package log

import (
	"fmt"
	"time"
)

type envelope struct {
	log logger

	lvl level

	// err is an error attached to the envelope
	err error

	args map[string]string
}

func (e *envelope) Msg(f string, args ...any) {
	if e.log.Level() < e.lvl {
		return // No logging
	}
	// formatter and output things here
	E := &envelopeData{*e, time.Now()}
	msg := fmt.Sprintf(f, args...)
	loggers[e.log].format.Output(msg, E)
	e.lvl.Hook(msg)
}

func (e *envelope) Arg(name string, value any) *envelope {
	e.args[name] = fmt.Sprintf("%v", value)
	return e
}

func (e *envelope) Err(err error) *envelope {
	e.err = err
	return e
}

func (e *envelope) To(l logger) *envelope {
	e.log = l
	return e
}

type Fn func(fmt string, args ...any)

func (e *envelope) If(msg func(Fn)) {
	if e.log.Level() >= e.lvl {
		msg(e.Msg)
	}
}