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package main
import (
"context"
"errors"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"github.com/urfave/cli/v2"
)
func getLocalStorage() string {
switch runtime.GOOS {
case "windows":
return os.Getenv("APPDATA")
case "linux":
home, _ := os.UserHomeDir()
return filepath.Join(home, ".local", "share")
case "darwin":
home, _ := os.UserHomeDir()
return filepath.Join(home, "Library", "Application Support")
default:
return ""
}
}
func getDb(cCtx *cli.Context) (context.Context, error) {
if cCtx.Path("dbfile") == "" {
localFolder := getLocalStorage()
if localFolder == "" {
return context.WithValue(cCtx.Context, "dbfile", ""), errors.New("failed to locate application data folder")
}
return context.WithValue(cCtx.Context, "dbfile", filepath.Join(localFolder, "reencoder")), nil
}
if _, err := os.Stat(cCtx.Path("dbfile")); err != nil {
return context.WithValue(cCtx.Context, "dbfile", ""), err
}
return context.WithValue(cCtx.Context, "dbfile", cCtx.Path("dbfile")), nil
}
func checkTools() error {
if _, err := exec.LookPath("flac"); err != nil {
return errors.New("missing flac executable")
}
if _, err := exec.LookPath("metaflac"); err != nil {
return errors.New("missing metaflac executable")
}
return nil
}
func initArgs(cCtx *cli.Context) (context.Context, error) {
if err := checkTools(); err != nil {
return nil, err
}
if _, err := os.Stat(cCtx.Path("path")); err != nil {
return nil, err
}
ctx, err := getDb(cCtx)
if err != nil {
return nil, err
}
ctx = context.WithValue(ctx, "path", cCtx.Path("path"))
encoder, err := exec.Command("flac", "-v").Output()
if err != nil {
return nil, err
}
ctx = context.WithValue(ctx, "encoder", strings.ReplaceAll(strings.Split(string(encoder), " ")[1], "\n", ""))
defargs := []string{"-8f", "-j4"}
if cCtx.Value("flac") == nil {
return context.WithValue(ctx, "flac", defargs), nil
}
return context.WithValue(ctx, "flac", cCtx.StringSlice("flac")), nil
}
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