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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 com.aliyuncs;

import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.util.HashMap;
import java.util.Map;

import com.aliyuncs.auth.Credential;
import com.aliyuncs.auth.ISigner;
import com.aliyuncs.auth.RpcSignatureComposer;
import com.aliyuncs.http.FormatType;
import com.aliyuncs.http.HttpRequest;
import com.aliyuncs.http.MethodType;
import com.aliyuncs.regions.ProductDomain;

public abstract class RpcAcsRequest extends AcsRequest {

    public RpcAcsRequest(String product) {
        super(product);
        initialize();
    }

    public RpcAcsRequest(String product, String version) {
        super(product);
        this.setVersion(version);
        initialize();
    }

    public RpcAcsRequest(String product, String version, String action) {
        super(product);
        this.setVersion(version);
        this.setActionName(action);
        initialize();
    }

    public RpcAcsRequest(String product, String version, String action, String locationProduct) {
        super(product);
        this.setVersion(version);
        this.setActionName(action);
        this.setLocationProduct(locationProduct);
        initialize();
    }

    public RpcAcsRequest(String product, String version, String action, String locationProduct, String endpointType) {
        super(product);
        this.setVersion(version);
        this.setActionName(action);
        this.setLocationProduct(locationProduct);
        this.setEndpointType(endpointType);
        initialize();
    }

    private void initialize() {
        this.setMethod(MethodType.GET);
        this.setAcceptFormat(FormatType.XML);
        this.composer = RpcSignatureComposer.getComposer();
    }

    @Override
    public void setActionName(String actionName) {
        super.setActionName(actionName);
        this.putQueryParameter("Action", actionName);
    }

    @Override
    public void setVersion(String version) {
        super.setVersion(version);
        this.putQueryParameter("Version", version);
    }

    @Override
    public void setSecurityToken(String securityToken) {
        super.setSecurityToken(securityToken);
        this.putQueryParameter("SecurityToken", securityToken);
    }

    @Override
    public void setAcceptFormat(FormatType acceptFormat) {
        super.setAcceptFormat(acceptFormat);
        this.putQueryParameter("Format", acceptFormat.toString());
    }

    public String composeUrl(String endpoint, Map queries) throws UnsupportedEncodingException {
        Map mapQueries = (queries == null) ? this.getQueryParameters() : queries;
        StringBuilder urlBuilder = new StringBuilder("");
        urlBuilder.append(this.getProtocol().toString());
        urlBuilder.append("://").append(endpoint);
        if (-1 == urlBuilder.indexOf("?")) {
            urlBuilder.append("/?");
        }
        String query = concatQueryString(mapQueries);
        return urlBuilder.append(query).toString();
    }

    @Override
    public HttpRequest signRequest(ISigner signer, Credential credential, FormatType format, ProductDomain domain)
            throws InvalidKeyException, IllegalStateException, UnsupportedEncodingException {
        Map imutableMap = new HashMap(this.getQueryParameters());
        if (null != signer && null != credential) {
            String accessKeyId = credential.getAccessKeyId();
            String accessSecret = credential.getAccessSecret();
            imutableMap = this.composer.refreshSignParameters(this.getQueryParameters(), signer, accessKeyId, format);
            imutableMap.put("RegionId", getRegionId());
            String strToSign = this.composer.composeStringToSign(this.getMethod(), null, signer, imutableMap, null,
                    null);
            String signature = signer.signString(strToSign, accessSecret + "&");
            imutableMap.put("Signature", signature);
        }
        setUrl(this.composeUrl(domain.getDomianName(), imutableMap));
        return this;
    }
}