/**
 *  Copyright (C) 2010 Cloud.com, Inc.  All rights reserved.
 * 
 * This software is licensed under the GNU General Public License v3 or later.
 * 
 * It is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */

package com.cloud.api.commands;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.log4j.Logger;

import com.cloud.api.BaseCmd;
import com.cloud.api.ServerApiException;
import com.cloud.dc.DataCenterVO;
import com.cloud.storage.Storage.FileSystem;
import com.cloud.storage.Storage.ImageFormat;
import com.cloud.storage.VMTemplateHostVO;
import com.cloud.storage.VMTemplateStorageResourceAssoc.Status;
import com.cloud.storage.VMTemplateVO;
import com.cloud.user.Account;
import com.cloud.utils.Pair;

public class RegisterIsoCmd extends BaseCmd {
    public static final Logger s_logger = Logger.getLogger(RegisterIsoCmd.class.getName());

    private static final String s_name = "registerisoresponse";
    private static final List<Pair<Enum, Boolean>> s_properties = new ArrayList<Pair<Enum, Boolean>>();

    static {
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.NAME, Boolean.TRUE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.DISPLAY_TEXT, Boolean.TRUE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.URL, Boolean.TRUE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.ACCOUNT_OBJ, Boolean.FALSE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.ACCOUNT, Boolean.FALSE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.USER_ID, Boolean.FALSE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.DOMAIN_ID, Boolean.FALSE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.IS_PUBLIC, Boolean.FALSE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.IS_FEATURED, Boolean.FALSE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.OS_TYPE_ID, Boolean.TRUE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.BOOTABLE, Boolean.FALSE));
        s_properties.add(new Pair<Enum, Boolean>(BaseCmd.Properties.ZONE_ID, Boolean.TRUE));
    }

    @Override
    public String getName() {
        return s_name;
    }
    @Override
    public List<Pair<Enum, Boolean>> getProperties() {
        return s_properties;
    }

    @Override
    public List<Pair<String, Object>> execute(Map<String, Object> params) {
        Account account = (Account)params.get(BaseCmd.Properties.ACCOUNT_OBJ.getName());
        String accountName = (String)params.get(BaseCmd.Properties.ACCOUNT.getName());
        Long domainId = (Long)params.get(BaseCmd.Properties.DOMAIN_ID.getName());
        Long userId = (Long)params.get(BaseCmd.Properties.USER_ID.getName());
        String name = (String)params.get(BaseCmd.Properties.NAME.getName());
        String displayText = (String)params.get(BaseCmd.Properties.DISPLAY_TEXT.getName());
        String url = (String)params.get(BaseCmd.Properties.URL.getName());
        Boolean isPublic = (Boolean)params.get(BaseCmd.Properties.IS_PUBLIC.getName());
        Boolean featured = (Boolean)params.get(BaseCmd.Properties.IS_FEATURED.getName());
        Long guestOSId = (Long) params.get(BaseCmd.Properties.OS_TYPE_ID.getName());
        Boolean bootable = (Boolean) params.get(BaseCmd.Properties.BOOTABLE.getName());
        Long zoneId = (Long) params.get(BaseCmd.Properties.ZONE_ID.getName());

        if (isPublic == null) {
            isPublic = Boolean.FALSE;
        }
        
        if (zoneId.longValue() == -1) {
        	zoneId = null;
        }
        
        Long accountId = null;
        if ((account == null) || isAdmin(account.getType())) {
            if (domainId != null) {
                if ((account != null) && !getManagementServer().isChildDomain(account.getDomainId(), domainId)) {
                    throw new ServerApiException(BaseCmd.PARAM_ERROR, "Invalid domain id (" + domainId + ") ");
                }
                if (accountName != null) {
                    Account userAccount = getManagementServer().findActiveAccount(accountName, domainId);
                    if (userAccount == null) {
                        throw new ServerApiException(BaseCmd.PARAM_ERROR, "Unable to find account " + accountName + " in domain " + domainId);
                    }
                    accountId = userAccount.getId();
                }
            } else {
                accountId = ((account != null) ? account.getId() : null);
            }
        } else {
            accountId = account.getId();
        }

        if (accountId == null) {
            throw new ServerApiException(BaseCmd.ACCOUNT_ERROR, "No valid account specified for registering ISO.");
        }
        
        boolean isAdmin = getManagementServer().findAccountById(accountId).getType() == Account.ACCOUNT_TYPE_ADMIN;
        
        if (!isAdmin && zoneId == null) {
        	throw new ServerApiException(BaseCmd.PARAM_ERROR, "Please specify a valid zone Id.");
        }
        
