strip-beats/media/fingerprint.go
2023-11-11 17:10:37 -06:00

87 lines
1.8 KiB
Go

package media
import (
"encoding/json"
"errors"
"fmt"
"io"
u "net/url"
"os/exec"
"strings"
"codeberg.org/danjones000/strip-beats/config"
"codeberg.org/danjones000/strip-beats/media/brainz"
h "codeberg.org/danjones000/strip-beats/utils/http"
"github.com/google/uuid"
)
type FPrint struct {
Duration float64
Fingerprint string
}
func Fingerprint(path string) (FPrint, error) {
pr := FPrint{}
_, err := exec.LookPath("fpcalc")
if err != nil {
return pr, errors.Join(errors.New("Unable to find fpcalc in PATH"), err)
}
cmd := exec.Command("fpcalc", "-json", path)
out, err := cmd.Output()
if err != nil {
return pr, errors.Join(errors.New(fmt.Sprintf("Failed to run %s", strings.Join(cmd.Args, " "))), err)
}
err = json.Unmarshal(out, &pr)
if err != nil {
return pr, errors.Join(errors.New("Couldn't parse output from fpcalc"), err)
}
return pr, nil
}
type IdResults struct {
Status string
Results []IdResult
Error IdError
}
type IdResult struct {
Id uuid.UUID
Score float64
Recordings []brainz.Recording
}
type IdError struct {
Code int
Message string
}
func LookupFingerprint(print FPrint) (IdResults, error) {
res := IdResults{}
key := config.GetConfig().AcousticIdKey
if key == "" {
return res, errors.New("Missing acoustic_id_key from config")
}
url := "https://api.acoustid.org/v2/lookup"
form := u.Values{
"format": {"json"},
"client": {key},
"duration": {fmt.Sprintf("%.0f", print.Duration)},
"fingerprint": {print.Fingerprint},
"meta": {"recordingids"}}
resp, err := h.PostForm(url, form)
if err != nil {
return res, err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return res, err
}
json.Unmarshal(body, &res)
if res.Status == "error" {
err = errors.New(res.Error.Message)
}
return res, err
}