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// Package log implements a basic level based logger
package log
import (
"fmt"
"io"
"log/slog"
"os"
"path"
"codeberg.org/eduVPN/eduvpn-common/internal/util"
)
// Init initializes the logger by setting a max level 'level' and a directory 'directory' where the log should be stored
// internally, it uses slog, so any package just imports slog
// This can be done as this function sets the logger as the default logger in slog
// It returns the log file and the error
// This log file should be closed at the end
func Init(lvl slog.Level, dir string) (*os.File, error) {
err := util.EnsureDirectory(dir)
if err != nil {
return nil, err
}
name := path.Join(dir, "log")
f, err := os.OpenFile(
name,
os.O_RDWR|os.O_CREATE|os.O_APPEND,
0o666,
)
if err != nil {
return nil, fmt.Errorf("failed creating log: %w", err)
}
multi := io.MultiWriter(os.Stdout, f)
handler := slog.NewTextHandler(multi, &slog.HandlerOptions{
Level: lvl,
})
logger := slog.New(handler)
slog.SetDefault(logger)
return f, nil
}
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