Adding upstream version 0.28.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tools/auth/discord.go

@@ -0,0 +1,91 @@
+package auth
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/pocketbase/pocketbase/tools/types"
+	"golang.org/x/oauth2"
+)
+
+func init() {
+	Providers[NameDiscord] = wrapFactory(NewDiscordProvider)
+}
+
+var _ Provider = (*Discord)(nil)
+
+// NameDiscord is the unique name of the Discord provider.
+const NameDiscord string = "discord"
+
+// Discord allows authentication via Discord OAuth2.
+type Discord struct {
+	BaseProvider
+}
+
+// NewDiscordProvider creates a new Discord provider instance with some defaults.
+func NewDiscordProvider() *Discord {
+	// https://discord.com/developers/docs/topics/oauth2
+	// https://discord.com/developers/docs/resources/user#get-current-user
+	return &Discord{BaseProvider{
+		ctx:         context.Background(),
+		displayName: "Discord",
+		pkce:        true,
+		scopes:      []string{"identify", "email"},
+		authURL:     "https://discord.com/api/oauth2/authorize",
+		tokenURL:    "https://discord.com/api/oauth2/token",
+		userInfoURL: "https://discord.com/api/users/@me",
+	}}
+}
+
+// FetchAuthUser returns an AuthUser instance from Discord's user api.
+//
+// API reference:  https://discord.com/developers/docs/resources/user#user-object
+func (p *Discord) FetchAuthUser(token *oauth2.Token) (*AuthUser, error) {
+	data, err := p.FetchRawUserInfo(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 `json:"id"`
+		Username      string `json:"username"`
+		Discriminator string `json:"discriminator"`
+		Avatar        string `json:"avatar"`
+		Email         string `json:"email"`
+		Verified      bool   `json:"verified"`
+	}{}
+	if err := json.Unmarshal(data, &extracted); err != nil {
+		return nil, err
+	}
+
+	// Build a full avatar URL using the avatar hash provided in the API response
+	// https://discord.com/developers/docs/reference#image-formatting
+	avatarURL := fmt.Sprintf("https://cdn.discordapp.com/avatars/%s/%s.png", extracted.Id, extracted.Avatar)
+
+	// Concatenate the user's username and discriminator into a single username string
+	username := fmt.Sprintf("%s#%s", extracted.Username, extracted.Discriminator)
+
+	user := &AuthUser{
+		Id:           extracted.Id,
+		Name:         username,
+		Username:     extracted.Username,
+		AvatarURL:    avatarURL,
+		RawUser:      rawUser,
+		AccessToken:  token.AccessToken,
+		RefreshToken: token.RefreshToken,
+	}
+
+	user.Expiry, _ = types.ParseDateTime(token.Expiry)
+
+	if extracted.Verified {
+		user.Email = extracted.Email
+	}
+
+	return user, nil
+}