import { Eltro as t, assert, stub, spy } from 'eltro'
import { Flaska, HttpError } from '../flaska.mjs'
import { createCtx, fakeHttp } from './helper.mjs'

const faker = fakeHttp()

t.describe('#constructor', function() {
  t.test('should be able to override the http', function() {    
    let flaska = new Flaska({}, faker)
    assert.strictEqual(flaska.http, faker)
  })
  
  t.test('it should have all the common verbs', function() {
    let flaska = new Flaska({}, faker)
    assert.ok(flaska.get)
    assert.strictEqual(typeof(flaska.get), 'function')
    assert.ok(flaska.post)
    assert.strictEqual(typeof(flaska.post), 'function')
    assert.ok(flaska.put)
    assert.strictEqual(typeof(flaska.put), 'function')
    assert.ok(flaska.delete)
    assert.strictEqual(typeof(flaska.delete), 'function')
    assert.ok(flaska.options)
    assert.strictEqual(typeof(flaska.options), 'function')
    assert.ok(flaska.patch)
    assert.strictEqual(typeof(flaska.patch), 'function')
  })
  
  t.test('the verbs GET and HEAD should be identical', function() {
    let flaska = new Flaska({}, faker)
    assert.ok(flaska.get)
    assert.strictEqual(typeof(flaska.get), 'function')
    assert.notOk(flaska.head)
    assert.ok(flaska.routers['HEAD'])
    assert.strictEqual(flaska.routers['GET'], flaska.routers['HEAD'])
  })

  t.test('should have before default header generator', function() {
    let flaska = new Flaska({}, faker)
    assert.strictEqual(flaska._before.length, 1)
    
    let ctx = {}

    flaska._before[0](ctx)

    assert.deepEqual(
      Object.keys(ctx.headers).sort(),
      ['Server','X-Content-Type-Options','Content-Security-Policy','Cross-Origin-Opener-Policy','Cross-Origin-Resource-Policy','Cross-Origin-Embedder-Policy','Date'].sort()
    )

    assert.strictEqual(ctx.headers['Server'], 'Flaska')
    assert.strictEqual(ctx.headers['X-Content-Type-Options'], 'nosniff')
    assert.strictEqual(ctx.headers['Content-Security-Policy'], `default-src 'self'; style-src 'self' 'unsafe-inline'; img-src * data: blob:; font-src 'self' data:; object-src 'none'; frame-ancestors 'none'`)
    assert.strictEqual(ctx.headers['Cross-Origin-Opener-Policy'], 'same-origin')
    assert.strictEqual(ctx.headers['Cross-Origin-Resource-Policy'], 'same-origin')
    assert.strictEqual(ctx.headers['Cross-Origin-Embedder-Policy'], 'require-corp')
    assert.ok(new Date(ctx.headers['Date']).getDate())

    assert.strictEqual(flaska._after.length, 0)
  })

  t.test('should have before ready setting headers on context if defaultHeaders is specified', function() {
    const defaultHeaders = {
      'Server': 'nginx/1.16.1',
      'Content-Type': 'applicat"ion/json; charset=utf-8',
      'Content-Length': '1646',
      'Connection': 'keep-alive',
      'vary': 'Origin',
      'Link': 'Link goes here',
      'X-Frame-Options': 'DENY',
      'X-Content-Type-Options': 'nosniff',
    }
    let flaska = new Flaska({
      defaultHeaders: defaultHeaders,
    }, faker)
    assert.strictEqual(flaska._before.length, 1)

    let ctx = {}

    flaska._before[0](ctx)
    
    let keys = Object.keys(defaultHeaders)

    assert.strictEqual(Object.keys(ctx.headers).length, keys.length + 1)
    for (let key of keys) {
      assert.strictEqual(ctx.headers[key], defaultHeaders[key])
    }
    assert.ok(ctx.headers['Date'])

    assert.strictEqual(flaska._after.length, 0)
  })

  t.test('should have before ready setting headers on context if appendHeaders is specified', function() {
    const appendHeaders = {
      'Server': 'nginx/1.16.1',
      'Herp': 'Derp',
    }
    let flaska = new Flaska({
      appendHeaders: appendHeaders,
    }, faker)
    assert.strictEqual(flaska._before.length, 1)

    let ctx = {}

    flaska._before[0](ctx)
    
    assert.deepEqual(
      Object.keys(ctx.headers).sort(),
      ['Server', 'Herp', 'X-Content-Type-Options','Content-Security-Policy','Cross-Origin-Opener-Policy','Cross-Origin-Resource-Policy','Cross-Origin-Embedder-Policy','Date'].sort()
    )

