public class WhatsAppUtils {
    
    public static List<WAMessage__c> listAllMessageByCustomer(String customerPhone){
        List<WAMessage__c> messages = new List<WAMessage__c>();
        messages = [SELECT Id, Name, MessageContent__c, MessageType__c, Outgoing__c FROM WAMessage__c WHERE CustomerPhone__c =: customerPhone];
        return messages;
    }
    public static WAMessage__c sendTextMessage(String messageContent, String toPhone){
        
        HttpRequest httpReq = new HttpRequest();
        httpReq.setEndpoint('https://graph.facebook.com/v13.0/YOUR_ACCOUNT_ID/messages');
        httpReq.setMethod('POST');
        httpReq.setHeader('Content-Type', 'application/json');
        httpReq.setHeader('Authorization', 'Bearer '+System.Label.WHATSAPPACCESSTOKEN);
        
        String messageBody = '{'+
		'    "messaging_product": "whatsapp",'+
		'    "recipient_type": "individual",'+
		'    "to": "'+toPhone+'",'+
		'    "type": "text",'+
		'    "text": {'+
		'        "preview_url": false,'+
		'        "body": "'+messageContent+'"'+
		'    }'+
		'}';
        
        httpReq.setBody(messageBody);
        
        Http http = new Http();
        WAMessage__c salesforceMessage = new WAMessage__c();
        try{
            HttpResponse response = http.send(httpReq);
            if( response.getStatusCode() == 200 ){
                // Parse & Create Message Record
                System.debug('Successful!');
                WhatsAppUtils responseFromWA = (WhatsAppUtils) JSON.deserialize( response.getBody() , WhatsAppUtils.class);
                
                salesforceMessage.MessageContent__c = messageContent;
                salesforceMessage.CustomerPhone__c = toPhone;
                salesforceMessage.MessageID__c = responseFromWA.messages.get(0).id;
                salesforceMessage.MessageType__c = 'text';
                salesforceMessage.Outgoing__c = True;
                salesforceMessage.AgentName__c = UserInfo.getFirstName()+' '+ UserInfo.getLastName();
                upsert salesforceMessage MessageID__c;
            }
        }catch(System.CalloutException ex){
            System.debug(' CalloutException Executed '+ ex.getStackTraceString() );
            System.debug(' CalloutException Executed '+ ex.getMessage() );
        }catch(System.Exception ex){
            System.debug(' System.Exception Executed '+ ex.getStackTraceString() );
        }
        return salesforceMessage;
    }

    
    public static WAMessage__c sendFlightBookingConfirmationMessage(String toPhone, String name, String source, String destination){
        String body = '{'+
		'    "messaging_product": "whatsapp",'+
		'    "recipient_type": "individual",'+
		'    "to": "'+toPhone+'",'+
		'    "type": "template",'+
		'    "template": {'+
		'        "name": "flight_booking_confirm_template",'+
		'        "language": {'+
		'            "code": "en"'+
		'        },'+
		'        "components": ['+
		'            {'+
		'                "type": "header",'+
		'                "parameters": ['+
		'                    {'+
		'                        "type": "image",'+
		'                        "image": {'+
		'                            "link": "https://bit.ly/3AWkh2p"'+
		'                        }'+
		'                    }'+
		'                ]'+
		'            },'+
		'            {'+
		'                "type": "body",'+
		'                "parameters": ['+
		'                    {'+
		'                        "type": "text",'+
		'                        "text": "'+Name+'"'+
		'                    },'+
		'                    {'+
		'                        "type": "text",'+
		'                        "text": "'+source+'"'+
		'                    },'+
		'                    {'+
		'                        "type": "text",'+
		'                        "text": "'+destination+'"'+
		'                    },'+
		'                    {'+
		'                        "type": "date_time",'+
		'                        "date_time" : {'+
		'                            "fallback_value": "October 25, 2023 22:34 PM",'+
		'                            "day_of_week": 6,'+
		'                            "day_of_month": 25,'+
		'                            "year": 2023,'+
		'                            "month": 10,'+
		'                            "hour": 12,'+
		'                            "minute": 34'+
		'                        }'+
		'                    },'+
		'                    {'+
		'                        "type": "text",'+
		'                        "text": "999-999-9999"'+
		'                    }'+
		'                ]'+
		'            },'+
		'            {'+
		'                "type": "button",'+
		'                "sub_type": "quick_reply",'+
		'                "index": "0",'+
		'                "parameters": ['+
		'                    {'+
		'                        "type": "payload",'+
		'                        "payload": "Contact to Support"'+
		'                    }'+
		'                ]'+
		'            },'+
		'            {'+
		'                "type": "button",'+
		'                "sub_type": "quick_reply",'+
		'                "index": "1",'+
		'                "parameters": ['+
		'                    {'+
		'                        "type": "payload",'+
		'                        "payload": "Check PNR Status"'+
		'                    }'+
		'                ]'+
		'            }'+
		'        ]'+
		'    }'+
		'}';

