forked from pocketbase/pocketbase
/
facebook.go
74 lines (62 loc) · 1.77 KB
/
facebook.go
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package auth
import (
"context"
"encoding/json"
"github.com/jfmow/pocketbase-custom/tools/types"
"golang.org/x/oauth2"
"golang.org/x/oauth2/facebook"
)
var _ Provider = (*Facebook)(nil)
// NameFacebook is the unique name of the Facebook provider.
const NameFacebook string = "facebook"
// Facebook allows authentication via Facebook OAuth2.
type Facebook struct {
*baseProvider
}
// NewFacebookProvider creates new Facebook provider instance with some defaults.
func NewFacebookProvider() *Facebook {
return &Facebook{&baseProvider{
ctx: context.Background(),
displayName: "Facebook",
pkce: true,
scopes: []string{"email"},
authUrl: facebook.Endpoint.AuthURL,
tokenUrl: facebook.Endpoint.TokenURL,
userApiUrl: "https://graph.facebook.com/me?fields=name,email,picture.type(large)",
}}
}
// FetchAuthUser returns an AuthUser instance based on the Facebook's user api.
//
// API reference: https://developers.facebook.com/docs/graph-api/reference/user/
func (p *Facebook) FetchAuthUser(token *oauth2.Token) (*AuthUser, error) {
data, err := p.FetchRawUserData(token)
if err != nil {
return nil, err
}
rawUser := map[string]any{}
if err := json.Unmarshal(data, &rawUser); err != nil {
return nil, err
}
extracted := struct {
Id string
Name string
Email string
Picture struct {
Data struct{ Url string }
}
}{}
if err := json.Unmarshal(data, &extracted); err != nil {
return nil, err
}
user := &AuthUser{
Id: extracted.Id,
Name: extracted.Name,
Email: extracted.Email,
AvatarUrl: extracted.Picture.Data.Url,
RawUser: rawUser,
AccessToken: token.AccessToken,
RefreshToken: token.RefreshToken,
}
user.Expiry, _ = types.ParseDateTime(token.Expiry)
return user, nil
}