package main

import (
	"context"

	"go.opentelemetry.io/otel"
	"go.opentelemetry.io/otel/baggage"
	"go.opentelemetry.io/otel/trace"

	oteltag "github.com/remychantenay/otel-tag"
)

type User struct {
	ID        string `otel:"app.user.id"`
	Username  string `otel:"app.user.username"`
	IsPremium bool   `otel:"app.user.premium"`
	Website   string `otel:"app.user.website,omitempty"`
	Bio       string // Not tagged, will be ignored.
}

func main() {
	tracer := otel.Tracer("example")

	user := User{
		ID:        "123",
		Username:  "john_doe",
		IsPremium: true,
		Website:   "https://example.com",
		Bio:       "Software developer",
	}

	// Span attributes.
	_, span := tracer.Start(context.Background(), "someOperation",
		trace.WithAttributes(oteltag.SpanAttributes(user)...),
	)
	defer span.End()

	// Baggage Members.
	members := oteltag.BaggageMembers(user)
	bag, _ := baggage.New(members...)
	ctx := baggage.ContextWithBaggage(context.Background(), bag)
}