// Copyright 2023 Martin Riedl
//
// 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 log

import "sync"

type Output struct {
	Level         Level
	Formatter     Formatter
	formatterLock sync.Mutex
	Printer       Printer
}

func NewOutput(level Level, formatter Formatter, printer Printer) *Output {
	return &Output{
		Level:     level,
		Formatter: formatter,
		Printer:   printer,
	}
}

func NewOutputDefault() *Output {
	return NewOutput(LevelInfo, NewFormatterKeyValue(), NewPrinterStdout())
}

func (output *Output) Send(entry *Entry) {
	// check, if message should be printed
	if entry.Level > output.Level {
		return
	}

	// execute formatter
	data := output.format(entry)

	// execute printer
	output.Printer.Write(data)
}

func (output *Output) format(entry *Entry) []byte {
	output.formatterLock.Lock()
	defer output.formatterLock.Unlock()

	// run formatter
	output.Formatter.Begin(entry)

	// add entry data
	output.Formatter.Process(entry)

	// finalize formatter
	data := output.Formatter.End(entry)

	// return generated data
	return data
}