import { Eltro as t, spy, assert} from 'eltro'
import { Flaska } from '../flaska.mjs'
import { fakeHttp, createReq, createRes } from './helper.mjs'

const faker = fakeHttp()

t.describe('#requestStart()', function() {
  t.test('calls on correct events on both req and res', function(cb) {
    const assertErrorOne = new Error('Erics Birth')
    const assertErrorTwo = new Error('Contactic Eric')
    const onReqError = spy()
    const onResError = spy()
    const onEnded = spy()
    const assertReq = createReq({ url: '', a: 1 })
    const assertRes = createRes({ b: 2 })
    let flaska = new Flaska({}, faker)

    flaska.onreqerror(onReqError)
    flaska.onreserror(onResError)
    flaska.requestEnded = onEnded

    flaska.requestEnd = function(err, ctx) {
      try {
        assert.ok(err)
        assert.strictEqual(assertReq.on.callCount, 2)
        assert.strictEqual(assertRes.on.callCount, 2)


        assert.strictEqual(assertRes.on.firstCall[0], 'error')
        assert.strictEqual(typeof(assertRes.on.firstCall[1]), 'function')
        assertRes.on.firstCall[1](assertErrorTwo, ctx)
        assert.strictEqual(onResError.callCount, 1)
        assert.strictEqual(onResError.firstCall[0], assertErrorTwo)
        assert.strictEqual(onResError.firstCall[1], ctx)
        
        assert.strictEqual(assertRes.on.secondCall[0], 'finish')
        assert.strictEqual(typeof(assertRes.on.secondCall[1]), 'function')
        assert.strictEqual(onEnded.callCount, 0)
        assertRes.on.secondCall[1]()
        assert.strictEqual(onEnded.callCount, 1)
        assert.strictEqual(onEnded.firstCall[0], ctx)

        assert.strictEqual(assertReq.on.firstCall[0], 'error')
        assert.strictEqual(typeof(assertReq.on.firstCall[1]), 'function')
        assertReq.on.firstCall[1](assertErrorOne, ctx)
        assert.strictEqual(onReqError.callCount, 1)
        assert.strictEqual(onReqError.firstCall[0], assertErrorOne)
        assert.strictEqual(onReqError.firstCall[1], ctx)
        
        assert.strictEqual(assertReq.on.secondCall[0], 'aborted')
        assert.strictEqual(typeof(assertReq.on.secondCall[1]), 'function')
        assert.notStrictEqual(ctx.aborted, false)
        assertReq.on.secondCall[1]()
        assert.strictEqual(ctx.aborted, true)

        // Test abort and close

        cb()
      } catch (err) { cb(err) }
    }
    flaska._beforeCompiled = function(ctx) {
      throw new Error()
    }

    flaska.requestStart(assertReq, assertRes)
  })

  t.test('calls beforeCompiled correctly', function(cb) {
    const assertError = new Error('test')
    const assertReq = createReq({ url: '', a: 1 })
    const assertRes = createRes({ b: 2 })
    let flaska = new Flaska({}, faker)

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.strictEqual(err, assertError)
        assert.deepStrictEqual(ctx.state, {})
        assert.strictEqual(ctx.req, assertReq)
        assert.strictEqual(ctx.res, assertRes)
        cb()
      } catch (err) { cb(err) }
    }
    flaska._beforeCompiled = function(ctx) {
      assert.strictEqual(ctx.req, assertReq)
      assert.strictEqual(ctx.res, assertRes)
      throw assertError
    }

    flaska.requestStart(assertReq, assertRes)
  })

  t.test('calls beforeAsyncCompiled correctly if defined', function(cb) {
    const assertError = new Error('test')
    const assertReq = createReq({ url: '', a: 1 })
    const assertRes = createRes({ b: 2 })
    let flaska = new Flaska({}, faker)
    flaska.compile()

    flaska._beforeAsyncCompiled = function(ctx) {
      assert.strictEqual(ctx.req, assertReq)
      assert.strictEqual(ctx.res, assertRes)
      return Promise.resolve().then(function() { return Promise.reject(assertError) })
    }

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.strictEqual(err, assertError)
        assert.deepStrictEqual(ctx.state, {})
        assert.strictEqual(ctx.req, assertReq)
        assert.strictEqual(ctx.res, assertRes)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(assertReq, assertRes)
  })

  t.test('calls correct router with correct url and context', function(cb) {
    const assertError = new Error('test')
    const assertMethod = 'test'
    const assertPath = '/test/me'
    const assertSearch = '?asdf=test'
    const assertLog = { info: function() {}, error: function() {} }
    let flaska = new Flaska({ log: assertLog }, faker)
    assert.strictEqual(flaska.log, assertLog)
    flaska.compile()

    flaska.routers.test = {
      match: function(path) {
        assert.strictEqual(path, assertPath)
        throw assertError
      }
    }

