106 lines
2.9 KiB
Go
106 lines
2.9 KiB
Go
package auth
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import (
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"context"
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"encoding/json"
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"fmt"
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"github.com/pocketbase/pocketbase/tools/types"
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"golang.org/x/oauth2"
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)
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func init() {
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Providers[NameDiscord] = wrapFactory(NewDiscordProvider)
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}
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var _ Provider = (*Discord)(nil)
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// NameDiscord is the unique name of the Discord provider.
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const NameDiscord string = "discord"
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// Discord allows authentication via Discord OAuth2.
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type Discord struct {
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BaseProvider
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}
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// NewDiscordProvider creates a new Discord provider instance with some defaults.
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func NewDiscordProvider() *Discord {
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// https://discord.com/developers/docs/topics/oauth2
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// https://discord.com/developers/docs/resources/user#get-current-user
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return &Discord{BaseProvider{
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ctx: context.Background(),
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displayName: "Discord",
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pkce: true,
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scopes: []string{"identify", "email"},
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authURL: "https://discord.com/api/oauth2/authorize",
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tokenURL: "https://discord.com/api/oauth2/token",
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userInfoURL: "https://discord.com/api/users/@me",
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}}
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}
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// FetchAuthUser returns an AuthUser instance from Discord's user api.
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//
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// API reference: https://discord.com/developers/docs/resources/user#user-object
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func (p *Discord) FetchAuthUser(token *oauth2.Token) (*AuthUser, error) {
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data, err := p.FetchRawUserInfo(token)
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if err != nil {
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return nil, err
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}
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rawUser := map[string]any{}
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if err := json.Unmarshal(data, &rawUser); err != nil {
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return nil, err
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}
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extracted := struct {
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Id string `json:"id"`
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GlobalName string `json:"global_name"`
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Username string `json:"username"`
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Discriminator string `json:"discriminator"`
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Avatar string `json:"avatar"`
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Email string `json:"email"`
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Verified bool `json:"verified"`
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}{}
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if err := json.Unmarshal(data, &extracted); err != nil {
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return nil, err
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}
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// build a full avatar URL using the avatar hash provided in the API response
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// https://discord.com/developers/docs/reference#image-formatting
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var avatarURL string
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if extracted.Avatar != "" {
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avatarURL = fmt.Sprintf("https://cdn.discordapp.com/avatars/%s/%s.png", extracted.Id, extracted.Avatar)
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}
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name := extracted.GlobalName
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if name == "" {
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// fallback to username+discriminator
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//
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// Note: Discord migrated to unique usernames without discriminators.
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// Legacy accounts still have a non-zero discriminator (e.g. "1234").
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// See https://support.discord.com/hc/en-us/articles/12620128861463-New-Usernames-Display-Names.
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name = extracted.Username
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if extracted.Discriminator != "" && extracted.Discriminator != "0" {
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name += "#" + extracted.Discriminator
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}
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}
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user := &AuthUser{
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Id: extracted.Id,
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Name: name,
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Username: extracted.Username,
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AvatarURL: avatarURL,
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RawUser: rawUser,
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AccessToken: token.AccessToken,
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RefreshToken: token.RefreshToken,
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}
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user.Expiry, _ = types.ParseDateTime(token.Expiry)
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if extracted.Verified {
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user.Email = extracted.Email
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}
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return user, nil
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}
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