    assert.notStrictEqual(ctx.headers['Server'], 'Flaska')
    assert.strictEqual(ctx.headers['Server'], appendHeaders.Server)
    assert.strictEqual(ctx.headers['Herp'], 'Derp')
    assert.strictEqual(ctx.headers['X-Content-Type-Options'], 'nosniff')
    assert.strictEqual(ctx.headers['Content-Security-Policy'], `default-src 'self'; style-src 'self' 'unsafe-inline'; img-src * data: blob:; font-src 'self' data:; object-src 'none'; frame-ancestors 'none'`)
    assert.strictEqual(ctx.headers['Cross-Origin-Opener-Policy'], 'same-origin')
    assert.strictEqual(ctx.headers['Cross-Origin-Resource-Policy'], 'same-origin')
    assert.strictEqual(ctx.headers['Cross-Origin-Embedder-Policy'], 'require-corp')
    assert.ok(new Date(ctx.headers['Date']).getDate())

    assert.strictEqual(flaska._after.length, 0)
  })
})

t.describe('#_nonce', function() {
  t.test('should support nonce parameter with cached pre-filled entries', function() {
    let flaska = new Flaska({
      nonce: ['script-src', 'style-src'],
    }, faker)

    assert.ok(flaska._nonces)
    assert.strictEqual(flaska._noncesIndex + 1, flaska._nonces.length)
    assert.strictEqual(flaska._nonces.length, 25)
    assert.ok(flaska._nonces[flaska._noncesIndex])

    //Check they're all unique
    let set = new Set()
    flaska._nonces.forEach(function(entry) {
      set.add(entry)
    })
    assert.strictEqual(set.size, flaska._nonces.length)
    
    let ctx = createCtx()

    assert.notOk(ctx.state.nonce)

    let oldIndex = flaska._noncesIndex

    flaska._before[0](ctx)
    
    assert.ok(ctx.state.nonce)
    assert.strictEqual(flaska._noncesIndex, oldIndex - 1)
    assert.strictEqual(flaska._nonces[oldIndex], ctx.state.nonce)

    
    assert.strictEqual(ctx.headers['Server'], 'Flaska')
    assert.strictEqual(ctx.headers['X-Content-Type-Options'], 'nosniff')
    assert.strictEqual(ctx.headers['Content-Security-Policy'], `default-src 'self'; style-src 'self' 'unsafe-inline' 'nonce-${ctx.state.nonce}'; img-src * data: blob:; font-src 'self' data:; object-src 'none'; frame-ancestors 'none'; script-src 'nonce-${ctx.state.nonce}'`)
    assert.strictEqual(ctx.headers['Cross-Origin-Opener-Policy'], 'same-origin')
    assert.strictEqual(ctx.headers['Cross-Origin-Resource-Policy'], 'same-origin')
    assert.strictEqual(ctx.headers['Cross-Origin-Embedder-Policy'], 'require-corp')
    assert.ok(new Date(ctx.headers['Date']).getDate())
  })
  
  t.test('should always return nonce values even if it runs out in cache', function() {
    let flaska = new Flaska({
      nonce: ['script-src'],
      nonceCacheLength: 5,
    }, faker)
    let ctx = createCtx()

    for (let i = 0; i < 5; i++) {
      let nextNonce = flaska._nonces[flaska._noncesIndex]
      flaska._before[0](ctx)
      assert.strictEqual(ctx.state.nonce, nextNonce)
      assert.strictEqual(ctx.headers['Content-Security-Policy'], `default-src 'self'; style-src 'self' 'unsafe-inline'; img-src * data: blob:; font-src 'self' data:; object-src 'none'; frame-ancestors 'none'; script-src 'nonce-${ctx.state.nonce}'`)
    }

    assert.notOk(flaska._nonces[flaska._noncesIndex])
    
    flaska._before[0](ctx)
    
    assert.notOk(flaska._nonces[flaska._noncesIndex])
    assert.ok(ctx.state.nonce)

    for (let i = 0; i < flaska._nonces.length; i++) {
      assert.notStrictEqual(ctx.state.nonce, flaska._nonces[i])
    }

    assert.strictEqual(ctx.headers['Content-Security-Policy'], `default-src 'self'; style-src 'self' 'unsafe-inline'; img-src * data: blob:; font-src 'self' data:; object-src 'none'; frame-ancestors 'none'; script-src 'nonce-${ctx.state.nonce}'`)
  })

  t.test('should have after that regenerates lost hashes', function() {
    let flaska = new Flaska({
      nonce: ['script-src'],
      nonceCacheLength: 5,
    }, faker)
    let ctx = createCtx()

    assert.strictEqual(flaska._after.length, 1)

