package log

import (
	"fmt"
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"time"
)

var level = 0

const (
	// TRACE level
	TRACE = 0

	// DEBUG level
	DEBUG = 1

	// INFO level
	INFO = 2

	// WARNING level
	WARNING = 3

	// ERROR level
	ERROR = 4

	// FATAL level
	FATAL = 5
)

// Init func
func Init(l int) {
	level = l
}

// IsDebugEnable func
func IsDebugEnable() bool {
	return level <= DEBUG
}

// Trace log
func Trace(a ...interface{}) {
	if level <= TRACE {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "TRACE: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("TRACE: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
	}
}

// Tracef log
func Tracef(format string, a ...interface{}) {
	if level <= TRACE {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "TRACE: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("TRACE: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
	}
}

// Debug log
func Debug(a ...interface{}) {
	if level <= DEBUG {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "DEBUG: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("DEBUG: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
	}
}

// Debugf log
func Debugf(format string, a ...interface{}) {
	if level <= DEBUG {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "DEBUG: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("DEBUG: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
	}
}

// Info log
func Info(a ...interface{}) {
	if level <= INFO {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "INFO: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("INFO: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
	}
}

// Infof log
func Infof(format string, a ...interface{}) {
	if level <= INFO {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "INFO: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("INFO: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
	}
}

// Warning log
func Warning(a ...interface{}) {
	if level <= WARNING {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "WARN: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("WARN: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
	}
}

// Warningf log
func Warningf(format string, a ...interface{}) {
	if level <= WARNING {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "WARN: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Printf("WARN: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
	}
}

// Error log
func Error(a ...interface{}) {
	if level <= ERROR {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "ERROR: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Fprintf(os.Stderr, "ERROR: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprint(a...))
	}
}

// Errorf log
func Errorf(format string, a ...interface{}) {
	if level <= ERROR {
		for i := 1; i > 0 && i < 100; i++ {
			_, path, _, _ := runtime.Caller(i)
			if path != "" {
				if strings.HasSuffix(path, "/libexec/src/runtime/panic.go") {
					_, path, line, _ := runtime.Caller(i + 1)
					_, file := filepath.Split(path)
					fmt.Fprintf(os.Stderr, "ERROR: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
					return
				}
			} else {
				i = -999
			}
		}
		_, path, line, _ := runtime.Caller(1)
		_, file := filepath.Split(path)
		fmt.Fprintf(os.Stderr, "ERROR: %s %v:%v: %s\n", time.Now().Format("01:04:05.000"), file, line, fmt.Sprintf(format, a...))
	}
}