/*
 * Copyright (C) 2012 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package retrofit;

import java.io.IOException;
import java.lang.reflect.Type;

import retrofit.client.Response;
import retrofit.converter.ConversionException;
import retrofit.converter.Converter;
import retrofit.mime.TypedInput;

public class RetrofitError extends RuntimeException {
    private final String url;
    private final Response response;
    private final Converter converter;
    private final Type successType;
    private final boolean networkError;

    private RetrofitError(String url, Response response, Converter converter, Type successType, boolean networkError, Throwable exception) {
        super(exception);
        this.url = url;
        this.response = response;
        this.converter = converter;
        this.successType = successType;
        this.networkError = networkError;
    }

    public static RetrofitError networkError(String url, IOException exception) {
        return new RetrofitError(url, null, null, null, true, exception);
    }

    public static RetrofitError conversionError(String url, Response response, Converter converter, Type successType, ConversionException exception) {
        return new RetrofitError(url, response, converter, successType, false, exception);
    }

    public static RetrofitError httpError(String url, Response response, Converter converter, Type successType) {
        return new RetrofitError(url, response, converter, successType, false, null);
    }

    public static RetrofitError unexpectedError(String url, Throwable exception) {
        return new RetrofitError(url, null, null, null, false, exception);
    }

    /**
     * The request URL which produced the error.
     */
    public String getUrl() {
        return url;
    }

    /**
     * Response object containing status code, headers, body, etc.
     */
    public Response getResponse() {
        return response;
    }

    /**
     * Whether or not this error was the result of a network error.
     */
    public boolean isNetworkError() {
        return networkError;
    }

    /**
     * HTTP response body converted to the type declared by either the interface method return type or
     * the generic type of the supplied {@link Callback} parameter.
     */
    public Object getBody() {
        TypedInput body = response.getBody();
        if (body == null) {
            return null;
        }
        try {
            return converter.fromBody(body, successType);
        } catch (ConversionException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * HTTP response body converted to specified {@code type}.
     */
    public Object getBodyAs(Type type) {
        TypedInput body = response.getBody();
        if (body == null) {
            return null;
        }
        try {
            return converter.fromBody(body, type);
        } catch (ConversionException e) {
            throw new RuntimeException(e);
        }
    }
}