import assert from 'assert'
import * as errors from '../src'

const { convert } = errors

describe('@feathersjs/errors', () => {
  describe('errors.convert', () => {
    it('converts objects to feathers errors', () => {
      const error = convert({
        name: 'BadRequest',
        message: 'Hi',
        expando: 'Me'
      })

      assert.strictEqual(error.message, 'Hi')
      assert.strictEqual(error.expando, 'Me')
      assert.ok(error instanceof errors.BadRequest)
    })

    it('converts other object to error', () => {
      let error = convert({
        message: 'Something went wrong'
      })

      assert.ok(error instanceof Error)
      assert.strictEqual(error.message, 'Something went wrong')

      error = convert('Something went wrong')

      assert.ok(error instanceof Error)
      assert.strictEqual(error.message, 'Something went wrong')
    })

    it('converts nothing', () => assert.strictEqual(convert(null), null))
  })

  describe('error types', () => {
    it('Bad Request', () => {
      assert.notStrictEqual(typeof errors.BadRequest, 'undefined', 'has BadRequest')
    })

    it('Not Authenticated', () => {
      assert.notStrictEqual(typeof errors.NotAuthenticated, 'undefined', 'has NotAuthenticated')
    })

    it('Payment Error', () => {
      assert.notStrictEqual(typeof errors.PaymentError, 'undefined', 'has PaymentError')
    })

    it('Forbidden', () => {
      assert.notStrictEqual(typeof errors.Forbidden, 'undefined', 'has Forbidden')
    })

    it('Not Found', () => {
      assert.notStrictEqual(typeof errors.NotFound, 'undefined', 'has NotFound')
    })

    it('Method Not Allowed', () => {
      assert.notStrictEqual(typeof errors.MethodNotAllowed, 'undefined', 'has MethodNotAllowed')
    })

    it('Not Acceptable', () => {
      assert.notStrictEqual(typeof errors.NotAcceptable, 'undefined', 'has NotAcceptable')
    })

    it('Timeout', () => {
      assert.notStrictEqual(typeof errors.Timeout, 'undefined', 'has Timeout')
    })

    it('Conflict', () => {
      assert.notStrictEqual(typeof errors.Conflict, 'undefined', 'has Conflict')
    })

    it('Gone', () => {
      assert.notStrictEqual(typeof errors.Gone, 'undefined', 'has Gone')
    })

    it('Length Required', () => {
      assert.notStrictEqual(typeof errors.LengthRequired, 'undefined', 'has LengthRequired')
    })

    it('Unprocessable', () => {
      assert.notStrictEqual(typeof errors.Unprocessable, 'undefined', 'has Unprocessable')
    })

    it('Too Many Requests', () => {
      assert.notStrictEqual(typeof errors.TooManyRequests, 'undefined', 'has TooManyRequests')
    })

    it('General Error', () => {
      assert.notStrictEqual(typeof errors.GeneralError, 'undefined', 'has GeneralError')
    })

    it('Not Implemented', () => {
      assert.notStrictEqual(typeof errors.NotImplemented, 'undefined', 'has NotImplemented')
    })

    it('Bad Gateway', () => {
      assert.notStrictEqual(typeof errors.BadGateway, 'undefined', 'has BadGateway')
    })

    it('Unavailable', () => {
      assert.notStrictEqual(typeof errors.Unavailable, 'undefined', 'has Unavailable')
    })

    it('400', () => {
      assert.notStrictEqual(typeof errors.errors[400], 'undefined', 'has BadRequest alias')
    })

    it('401', () => {
      assert.notStrictEqual(typeof errors.errors[401], 'undefined', 'has NotAuthenticated alias')
    })

    it('402', () => {
      assert.notStrictEqual(typeof errors.errors[402], 'undefined', 'has PaymentError alias')
    })

    it('403', () => {
      assert.notStrictEqual(typeof errors.errors[403], 'undefined', 'has Forbidden alias')
    })

    it('404', () => {
      assert.notStrictEqual(typeof errors.errors[404], 'undefined', 'has NotFound alias')
    })

    it('405', () => {
      assert.notStrictEqual(typeof errors.errors[405], 'undefined', 'has MethodNotAllowed alias')
    })

    it('406', () => {
      assert.notStrictEqual(typeof errors.errors[406], 'undefined', 'has NotAcceptable alias')
    })

    it('408', () => {
      assert.notStrictEqual(typeof errors.errors[408], 'undefined', 'has Timeout alias')
    })

    it('409', () => {
      assert.notStrictEqual(typeof errors.errors[409], 'undefined', 'has Conflict alias')
    })

    it('410', () => {
      assert.notStrictEqual(typeof errors.errors[410], 'undefined', 'has Gone alias')
    })

    it('411', () => {
      assert.notStrictEqual(typeof errors.errors[411], 'undefined', 'has LengthRequired alias')
    })

    it('422', () => {
      assert.notStrictEqual(typeof errors.errors[422], 'undefined', 'has Unprocessable alias')
    })

    it('429', () => {
      assert.notStrictEqual(typeof errors.errors[429], 'undefined', 'has TooManyRequests alias')
    })

    it('500', () => {
      assert.notStrictEqual(typeof errors.errors[500], 'undefined', 'has GeneralError alias')
    })

    it('501', () => {
      assert.notStrictEqual(typeof errors.errors[501], 'undefined', 'has NotImplemented alias')
    })

    it('502', () => {
      assert.notStrictEqual(typeof errors.errors[502], 'undefined', 'has BadGateway alias')
    })

    it('503', () => {
      assert.notStrictEqual(typeof errors.errors[503], 'undefined', 'has Unavailable alias')
    })

