package klog

import (
	"io"
	"os"
	"runtime"
	"testing"
)

func TestDev(t *testing.T) {
	LEVEL = Lerror | Ldebug | Lwarn | Linfo
	PROD = false
	// log.system = "dev"
	Error("TestDev")
	ErrorF(H{"Test": "set"}, "TestDev")
	Debug("TestDev")
	DebugF(H{"Test": "set"}, "TestDev")
	Warn("TestDev")
	WarnF(H{"Test": "set"}, "TestDev")
	Info("TestDev")
	InfoF(H{"Test": "set"}, "TestDev")
}

func TestProd(t *testing.T) {
	PROD = true
	// log.system = "prod"
	Error("TestProd")
	ErrorF(H{"Test": "set"}, "TestProd")
	Debug("TestProd")
	DebugF(H{"Test": "set"}, "TestProd")
	Warn("TestProd")
	WarnF(H{"Test": "set"}, "TestProd")
	Info("TestProd")
	InfoF(H{"Test": "set"}, "TestProd")
}

func TestSubDev(t *testing.T) {
	PROD = false
	l := Sub("TestSubDev")
	l.Error("TestSubDev")
	l.ErrorF(H{"Test": "set"}, "TestSubDev")
	l.Debug("TestSubDev")
	l.DebugF(H{"Test": "set"}, "TestSubDev")
	l.Warn("TestSubDev")
	l.WarnF(H{"Test": "set"}, "TestSubDev")
	l.Info("TestSubDev")
	l.InfoF(H{"Test": "set"}, "TestSubDev")
}

func TestSubProd(t *testing.T) {
	PROD = true
	l := Sub("TestSubProd")
	l.Error("TestSubProd")
	l.ErrorF(H{"Test": "set"}, "TestSubProd")
	l.Debug("TestSubProd")
	l.DebugF(H{"Test": "set"}, "TestSubProd")
	l.Warn("TestSubProd")
	l.WarnF(H{"Test": "set"}, "TestSubProd")
	l.Info("TestSubProd")
	l.InfoF(H{"Test": "set"}, "TestSubProd")
}

func TestColoring(t *testing.T) {
	l := Sub("color")
	l.Error(l.M("Hello", BgHiGreen, Italic, FgWhite), ", ", l.M("world", FgBlue, BgHiYellow))
	l.Error(l.M("Hello", FgHiGreen), ", ", l.M("world", Underline, FgMagenta))
	Error(M("Hello", FgHiGreen), ", ", M("world", Underline, FgMagenta))
}

func TestToFile(t *testing.T) {
	PROD = true
	l := Sub("TestToFile")

	f, err := os.OpenFile("dist/test.log", os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
	if err != nil {
		t.Error(err)
	}
	l.SetOutput(f)
	l.SetErrOutput(f)

	l.Error("TestToFile")
	l.Debug("TestToFile")
	l.Warn("TestToFile")
	l.Info("TestToFile")

	l.SetColor(true)
	l.Error("TestToFile colored")
	l.Debug("TestToFile colored")
	l.Warn("TestToFile colored")
	l.Info("TestToFile colored")
}

func TestApplyChild(t *testing.T) {
	PROD = true
	l := Sub("parent")
	l1 := l.Sub("child1")
	l2 := l.Sub("child2")
	l3 := l.Sub("child3")
	l1.Info("child1")
	l2.Info("child2")
	l3.Info("child3")
	l.SetOutputAll(io.Discard)

	l1.Info("child1-discard")
	l2.Info("child2-discard")
	l3.Info("child3-discard")
	SetOutputAll(os.Stdout)

	l1.Info("child1-stdout")
	l2.Info("child2-stdout")
	l3.Info("child3-stdout")
	SetColorAll(false)

	l1.Info("child1-nocolor")
	l2.Info("child2-nocolor")
	l3.Info("child3-nocolor")
}

func TestDefaultLogger(t *testing.T) {
	l := DefaultLogger()
	l.Error("TestDefaultLogger")
	l.Debug("TestDefaultLogger")
	l.Warn("TestDefaultLogger")
	l.Info("TestDefaultLogger")
}

