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gfriends.go
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gfriends.go
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package gfriends
import (
"encoding/json"
"fmt"
"net/url"
"path"
"time"
"github.com/iancoleman/orderedmap"
"github.com/metatube-community/metatube-sdk-go/common/fetch"
"github.com/metatube-community/metatube-sdk-go/common/reverse"
"github.com/metatube-community/metatube-sdk-go/common/singledo"
"github.com/metatube-community/metatube-sdk-go/model"
"github.com/metatube-community/metatube-sdk-go/provider"
)
var (
_ provider.ActorProvider = (*GFriends)(nil)
_ provider.ActorSearcher = (*GFriends)(nil)
)
const (
Name = "GFriends"
Priority = 1000 - 1
)
const gFriendsID = "gfriends-id"
const (
baseURL = "https://github.com/gfriends/gfriends"
contentURL = "https://raw.githubusercontent.com/gfriends/gfriends/master/Content/%s/%s"
jsonURL = "https://raw.githubusercontent.com/gfriends/gfriends/master/Filetree.json"
)
var (
_baseURL = mustParse(baseURL)
_fetcher = fetch.Default(nil)
)
type GFriends struct{}
func New() *GFriends { return &GFriends{} }
func (gf *GFriends) Name() string { return Name }
func (gf *GFriends) Priority() int { return Priority }
func (gf *GFriends) URL() *url.URL { return _baseURL }
func (gf *GFriends) NormalizeActorID(id string) string { return id /* AS IS */ }
func (gf *GFriends) GetActorInfoByID(id string) (*model.ActorInfo, error) {
images, err := defaultFileTree.query(id)
if len(images) == 0 {
if err != nil {
return nil, err
}
return nil, provider.ErrInfoNotFound
}
return &model.ActorInfo{
ID: id,
Name: id,
Provider: gf.Name(),
Homepage: gf.formatURL(id),
Aliases: []string{},
Images: images,
}, nil
}
func (gf *GFriends) formatURL(id string) string {
u, _ := url.Parse(baseURL)
q := u.Query()
q.Set(gFriendsID, id)
u.RawQuery = q.Encode()
return u.String()
}
func (gf *GFriends) ParseActorIDFromURL(rawURL string) (string, error) {
homepage, err := url.Parse(rawURL)
if err != nil {
return "", err
}
return homepage.Query().Get(gFriendsID), nil
}
func (gf *GFriends) GetActorInfoByURL(u string) (*model.ActorInfo, error) {
id, err := gf.ParseActorIDFromURL(u)
if err != nil {
return nil, err
}
return gf.GetActorInfoByID(id)
}
func (gf *GFriends) SearchActor(keyword string) (results []*model.ActorSearchResult, err error) {
var info *model.ActorInfo
if info, err = gf.GetActorInfoByID(keyword); err == nil && info.Valid() {
results = []*model.ActorSearchResult{info.ToSearchResult()}
}
return
}
var defaultFileTree = newFileTree(2 * time.Hour)
type fileTree struct {
single *singledo.Single
// `Content`
Content *orderedmap.OrderedMap `json:"Content"`
// `Information`
//Information struct {
// TotalNum int `json:"TotalNum"`
// TotalSize int `json:"TotalSize"`
// Timestamp float64 `json:"Timestamp"`
//} `json:"Information"`
}
func newFileTree(wait time.Duration) *fileTree {
return &fileTree{
single: singledo.NewSingle(wait),
Content: orderedmap.New(),
}
}
func (ft *fileTree) query(s string) (images []string, err error) {
// update
ft.single.Do(func() (any, error) {
err = ft.update()
return nil, nil
})
// query
for _, c := range ft.Content.Keys() {
if o, ok := ft.Content.Get(c); ok {
am := o.(orderedmap.OrderedMap)
for _, n := range am.Keys() {
if n[:len(n)-len(path.Ext(n))] == s /* exact match */ {
p, _ := am.Get(n)
if u, e := url.Parse(fmt.Sprintf(contentURL, c, p.(string))); e == nil {
images = append(images, u.String())
}
}
}
}
}
reverse.Slice(images) // descending
return
}
func (ft *fileTree) update() error {
resp, err := _fetcher.Fetch(jsonURL)
if err != nil {
return err
}
defer resp.Body.Close()
return json.NewDecoder(resp.Body).Decode(ft)
}
func mustParse(rawURL string) *url.URL {
u, err := url.Parse(rawURL)
if err != nil {
panic(err)
}
return u
}
func init() {
provider.RegisterActorFactory(Name, New)
}