// ------------------------------------------------------------------------
//   Project active2
//   Active Thing (activething.com) git.activething.com/go
//
//   File name  writer.go
//   Created by DEV
//   Modified   23/04/2024
//
//   Copyright 2024 activething.com 
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

package base32

import (
	"bins/mems"
	"encoding/base32"
)

func Write(b *mems.ABuffer, value, null, empty []byte, isQuoted bool, quote byte) (er error) {
	if value == nil {
		_,_ = b.Write(null)
		return nil
	}
	if len(value) == 0 {
		_,_ = b.Write(empty)
		return nil
	}

	p := b.Len()
	if isQuoted {
		b.WriteByte(quote)
	}

	var t [64]byte
	ln := base32.StdEncoding.EncodedLen(len(value))
	if ln <= len(t) {
		dst := t[:ln]
		base32.StdEncoding.Encode(dst, value)
		_,er = b.Write(dst)
	} else if ln <= 1024 {
		dst := make([]byte, ln)
		base32.StdEncoding.Encode(dst, value)
		_,er = b.Write(dst)
	} else if er == nil {
		ec := base32.NewEncoder(base32.StdEncoding, b)
		_,_ = ec.Write(value)
		return ec.Close()
	}

	if er == nil {
		if isQuoted {
			b.WriteByte(quote)
		}
	} else {
		b.Truncate(p)
	}
	return er
}