    //Check they're all unique
    let set = new Set()
    flaska._nonces.forEach(function(entry) {
      set.add(entry)
    })
    assert.strictEqual(set.size, 5)
    
    flaska._before[0](ctx)
    flaska._before[0](ctx)
    flaska._before[0](ctx)

    assert.strictEqual(flaska._noncesIndex, 1)
    
    flaska._after[0](ctx)
    assert.strictEqual(flaska._noncesIndex, 2)
    set.add(flaska._nonces[flaska._noncesIndex])
    assert.strictEqual(set.size, 6)

    flaska._after[0](ctx)
    assert.strictEqual(flaska._noncesIndex, 3)
    set.add(flaska._nonces[flaska._noncesIndex])
    assert.strictEqual(set.size, 7)

    flaska._after[0](ctx)
    assert.strictEqual(flaska._noncesIndex, 4)
    set.add(flaska._nonces[flaska._noncesIndex])
    assert.strictEqual(set.size, 8)
    
    flaska._after[0](ctx)
    assert.strictEqual(flaska._noncesIndex, 4)
    set.add(flaska._nonces[flaska._noncesIndex])
    assert.strictEqual(set.size, 8)
  })

  t.test('after should not generate keys outside range', function() {
    let flaska = new Flaska({
      nonce: ['script-src'],
      nonceCacheLength: 2,
    }, faker)
    let ctx = createCtx()

    assert.strictEqual(flaska._after.length, 1)

    //Check they're all unique
    let set = new Set()
    flaska._nonces.forEach(function(entry) {
      set.add(entry)
    })
    assert.strictEqual(set.size, 2)
    
    flaska._before[0](ctx)
    flaska._before[0](ctx)

    assert.strictEqual(flaska._noncesIndex, -1)
    
    flaska._before[0](ctx)
    assert.strictEqual(flaska._noncesIndex, -2)
    set.add(ctx.state.nonce)
    assert.strictEqual(set.size, 3)

    flaska._before[0](ctx)
    assert.strictEqual(flaska._noncesIndex, -3)
    set.add(ctx.state.nonce)
    assert.strictEqual(set.size, 4)

    flaska._before[0](ctx)
    assert.strictEqual(flaska._noncesIndex, -4)
    set.add(ctx.state.nonce)
    assert.strictEqual(set.size, 5)

    assert.strictEqual(Object.keys(flaska._nonces).length, 2)
    
    flaska._after[0](ctx)
    assert.strictEqual(flaska._noncesIndex, 0)
    set.add(flaska._nonces[flaska._noncesIndex])
    assert.strictEqual(set.size, 6)
    assert.strictEqual(Object.keys(flaska._nonces).length, 2)
    
    flaska._after[0](ctx)
    assert.strictEqual(flaska._noncesIndex, 1)
    set.add(flaska._nonces[flaska._noncesIndex])
    assert.strictEqual(set.size, 7)
    assert.strictEqual(Object.keys(flaska._nonces).length, 2)
    
    flaska._after[0](ctx)
    assert.strictEqual(flaska._noncesIndex, 1)
    set.add(flaska._nonces[flaska._noncesIndex])
    assert.strictEqual(set.size, 7)
    assert.strictEqual(Object.keys(flaska._nonces).length, 2)
  })
})

t.describe('#log', function() {
  t.test('default have a logger valid', function() {
    let flaska = new Flaska({}, faker)
    assert.strictEqual(typeof(flaska.log.error), 'function')
    assert.strictEqual(typeof(flaska.log.info), 'function')
    assert.strictEqual(typeof(flaska.log.warn), 'function')
  })
  
  t.test('allow overwriting in options', function() {
    const assertFunction = function() { return 1 }
    let flaska = new Flaska({ log: {
      error: assertFunction,
      info: assertFunction,
      warn: assertFunction,
      debug: assertFunction,
    } }, faker)
    assert.strictEqual(flaska.log.error, assertFunction)
    assert.strictEqual(flaska.log.info, assertFunction)
    assert.strictEqual(flaska.log.warn, assertFunction)
    assert.strictEqual(flaska.log.debug, assertFunction)
  })
})

let specialHandlers = ['on404', 'onerror', 'onreqerror', 'onreserror']

specialHandlers.forEach(function(type) {
  t.describe(`#${type}()`, function() {
    t.test('exist', function() {
      let flaska = new Flaska({}, faker)
      assert.strictEqual(typeof(flaska[type]), 'function')
    })
    
    t.test('validate handler', function() {
      let flaska = new Flaska({}, faker)
      assert.throws(function() { flaska[type]() }, /[Ff]unction/)
      assert.throws(function() { flaska[type]('asdf') }, /[Ff]unction/)
      assert.throws(function() { flaska[type]('123') }, /[Ff]unction/)
      assert.throws(function() { flaska[type]([]) }, /[Ff]unction/)
      assert.throws(function() { flaska[type]({}) }, /[Ff]unction/)
      assert.throws(function() { flaska[type](1234) }, /[Ff]unction/)
    })

    if (type !== 'on404') {
      t.test('should call ctx.log.error correctly', function() {
        const assertError = new Error('Samuraism')
        let flaska = new Flaska({}, faker)
        let ctx = createCtx()
        flaska['_' + type](assertError, ctx)
        assert.strictEqual(ctx.log.error.callCount, 1)
        assert.strictEqual(ctx.log.error.firstCall[0], assertError)
      })
    }

