/*
 * Copyright 2010-2013, CloudBees 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 com.cloudbees.sdk.commands.bg;

import com.cloudbees.api.ApplicationInfo;
import com.cloudbees.api.BeesClient;
import com.cloudbees.sdk.cli.BeesCommand;
import com.cloudbees.sdk.cli.CLICommand;
import com.cloudbees.sdk.cli.CommandService;

import javax.inject.Inject;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

@BeesCommand(group="Application", description = "Get Blue-Green application information")
@CLICommand("app:bg:info")
public class ApplicationBlueGreenInfo extends ApplicationBlueGreenBase {
    @Inject
    CommandService cs;

    public ApplicationBlueGreenInfo() {
    }

    @Override
    public int main() throws Exception {
        BeesClient client = getBeesClient(BeesClient.class);

        List<String> applicationIds = getApplicationIds(client, getName());
        System.out.println();
        System.out.println("PRIMARY APPLICATION");
        System.out.println("===================");
        displayApplicationInfo(applicationIds.get(0));

        System.out.println();
        System.out.println("SECONDARY APPLICATION");
        System.out.println("=====================");
        displayApplicationInfo(applicationIds.get(1));

        return 0;
    }

    protected List<String> getApplicationIds(BeesClient client, String name) throws IOException {
        try {
            List<String> applicationIds = new ArrayList<String>();
            BlueGreenSettings blueGreenSettings = BlueGreenSettings.getInstance(client, getAccount(), name);
            System.out.println("Blue-Green settings for: " + getName());
            System.out.println("  Primary Aliases: " + blueGreenSettings.getActiveAliasesString());
            System.out.println("  Application 1  : " + blueGreenSettings.getApplication1());
            System.out.println("  Application 2  : " + blueGreenSettings.getApplication2());
            // Get the app1 alias
            ApplicationInfo applicationInfo = client.applicationInfo(blueGreenSettings.getApplication1());
            String aliases = applicationInfo.getSettings().get("aliases");
            ApplicationAlias application1 = new ApplicationAlias(getAccount(), blueGreenSettings.getApplication1(), aliases);

            // If the app1 has the alias already, it is the active one
            if (application1.containAliases(blueGreenSettings.getActiveAliases())) {
                applicationIds.add(blueGreenSettings.getApplication1());
                applicationIds.add(blueGreenSettings.getApplication2());
            // If the app1 does not have the alias, it is the passive one
            } else {
                applicationIds.add(blueGreenSettings.getApplication2());
                applicationIds.add(blueGreenSettings.getApplication1());
            }

            return applicationIds;
        } catch (IllegalArgumentException e) {
            throw e;
        } catch (Exception e) {
            throw new IllegalArgumentException("Application not configured for Blue-Green deployment.", e);
        }
    }

    protected void displayApplicationInfo(String appId) throws Exception {
        List<String> deployArgs = new ArrayList<String>();
        deployArgs.add(0,"app:info");
        deployArgs.add("-a");
        deployArgs.add(appId);
        cs.getCommand("app:info").run(deployArgs);
    }
}
