package starlog

import (
	"fmt"
	"os"
	"path/filepath"
	"runtime"
	"strconv"
	"sync"
	"time"

	"github.com/fatih/color"
	"github.com/mattn/go-colorable"
)

// Base attributes
const (
	BLUE    = color.FgBlue
	BLACK   = color.FgBlack
	CYAN    = color.FgCyan
	GREEN   = color.FgGreen
	MAGENTA = color.FgMagenta
	RED     = color.FgRed
	WHITE   = color.FgWhite
	YELLOW  = color.FgYellow
	GREY    = color.FgHiRed
	BOLD    = color.Bold
)

// Log Level
const (
	LvDebug = iota
	LvInfo
	LvNotice
	LvWarning
	LvError
	LvCritical
	LvPanic
	LvFatal
)

// Log Init Data
var (
	levels = map[int]string{
		LvDebug:    "DEBUG",
		LvInfo:     "INFO",
		LvNotice:   "NOTICE",
		LvWarning:  "WARNING",
		LvError:    "ERROR",
		LvCritical: "CRITICAL",
		LvPanic:    "PANIC",
		LvFatal:    "FATAL",
	}
	Colors = map[int][]color.Attribute{
		LvDebug:    []color.Attribute{WHITE},
		LvInfo:     []color.Attribute{GREEN},
		LvNotice:   []color.Attribute{BLUE},
		LvWarning:  []color.Attribute{YELLOW},
		LvError:    []color.Attribute{MAGENTA},
		LvCritical: []color.Attribute{RED, BOLD},
		LvPanic:    []color.Attribute{RED, BOLD},
		LvFatal:    []color.Attribute{RED},
	}
	LogLevel                                        int      = 0
	ShowLine, ShowLevel, DoWrite, DoShow, switching bool     = true, true, true, true, false
	loghandle                                       *os.File = nil
	HandleFunc                                      func([]color.Attribute, string)
	lock                                            sync.WaitGroup
	waiting                                         = make(chan int, 1)
)

// Output 使用此进行windows支持
var Output = colorable.NewColorableStdout()

func write(logs string) {
	var i int
	lock.Add(1)
	defer lock.Done()
	for switching {
		time.Sleep(time.Millisecond * 100)
		i++
		if i > 20 {
			return
		}
	}
	if loghandle == nil {
		return
	}
	loghandle.WriteString(logs)
}

func output(level int, showline, showlv, dowrite, doshow bool, strlog string) {
	var logs string
	waiting <- 1
	defer func() {
		<-waiting
	}()
	if level < LogLevel {
		return
	}
	_, fname, line, _ := runtime.Caller(2)
	fname = filepath.Base(fname)
	date := time.Now().Format("2006-01-02 15:04:05 Mon")
	if showline && showlv {
		logs = fmt.Sprintf("%s %s %s %s", date, fname+":"+strconv.Itoa(line), `[`+levels[level]+`]`, strlog)
	} else if showline && !showlv {
		logs = fmt.Sprintf("%s %s %s", date, fname+":"+strconv.Itoa(line), strlog)
	} else if !showline && showlv {
		logs = fmt.Sprintf("%s %s %s", date, `[`+levels[level]+`]`, strlog)
	} else {
		logs = fmt.Sprintf("%s %s", date, strlog)
	}
	if doshow {
		logcolor := color.New(Colors[level]...)
		logstr := logcolor.Sprint(logs)
		fmt.Fprint(Output, logstr)
	}
	if HandleFunc != nil {
		go HandleFunc(Colors[level], logs)
	}
	if dowrite {
		write(logs)
	}
}

// StdPrint 进行stdout标准输出
func StdPrint(c1, c2 color.Attribute, str ...interface{}) {
	waiting <- 1
	defer func() {
		<-waiting
	}()
	colorstr := color.New(c1, c2)
	colorstr.Fprint(Output, str...)
}

func StdPrintf(c1, c2 color.Attribute, format string, str ...interface{}) {
	waiting <- 1
	defer func() {
		<-waiting
	}()
	colorstr := color.New(c1, c2)
	colorstr.Fprintf(Output, format, str...)
}

func StdPrintln(c1, c2 color.Attribute, str ...interface{}) {
	waiting <- 1
	defer func() {
		<-waiting
	}()
	colorstr := color.New(c1, c2)
	colorstr.Fprintln(Output, str...)
}

func Print(c1, c2 color.Attribute, str ...interface{}) {
	StdPrint(c1, c2, str...)
	write(fmt.Sprint(str...))
}

func Printf(c1, c2 color.Attribute, format string, str ...interface{}) {
	StdPrintf(c1, c2, format, str...)
	write(fmt.Sprintf(format, str...))
}

func Println(c1, c2 color.Attribute, str ...interface{}) {
	StdPrintln(c1, c2, str...)
	write(fmt.Sprintln(str...))
}

func Debug(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvDebug, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Debugf(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvDebug, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Debugln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvDebug, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Info(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvInfo, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Infof(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvInfo, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Infoln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvInfo, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Notice(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvNotice, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Noticef(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvNotice, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Noticeln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvNotice, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Warning(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvWarning, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Warningf(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvWarning, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Warningln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvWarning, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Error(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvError, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Errorf(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvError, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Errorln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvError, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Critical(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvCritical, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Criticalf(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvCritical, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Criticalln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvCritical, ShowLine, ShowLevel, DoWrite, DoShow, strs)
}

func Fatal(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvFatal, ShowLine, ShowLevel, DoWrite, DoShow, strs)
	CloseLog()
	os.Exit(9)
}

func Fatalf(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvFatal, ShowLine, ShowLevel, DoWrite, DoShow, strs)
	CloseLog()
	os.Exit(9)
}

func Fatalln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvFatal, ShowLine, ShowLevel, DoWrite, DoShow, strs)
	CloseLog()
	os.Exit(9)
}

func Panic(str ...interface{}) {
	strs := fmt.Sprint(str...)
	output(LvPanic, ShowLine, ShowLevel, DoWrite, DoShow, strs)
	panic(str)
}

func Panicf(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	output(LvPanic, ShowLine, ShowLevel, DoWrite, DoShow, strs)
	panic(strs)
}

func Panicln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	output(LvPanic, ShowLine, ShowLevel, DoWrite, DoShow, strs)
	panic(str)
}

func SetLogFile(path string) error {
	var err error
	loghandle, err = os.Create(path)
	switching = false
	return err
}

func SwitchFile(path string) error {
	switching = true
	if loghandle != nil {
		loghandle.Close()
	}
	return SetLogFile(path)
}

func CloseLog() {
	lock.Wait()
	if loghandle != nil {
		loghandle.Close()
	}
}