    if (type === 'onreqerror') {
      t.test('default sends 400 immediately', function() {
        let flaska = new Flaska({}, faker)
        let ctx = createCtx()
        flaska['_' + type](new Error(), ctx)
        assert.strictEqual(ctx.res.statusCode, 400)
        assert.strictEqual(ctx.res.end.callCount, 1)
        assert.strictEqual(ctx.res.end.firstCall.length, 0)
      })
    }

    t.test('register it into flaska', function() {
      const assertFunction = function() { return true }
      let flaska = new Flaska({}, faker)
      flaska[type](assertFunction)
      assert.strictEqual(flaska['_' + type], assertFunction)
    })
  })
})

t.describe('_on404', function() {
  t.test('default valid handling of context', function() {
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska._on404(ctx)
    assert.strictEqual(ctx.status, 404)
    assert.deepStrictEqual(ctx.body, {
      status: 404,
      message: 'Not Found',
    })
  })

  t.test('should do nothing if body is not null', function() {
    const assertBody = { a: 1 }
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)

    ctx.body = assertBody
    flaska._on404(ctx)
    assert.strictEqual(ctx.status, 200)
    assert.strictEqual(ctx.body, assertBody)
  })

  t.test('should do nothing if body is null but status is 204', function() {
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)

    ctx.status = 204
    ctx.body = null
    flaska._on404(ctx)
    assert.strictEqual(ctx.status, 204)
    assert.strictEqual(ctx.body, null)
  })
})

t.describe('_onerror', function() {
  t.test('a valid function', function() {
    let flaska = new Flaska({}, faker)
    assert.strictEqual(typeof(flaska._onerror), 'function')
  })

  t.test('default valid handling of context', function() {
    const assertError = new Error('should not be seen')
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, 500)
    assert.deepStrictEqual(ctx.body, {
      status: 500,
      message: 'Internal Server Error',
    })
  })

  t.test('default valid handling of HttpError', function() {
    const assertStatus = 431
    const assertBody = { a: 1 }
    const assertError = new HttpError(assertStatus, 'should not be seen', assertBody)
    
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, assertStatus)
    assert.strictEqual(ctx.body, assertBody)
  })

  t.test('default valid handling of HttpError with no body', function() {
    const assertStatus = 413
    const assertError = new HttpError(assertStatus, 'should not be seen')
    
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, assertStatus)
    assert.deepStrictEqual(ctx.body, {
      status: assertStatus,
      message: 'Payload Too Large',
    })
  })

  t.test('default valid handling of HttpError with missing status message', function() {
    const assertStatus = 432
    const assertError = new HttpError(assertStatus, 'should not be seen')
    
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, assertStatus)
    assert.deepStrictEqual(ctx.body, {
      status: assertStatus,
      message: 'Internal Server Error',
    })
  })
})

t.describe('_onreqerror', function() {
  t.test('a valid function', function() {
    let flaska = new Flaska({}, faker)
    assert.strictEqual(typeof(flaska._onreqerror), 'function')
  })

  t.test('default valid handling of aborted', function() {
    const assertError = new Error('aborted')
    let flaska = new Flaska({}, faker)
    let ctx = createCtx()
    flaska._onreqerror(assertError, ctx)
    assert.strictEqual(ctx.log.info.callCount, 0)
    assert.strictEqual(ctx.log.error.callCount, 0)
  })
})

t.describe('#devMode()', function() {
  t.test('turns on debug mode', function() {
    const assertErrorMessage = 'Fascination'
    const assertError = new Error(assertErrorMessage)
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, 500)
    assert.deepStrictEqual(ctx.body, {
      status: 500,
      message: 'Internal Server Error',
    })
    ctx = createCtx()
    flaska._backuperror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, 500)
    assert.deepStrictEqual(ctx.body, {
      status: 500,
      message: 'Internal Server Error',
    })
    flaska.devMode()
    ctx = createCtx()
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, 500)
    assert.strictEqual(ctx.body.status, 500)
    assert.match(ctx.body.message, /Internal Server Error/)
    assert.match(ctx.body.message, new RegExp(assertErrorMessage))
    assert.ok(ctx.body.stack)
    ctx = createCtx()
    flaska._backuperror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, 500)
    assert.strictEqual(ctx.body.status, 500)
    assert.match(ctx.body.message, /Internal Server Error/)
    assert.match(ctx.body.message, new RegExp(assertErrorMessage))
    assert.ok(ctx.body.stack)
  })

  t.test('default valid handling of HttpError', function() {
    const assertStatus = 431
    const assertBody = { a: 1 }
    const assertError = new HttpError(assertStatus, 'should not be seen', assertBody)
    
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska.devMode()
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, assertStatus)
    assert.strictEqual(ctx.body, assertBody)
  })

  t.test('default valid handling of HttpError with no body', function() {
    const assertStatus = 413
    const assertErrorMessage = 'A day'
    const assertError = new HttpError(assertStatus, assertErrorMessage)
    