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.strictEqual(err, assertError)
        assert.strictEqual(ctx.url, assertPath)
        assert.strictEqual(ctx.search, assertSearch)
        assert.strictEqual(ctx.method, assertMethod)
        assert.strictEqual(ctx.status, 200)
        assert.strictEqual(ctx.body, null)
        assert.strictEqual(ctx.type, null)
        assert.strictEqual(ctx.length, null)
        assert.strictEqual(ctx.log, assertLog)
        assert.ok(ctx.query)
        assert.ok(ctx.query.get)
        assert.ok(ctx.query.set)
        assert.ok(ctx.query.delete)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: assertPath + assertSearch,
      method: assertMethod,
    }), createRes())
  })

  t.test('calls correct router with correct url and context if beforeAsync', function(cb) {
    const assertError = new Error('test')
    const assertMethod = 'test'
    const assertPath = '/test/me'
    const assertSearch = '?asdf=test'
    let flaska = new Flaska({}, faker)
    flaska.compile()
    flaska._beforeAsyncCompiled = function() { return Promise.resolve() }

    flaska.routers.test = {
      match: function(path) {
        assert.strictEqual(path, assertPath)
        throw assertError
      }
    }

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.strictEqual(err, assertError)
        assert.strictEqual(ctx.url, assertPath)
        assert.strictEqual(ctx.search, assertSearch)
        assert.strictEqual(ctx.method, assertMethod)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: assertPath + assertSearch,
      method: assertMethod,
    }), createRes())
  })

  t.test('calls handleMiddleware correctly', function(cb) {
    const assertError = new Error('test')
    const assertMiddles = [1, 2]
    const assertParams = { a: 1, b: 2 }
    let checkMiddleCtx = null

    let flaska = new Flaska({}, faker)
    flaska.compile()

    flaska.routers.GET.match = function() {
      return {
        handler: function() {},
        middlewares: assertMiddles,
        params: assertParams,
      }
    }
    flaska.handleMiddleware = function(ctx, middles, index) {
      assert.strictEqual(index, 0)
      assert.strictEqual(middles, assertMiddles)
      checkMiddleCtx = ctx
      throw assertError
    }

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(err, assertError)
        assert.strictEqual(ctx, checkMiddleCtx)
        assert.strictEqual(ctx.params, assertParams)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '',
      method: 'GET',
    }), createRes({}))
  })

  t.test('calls route handler correctly', function(cb) {
    const assertError = new Error('test')
    let checkHandlerCtx = null
    let handler = function(ctx) {
      assert.strictEqual(ctx.params.id, 'test')
      checkHandlerCtx = ctx
      throw assertError
    }
    
    let flaska = new Flaska({}, faker)
    flaska.get('/:id', handler)
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(err, assertError)
        assert.strictEqual(ctx, checkHandlerCtx)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test',
      method: 'GET',
    }), createRes())
  })

  t.test('calls 404 if route handler is not found', function(cb) {
    const on404Error = spy()

    let handler = function() {
      throw new Error('should not be called')
    }
    
    let flaska = new Flaska({}, faker)
    flaska.on404(on404Error)
    flaska.get('/test', function() { throw new Error('should not be called') })
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err) return cb(err)

      try {
        assert.ok(ctx)
        assert.strictEqual(on404Error.callCount, 1)
        assert.strictEqual(on404Error.firstCall[0], ctx)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/nope',
      method: 'GET',
    }), createRes())
  })
  
  t.test('calls 404 if route handler is not found and supports promise', function(cb) {
    let checkCtx = null
    const assertError = new Error('should be seen')
    const on404Error = function(ctx) {
      checkCtx = ctx
      return Promise.resolve().then(function() { return Promise.reject(assertError) })
    }
    
    let flaska = new Flaska({}, faker)
    flaska.on404(on404Error)
    flaska.get('/test', function() { throw new Error('should not be called') })
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(ctx, checkCtx)
        assert.strictEqual(err, assertError)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/nope',
      method: 'GET',
    }), createRes())
  })

  t.test(`should handle unexpected errors in on404 correctly`, function(cb) {
    const assertError = new Error('should be seen')
    let checkCtx = null
    
    let flaska = new Flaska({}, faker)
    flaska.on404(function(ctx) {
      checkCtx = ctx
      throw assertError
    })
    flaska.get('/test', function() { throw new Error('should not be called') })
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(ctx, checkCtx)
        assert.strictEqual(err, assertError)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/nope',
      method: 'GET',
    }), createRes())
  })

  t.test(`should handle unexpected errors in middleware correctly`, function(cb) {
    const assertError = new Error('should be seen')
    let checkCtx = null
    
    let flaska = new Flaska({}, faker)
    let middles = [function(ctx) {
      checkCtx = ctx
      throw assertError
    }]
    flaska.get('/test', middles, function() { throw new Error('should not be called') })
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(ctx, checkCtx)
        assert.strictEqual(err, assertError)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test',
      method: 'GET',
    }), createRes())
  })

