// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict'

const tap = require('tap')
const silentConsole = {
  log() {},
  error() {}
}
const common = require('../common')
const assert = require('assert')
const { Readable: R } = require('../../lib/ours/index')
class TestReader extends R {
  constructor(n, opts) {
    super(opts)
    this.pos = 0
    this.len = n || 100
  }
  _read(n) {
    setTimeout(() => {
      if (this.pos >= this.len) {
        // Double push(null) to test eos handling
        this.push(null)
        return this.push(null)
      }
      n = Math.min(n, this.len - this.pos)
      if (n <= 0) {
        // Double push(null) to test eos handling
        this.push(null)
        return this.push(null)
      }
      this.pos += n
      const ret = Buffer.alloc(n, 'a')
      return this.push(ret)
    }, 1)
  }
}
{
  // Verify utf8 encoding
  const tr = new TestReader(100)
  tr.setEncoding('utf8')
  const out = []
  const expect = [
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa'
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(10))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify hex encoding
  const tr = new TestReader(100)
  tr.setEncoding('hex')
  const out = []
  const expect = [
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161'
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(10))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify hex encoding with read(13)
  const tr = new TestReader(100)
  tr.setEncoding('hex')
  const out = []
  const expect = [
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '16161'
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(13))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify base64 encoding
  const tr = new TestReader(100)
  tr.setEncoding('base64')
  const out = []
  const expect = [
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYQ=='
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(10))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify utf8 encoding
  const tr = new TestReader(100, {
    encoding: 'utf8'
  })
  const out = []
  const expect = [
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa',
    'aaaaaaaaaa'
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(10))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify hex encoding
  const tr = new TestReader(100, {
    encoding: 'hex'
  })
  const out = []
  const expect = [
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161',
    '6161616161'
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(10))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify hex encoding with read(13)
  const tr = new TestReader(100, {
    encoding: 'hex'
  })
  const out = []
  const expect = [
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '1616161616161',
    '6161616161616',
    '16161'
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(13))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify base64 encoding
  const tr = new TestReader(100, {
    encoding: 'base64'
  })
  const out = []
  const expect = [
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYWFhYWFh',
    'YWFhYWFhYW',
    'FhYQ=='
  ]
  tr.on('readable', function flow() {
    let chunk
    while (null !== (chunk = tr.read(10))) out.push(chunk)
  })
  tr.on(
    'end',
    common.mustCall(function () {
      assert.deepStrictEqual(out, expect)
    })
  )
}
{
  // Verify chaining behavior
  const tr = new TestReader(100)
  assert.deepStrictEqual(tr.setEncoding('utf8'), tr)
}

/* replacement start */
process.on('beforeExit', (code) => {
  if (code === 0) {
    tap.pass('test succeeded')
  } else {
    tap.fail(`test failed - exited code ${code}`)
  }
})
/* replacement end */