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska.devMode()
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, assertStatus)
    assert.strictEqual(ctx.body.status, assertStatus)
    assert.match(ctx.body.message, /Payload Too Large/)
    assert.match(ctx.body.message, new RegExp(assertErrorMessage))
  })

  t.test('default valid handling of HttpError with missing status message', function() {
    const assertStatus = 432
    const assertErrorMessage = 'Jet Coaster Ride'
    const assertError = new HttpError(assertStatus, assertErrorMessage)
    
    let ctx = createCtx()
    let flaska = new Flaska({}, faker)
    flaska.devMode()
    flaska._onerror(assertError, ctx)
    assert.strictEqual(ctx.log.error.callCount, 1)
    assert.strictEqual(ctx.log.error.firstCall[0], assertError)
    assert.strictEqual(ctx.status, assertStatus)
    assert.strictEqual(ctx.body.status, assertStatus)
    assert.match(ctx.body.message, /Internal Server Error/)
  })
})

t.describe('#before()', function() {
  t.test('should throw if not a function', function() {
    let flaska = new Flaska({}, faker)
    assert.throws(function() { flaska.before() }, /[Ff]unction/)
    assert.throws(function() { flaska.before('asdf') }, /[Ff]unction/)
    assert.throws(function() { flaska.before('123') }, /[Ff]unction/)
    assert.throws(function() { flaska.before([]) }, /[Ff]unction/)
    assert.throws(function() { flaska.before({}) }, /[Ff]unction/)
    assert.throws(function() { flaska.before(1234) }, /[Ff]unction/)
  })

  t.test('add handler to preflight list', function() {
    const assertFunction = function() {}
    let flaska = new Flaska({}, faker)
    assert.ok(flaska._before)
    flaska.before(assertFunction)
    assert.strictEqual(flaska._before.length, 2)
    assert.strictEqual(flaska._before[1], assertFunction)
  })
})

t.describe('#beforeAsync()', function() {
  t.test('should throw if not a function', function() {
    let flaska = new Flaska({}, faker)
    assert.throws(function() { flaska.beforeAsync() }, /[Ff]unction/)
    assert.throws(function() { flaska.beforeAsync('asdf') }, /[Ff]unction/)
    assert.throws(function() { flaska.beforeAsync('123') }, /[Ff]unction/)
    assert.throws(function() { flaska.beforeAsync([]) }, /[Ff]unction/)
    assert.throws(function() { flaska.beforeAsync({}) }, /[Ff]unction/)
    assert.throws(function() { flaska.beforeAsync(1234) }, /[Ff]unction/)
  })

  t.test('add handler to preflight list', function() {
    const assertFunction = function() {}
    let flaska = new Flaska({}, faker)
    assert.ok(flaska._beforeAsync)
    flaska.beforeAsync(assertFunction)
    assert.strictEqual(flaska._beforeAsync.length, 1)
    assert.strictEqual(flaska._beforeAsync[0], assertFunction)
  })
})

t.describe('#after()', function() {
  t.test('should throw if not a function', function() {
    let flaska = new Flaska({}, faker)
    assert.throws(function() { flaska.after() }, /[Ff]unction/)
    assert.throws(function() { flaska.after('asdf') }, /[Ff]unction/)
    assert.throws(function() { flaska.after('123') }, /[Ff]unction/)
    assert.throws(function() { flaska.after([]) }, /[Ff]unction/)
    assert.throws(function() { flaska.after({}) }, /[Ff]unction/)
    assert.throws(function() { flaska.after(1234) }, /[Ff]unction/)
  })

  t.test('add handler to preflight list', function() {
    const assertFunction = function() {}
    let flaska = new Flaska({}, faker)
    assert.ok(flaska._after)
    flaska.after(assertFunction)
    assert.strictEqual(flaska._after.length, 1)
    assert.strictEqual(flaska._after[0], assertFunction)
  })
})

t.describe('#afterAsync()', function() {
  t.test('should throw if not a function', function() {
    let flaska = new Flaska({}, faker)
    assert.throws(function() { flaska.afterAsync() }, /[Ff]unction/)
    assert.throws(function() { flaska.afterAsync('asdf') }, /[Ff]unction/)
    assert.throws(function() { flaska.afterAsync('123') }, /[Ff]unction/)
    assert.throws(function() { flaska.afterAsync([]) }, /[Ff]unction/)
    assert.throws(function() { flaska.afterAsync({}) }, /[Ff]unction/)
    assert.throws(function() { flaska.afterAsync(1234) }, /[Ff]unction/)
  })

  t.test('add handler to preflight list', function() {
    const assertFunction = function() {}
    let flaska = new Flaska({}, faker)
    assert.ok(flaska._afterAsync)
    flaska.afterAsync(assertFunction)
    assert.strictEqual(flaska._afterAsync.length, 1)
    assert.strictEqual(flaska._afterAsync[0], assertFunction)
  })
})