    it('instantiates every error', () => {
      const index: any = errors.errors

      Object.keys(index).forEach((name) => {
        const E = index[name]

        if (E) {
          // tslint:disable-next-line
          new E('Something went wrong')
        }
      })
    })
  })

  describe('inheritance', () => {
    it('instanceof differentiates between error types', () => {
      const error = new errors.MethodNotAllowed()
      assert.ok(!(error instanceof errors.BadRequest))
    })

    it('follows the prototypical inheritance chain', () => {
      const error = new errors.MethodNotAllowed()
      assert.ok(error instanceof Error)
      assert.ok(error instanceof errors.FeathersError)
    })

    it('has the correct constructors', () => {
      const error = new errors.NotFound()
      assert.ok(error.constructor === errors.NotFound)
      assert.ok(error.constructor.name === 'NotFound')
    })
  })

  describe('successful error creation', () => {
    describe('without custom message', () => {
      it('default error', () => {
        const error = new errors.GeneralError()
        assert.strictEqual(error.code, 500)
        assert.strictEqual(error.className, 'general-error')
        assert.strictEqual(error.message, 'Error')
        assert.strictEqual(error.data, undefined)
        assert.strictEqual(error.errors, undefined)
        assert.notStrictEqual(error.stack, undefined)
        assert.strictEqual(error instanceof errors.GeneralError, true)
        assert.strictEqual(error instanceof errors.FeathersError, true)
      })

      it('can wrap an existing error', () => {
        const error = new errors.BadRequest(new Error())
        assert.strictEqual(error.code, 400)
        assert.strictEqual(error.message, 'Error')
      })

      it('with multiple errors', () => {
        const data = {
          errors: {
            email: 'Email Taken',
            password: 'Invalid Password'
          },
          foo: 'bar'
        }

        const error = new errors.BadRequest(data)
        assert.strictEqual(error.code, 400)
        assert.strictEqual(error.message, 'Error')
        assert.deepStrictEqual(error.errors, {
          email: 'Email Taken',
          password: 'Invalid Password'
        })
        assert.deepStrictEqual(error.data, { foo: 'bar' })
      })

      it('with data', () => {
        const data = {
          email: 'Email Taken',
          password: 'Invalid Password'
        }

        const error = new errors.GeneralError(data)
        assert.strictEqual(error.code, 500)
        assert.strictEqual(error.message, 'Error')
        assert.deepStrictEqual(error.data, data)
      })
    })

    describe('with custom message', () => {
      it('contains our message', () => {
        const error = new errors.BadRequest('Invalid Password')
        assert.strictEqual(error.code, 400)
        assert.strictEqual(error.message, 'Invalid Password')
      })

      it('can wrap an existing error', () => {
        const error = new errors.BadRequest(new Error('Invalid Password'))
        assert.strictEqual(error.code, 400)
        assert.strictEqual(error.message, 'Invalid Password')
      })

      it('with data', () => {
        const data = {
          email: 'Email Taken',
          password: 'Invalid Password'
        }

        const error = new errors.GeneralError('Custom Error', data)
        assert.strictEqual(error.code, 500)
        assert.strictEqual(error.message, 'Custom Error')
        assert.deepStrictEqual(error.data, data)
      })

      it('with multiple errors', () => {
        const data = {
          errors: {
            email: 'Email Taken',
            password: 'Invalid Password'
          },
          foo: 'bar'
        }

        const error = new errors.BadRequest(data)

        assert.strictEqual(error.code, 400)
        assert.strictEqual(error.message, 'Error')
        assert.deepStrictEqual(error.errors, {
          email: 'Email Taken',
          password: 'Invalid Password'
        })
        assert.deepStrictEqual(error.data, { foo: 'bar' })
      })
    })

    it('can return JSON', () => {
      const data = {
        errors: {
          email: 'Email Taken',
          password: 'Invalid Password'
        },
        foo: 'bar'
      }

      const expected =
        '{"name":"GeneralError","message":"Custom Error","code":500,"className":"general-error","data":{"foo":"bar"},"errors":{"email":"Email Taken","password":"Invalid Password"}}'

      const error = new errors.GeneralError('Custom Error', data)
      assert.strictEqual(JSON.stringify(error), expected)
    })

    it('can handle immutable data', () => {
      const data = {
        errors: {
          email: 'Email Taken',
          password: 'Invalid Password'
        },
        foo: 'bar'
      }

      const error = new errors.GeneralError('Custom Error', Object.freeze(data))
      assert.strictEqual(error.data.errors, undefined)
      assert.deepStrictEqual(error.data, { foo: 'bar' })
    })

    it('allows arrays as data', () => {
      const data = [
        {
          hello: 'world'
        }
      ]

      const error = new errors.GeneralError('Custom Error', data)
      assert.strictEqual(error.data.errors, undefined)
      assert.ok(Array.isArray(error.data))
      assert.deepStrictEqual(error.data, [{ hello: 'world' }])
    })

    it('can be instantiated with `null` (#2789)', () => {
      const err = new errors.BadRequest(null, {})
      assert.strictEqual(err.message, 'Error')
    })

    it('has proper stack trace (#78)', () => {
      try {
        throw new errors.NotFound('Not the error you are looking for')
      } catch (e: any) {
        const text = 'NotFound: Not the error you are looking for'

        assert.strictEqual(e.stack.indexOf(text), 0)

        assert.ok(e.stack.indexOf('index.test.ts') !== -1)

        const oldCST = Error.captureStackTrace

        delete Error.captureStackTrace

        try {
          throw new errors.NotFound('Not the error you are looking for')
        } catch (e: any) {
          assert.ok(e)
          Error.captureStackTrace = oldCST
        }
      }
    })
  })
})