<apex:page standardController="Opportunity" extensions="closeOppExtension" sidebar="false" docType="html-5.0">
    
    <apex:messages />
    
    <apex:form >
        <apex:pageBlock title="Close Opportunity">
            
            <p/>
            <b> Please confirm that all of the information on this screen is accurate in order to close the opportunity. </b>

            
            <apex:pageBlockSection columns="1" >
                
                <apex:inputField value="{! Opportunity.Name }" required="true" />
                <apex:inputField value="{! Opportunity.CloseDate }" required="true" />
                <apex:inputField value="{! Opportunity.Type }" required="true" />
                
                
                <apex:selectList id="chooseStage" value="{! selectedValue }" size="1" required="true" label="Stage" >
                    <apex:selectOption itemValue="" itemLabel="Please select closed stage..." /> 
                    <apex:selectOption itemValue="Deal Won" itemLabel="Deal Won" />
                    <apex:selectOption itemValue="Deal Lost" itemLabel="Deal Lost" />
                    <apex:selectOption itemValue="Disqualified" itemLabel="Disqualified" />
                    <apex:actionSupport event="onchange" action="{! showSection }" />
                </apex:selectList>
                
            </apex:pageBlockSection>
            
            <apex:pageBlockSection rendered="{! renderWon }" columns="1" >
            
                <apex:inputField value="{! Opportunity.Amount }" required="true"/>
                <apex:inputField value="{! Opportunity.ARR_Amount__c }" required="true" />
                <apex:inputField value="{! Opportunity.Subscription_Start_Date__c }" required="true" />
                <apex:inputField value="{! Opportunity.Subscription_End_Date__c }" required="true" />
                <apex:inputText value="{! Renewal_Start }" label="Renewal License Start Date" onclick="DatePicker.pickDate(false, this, false);" onfocus="DatePicker.pickDate(false, this, false);" required="true"/>
                <apex:inputText value="{! Renewal_End }" label="Renewal License End Date"  onclick="DatePicker.pickDate(false, this, false);" onfocus="DatePicker.pickDate(false, this, false);" required="true"/>
                <apex:inputText value="{! Renewal_Name }" label="Renewal Opportunity Name"  required="true" />
                <apex:inputField value="{! Opportunity.Number_of_Devices__c }" required="true" />
                <apex:inputField value="{! Opportunity.Opportunity_Channel__c }" required="true" />
                <apex:inputField value="{! Opportunity.Product_Interest__c }" required="true" />
                
            </apex:pageBlockSection>
            
            <apex:pageBlockSection rendered="{! renderLost }" columns="1" >
            
                <apex:inputField value="{! Opportunity.Amount }" required="true" />
                <apex:inputField value="{! Opportunity.ARR_Amount__c }" />
                <apex:inputField value="{! Opportunity.DQ_Loss_Reason__c }" required="true" />
                <apex:inputField value="{! Opportunity.Number_of_Devices__c }" />
                <apex:inputField value="{! Opportunity.Opportunity_Channel__c }" required="true" />
                <apex:inputField value="{! Opportunity.Product_Interest__c }" required="true" />
                
            </apex:pageBlockSection>
            
            <apex:pageBlockSection rendered="{! renderDQ }" columns="1" >
            
                <apex:inputField value="{! Opportunity.Amount }" />
                <apex:inputField value="{! Opportunity.ARR_Amount__c }" />
                <apex:inputField value="{! Opportunity.Number_of_Devices__c }" />
                <apex:inputField value="{! Opportunity.Opportunity_Channel__c }" />
                <apex:inputField value="{! Opportunity.Product_Interest__c }" />
                
            </apex:pageBlockSection>
            
            
            <apex:pageBlockButtons >
                <apex:commandButton action="{! save }" value="Save" />
            </apex:pageBlockButtons>
            
        </apex:pageBlock>
                
    </apex:form>
    
</apex:page>

public with sharing class closeOppExtension {
    
    // get ID from URL
    // public void ApexPages.currentPage().getParameters().get('id')
    
    public List<SelectOption> getItems() {
        List<SelectOption> options = new List<SelectOption>();
        options.add(new SelectOption('Deal Won','Deal Won'));
        options.add(new SelectOption('Deal Lost','Deal Lost'));
        options.add(new SelectOption('Disqualified','Disqualified'));
        return options;
    }
    
    public String selectedValue {get; set;}
    public Boolean renderWon {get; set;}
    public Boolean renderLost {get; set;}
    public Boolean renderDQ {get; set;}
    
    // set all of the render pageblocks as false when the page opens
    public closeOppExtension() {
        renderWon = renderLost = renderDQ = false;
    }
    
    // show the appropiate pageblock based on the picklist selection
    // hide the other pageblocks - important if the user chooses another picklist value
    public void showSection() {
        if(selectedValue == 'Deal Won') {
            renderWon = true;
            renderLost = false;
            renderDQ = false;
        }
        else if(selectedValue == 'Deal Lost') {
            renderWon = false; 
            renderLost = true;
            renderDQ = false;
        }
        else if(selectedValue == 'Disqualified') {
            renderWon = false;
            renderLost = false;
            renderDQ = true;
        }
    }
    
    public Opportunity opp {get; set;}
    public Opportunity RenewalOpp {get; set;}
    // private ApexPages.StandardController stdController;
    
    private Date today = date.today();
    
    public Date Renewal_Start {get; set;}
    public Date Renewal_End {get; set;}
    public String Renewal_Name {get; set;}
    
    // calculate standard subscription start and end dates to prepopulate input field areas
	public closeOppExtension(ApexPages.StandardController stdController) {
		opp = (Opportunity)stdController.getRecord();
        opp.Subscription_Start_Date__c = date.newInstance(date.today().year(), date.today().month() + 1, 1);
        opp.Subscription_End_Date__c = date.newInstance(date.today().year() + 1, date.today().month() + 1, 1) - 1;
        Renewal_Start = date.newInstance(today.year() + 1, today.month() + 1, 1);
        // date Renewal_Start = RenewalOpp.Subscription_Start_Date__c;
        Renewal_End = date.newInstance(Renewal_Start.year() + 1, Renewal_Start.month() + 1, 1) - 1;
	}
    
    public ID oppID {get; set;}
    
}