t.describe('#compile()', function() {
  t.test('join all before together in one function', function() {
    let flaska = new Flaska({}, faker)
    flaska.before(function(ctx) { ctx.a = 1 })
    flaska.before(function(ctx) { ctx.b = 2 })
    flaska.before(function(ctx) { ctx.c = 3 })
    flaska.before(function(ctx) { ctx.d = 4 })
    assert.notOk(flaska._beforeCompiled)
    flaska.compile()
    assert.ok(flaska._beforeCompiled)
    assert.notOk(flaska._beforeAsyncCompiled)
    assert.strictEqual(typeof(flaska._beforeCompiled), 'function')
    let ctx = createCtx()
    flaska._beforeCompiled(ctx)
    assert.strictEqual(ctx.a, 1)
    assert.strictEqual(ctx.b, 2)
    assert.strictEqual(ctx.c, 3)
    assert.strictEqual(ctx.d, 4)
  })
  t.test('join all beforeAsync together in one function', function() {
    let flaska = new Flaska({}, faker)
    flaska.beforeAsync(function(ctx) { return Promise.resolve().then(function() { ctx.a = 1 }) })
    flaska.beforeAsync(function(ctx) { ctx.b = 2 })
    flaska.beforeAsync(function(ctx) { return new Promise(function(res) { ctx.c = 3; res() }) })
    flaska.beforeAsync(function(ctx) { ctx.d = 4 })
    assert.notOk(flaska._beforeAsyncCompiled)
    flaska.compile()
    assert.ok(flaska._beforeAsyncCompiled)
    assert.strictEqual(typeof(flaska._beforeAsyncCompiled), 'function')
    let ctx = createCtx()
    return flaska._beforeAsyncCompiled(ctx).then(function() {
      assert.strictEqual(ctx.a, 1)
      assert.strictEqual(ctx.b, 2)
      assert.strictEqual(ctx.c, 3)
      assert.strictEqual(ctx.d, 4)
    })
  })
  t.test('join all after together in one function', function() {
    let flaska = new Flaska({}, faker)
    flaska.after(function(ctx) { ctx.a = 1 })
    flaska.after(function(ctx) { ctx.b = 2 })
    flaska.after(function(ctx) { ctx.c = 3 })
    flaska.after(function(ctx) { ctx.d = 4 })
    assert.notOk(flaska._afterCompiled)
    flaska.compile()
    assert.ok(flaska._afterCompiled)
    assert.notOk(flaska._afterAsyncCompiled)
    assert.strictEqual(typeof(flaska._afterCompiled), 'function')
    let ctx = createCtx()
    flaska._afterCompiled(ctx)
    assert.strictEqual(ctx.a, 1)
    assert.strictEqual(ctx.b, 2)
    assert.strictEqual(ctx.c, 3)
    assert.strictEqual(ctx.d, 4)
  })
  t.test('join all afterAsync together in one function', function() {
    let flaska = new Flaska({}, faker)
    flaska.afterAsync(function(ctx) { return Promise.resolve().then(function() { ctx.a = 1 }) })
    flaska.afterAsync(function(ctx) { ctx.b = 2 })
    flaska.afterAsync(function(ctx) { return new Promise(function(res) { ctx.c = 3; res() }) })
    flaska.afterAsync(function(ctx) { ctx.d = 4 })
    assert.notOk(flaska._afterAsyncCompiled)
    flaska.compile()
    assert.ok(flaska._afterAsyncCompiled)
    assert.strictEqual(typeof(flaska._afterAsyncCompiled), 'function')
    let ctx = createCtx()
    return flaska._afterAsyncCompiled(ctx).then(function() {
      assert.strictEqual(ctx.a, 1)
      assert.strictEqual(ctx.b, 2)
      assert.strictEqual(ctx.c, 3)
      assert.strictEqual(ctx.d, 4)
    })
  })
})

t.describe('#handleMiddleware()', function() {
  t.test('should work with empty array', function() {
    let flaska = new Flaska({}, faker)
    flaska.handleMiddleware({}, [], 0)
  })

  t.test('should work with correct index', function() {
    let checkIsTrue = false
    let flaska = new Flaska({}, faker)
    flaska.handleMiddleware({}, [
      function() { throw new Error('should not be thrown') },
      function() { throw new Error('should not be thrown') },
      function() { throw new Error('should not be thrown') },
      function() { checkIsTrue = true },
    ], 3)
    assert.strictEqual(checkIsTrue, true)
  })

  t.test('should work with static functions', function() {
    const assertCtx = createCtx({ a: 1 })
    let checkCounter = 0
    let flaska = new Flaska({}, faker)
    flaska.handleMiddleware(assertCtx, [
      function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
      function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
      function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
      function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
      function(ctx) { assert.strictEqual(ctx, assertCtx); checkCounter++ },
    ], 0)
    assert.strictEqual(checkCounter, 5)
  })

