'use strict'

const t = require('tap')
const test = t.test
const semver = require('semver')
const handleRequest = require('../../lib/handleRequest')
const internals = require('../../lib/handleRequest')[Symbol.for('internals')]
const Request = require('../../lib/request')
const Reply = require('../../lib/reply')
const buildSchema = require('../../lib/validation').build
const { Schemas } = require('../../lib/schemas')
const sget = require('simple-get').concat

const Ajv = require('ajv')
const ajv = new Ajv({ coerceTypes: true })

function schemaCompiler (schema) {
  const validateFuncion = ajv.compile(schema)
  var fn = function (body) {
    const isOk = validateFuncion(body)
    if (isOk) return
    return false
  }
  fn.errors = []
  return fn
}

test('Request object', t => {
  t.plan(8)
  const req = new Request('params', 'req', 'query', 'headers', 'log')
  t.type(req, Request)
  t.equal(req.params, 'params')
  t.deepEqual(req.raw, 'req')
  t.deepEqual(req.req, req.raw)
  t.equal(req.query, 'query')
  t.equal(req.headers, 'headers')
  t.equal(req.log, 'log')
  t.strictDeepEqual(req.body, null)
})

test('handleRequest function - sent reply', t => {
  t.plan(1)
  const request = {}
  const reply = { sent: true }
  const res = handleRequest(null, request, reply)
  t.equal(res, undefined)
})

test('handleRequest function - invoke with error', t => {
  t.plan(1)
  const request = {}
  const reply = {}
  reply.send = (err) => t.is(err.message, 'Kaboom')
  handleRequest(new Error('Kaboom'), request, reply)
})

test('handler function - invalid schema', t => {
  t.plan(2)
  const res = {}
  res.end = () => {
    t.equal(res.statusCode, 400)
    t.pass()
  }
  res.writeHead = () => {}
  res.log = { error: () => {}, info: () => {} }
  const context = {
    schema: {
      body: {
        type: 'object',
        properties: {
          hello: { type: 'number' }
        }
      }
    },
    handler: () => {},
    Reply: Reply,
    Request: Request,
    preValidation: [],
    preHandler: [],
    onSend: [],
    onError: [],
    attachValidation: false
  }
  const schemas = new Schemas()
  buildSchema(context, schemaCompiler, schemas)
  const request = {
    body: { hello: 'world' }
  }
  internals.handler(request, new Reply(res, context, request))
})

test('handler function - reply', t => {
  t.plan(3)
  const res = {}
  res.end = () => {
    t.equal(res.statusCode, 204)
    t.pass()
  }
  res.writeHead = () => {}
  const context = {
    handler: (req, reply) => {
      t.is(typeof reply, 'object')
      reply.code(204)
      reply.send(undefined)
    },
    Reply: Reply,
    Request: Request,
    preValidation: [],
    preHandler: [],
    onSend: [],
    onError: []
  }
  buildSchema(context, schemaCompiler)
  internals.handler({}, new Reply(res, context, {}))
})

test('handler function - preValidationCallback with finished response', t => {
  t.plan(0)
  const res = {}
  // Be sure to only check `writableEnded` where is available
  if (semver.gte(process.versions.node, '12.9.0')) {
    res.writableEnded = true
  } else {
    res.writable = false
    res.finished = true
  }
  res.end = () => {
    t.fail()
  }
  res.writeHead = () => {}
  const context = {
    handler: (req, reply) => {
      t.fail()
      reply.send(undefined)
    },
    Reply: Reply,
    Request: Request,
    preValidation: null,
    preHandler: [],
    onSend: [],
    onError: []
  }
  buildSchema(context, schemaCompiler)
  internals.handler({}, new Reply(res, context, {}))
})

test('request should be defined in onSend Hook on post request with content type application/json', t => {
  t.plan(8)
  const fastify = require('../..')()

  fastify.addHook('onSend', (request, reply, payload, done) => {
    t.ok(request)
    t.ok(request.raw)
    t.ok(request.id)
    t.ok(request.params)
    t.ok(request.query)
    done()
  })
  fastify.post('/', (request, reply) => {
    reply.send(200)
  })
  fastify.listen(0, err => {
    fastify.server.unref()
    t.error(err)
    sget({
      method: 'POST',
      url: 'http://localhost:' + fastify.server.address().port,
      headers: {
        'content-type': 'application/json'
      }
    }, (err, response, body) => {
      t.error(err)
      // a 400 error is expected because of no body
      t.strictEqual(response.statusCode, 400)
    })
  })
})

test('request should be defined in onSend Hook on post request with content type application/x-www-form-urlencoded', t => {
  t.plan(7)
  const fastify = require('../..')()

  fastify.addHook('onSend', (request, reply, payload, done) => {
    t.ok(request)
    t.ok(request.raw)
    t.ok(request.params)
    t.ok(request.query)
    done()
  })
  fastify.post('/', (request, reply) => {
    reply.send(200)
  })
  fastify.listen(0, err => {
    fastify.server.unref()
    t.error(err)
    sget({
      method: 'POST',
      url: 'http://localhost:' + fastify.server.address().port,
      headers: {
        'content-type': 'application/x-www-form-urlencoded'
      }
    }, (err, response, body) => {
      t.error(err)
      // a 415 error is expected because of missing content type parser
      t.strictEqual(response.statusCode, 415)
    })
  })
})

test('request should be defined in onSend Hook on options request with content type application/x-www-form-urlencoded', t => {
  t.plan(7)
  const fastify = require('../..')()

  fastify.addHook('onSend', (request, reply, payload, done) => {
    t.ok(request)
    t.ok(request.raw)
    t.ok(request.params)
    t.ok(request.query)
    done()
  })
  fastify.options('/', (request, reply) => {
    reply.send(200)
  })
  fastify.listen(0, err => {
    fastify.server.unref()
    t.error(err)
    sget({
      method: 'OPTIONS',
      url: 'http://localhost:' + fastify.server.address().port,
      headers: {
        'content-type': 'application/x-www-form-urlencoded'
      }
    }, (err, response, body) => {
      t.error(err)
      // Body parsing skipped, so no body sent
      t.strictEqual(response.statusCode, 200)
    })
  })
})

test('request should respond with an error if an unserialized payload is sent inside an an async handler', t => {
  t.plan(3)

  const fastify = require('../..')()

  fastify.get('/', (request, reply) => {
    reply.type('text/html')
    return Promise.resolve(request.headers)
  })

  fastify.inject({
    method: 'GET',
    url: '/'
  }, (err, res) => {
    t.error(err)
    t.strictEqual(res.statusCode, 500)
    t.strictDeepEqual(JSON.parse(res.payload), {
      error: 'Internal Server Error',
      code: 'FST_ERR_REP_INVALID_PAYLOAD_TYPE',
      message: 'FST_ERR_REP_INVALID_PAYLOAD_TYPE: Attempted to send payload of invalid type \'object\'. Expected a string or Buffer.',
      statusCode: 500
    })
  })
})