error:              'error_code'
        error_description:  'description'
        statusCode:         403

      req =
        app:
          get: ->
            'production'
        connectParams: {}

      send = sinon.spy()
      status = sinon.stub().returns { send: send }

      res =
        status: status
        set: sinon.spy (headers) -> res.headers = headers
        render: sinon.spy()
        redirect: sinon.spy()

      next = sinon.spy()

      error err, req, res, next

    it 'should respond 403', ->
      res.status.should.have.been.calledWith 403

    it 'should respond "Forbidden"', ->
      send.should.have.been.calledWith 'Forbidden'




  describe 'with other status code', ->

    before ->
      err =
        message:    'I am a teapot'
        statusCode: 418

      send = sinon.spy()
      status = sinon.stub().returns { send: send }

      req =
        app:
          get: ->
            'production'
        connectParams: {}
      res = { status: status }
      next = sinon.spy()
      error err, req, res, next


    it 'should respond with error status code', ->
      res.status.should.have.been.calledWith 418

    it 'should respond with error message', ->
      send.should.have.been.calledWith 'I am a teapot'




  describe 'with no error status code', ->

    before ->
      send = sinon.spy()
      status = sinon.stub().returns { send: send }

      err = {}
      req =
        app:
          get: ->
            'production'
        connectParams: {}
      res = { status: status }
      next = sinon.spy()
      error err, req, res, next

    it 'should respond 500', ->
      res.status.should.have.been.calledWith 500

    it 'should respond with error message', ->
      send.should.have.been.calledWith 'Internal Server Error'