  t.test('should work with random promises inbetween', function() {
    const assertCtx = createCtx({ a: 1 })
    let checkCounter = 0
    let flaska = new Flaska({}, faker)
    let result = flaska.handleMiddleware(assertCtx, [
      function(ctx) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 0); checkCounter++ },
      function(ctx) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 1); checkCounter++ },
      function(ctx) { return new Promise(function(res) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 2); checkCounter++; res() }) },
      function(ctx) { return Promise.resolve().then(function() { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 3); checkCounter++ }) },
      function(ctx) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 4); checkCounter++ },
      function(ctx) { return Promise.resolve().then(function() { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 5); checkCounter++ }) },
      function(ctx) { return Promise.resolve().then(function() { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 6); checkCounter++ }) },
      function(ctx) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 7); checkCounter++ },
      function(ctx) { assert.strictEqual(ctx, assertCtx); assert.strictEqual(checkCounter, 8); checkCounter++ },
    ], 0)
    assert.ok(result)
    assert.strictEqual(typeof(result.then), 'function')
    return result.then(function() {
      assert.strictEqual(checkCounter, 9)
    })
  })

  t.test('should work with rejected promises inbetween', async function() {
    const assertError = { a: 1 }
    let checkCounter = 0
    let flaska = new Flaska({}, faker)
    let err = await assert.isRejected(flaska.handleMiddleware({}, [
      function() { },
      function() { return new Promise(function(res, rej) { rej(assertError) }) },
      function() { throw new Error('should not be seen') },
    ], 0))
    assert.strictEqual(err, assertError)
    err = await assert.isRejected(flaska.handleMiddleware({}, [
      function() { },
      function() { return Promise.reject(assertError) },
      function() { throw new Error('should not be seen') },
    ], 0))
    assert.strictEqual(err, assertError)
    err = await assert.isRejected(flaska.handleMiddleware({}, [
      function() { },
      function() { return Promise.resolve() },
      function() { throw assertError },
    ], 0))
    assert.strictEqual(err, assertError)
  })
})

t.describe('#listen()', function() {
  t.test('it should throw if missing port', function() {
    let flaska = new Flaska({}, faker)
    assert.throws(function() { flaska.listen() }, /[Pp]ort/)
    assert.throws(function() { flaska.listen('asdf') }, /[Pp]ort/)
    assert.throws(function() { flaska.listen('123') }, /[Pp]ort/)
    assert.throws(function() { flaska.listen([]) }, /[Pp]ort/)
    assert.throws(function() { flaska.listen({}) }, /[Pp]ort/)
    assert.throws(function() { flaska.listen(function() {}) }, /[Pp]ort/)
  })

  t.test('it should automatically call compile', function() {
    let assertCalled = false
    let flaska = new Flaska({}, faker)
    flaska.compile = function() { assertCalled = true }
    flaska.listen(404)
    assert.strictEqual(assertCalled, true)
  })

  t.test('call http correctly', function() {
    const assertPort = 325897235
    const assertIp = 'asdga'
    const assertCb = function() { }
    let checkPort = null
    let checkIp = null
    let checkListenCb = null

    let testFaker = fakeHttp(null, function(port, ip, cb) {
      checkPort = port
      checkIp = ip
      checkListenCb = cb
    })
    let flaska = new Flaska({}, testFaker)
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    flaska.listen(assertPort, assertIp, assertCb)
    assert.strictEqual(checkPort, assertPort)
    assert.strictEqual(checkIp, assertIp)
    assert.strictEqual(checkListenCb, assertCb)
  })

  t.test('call http correctly if only port is specified', function() {
    const assertPort = 325897235
    const assertCb = function() { }
    let checkPort = null
    let checkIp = null
    let checkListenCb = null

    let testFaker = fakeHttp(null, function(port, ip, cb) {
      checkPort = port
      checkIp = ip
      checkListenCb = cb
    })
    let flaska = new Flaska({}, testFaker)
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    flaska.listen(assertPort, assertCb)
    assert.strictEqual(checkPort, assertPort)
    assert.strictEqual(checkIp, '::')
    assert.strictEqual(checkListenCb, assertCb)
  })

  t.test('register requestStart if no async', function() {
    let checkIsTrue = false
    let checkInternalThis = null
    let checkHandler = null

    let testFaker = fakeHttp(function(cb) {
      checkHandler = cb
    })
    let flaska = new Flaska({}, testFaker)
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    flaska.listen(404)
    assert.strictEqual(typeof(checkHandler), 'function')
    assert.notStrictEqual(checkHandler, flaska.requestStart)
    assert.notStrictEqual(checkIsTrue, true)
    assert.notStrictEqual(checkInternalThis, flaska)
    checkHandler()
    assert.strictEqual(checkIsTrue, true)
    assert.strictEqual(checkInternalThis, flaska)
  })
})

