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ss.go
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ss.go
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package ds
import (
"context"
"fmt"
"image"
"image/jpeg"
"io"
"io/ioutil"
"net/http"
"net/url"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/sselph/scraper/ss"
)
func ssXMLDate(d string) string {
switch len(d) {
case 10:
t, _ := time.Parse("2006-01-02", d)
return t.Format("20060102T000000")
case 4:
return fmt.Sprintf("%s0101T000000", d)
}
return ""
}
// SS is the source for ScreenScraper
type SS struct {
HM *HashMap
Hasher *Hasher
Dev ss.DevInfo
User ss.UserInfo
Lang []string
Region []string
Width int
Height int
Limit chan struct{}
}
type HTTPVideoSS struct {
URL string
E string
Limit chan struct{}
}
func (v HTTPVideoSS) Save(ctx context.Context, p string) error {
if v.Limit != nil {
v.Limit <- struct{}{}
defer func() {
<-v.Limit
}()
}
req, err := http.NewRequest("GET", v.URL, nil)
if err != nil {
return err
}
req = req.WithContext(ctx)
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
if resp.StatusCode == http.StatusNotFound {
return ErrImgNotFound
}
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("%v from $s", resp.StatusCode, v.URL)
}
defer resp.Body.Close()
out, err := os.Create(p)
if err != nil {
return err
}
defer out.Close()
_, err = io.Copy(out, resp.Body)
return err
}
func (v HTTPVideoSS) Ext() string {
return v.E
}
type HTTPImageSS struct {
URL string
Limit chan struct{}
}
func (i HTTPImageSS) fetch(ctx context.Context, width, height uint) (rc io.ReadCloser, err error) {
u := ssImgURL(i.URL, int(width), int(height))
req, err := http.NewRequest("GET", u, nil)
if err != nil {
return nil, err
}
req = req.WithContext(ctx)
resp, err := http.DefaultClient.Do(req)
if err != nil {
if uerr, ok := err.(*url.Error); ok {
uerr.URL = ss.SanitizeURL(uerr.URL)
return nil, uerr
}
return nil, err
}
defer func() {
if err != nil {
resp.Body.Close()
}
}()
if resp.StatusCode == http.StatusNotFound {
return nil, ErrImgNotFound
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("%v from %s", resp.StatusCode, ss.SanitizeURL(u))
}
if resp.Header.Get("Content-Type") != "image/png" {
b, _ := ioutil.ReadAll(resp.Body)
return nil, fmt.Errorf("%s from %s", string(b), ss.SanitizeURL(u))
}
return resp.Body, nil
}
func (i HTTPImageSS) Get(ctx context.Context, width, height uint) (image.Image, error) {
if i.Limit != nil {
i.Limit <- struct{}{}
defer func() {
<-i.Limit
}()
}
b, err := i.fetch(ctx, width, height)
if err != nil {
return nil, err
}
defer b.Close()
img, _, err := image.Decode(b)
if err != nil {
return nil, err
}
return img, nil
}
func (i HTTPImageSS) Save(ctx context.Context, p string, width, height uint) error {
if i.Limit != nil {
i.Limit <- struct{}{}
defer func() {
<-i.Limit
}()
}
b, err := i.fetch(ctx, width, height)
if err != nil {
return err
}
defer b.Close()
out, err := os.Create(p)
if err != nil {
return err
}
defer out.Close()
e := filepath.Ext(p)
switch e {
case ".jpg":
img, _, err := image.Decode(b)
if err != nil {
return nil
}
return jpeg.Encode(out, img, nil)
case ".png":
_, err := io.Copy(out, b)
return err
default:
return fmt.Errorf("Invalid image type.")
