// 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() {}
}
require('../common')
const assert = require('assert')
const stream = require('../../lib/ours/index')
let passed = false
class TestStream extends stream.Transform {
  _transform(chunk, encoding, done) {
    if (!passed) {
      // Char 'a' only exists in the last write
      passed = chunk.toString().includes('a')
    }
    done()
  }
}
const s1 = new stream.Transform({
  transform(chunk, encoding, cb) {
    process.nextTick(cb, null, chunk)
  }
})
const s2 = new stream.PassThrough()
const s3 = new TestStream()
s1.pipe(s3)
// Don't let s2 auto close which may close s3
s2.pipe(s3, {
  end: false
})

// We must write a buffer larger than highWaterMark
const big = Buffer.alloc(s1.writableHighWaterMark + 1, 'x')

// Since big is larger than highWaterMark, it will be buffered internally.
assert(!s1.write(big))
// 'tiny' is small enough to pass through internal buffer.
assert(s2.write('tiny'))

// Write some small data in next IO loop, which will never be written to s3
// Because 'drain' event is not emitted from s1 and s1 is still paused
setImmediate(s1.write.bind(s1), 'later')

// Assert after two IO loops when all operations have been done.
process.on('exit', function () {
  assert(passed, 'Large buffer is not handled properly by Writable Stream')
})

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