t.describe('#listenAsync()', function() {
  t.test('it should throw if missing port', async function() {
    let flaska = new Flaska({}, faker)

    let tests = [
      undefined,
      'asdf',
      '123',
      [],
      {},
      function() {},
    ]
    let errors = await Promise.all(tests.map(x => assert.isRejected(flaska.listenAsync(x))))
    assert.strictEqual(errors.length, tests.length)
    for (let i = 0; i < errors.length; i++) {
      assert.match(errors[i].message, /[Pp]ort/)
    }
  })

  t.test('it should automatically call compile', async function() {
    let assertCalled = false
    let flaska = new Flaska({}, faker)
    flaska.compile = function() { assertCalled = true }
    await flaska.listenAsync(404)
    assert.strictEqual(assertCalled, true)
  })

  t.test('call http correctly', async function() {
    const assertPort = 325897235
    const assertIp = 'asdf'
    let checkPort = null
    let checkIp = null

    let testFaker = fakeHttp(null, function(port, ip, cb) {
      checkPort = port
      checkIp = ip
      cb()
    })

    let flaska = new Flaska({}, testFaker)
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    await flaska.listenAsync(assertPort, assertIp)
    assert.strictEqual(checkPort, assertPort)
    assert.strictEqual(checkIp, assertIp)
  })

  t.test('call http and listen correctly if only port specified', async function() {
    const assertPort = 325897235
    let checkPort = null
    let checkIp = null

    let testFaker = fakeHttp(null, function(port, ip, cb) {
      checkPort = port
      checkIp = ip
      cb()
    })
    let flaska = new Flaska({}, testFaker)
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    await flaska.listenAsync(assertPort)
    assert.strictEqual(checkPort, assertPort)
    assert.strictEqual(checkIp, '::')
  })
  
  t.test('call http and listenAsync correctly if supported', async function() {
    const assertPort = 4632
    const assertIp = 'asdf'
    const assertReturns = { a: 1 }
    const stubListenAsync = stub().resolves(assertReturns)

    let flaska = new Flaska({}, {
      createServer: function() {
        return {
          listenAsync: stubListenAsync,
          on: stub(),
        }
      }
    })
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    let res = await flaska.listenAsync(assertPort, assertIp)
    assert.strictEqual(res, assertReturns)
    assert.strictEqual(stubListenAsync.firstCall[0], assertPort)
    assert.strictEqual(stubListenAsync.firstCall[1], assertIp)
  })
  
  t.test('call http and listenAsync correctly if supported and ip is null', async function() {
    const assertPort = 325897235
    const assertReturns = { a: 1 }
    const stubListenAsync = stub().resolves(assertReturns)

    let flaska = new Flaska({}, {
      createServer: function() {
        return {
          listenAsync: stubListenAsync,
          on: stub(),
        }
      }
    })
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    let res = await flaska.listenAsync(assertPort)
    assert.strictEqual(res, assertReturns)
    assert.strictEqual(stubListenAsync.firstCall[0], assertPort)
    assert.strictEqual(stubListenAsync.firstCall[1], '::')
  })

  t.test('register requestStart if no async', async function() {
    let checkIsTrue = false
    let checkInternalThis = null
    let checkHandler = null

    let testFaker = fakeHttp(function(cb) {
      checkHandler = cb
    })
    let flaska = new Flaska({}, testFaker)
    assert.ok(flaska.requestStart)
    flaska.requestStart = function() {
      checkInternalThis = this
      checkIsTrue = true
    }
    await flaska.listenAsync(404)
    assert.strictEqual(typeof(checkHandler), 'function')
    assert.notStrictEqual(checkHandler, flaska.requestStart)
    assert.notStrictEqual(checkIsTrue, true)
    assert.notStrictEqual(checkInternalThis, flaska)
    checkHandler()
    assert.strictEqual(checkIsTrue, true)
    assert.strictEqual(checkInternalThis, flaska)
  })
})

t.describe('#closeAsync()', function() {
  t.test('it return if server is null', function() {
    let flaska = new Flaska()
    flaska.server = null
    return flaska.closeAsync()
  })

  t.test('it should call close on server correctly', async function() {
    const assertError = new Error('Pirate Fight')
    let flaska = new Flaska()
    flaska.server = {
      close: stub()
    }
    flaska.server.close.returnWith(function(cb) {
      cb(assertError)
    })
    let err = await assert.isRejected(flaska.closeAsync())
    assert.strictEqual(err, assertError)
  })

  t.test('should otherwise work', async function() {
    let flaska = new Flaska()
    flaska.server = {
      close: stub()
    }
    flaska.server.close.returnWith(function(cb) {
      cb(null, { a: 1 })
    })
    let res = await flaska.closeAsync()
    assert.notOk(res)
  })
})