// Copyright 2014 loolgame Author. All Rights Reserved.
//
// 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 utils

import (
	"encoding/binary"
	"encoding/json"
	"math"
)

func BoolToBytes(v bool) []byte {
	var buf = make([]byte, 1)
	if v {
		buf[0] = 1
	} else {
		buf[0] = 0
	}
	return buf
}

func BytesToBool(buf []byte) bool {
	var data bool = buf[0] != 0
	return data
}

func Int32ToBytes(i int32) []byte {
	var buf = make([]byte, 4)
	binary.BigEndian.PutUint32(buf, uint32(i))
	return buf
}

func BytesToInt32(buf []byte) int32 {
	return int32(binary.BigEndian.Uint32(buf))
}

func Int64ToBytes(i int64) []byte {
	var buf = make([]byte, 8)
	binary.BigEndian.PutUint64(buf, uint64(i))
	return buf
}

func BytesToInt64(buf []byte) int64 {
	return int64(binary.BigEndian.Uint64(buf))
}

func Float32ToBytes(float float32) []byte {
	bits := math.Float32bits(float)
	bytes := make([]byte, 4)
	binary.LittleEndian.PutUint32(bytes, bits)

	return bytes
}

func BytesToFloat32(bytes []byte) float32 {
	bits := binary.LittleEndian.Uint32(bytes)

	return math.Float32frombits(bits)
}

func Float64ToBytes(float float64) []byte {
	bits := math.Float64bits(float)
	bytes := make([]byte, 8)
	binary.LittleEndian.PutUint64(bytes, bits)

	return bytes
}

func BytesToFloat64(bytes []byte) float64 {
	bits := binary.LittleEndian.Uint64(bytes)

	return math.Float64frombits(bits)
}

func MapToBytes(jmap map[string]interface{}) ([]byte, error) {
	bytes, err := json.Marshal(jmap)
	return bytes, err
}

func BytesToMap(bytes []byte) (map[string]interface{}, error) {
	v := make(map[string]interface{})
	err := json.Unmarshal(bytes, &v)

	return v, err
}

func MapToBytesString(jmap map[string]string) ([]byte, error) {
	bytes, err := json.Marshal(jmap)
	return bytes, err
}

func BytesToMapString(bytes []byte) (map[string]string, error) {
	v := make(map[string]string)
	err := json.Unmarshal(bytes, &v)

	return v, err
}