package console_exporter

import (
	"fmt"
	"slices"
	"time"

	"git.ma-al.com/maal-libraries/observer/pkg/console_fmt"
	"git.ma-al.com/maal-libraries/observer/pkg/level"
	"go.opentelemetry.io/otel/attribute"
	"go.opentelemetry.io/otel/sdk/trace"
)

func NewSimpleSinglelineFormatter() TraceFormatter {
	return &SimpleSinglelineFormatter{}
}

// A simple formatter that will print only events using a single line per entry
type SimpleSinglelineFormatter struct{}

func (f *SimpleSinglelineFormatter) FormatSpanStart(span trace.ReadOnlySpan, selectedAttrs []attribute.KeyValue, lvl level.SeverityLevel) (string, error) {
	attrs := ""
	slices.SortFunc(selectedAttrs, func(a, b attribute.KeyValue) int {
		if a.Key > b.Key {
			return 1
		} else {
			return -1
		}
	})

	if len(selectedAttrs) > 0 {
		attrs += " |"
		for _, kv := range selectedAttrs {
			if len(kv.Key) > 0 {
				attrs += fmt.Sprintf(" %s=%s", string(kv.Key), AttrValueToString(kv.Value))
			}
		}
	}

	formattedSpanString := fmt.Sprintf(
		"%s%s\n",
		console_fmt.Bold(console_fmt.SeverityLevelToColor(lvl)+fmt.Sprintf("%s %s [SpanStart] - ", time.Now().Format("2006-01-02 15:04:05"), lvl.String())+span.Name()),
		attrs,
	)

	return formattedSpanString, nil
}
func (f *SimpleSinglelineFormatter) FormatSpanEnd(span trace.ReadOnlySpan, selectedAttrs []attribute.KeyValue, lvl level.SeverityLevel) (string, error) {
	attrs := ""
	slices.SortFunc(selectedAttrs, func(a, b attribute.KeyValue) int {
		if a.Key > b.Key {
			return 1
		} else {
			return -1
		}
	})

	if len(selectedAttrs) > 0 {
		attrs += " |"
		for _, kv := range selectedAttrs {
			if len(kv.Key) > 0 {
				attrs += fmt.Sprintf(" %s=%s", string(kv.Key), AttrValueToString(kv.Value))
			}
		}
	}

	formattedSpanString := fmt.Sprintf(
		"%s%s\n",
		console_fmt.Bold(console_fmt.SeverityLevelToColor(lvl)+fmt.Sprintf("%s %s [SpanEnd] - ", time.Now().Format("2006-01-02 15:04:05"), lvl.String())+span.Name()),
		attrs,
	)

	return formattedSpanString, nil

}
func (f *SimpleSinglelineFormatter) FormatEvent(event trace.Event, span trace.ReadOnlySpan, selectedAttrs []attribute.KeyValue, lvl level.SeverityLevel) (string, error) {
	attrs := ""
	slices.SortFunc(selectedAttrs, func(a, b attribute.KeyValue) int {
		if a.Key > b.Key {
			return 1
		} else {
			return -1
		}
	})

	if len(selectedAttrs) > 0 {
		attrs += " |"
		for _, kv := range selectedAttrs {
			if len(kv.Key) > 0 {
				attrs += fmt.Sprintf(" %s=%s", string(kv.Key), AttrValueToString(kv.Value))
			}
		}
	}

	formattedSpanString := fmt.Sprintf(
		"%s%s\n",
		console_fmt.Bold(console_fmt.SeverityLevelToColor(lvl)+fmt.Sprintf("%s %s [Event] - ", time.Now().Format("2006-01-02 15:04:05"), lvl.String())+event.Name),
		attrs,
	)

	return formattedSpanString, nil
}