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package com.firefly.codec.oauth2.model;

import com.firefly.codec.oauth2.exception.OAuthProblemException;
import com.firefly.codec.oauth2.model.message.types.ParameterStyle;
import com.firefly.codec.oauth2.model.message.types.ResponseType;
import com.firefly.codec.oauth2.model.message.types.TokenType;

abstract public class OAuth {

    public static final class HttpMethod {
        public static final String POST = "POST";
        public static final String GET = "GET";
        public static final String DELETE = "DELETE";
        public static final String PUT = "PUT";
    }

    public static final class HeaderType {
        public static final String CONTENT_TYPE = "Content-Type";
        public static final String WWW_AUTHENTICATE = "WWW-Authenticate";
        public static final String AUTHORIZATION = "Authorization";
    }

    public static final class WWWAuthHeader {
        public static final String REALM = "realm";
    }

    public static final class ContentType {
        public static final String URL_ENCODED = "application/x-www-form-urlencoded";
        public static final String JSON = "application/json";
    }

    public static final String OAUTH_RESPONSE_TYPE = "response_type";
    public static final String OAUTH_CLIENT_ID = "client_id";
    public static final String OAUTH_CLIENT_SECRET = "client_secret";
    public static final String OAUTH_REDIRECT_URI = "redirect_uri";
    public static final String OAUTH_USERNAME = "username";
    public static final String OAUTH_PASSWORD = "password";
    public static final String OAUTH_ASSERTION_TYPE = "assertion_type";
    public static final String OAUTH_ASSERTION = "assertion";
    public static final String OAUTH_SCOPE = "scope";
    public static final String OAUTH_STATE = "state";
    public static final String OAUTH_GRANT_TYPE = "grant_type";

    public static final String OAUTH_HEADER_NAME = "Bearer";

    //Authorization response params
    public static final String OAUTH_CODE = "code";
    public static final String OAUTH_ACCESS_TOKEN = "access_token";
    public static final String OAUTH_EXPIRES_IN = "expires_in";
    public static final String OAUTH_REFRESH_TOKEN = "refresh_token";

    public static final String OAUTH_TOKEN_TYPE = "token_type";

    public static final String OAUTH_TOKEN = "oauth_token";

    public static final String OAUTH_TOKEN_DRAFT_0 = "access_token";
    public static final String OAUTH_BEARER_TOKEN = "access_token";

    public static final ParameterStyle DEFAULT_PARAMETER_STYLE = ParameterStyle.HEADER;
    public static final TokenType DEFAULT_TOKEN_TYPE = TokenType.BEARER;

    public static final String OAUTH_VERSION_DIFFER = "oauth_signature_method";

    public static final String ASSERTION = "assertion";

    public static OAuthProblemException oauthProblem(String error) {
        return OAuthProblemException.error(error);
    }

    public static AuthorizationRequest.Builder authRequest() {
        return AuthorizationRequest.newInstance();
    }

    public static AuthorizationRequest.Builder codeRequest() {
        return authRequest().responseType(ResponseType.CODE.toString());
    }

    public static AuthorizationRequest.Builder tokenRequest() {
        return authRequest().responseType(ResponseType.TOKEN.toString());
    }

    public static AuthorizationCodeAccessTokenRequest.Builder codeAccessTokenRequest() {
        return AuthorizationCodeAccessTokenRequest.newInstance();
    }

    public static AuthorizationCodeAccessTokenRequest.Builder code(String code) {
        return codeAccessTokenRequest().code(code);
    }

    public static PasswordAccessTokenRequest.Builder pwdAccessTokenRequest() {
        return PasswordAccessTokenRequest.newInstance();
    }

    public static PasswordAccessTokenRequest.Builder usernameAndPassword(String username, String password) {
        return pwdAccessTokenRequest().username(username).password(password);
    }

    public static ClientCredentialAccessTokenRequest.Builder credAccessTokenRequest() {
        return ClientCredentialAccessTokenRequest.newInstance();
    }

    public static RefreshingTokenRequest.Builder refreshingTokenRequest() {
        return RefreshingTokenRequest.newInstance();
    }

    public static RefreshingTokenRequest.Builder refreshToken(String refreshToken) {
        return refreshingTokenRequest().refreshToken(refreshToken);
    }
}