package slog

import (
	"runtime"
	"sort"
	"strings"
)

func getTraceback() *MethodTraceback {
	caller, _, _, _ := runtime.Caller(5)
	details := runtime.FuncForPC(caller)
	signature := details.Name()
	path, line := details.FileLine(caller)
	splitPath := strings.Split(path, "/")

	splitSignature := strings.Split(signature, ".")
	method := splitSignature[len(splitSignature)-1]

	tb := &MethodTraceback{
		Filename:  splitPath[len(splitPath)-1],
		FullPath:  path,
		Line:      line,
		Signature: signature,
		Method:    method,
	}

	return tb
}
func getFullTraceback(skip int) []*MethodTraceback {
	pc := make([]uintptr, 15)
	runtime.Callers(skip, pc)
	list := make([]*MethodTraceback, 0)
	frames := runtime.CallersFrames(pc)
	for {
		frame, more := frames.Next()
		if !more {
			break
		}
		details := runtime.FuncForPC(frame.PC)
		signature := details.Name()
		path, line := details.FileLine(frame.PC)
		splitPath := strings.Split(path, "/")

		splitSignature := strings.Split(signature, ".")
		method := splitSignature[len(splitSignature)-1]

		tb := &MethodTraceback{
			Filename:  splitPath[len(splitPath)-1],
			FullPath:  path,
			Line:      line,
			Signature: signature,
			Method:    method,
		}
		list = append(list, tb)
	}
	sort.Slice(list, func(i, j int) bool {
		return j < i
	})
	return list
}