/**
 * ============LICENSE_START====================================================
 * org.onap.aaf
 * ===========================================================================
 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
 * ===========================================================================
 * 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.
 * ============LICENSE_END====================================================
 */

package org.onap.aaf.cadi.config;

import java.net.Inet4Address;
import java.net.UnknownHostException;

import org.onap.aaf.cadi.Access;
import org.onap.aaf.cadi.Access.Level;
import org.onap.aaf.cadi.CadiException;
import org.onap.aaf.cadi.util.Split;

public class RegistrationPropHolder {
	private final String PUBLIC_NAME="%NS.%N";
	private final String REGI="RegistrationProperty: %s='%s'";
	private final Access access;
	public String hostname;
	private int port;
	public String public_fqdn;
	private Integer public_port;
	public Float latitude;
	public Float longitude;
	public final String default_fqdn;
	public final String default_container_ns;
	public final String default_name;
	public final String lentries;
	public final String lcontainer;
	public final String default_container;
	private static boolean firstlog = true;

	public RegistrationPropHolder(final Access access, final int port) throws UnknownHostException, CadiException {
		this.access = access;
		StringBuilder errs = new StringBuilder();
		String str;
		this.port = port;

		lentries=access.getProperty(Config.AAF_LOCATOR_ENTRIES,"");
		default_container = access.getProperty(Config.AAF_LOCATOR_CONTAINER, "");
		if(firstlog) {
			access.printf(Level.INIT, REGI,"default_container",default_container);
		}
		if(!default_container.isEmpty()) {
			lcontainer=',' + default_container; // "" makes a blank default Public Entry
			str = access.getProperty(Config.AAF_LOCATOR_PUBLIC_PORT+'.'+default_container, null);
			if(str==null) {
				str = access.getProperty(Config.AAF_LOCATOR_PUBLIC_PORT, null);
			}
		} else {
			lcontainer=default_container;
			str = access.getProperty(Config.AAF_LOCATOR_PUBLIC_PORT, null);
		}
		if(str!=null) {
			public_port=Integer.decode(str);
		}
		if(firstlog) {
			access.printf(Level.INIT, "RegistrationProperty: public_port='%d'",public_port);
		}

		hostname = access.getProperty(Config.HOSTNAME, null);
		if (hostname==null) {
			hostname = Inet4Address.getLocalHost().getHostName();
		}
		if (hostname==null) {
			mustBeDefined(errs,Config.HOSTNAME);
		}
		if(firstlog) {
			access.printf(Level.INIT, REGI,"hostname",hostname);
		}

		public_fqdn = access.getProperty(Config.AAF_LOCATOR_PUBLIC_FQDN, hostname);
		if(firstlog) {
			access.printf(Level.INIT, REGI,"public_fqdn",public_fqdn);
		}

		// Allow Container to reset the standard name for public
		String container_public_name = access.getProperty(Config.AAF_LOCATOR_PUBLIC_NAME+'.'+default_container, null);
		if(container_public_name==null) {
			container_public_name = access.getProperty(Config.AAF_LOCATOR_PUBLIC_NAME, null);
			if(container_public_name==null) {
				container_public_name = access.getProperty(Config.AAF_LOCATOR_NAME, PUBLIC_NAME);
			}
		}
		default_name = container_public_name;
		
		if(firstlog) {
			access.printf(Level.INIT, REGI,"default_name",default_name);
		}
		
		latitude=null;
		String slatitude = access.getProperty(Config.CADI_LATITUDE, null);
		if(slatitude == null) {
			mustBeDefined(errs,Config.CADI_LATITUDE);
		} else {
			latitude = Float.parseFloat(slatitude);
		}
		if(firstlog) {
			access.printf(Level.INIT, REGI,"latitude",slatitude);
		}

		longitude=null;
		String slongitude = access.getProperty(Config.CADI_LONGITUDE, null);
		if(slongitude == null) {
			mustBeDefined(errs,Config.CADI_LONGITUDE);
		} else {
			longitude = Float.parseFloat(slongitude);
		}
		if(firstlog) {
			access.printf(Level.INIT, REGI,"longitude",slongitude);
		}

		String dot_le;
		// Note: only one of the ports can be public...  Therefore, only the last
		for(String le : Split.splitTrim(',', lcontainer)) {
			dot_le = le.isEmpty()?le :"."+le;
			str = access.getProperty(Config.AAF_LOCATOR_PUBLIC_FQDN+dot_le,null);
			if( str != null && !str.isEmpty()) {
				public_fqdn=str;
				if(firstlog) {
					access.printf(Level.INIT, "RegistrationProperty: public_hostname(overloaded by %s)='%s'",dot_le,public_fqdn);
				}
			}
		}
		
		default_fqdn = access.getProperty(Config.AAF_LOCATOR_FQDN, hostname);
		if(firstlog) {
			access.printf(Level.INIT, REGI,"default_fqdn",default_fqdn);
		}
		default_container_ns = access.getProperty(Config.AAF_LOCATOR_CONTAINER_NS,"");
		if(firstlog) {
			access.printf(Level.INIT, REGI,"default_container_ns",default_container_ns);
		}
		if(errs.length()>0) {
			throw new CadiException(errs.toString());
		}
		firstlog = false;
	}

	private void mustBeDefined(StringBuilder errs, String propname) {
		errs.append('\n');
		errs.append(propname);
		errs.append(" must be defined.");
		