        HttpRequest httpReq = new HttpRequest();
        httpReq.setEndpoint('https://graph.facebook.com/v13.0/YOUR_ACCOUNT_ID/messages');
        httpReq.setMethod('POST');
        httpReq.setHeader('Content-Type', 'application/json');
        httpReq.setHeader('Authorization', 'Bearer '+System.Label.WHATSAPPACCESSTOKEN);
        
        httpReq.setBody(body);
        
        Http http = new Http();
        WAMessage__c salesforceMessage = new WAMessage__c();
        try{
            HttpResponse response = http.send(httpReq);
            if( response.getStatusCode() == 200 ){
                // Parse & Create Message Record
                System.debug('Successful!');
                WhatsAppUtils responseFromWA = (WhatsAppUtils) JSON.deserialize( response.getBody() , WhatsAppUtils.class);
                
                salesforceMessage.MessageContent__c = body;
                salesforceMessage.CustomerPhone__c = toPhone;
                salesforceMessage.MessageID__c = responseFromWA.messages.get(0).id;
                salesforceMessage.MessageType__c = 'template';
                salesforceMessage.Outgoing__c = True;
                salesforceMessage.AgentName__c = UserInfo.getFirstName()+' '+ UserInfo.getLastName();
                upsert salesforceMessage MessageID__c;
            }
        }catch(System.CalloutException ex){
            System.debug(' CalloutException Executed '+ ex.getStackTraceString() );
            System.debug(' CalloutException Executed '+ ex.getMessage() );
        }catch(System.Exception ex){
            System.debug(' System.Exception Executed '+ ex.getStackTraceString() );
        }
        return salesforceMessage;
    }

	public static WAMessage__c sendMediaMessages(String toPhone, String url){
		HttpRequest httpReq = new HttpRequest();
        httpReq.setEndpoint('https://graph.facebook.com/v13.0/YOUR_ACCOUNT_ID/messages');
        httpReq.setMethod('POST');
        httpReq.setHeader('Content-Type', 'application/json');
        httpReq.setHeader('Authorization', 'Bearer '+System.Label.WHATSAPPACCESSTOKEN);
        
		if(String.isBlank(url)){
			url = '';
		}

		String body = '{'+
		'    "messaging_product": "whatsapp",'+
		'    "recipient_type": "individual",'+
		'    "to": "'+toPhone+'",'+
		'    "type": "document",'+
		'    "document": {'+
		'        "link": "'+url+'",'+
		'        "caption" : "Field Service Lightning Topics.pdf",'+
		'        "filename" : "Field Service Lightning Topics.pdf"'+
		'    }'+
		'}';

        httpReq.setBody(body);
        
        Http http = new Http();
        WAMessage__c salesforceMessage = new WAMessage__c();
        try{
            HttpResponse response = http.send(httpReq);
            if( response.getStatusCode() == 200 ){
                // Parse & Create Message Record
                System.debug('Successful!');
                WhatsAppUtils responseFromWA = (WhatsAppUtils) JSON.deserialize( response.getBody() , WhatsAppUtils.class);
                
                salesforceMessage.MessageContent__c = body;
                salesforceMessage.CustomerPhone__c = toPhone;
                salesforceMessage.MessageID__c = responseFromWA.messages.get(0).id;
                salesforceMessage.MessageType__c = 'media';
                salesforceMessage.Outgoing__c = True;
                salesforceMessage.AgentName__c = UserInfo.getFirstName()+' '+ UserInfo.getLastName();
                upsert salesforceMessage MessageID__c;
            }
        }catch(System.CalloutException ex){
            System.debug(' CalloutException Executed '+ ex.getStackTraceString() );
            System.debug(' CalloutException Executed '+ ex.getMessage() );
        }catch(System.Exception ex){
            System.debug(' System.Exception Executed '+ ex.getStackTraceString() );
        }
        return salesforceMessage;
	}
    
    public String messaging_product;
	public contacts[] contacts;
	public messages[] messages;
	public class contacts {
		public String input;
		public String wa_id;
	}
	public class messages {
		public String id;
	}
}