package blog4go

import (
"fmt"
"os"
"time"
)

// ConsoleWriter is a console logger
type ConsoleWriter struct {
blog *BLog
// for stderr
errblog *BLog

redirected bool

closed bool

colored bool

// log hook
hook      Hook
hookLevel LevelType
hookAsync bool
}

// NewConsoleWriter initialize a console writer, singlton
func NewConsoleWriter(redirected bool) (err error) {
singltonLock.Lock()
defer singltonLock.Unlock()
if nil != blog {
return ErrAlreadyInit
}

consoleWriter, err := newConsoleWriter(redirected)
if nil != err {
return err
}

blog = consoleWriter
go consoleWriter.daemon()
return nil
}

// newConsoleWriter initialize a console writer, not singlton
// if redirected, stderr will be redirected to stdout
func newConsoleWriter(redirected bool) (consoleWriter *ConsoleWriter, err error) {
consoleWriter = new(ConsoleWriter)
consoleWriter.blog = NewBLog(os.Stdout)
consoleWriter.redirected = redirected
if !redirected {
consoleWriter.errblog = NewBLog(os.Stderr)
}

consoleWriter.closed = false

consoleWriter.colored = false

// log hook
consoleWriter.hook = nil
consoleWriter.hookLevel = DEBUG
consoleWriter.hookAsync = true

go consoleWriter.daemon()

blog = consoleWriter
return consoleWriter, nil
}

func (writer *ConsoleWriter) daemon() {
f := time.Tick(1 * time.Second)

DaemonLoop:
for {
select {
case <-f:
if writer.closed {
break DaemonLoop
}

writer.flush()
}
}
}

func (writer *ConsoleWriter) write(level LevelType, args ...interface{}) {
if writer.closed {
return
}
defer func() {
if nil != writer.hook && !(level < writer.hookLevel) {
if writer.hookAsync {
go func(level LevelType, args ...interface{}) {
writer.hook.Fire(level, args...)
}(level, args...)

} else {
writer.hook.Fire(level, args...)
}
}
}()

if !writer.redirected && level >= WARNING {
writer.errblog.write(level, args...)
return
}

writer.blog.write(level, args...)
}

func (writer *ConsoleWriter) writef(level LevelType, format string, args ...interface{}) {
if writer.closed {
return
}

defer func() {

if nil != writer.hook && !(level < writer.hookLevel) {
if writer.hookAsync {
go func(level LevelType, format string, args ...interface{}) {
writer.hook.Fire(level, fmt.Sprintf(format, args...))
}(level, format, args...)

} else {
writer.hook.Fire(level, fmt.Sprintf(format, args...))
}
}
}()

if !writer.redirected && level >= WARNING {
writer.errblog.writef(level, format, args...)
return
}

writer.blog.writef(level, format, args...)
}

// Level get level
func (writer *ConsoleWriter) Level() LevelType {
return writer.blog.Level()
}

// SetLevel set logger level
func (writer *ConsoleWriter) SetLevel(level LevelType) {
writer.blog.SetLevel(level)
}

// Colored get Colored
func (writer *ConsoleWriter) Colored() bool {
return writer.colored
}

// SetColored set logging color
func (writer *ConsoleWriter) SetColored(colored bool) {
if colored == writer.colored {
return
}

writer.colored = colored

initPrefix(colored)
}

// SetHook set hook for logging action
func (writer *ConsoleWriter) SetHook(hook Hook) {
writer.hook = hook
}

// SetHookAsync set hook async for base file writer
func (writer *ConsoleWriter) SetHookAsync(async bool) {
writer.hookAsync = async
}

// SetHookLevel set when hook will be called
func (writer *ConsoleWriter) SetHookLevel(level LevelType) {
writer.hookLevel = level
}

// Close close console writer
func (writer *ConsoleWriter) Close() {
if writer.closed {
return
}

writer.blog.flush()
writer.blog = nil
writer.closed = true
}

// TimeRotated do nothing
func (writer *ConsoleWriter) TimeRotated() bool {
return false
}

// SetTimeRotated do nothing
func (writer *ConsoleWriter) SetTimeRotated(timeRotated bool) {
return
}

// Retentions do nothing
func (writer *ConsoleWriter) Retentions() int64 {
return 0
}

// SetRetentions do nothing
func (writer *ConsoleWriter) SetRetentions(retentions int64) {
return
}

// RotateSize do nothing
func (writer *ConsoleWriter) RotateSize() int64 {
return 0
}

// SetRotateSize do nothing
func (writer *ConsoleWriter) SetRotateSize(rotateSize int64) {
return
}

// RotateLines do nothing
func (writer *ConsoleWriter) RotateLines() int {
return 0
}

// SetRotateLines do nothing
func (writer *ConsoleWriter) SetRotateLines(rotateLines int) {
return
}

// flush buffer to disk
func (writer *ConsoleWriter) flush() {
writer.blog.flush()
}

// Trace trace
func (writer *ConsoleWriter) Trace(args ...interface{}) {
if nil == writer.blog || TRACE < writer.blog.Level() {
return
}

writer.write(TRACE, args...)
}

// Tracef tracef
func (writer *ConsoleWriter) Tracef(format string, args ...interface{}) {
if nil == writer.blog || TRACE < writer.blog.Level() {
return
}

writer.writef(TRACE, format, args...)
}

// Debug debug
func (writer *ConsoleWriter) Debug(args ...interface{}) {
if nil == writer.blog || DEBUG < writer.blog.Level() {
return
}

writer.write(DEBUG, args...)
}

// Debugf debugf
func (writer *ConsoleWriter) Debugf(format string, args ...interface{}) {
if nil == writer.blog || DEBUG < writer.blog.Level() {
return
}

writer.writef(DEBUG, format, args...)
}

// Info info
func (writer *ConsoleWriter) Info(args ...interface{}) {
if nil == writer.blog || INFO < writer.blog.Level() {
return
}

writer.write(INFO, args...)
}

// Infof infof
func (writer *ConsoleWriter) Infof(format string, args ...interface{}) {
if nil == writer.blog || INFO < writer.blog.Level() {
return
}

writer.writef(INFO, format, args...)
}

// Warn warn
func (writer *ConsoleWriter) Warn(args ...interface{}) {
if nil == writer.blog || WARNING < writer.blog.Level() {
return
}

writer.write(WARNING, args...)
}

// Warnf warnf
func (writer *ConsoleWriter) Warnf(format string, args ...interface{}) {
if nil == writer.blog || WARNING < writer.blog.Level() {
return
}

writer.writef(WARNING, format, args...)
}

// Error error
func (writer *ConsoleWriter) Error(args ...interface{}) {
if nil == writer.blog || ERROR < writer.blog.Level() {
return
}

writer.write(ERROR, args...)
}

// Errorf errorf
func (writer *ConsoleWriter) Errorf(format string, args ...interface{}) {
if nil == writer.blog || ERROR < writer.blog.Level() {
return
}

writer.writef(ERROR, format, args...)
}

// Critical critical
func (writer *ConsoleWriter) Critical(args ...interface{}) {
if nil == writer.blog || CRITICAL < writer.blog.Level() {
return
}

writer.write(CRITICAL, args...)
}

// Criticalf criticalf
func (writer *ConsoleWriter) Criticalf(format string, args ...interface{}) {
if nil == writer.blog || CRITICAL < writer.blog.Level() {
return
}

writer.writef(CRITICAL, format, args...)
}

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