func BenchmarkDefault(b *testing.B) {
	SetErrOutput(io.Discard)
	SetOutput(io.Discard)
	LEVEL = 15
	for i := 0; i < b.N; i++ {
		PROD = true
		Error("err in", "BenchmarkDefault: ", i)
		ErrorF(H{"test": "fields"}, "err in", "BenchmarkDefault: ", i)
		Debug("err in", "BenchmarkDefault: ", i)
		DebugF(H{"test": "fields"}, "err in", "BenchmarkDefault: ", i)
		Warn("err in", "BenchmarkDefault: ", i)
		WarnF(H{"test": "fields"}, "err in", "BenchmarkDefault: ", i)
	}
	for i := 0; i < b.N; i++ {
		PROD = false
		Error("err in", "BenchmarkDefault: ", i)
		ErrorF(H{"test": "fields"}, "err in", "BenchmarkDefault: ", i)
		Debug("err in", "BenchmarkDefault: ", i)
		DebugF(H{"test": "fields"}, "err in", "BenchmarkDefault: ", i)
		Warn("err in", "BenchmarkDefault: ", i)
		WarnF(H{"test": "fields"}, "err in", "BenchmarkDefault: ", i)
	}
}

func BenchmarkSub1(b *testing.B) {
	LEVEL = 15
	l := Sub("Sub1")
	l.SetErrOutput(io.Discard)
	l.SetOutput(io.Discard)
	for i := 0; i < b.N; i++ {
		PROD = true
		l.Error("err in", "BenchmarkDefault: ", i)
		l.ErrorF(H{"test": "fields"}, "err in", "BenchmarkSub1: ", i)
		l.Debug("err in", "BenchmarkDefault: ", i)
		l.DebugF(H{"test": "fields"}, "err in", "BenchmarkSub1: ", i)
		l.Warn("err in", "BenchmarkDefault: ", i)
		l.WarnF(H{"test": "fields"}, "err in", "BenchmarkSub1: ", i)
	}
	for i := 0; i < b.N; i++ {
		PROD = false
		l.Error("err in", "BenchmarkDefault: ", i)
		l.ErrorF(H{"test": "fields"}, "err in", "BenchmarkSub1: ", i)
		l.Debug("err in", "BenchmarkDefault: ", i)
		l.DebugF(H{"test": "fields"}, "err in", "BenchmarkSub1: ", i)
		l.Warn("err in", "BenchmarkDefault: ", i)
		l.WarnF(H{"test": "fields"}, "err in", "BenchmarkSub1: ", i)
	}
}

func TestIntercept(t *testing.T) {
	l := Sub("inter")
	l.Info("original")
	p := l.GetPrinter()
	l.SetPrinter(func(w io.Writer, d *Ldata, l *Logger) {
		d.Message += " intercepted"
		p(w, d, l)
	})
	l.Info("original")
}

func BenchmarkStackSTD(b *testing.B) {
	f := func() []byte {
		buf := make([]byte, 1024)
		for {
			n := runtime.Stack(buf, false)
			if n < len(buf) {
				return buf[:n]
			}
			buf = make([]byte, 2*len(buf))
		}
	}
	LEVEL = 15
	l := Sub("StackSTD")
	l.SetErrOutput(io.Discard)
	l.SetOutput(io.Discard)
	for i := 0; i < b.N; i++ {
		l.Info(f())
	}
}

func BenchmarkStackSTDStr(b *testing.B) {
	LEVEL = 15
	l := Sub("StackSTD")
	l.SetErrOutput(io.Discard)
	l.SetOutput(io.Discard)
	for i := 0; i < b.N; i++ {
		l.Info(Stack())
	}
}

func BenchmarkStackCust(b *testing.B) {
	LEVEL = 15
	l := Sub("StackCust")
	l.SetErrOutput(io.Discard)
	l.SetOutput(io.Discard)
	for i := 0; i < b.N; i++ {
		l.Info(StackSkip(3))
	}
}

func BenchmarkStackCustStr(b *testing.B) {
	LEVEL = 15
	l := Sub("StackCust")
	l.SetErrOutput(io.Discard)
	l.SetOutput(io.Discard)
	for i := 0; i < b.N; i++ {
		l.Info(string(StackSkip(3)))
	}
}