// ------------------------------------------------------------------------
//   Project active2
//   Active Thing (activething.com) git.activething.com/go
//
//   File name  active.go
//   Created by DEV
//   Modified   16/04/2024
//
//   Copyright 2024 activething.com 
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

package ftext

import (
	"ansi"
	"atypes/astrings"
	"errs/stack"
	"fmt"
	"reflect"
	"strings"
	"sync"
)

var (

	g = struct {
		buildDefault sync.Once
		formatter    *TextFormatter
	}{

	}
)


func DefaultFormatter () *TextFormatter {
	g.buildDefault.Do(func() {

		g.formatter = NewTextFormatter(

			WithNameTransformers(
				astrings.TransformFnc(func (s string) string {
					return astrings.ToKebab(s) }),
				astrings.TransformFnc(func (s string) string {
					return astrings.Pad(s,8,' ',true) }),
			),


			WithSectionsFormat(func(c *Sections){

		    	c.Main.Set(0,
					func (b *TextBuilder){
						b.AddTextAnsi("# ERROR #####################################################\n",ansi.Code(0).SetFgColor(ansi.ColorHRed).SetStyle(ansi.StyleBold)) },
					nil)

				c.Head.Set(ansi.Code(0).SetFgColor(ansi.ColorHRed),nil,nil)

				c.Fields.Set(ansi.Code(0).SetFgColor(ansi.ColorGreen),
					nil,
					nil)

				c.Causes.Set(ansi.Code(0).SetFgColor(ansi.ColorCyan),
					func(b *TextBuilder){
						b.AddTextAnsi("\n* Prev Causes ***********************************************\n",ansi.Code(0).SetStyle(ansi.StyleBold)) },
						nil)

				c.Cause.Set(ansi.Code(0).SetFgColor(ansi.ColorCyan),
					func(b *TextBuilder) {
						if b.level == 1 {
							b.setAnsi(ansi.Code(0).SetFgColor(ansi.ColorMagenta))
						} else if b.level == 3 {
							b.setAnsi(ansi.Code(0).SetFgColor(ansi.ColorGreen))
						}
						b.AddTextAnsi(fmt.Sprintf("-- %d --------------------------------------------------------\n",b.Level()),0) },
					nil)

				c.Trace.Set(ansi.Code(0).SetFgColor(ansi.ColorHYellow).SetBgColor(ansi.ColorBlack),
					func(b *TextBuilder){
						b.AddTextAnsi("\n# Stack Trace ###############################################\n",b.ansiC.SetStyle(ansi.StyleBold).SetFgColor(ansi.ColorHYellow)) },
					nil)
			}),
		)
	})
	return g.formatter
}



func defaultFrameBuilder (builder *TextBuilder, frame stack.Frame, num int) {
	if strings.Index(frame.Package,"runtime") != -1 {
		return
	}

	var c1, c2, c3, c4 ansi.Code
	if builder.Options().ShowAnsi(){
		c1 = c1.SetFgColor(ansi.ColorBlue)//.SetBgColor(ansi.ColorHBlack)
		c2 = c2.SetFgColor(ansi.ColorMagenta)
		c3 = c3.SetFgColor(ansi.ColorWhite)
		c4 = c3.SetFgColor(ansi.ColorHWhite)
	}

	builder.AddText(c4.Sprintf(" %d %s.%s \n",num,frame.Package, frame.FuncName))
	builder.AddText(c2.Sprintf("   %.90s:%d\n", frame.File, frame.LineNumber))

	f, e := frame.SourceLine()
	if e == nil {
		builder.AddTextAnsi(fmt.Sprintf("   %s\n", f),c3)
	} else {
		builder.AddTextAnsi(fmt.Sprintf("   error %s\n", e.Error()),c3)
	}
}


func defaultFallback (b *TextBuilder, err, cause error) {
	b.AddText(fmt.Sprintf("Formatter error: Cant format error type (%s)\nValue : %#v \nCause : %s\n",reflect.TypeOf(err).String(),err,cause.Error()))
}