}
return nil
}
// getID gets the ID from the path.
func (s *SS) getID(p string) (string, error) {
return s.Hasher.Hash(p)
}
// GetName implements DS
func (s *SS) GetName(p string) string {
h, err := s.Hasher.Hash(p)
if err != nil {
return ""
}
name, ok := s.HM.Name(h)
if !ok {
return ""
}
return name
}
// GetGame implements DS
func (s *SS) GetGame(ctx context.Context, path string) (*Game, error) {
if s.Limit != nil {
s.Limit <- struct{}{}
defer func() {
<-s.Limit
}()
}
id, err := s.getID(path)
if err != nil {
return nil, err
}
// Empty File, SS still returns a result.
if id == "da39a3ee5e6b4b0d3255bfef95601890afd80709" {
return nil, ErrNotFound
}
req := ss.GameInfoReq{SHA1: id}
resp, err := ss.GameInfo(ctx, s.Dev, s.User, req)
if err != nil {
if err == ss.ErrNotFound {
return nil, ErrNotFound
}
return nil, err
}
game := resp.Response.Game
var regions []string
rom, ok := game.ROM(req)
if !ok {
return nil, ErrNotFound
}
for _, r := range rom.Regions() {
regions = append(regions, r)
}
regions = append(regions, s.Region...)
ret := NewGame()
var screen, box, cart, wheel Image
if game.Media.Screenshot != "" {
screen = HTTPImageSS{game.Media.Screenshot, s.Limit}
ret.Images[ImgScreen] = screen
ret.Thumbs[ImgScreen] = screen
}
if imgURL, ok := game.Media.Box2D(regions); ok {
ret.Images[ImgBoxart] = HTTPImageSS{imgURL, s.Limit}
ret.Thumbs[ImgBoxart] = HTTPImageSS{imgURL, s.Limit}
}
if imgURL, ok := game.Media.Box3D(regions); ok {
box = HTTPImageSS{imgURL, s.Limit}
ret.Images[ImgBoxart3D] = box
ret.Thumbs[ImgBoxart3D] = box
}
if imgURL, ok := game.Media.Wheel(regions); ok {
wheel = HTTPImageSS{imgURL, s.Limit}
ret.Images[ImgMarquee] = wheel
ret.Thumbs[ImgMarquee] = wheel
}
if imgURL, ok := game.Media.Support2D(regions); ok {
cart = HTTPImageSS{imgURL, s.Limit}
ret.Images[ImgCart] = cart
ret.Thumbs[ImgCart] = cart
}
if imgURL, ok := game.Media.SupportLabel(regions); ok {
label := HTTPImageSS{imgURL, s.Limit}
ret.Images[ImgCartLabel] = label
ret.Thumbs[ImgCartLabel] = label
}
if vidURL := game.Media.Video; vidURL != "" {
if u, err := url.Parse(vidURL); err == nil {
ext := u.Query().Get("mediaformat")
ret.Videos[VidStandard] = HTTPVideoSS{vidURL, "." + ext, s.Limit}
}
}
ret.Images[ImgMix3] = MixImage{StandardThree(screen, box, wheel)}
ret.Thumbs[ImgMix3] = MixImage{StandardThree(screen, box, wheel)}
ret.Images[ImgMix4] = MixImage{StandardFour(screen, box, cart, wheel)}
ret.Thumbs[ImgMix4] = MixImage{StandardFour(screen, box, cart, wheel)}
ret.ID = game.ID
ret.Source = "screenscraper.fr"
ret.GameTitle = game.Name
ret.Overview, _ = game.Desc(s.Lang)
game.Rating = strings.TrimSuffix(game.Rating, "/20")
if r, err := strconv.ParseFloat(game.Rating, 64); err == nil {
ret.Rating = r / 20.0
}
ret.Developer = game.Developer
ret.Publisher = game.Publisher
ret.Genre, _ = game.Genre(s.Lang)
if r, ok := game.Date(s.Region); ok {
ret.ReleaseDate = ssXMLDate(r)
}
if strings.ContainsRune(game.Players, '-') {
x := strings.Split(game.Players, "-")
game.Players = x[len(x)-1]
}
p, err := strconv.ParseInt(strings.TrimRight(game.Players, "+"), 10, 32)
if err == nil {
ret.Players = p
}
if ret.Overview == "" && ret.Images[ImgBoxart] == nil && ret.Images[ImgScreen] == nil {
return nil, ErrNotFound
}
return ret, nil
}
// ssImgURL parses the URL and adds the maxwidth.
func ssImgURL(img string, width int, height int) string {
if width <= 0 && height <= 0 {
return img
}
u, err := url.Parse(img)
if err != nil {
return img
}
v := u.Query()
if width > 0 {
v.Set("maxwidth", strconv.Itoa(width))
}
if height > 0 {
v.Set("maxheight", strconv.Itoa(height))
}
u.RawQuery = v.Encode()
return u.String()
}