  t.test('should work with synchronous handler', function(cb) {
    const assertBody = { a: 1 }
    let handler = function(ctx) {
      assert.strictEqual(ctx.params.path, 'test/something/here')
      ctx.body = assertBody
    }
    
    let flaska = new Flaska({}, faker)
    flaska.get('/::path', handler)
    flaska.compile()
    flaska.handleMiddleware = function() {
      throw new Error('should not be called')
    }

    flaska.requestEnd = function(err, ctx) {
      try {
        assert.notOk(err)
        assert.ok(ctx)
        assert.strictEqual(ctx.body, assertBody)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test/something/here',
      method: 'GET',
    }), createRes())
  })

  t.test('calls handleMiddleware correctly if is promise', function(cb) {
    const assertError = new Error('test')
    const assertMiddles = [1]

    let flaska = new Flaska({}, faker)
    flaska.compile()

    flaska.routers.GET.match = function() {
      return {
        handler: function() {},
        middlewares: assertMiddles,
      }
    }
    flaska.handleMiddleware = function() {
      return Promise.resolve().then(function() { return Promise.reject(assertError) })
    }

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(err, assertError)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '',
      method: 'GET',
    }), createRes())
  })

  t.test('calls route handler correctly with promise middle', function(cb) {
    const assertError = new Error('test')
    let checkHandlerCtx = null
    let handler = function(ctx) {
      assert.strictEqual(ctx.params.id, 'test')
      checkHandlerCtx = ctx
      throw assertError
    }
    
    let flaska = new Flaska({}, faker)
    flaska.get('/:id', [function() { return Promise.resolve() }], handler)
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(err, assertError)
        assert.strictEqual(ctx, checkHandlerCtx)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test',
      method: 'GET',
    }), createRes())
  })

  t.test('calls promise route handler correctly with promise middle', function(cb) {
    const assertError = new Error('test')
    let checkHandlerCtx = null
    let handler = function(ctx) {
      assert.strictEqual(ctx.params.id, 'test')
      checkHandlerCtx = ctx
      return Promise.resolve().then(function() { return Promise.reject(assertError) })
    }
    
    let flaska = new Flaska({}, faker)
    flaska.get('/:id', [function() { return Promise.resolve() }], handler)
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(err, assertError)
        assert.strictEqual(ctx, checkHandlerCtx)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test',
      method: 'GET',
    }), createRes())
  })

  t.test('should work with promise middle and promise handler correctly', function(cb) {
    const assertBody = { a: 1 }
    const assertState = { b: 2 }
    let middle = function(ctx) {
      return Promise.resolve().then(function() {
        ctx.state = assertState
      })
    }
    let handler = function(ctx) {
      assert.strictEqual(ctx.params.path, 'test/something/here')
      assert.strictEqual(ctx.state, assertState)

      return Promise.resolve().then(function() {
        ctx.body = assertBody
      })
    }
    
    let flaska = new Flaska({}, faker)
    flaska.get('/::path', [middle], handler)
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      try {
        assert.notOk(err)
        assert.ok(ctx)
        assert.strictEqual(ctx.body, assertBody)
        assert.strictEqual(ctx.state, assertState)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test/something/here',
      method: 'GET',
    }), createRes())
  })
  
  t.test('calls route handler correctly if promise', function(cb) {
    const assertError = new Error('test')
    let checkHandlerCtx = null
    let handler = function(ctx) {
      assert.strictEqual(ctx.params.id, 'test')
      checkHandlerCtx = ctx
      return Promise.resolve().then(function() {
        return Promise.reject(assertError)
      })
    }
    
    let flaska = new Flaska({}, faker)
    flaska.get('/:id', handler)
    flaska.compile()

    flaska.requestEnd = function(err, ctx) {
      if (err && err !== assertError) return cb(err)

      try {
        assert.ok(err)
        assert.ok(ctx)
        assert.strictEqual(err, assertError)
        assert.strictEqual(ctx, checkHandlerCtx)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test',
      method: 'GET',
    }), createRes())
  })

  t.test('should work with promise handler', function(cb) {
    const assertBody = { a: 1 }
    let handler = function(ctx) {
      return Promise.resolve().then(function() {
        assert.strictEqual(ctx.params.path, 'test/something/here')
        ctx.body = assertBody
      })
    }
    
    let flaska = new Flaska({}, faker)
    flaska.get('/::path', [], handler)
    flaska.compile()

    flaska.handleMiddleware = function() {
      throw new Error('should not be called')
    }

    flaska.requestEnd = function(err, ctx) {
      try {
        assert.notOk(err)
        assert.ok(ctx)
        assert.strictEqual(ctx.body, assertBody)
        cb()
      } catch (err) { cb(err) }
    }

    flaska.requestStart(createReq({
      url: '/test/something/here',
      method: 'GET',
    }), createRes())
  })
})