OAuth / Social Login

use better_auth::plugins::OAuthPlugin;
use better_auth::plugins::oauth::OAuthProvider;

let auth = BetterAuth::new(config)
    .database(database)
    .plugin(
        OAuthPlugin::new()
            .add_provider("google", OAuthProvider::google(
                "GOOGLE_CLIENT_ID",
                "GOOGLE_CLIENT_SECRET",
            ))
            .add_provider("github", OAuthProvider::github(
                "GITHUB_CLIENT_ID",
                "GITHUB_CLIENT_SECRET",
            ))
    )
    .build()
    .await?;

use better_auth::plugins::oauth::{OAuthProvider, OAuthUserInfo};

let custom_provider = OAuthProvider {
    client_id: "your-client-id".to_string(),
    client_secret: "your-client-secret".to_string(),
    auth_url: "https://provider.com/oauth/authorize".to_string(),
    token_url: "https://provider.com/oauth/token".to_string(),
    user_info_url: "https://provider.com/api/userinfo".to_string(),
    scopes: vec!["openid".to_string(), "email".to_string()],
    map_user_info: |v| {
        Ok(OAuthUserInfo {
            id: v["sub"].as_str().ok_or("missing sub")?.to_string(),
            email: v["email"].as_str().ok_or("missing email")?.to_string(),
            name: v["name"].as_str().map(String::from),
            image: v["avatar"].as_str().map(String::from),
            email_verified: v["email_verified"].as_bool().unwrap_or(false),
        })
    },
};

let auth = BetterAuth::new(config)
    .database(database)
    .plugin(
        OAuthPlugin::new()
            .add_provider("custom", custom_provider)
    )
    .build()
    .await?;