OxygenLogin

//2013-02-19 johnpfeiffer
//TODO: apiURL validation of the URL new URI?
//TODO: logging

package com.oxygencloud.sdk.util;


import java.util.Set;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.constraints.NotNull;

import com.oxygen.sdk.O2Agent;
import com.oxygen.sdk.O2AgentFactory;
import com.oxygen.sdk.O2SessionInfo;
import com.oxygen.sdk.exception.O2NetworkException;
import com.oxygen.sdk.exception.O2RuleException;
import com.oxygen.sdk.exception.O2UnexpectedException;

public class OxygenLogin
{
    public static final String CLASSVERSION = "0.21";
    private O2Agent agent = null;
    private String sessionId;
    private static long loginDurationInMilliseconds;

    @NotNull( message = "ERROR: apiURL cannot be null" )
    private String apiURL;

    @NotNull( message = "ERROR: apiKey cannot be null" )
    private String apiKey;

    @NotNull( message = "ERROR: oxygenUserId cannot be null" )
    private String oxygenUserId;

    @NotNull( message = "ERROR: password cannot be null" )
    private String oxygenPassword;


    public static class Builder
    {
        @NotNull( message = "ERROR: apiURL cannot be null" )
        private String apiURL;

        @NotNull( message = "ERROR: apiKey cannot be null" )
        private String apiKey;

        @NotNull( message = "ERROR: oxygenUserId cannot be null" )
        private String oxygenUserId;

        @NotNull( message = "ERROR: oxygenUserId cannot be null" )
        private String oxygenPassword;

        private O2Agent agent = null;
        private O2SessionInfo session = null;
        private String sessionId;


        O2AgentFactory o2AgentFactory = null;

        private long applicationStartTime = System.currentTimeMillis();


        public Builder apiURL( String apiURL )
        {
            this.apiURL = apiURL;
            return this;
        }

        public Builder apiKey( String apiKey )
        {
            this.apiKey = apiKey;
            return this;
        }

        public Builder oxygenUserId( String userId )
        {
            this.oxygenUserId = userId;
            return this;
        }

        public Builder oxygenPassword( String password )
        {
            this.oxygenPassword = password;
            return this;
        }

        //for injection and testability
        public Builder O2AgentFactory( O2AgentFactory o2AgentFactory )
        {
            this.o2AgentFactory = o2AgentFactory;
            return this;
        }

        public OxygenLogin build() throws IllegalArgumentException, O2NetworkException, O2RuleException, O2UnexpectedException
        {

            OxygenLogin oxygenLogin = new OxygenLogin( this ); // object may exist in an incomplete or illegal state
            OxygenLoginValidator( oxygenLogin );

            if( o2AgentFactory == null )
            {
// TODO: clean this up!             O2AgentFactory test = new O2AgentFactory();
                agent = O2AgentFactory.createAndroidO2AgentCustomURL( apiURL );
                session = agent.login( apiKey , oxygenUserId , oxygenPassword );
                sessionId = session.getSessionID();
            }
            else
            {
                agent = o2AgentFactory.createAndroidO2AgentCustomURL( apiURL );
                session = agent.login( apiKey , oxygenUserId , oxygenPassword );
                sessionId = session.getSessionID();
            }

            loginDurationInMilliseconds = System.currentTimeMillis() - applicationStartTime;
            return new OxygenLogin( this );
        }

        private static Validator validator = Validation.buildDefaultValidatorFactory().getValidator();

        private void OxygenLoginValidator( OxygenLogin oxygenLogin ) throws IllegalArgumentException
        {
            Set <ConstraintViolation <OxygenLogin>> violations = validator.validate( oxygenLogin );
            if( !violations.isEmpty() )
            {
                for( ConstraintViolation <?> v : violations )
                {
                    throw new IllegalArgumentException( v.getMessage() );
                }
            }
            // ConstraintViolations ensure all of the values are non null

        }

    } // end inner class


    //java -jar getoxygenspace-0.1.jar https://api-qa.oxygencloud.com/gateway 3095198fc5bf433799cdc5bdf0d56a62 john-enterprise-qa Sandbox7 Shared
    private OxygenLogin( Builder builder )
    {
        this.apiURL = builder.apiURL;
        this.apiKey = builder.apiKey;
        this.oxygenUserId = builder.oxygenUserId;
        this.oxygenPassword = builder.oxygenPassword;
        this.agent = builder.agent;
        this.sessionId = builder.sessionId;

    }


    O2Agent getAgent()
    {
        return agent;
    }

    String getSessionId()
    {
        return sessionId;
    }

    long getLoginDurationInMilliseconds()
    {
        return loginDurationInMilliseconds;
    }


} // end class