	}

	public String getEntryFQDN(final String entry, final String dot_le) {
		String str;
		if(public_fqdn!=null && dot_le.isEmpty()) {
			str = public_fqdn;
		} else {
			str = access.getProperty(Config.AAF_LOCATOR_FQDN+dot_le, default_fqdn);
		}
		return replacements("RegistrationPropHolder.getEntryFQDN",str,entry,dot_le);
	}
	
	public String getEntryName(final String entry, final String dot_le) {
		String str;
		if(dot_le.isEmpty()) {
			str = default_name;
		} else {
			str = access.getProperty(Config.AAF_LOCATOR_NAME+dot_le, default_name);
		}
		return replacements("RegistrationPropHolder.getEntryName",str,entry,dot_le);
	}
	
	public String getPublicEntryName(final String entry, final String dot_le) {
		String str = access.getProperty(Config.AAF_LOCATOR_PUBLIC_NAME+dot_le, null);
		if(str==null) {
			str = access.getProperty(Config.AAF_LOCATOR_PUBLIC_NAME,null);
		}
		if(str==null) {
			str = default_name;
		}
		return replacements("RegistrationPropHolder.getEntryName",str,entry,dot_le);
	}
	
	
	private String getNS(String dot_le) {
		String ns;
		ns = access.getProperty(Config.AAF_LOCATOR_APP_NS+dot_le,null);
		if(ns==null) {
			ns = access.getProperty(Config.AAF_LOCATOR_APP_NS, "AAF_NS");
		}
		return ns;
	}

	
	public String replacements(final String fromCode, final String source, final String name, final String _dot_le) {
		if(source == null) {
			return "";
		} else if(source.isEmpty()) {
			return source;
		}
		String value = source;
		String dot_le;
		if(_dot_le==null) {
			dot_le = default_container.isEmpty()?"":'.'+default_container;
		} else {
			dot_le = _dot_le;
		}

        String aaf_locator_host = access.getProperty(Config.AAF_LOCATE_URL+dot_le,null);
        if(aaf_locator_host==null) {
        	aaf_locator_host = access.getProperty(Config.AAF_LOCATE_URL,null);
        }

        String str;
        if(aaf_locator_host!=null) {
			if("https://AAF_LOCATE_URL".equals(value)) {
				value = aaf_locator_host;
			} else {
		        str = aaf_locator_host;
				if(value.indexOf(Config.AAF_LOCATE_URL_TAG)>=0) {
					if(!str.endsWith("/")) {
						str+='/';
					}
					if(!str.endsWith("/locate/")) {
						str+="locate/";
					}
					if(value.startsWith("http:")) {
						value = value.replace("http://AAF_LOCATE_URL/", str);
					} else {
						value = value.replace("https://AAF_LOCATE_URL/", str);
						
					}
				}
			}
        }

		int atC = value.indexOf("%C"); 
		if(atC>=0) {
			// aaf_locator_container_ns
			str = access.getProperty(Config.AAF_LOCATOR_CONTAINER_NS+dot_le, default_container_ns);
			if(str.isEmpty()) {
				value = value.replace("%CNS"+'.', str);
			}
			value = value.replace("%CNS", str);
			
			str = access.getProperty(Config.AAF_LOCATOR_CONTAINER+dot_le,default_container);
			if(str.isEmpty()) {
				value = value.replace("%C"+'.', str);
			}
			value = value.replace("%C", str);
		}
		
		if(value.indexOf("%NS")>=0) {
			str = getNS(dot_le);
			if(str==null || str.isEmpty()) {
				value = value.replace("%NS"+'.', str);
			}
			value = value.replace("%NS", str);
		}

		// aaf_root_ns
		if(value.indexOf("AAF_NS")>=0) {
			str = access.getProperty(Config.AAF_ROOT_NS, Config.AAF_ROOT_NS_DEF) + '.';
			String temp = value.replace("%AAF_NS.", str);
			if(temp.equals(value)) { // intended
				value = value.replace("AAF_NS.", str); // Backward Compatibility
			} else {
				value = temp;
			}
		}

		
		if(value.indexOf('%')>=0) {
            // These shouldn't be expected to have dot elements
            if(name!=null) {
              value = value.replace("%N", name);
            }
            if(default_fqdn!=null) {
              value = value.replace("%DF", default_fqdn);
            }
            if(public_fqdn!=null) {
              value = value.replace("%PH", public_fqdn);
            }
		}
		access.printf(Level.DEBUG, 
				"RegistrationReplacement from %s, source: %s, dot_le: %s, value: %s",
				fromCode,source,dot_le,value);

		return value;
	}
	
	public int getEntryPort(final String dot_le) {
		return public_port!=null && dot_le.isEmpty()?
				public_port:
				port;
	}

	public Access access() {
		return access;
	}
}