        if((!url.toLowerCase().endsWith("iso"))&&(!url.toLowerCase().endsWith("iso.zip"))&&(!url.toLowerCase().endsWith("iso.bz2"))
        		&&(!url.toLowerCase().endsWith("iso.gz"))){
        	throw new ServerApiException(BaseCmd.PARAM_ERROR, "Please specify a valid iso");
        }
        
        boolean allowPublicUserTemplates = Boolean.parseBoolean(getManagementServer().getConfigurationValue("allow.public.user.templates"));        
        if (!isAdmin && !allowPublicUserTemplates && isPublic) {
        	throw new ServerApiException(BaseCmd.PARAM_ERROR, "Only private ISOs can be created.");
        }
        
        if (!isAdmin || featured == null) {
        	featured = Boolean.FALSE;
        }

        // If command is executed via 8096 port, set userId to the id of System account (1)
        if (userId == null) {
            userId = Long.valueOf(1);
        }
        
        if (bootable == null) {
        	bootable = Boolean.TRUE;
        }

        //removing support for file:// type urls (bug: 4239)
        if(url.toLowerCase().contains("file://")){
        	throw new ServerApiException(BaseCmd.PARAM_ERROR, "File:// type urls are currently unsupported");
        }
        
        Long templateId;
        try {
        	templateId = getManagementServer().createTemplate(userId, accountId, zoneId, name, displayText, isPublic.booleanValue(), featured.booleanValue(), ImageFormat.ISO.toString(), FileSystem.cdfs.toString(), url, null, true, 64 /*bits*/, false, guestOSId, bootable);
        } catch (Exception ex) {
            throw new ServerApiException(BaseCmd.INTERNAL_ERROR, ex.getMessage());
        }
        
            
        VMTemplateVO template = getManagementServer().findTemplateById(templateId);        
        List<Pair<String, Object>> isoTags = new ArrayList<Pair<String, Object>>();
    	List<Object> iTagList = new ArrayList<Object>();
        if (template != null) {
        	List<DataCenterVO> zones = null;
        	
        	if (zoneId != null) {
        		zones = new ArrayList<DataCenterVO>();
        		zones.add(getManagementServer().findDataCenterById(zoneId));
        	} else {
        		zones = getManagementServer().listDataCenters();   
        	}
        	
        	for (DataCenterVO zone : zones) {
        		VMTemplateHostVO isoHostRef = getManagementServer().findTemplateHostRef(templateId, zone.getId());                		

        		// Use embeded object for response
        		List<Pair<String, Object>> listForEmbeddedObject = new ArrayList<Pair<String, Object>>();
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.ID.getName(), template.getId().toString()));
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.NAME.getName(), template.getName()));
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.DISPLAY_TEXT.getName(), template.getDisplayText()));
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.IS_PUBLIC.getName(), Boolean.valueOf(template.isPublicTemplate()).toString()));
        		
        		if (isoHostRef != null) {
        			listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.CREATED.getName(), getDateString(isoHostRef.getCreated())));
        		}
        		
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.IS_READY.getName(), (isoHostRef != null && isoHostRef.getDownloadState() == Status.DOWNLOADED)));
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.IS_FEATURED.getName(), Boolean.valueOf(template.isFeatured()).toString()));
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.BOOTABLE.getName(), Boolean.valueOf(template.isBootable()).toString()));
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.OS_TYPE_ID.getName(), template.getGuestOSId()));
        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.OS_TYPE_NAME.getName(), getManagementServer().findGuestOSById(template.getGuestOSId()).getName()));
        				
        		Account owner = getManagementServer().findAccountById(template.getAccountId());
        		if (owner != null) {
        			listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.ACCOUNT_ID.getName(), owner.getId()));
        			listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.ACCOUNT.getName(), owner.getAccountName()));
        			listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.DOMAIN_ID.getName(), owner.getDomainId()));
        		}

        		listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.ZONE_ID.getName(), zone.getId()));
    			listForEmbeddedObject.add(new Pair<String, Object>(BaseCmd.Properties.ZONE_NAME.getName(), zone.getName()));

    			iTagList.add(listForEmbeddedObject);            		
        	}
        }
        
        Object[] iTag = new Object[iTagList.size()];
        for (int i = 0; i < iTagList.size(); i++) {
        	iTag[i] = iTagList.get(i);
        }
                               
        Pair<String, Object> templateTag = new Pair<String, Object>("iso", iTag);
        isoTags.add(templateTag);

        return isoTags;
    }
}