public class BrevoContactTrigger_Handler {
    /*Method to create contact in Brevo when created in SF*/  
    
    @future(callout=true)
    public static void createContactInBrevo(String email, String firstName, String lastName, String phone, Id contactId) {
        
        try {
             // Fetch the contact record
        Contact con = [SELECT Brevo_Status__c, Brevo_List__c FROM Contact WHERE Id = :contactId];
        
        // Map the Brevo_List__c values to list IDs
        Map<String, Integer> listMap = new Map<String, Integer>{
            'Salesforce Contact'=> 7, 
            'Test List' => 8,
            'Identified Contacts' => 6
        };
        
        // Get the list IDs from the Brevo_List__c field
        List<Integer> listIds = new List<Integer>();
        for (String listName : con.Brevo_List__c.split(';')) {
            if (listMap.containsKey(listName)) {
                listIds.add(listMap.get(listName));
            }
        }
                HttpRequest req = new HttpRequest();
                Http http = new Http();
                
                req.setEndpoint('https://api.brevo.com/v3/contacts');
                req.setMethod('POST');
                req.setHeader('Content-Type', 'application/json');
                req.setHeader('api-key', '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');
                Map<String, Object> brevoContact = new Map<String, Object>();
                brevoContact.put('email', email);
                Map<String, Object> brevoAttributes = new Map<String, Object>();
                brevoAttributes.put('FIRSTNAME', firstName);
                brevoAttributes.put('LASTNAME', lastName);
                brevoAttributes.put('SMS', phone);
                brevoContact.put('attributes', brevoAttributes); 
                String brevoBody = JSON.serialize(brevoContact);
                req.setBody(brevoBody);
                
                try {
                    HttpResponse res = http.send(req);
                    if (res.getStatusCode() != 201) {
                        System.debug('Failed to create contact in Brevo with status code: ' + res.getStatusCode());
                        con.Brevo_Status__c = 'Error: ' + res.getStatusCode();
                    }else{
                        Map<String, Object> responseMap = (Map<String, Object>) JSON.deserializeUntyped(res.getBody());
                        String brevoId = String.valueOf(responseMap.get('id'));
                        //String successMessage = String.valueOf(responseMap.get('message'));
                        System.debug('Created Successfully in Brevo with ID: '+ brevoId);
                        con.Brevo_Status__c = 'Contact created in Brevo successfully: ' + ', Brevo ID: ' + brevoId;
                    }
                    database.update(con);
                } catch(Exception ex) {
                    System.debug('API call failed with message: ' + ex.getMessage());
                }
    		
        } catch(Exception ex) {
            System.debug('API call failed with message: ' + ex.getMessage());
        }
    }

    /*Method to update contact in Brevo when updated in SF Also, if update contact not exist in Brevo create new one*/
    
    @future(callout=true)
    public static void updateContactInBrevo(String email, String firstName, String lastName, String phone, Id contactId) {
        
        try {
                HttpRequest req = new HttpRequest();
                Http http = new Http();
                
                // GET request to check if the contact exists
                req.setEndpoint('https://api.brevo.com/v3/contacts/' + email);
                req.setMethod('GET');
                req.setHeader('Content-Type', 'application/json');
                req.setHeader('api-key', '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');
                
                HttpResponse res = http.send(req);
                Contact con = [SELECT Brevo_Status__c FROM Contact WHERE Id = :contactId];
                if (res.getStatusCode() == 200) {
                    // contact exists, sending a PUT request to update the contact
                    req.setMethod('PUT');
                    Map<String, Object> brevoContact = new Map<String, Object>();
                    brevoContact.put('email', email);
                    Map<String, Object> brevoAttributes = new Map<String, Object>();
                    brevoAttributes.put('FIRSTNAME', firstName);
                    brevoAttributes.put('LASTNAME', lastName);
                    brevoAttributes.put('SMS', phone);
                    brevoContact.put('attributes', brevoAttributes);
                    String brevoBody = JSON.serialize(brevoContact);
                    req.setBody(brevoBody);
                    
                    HttpResponse updateRes = http.send(req);
                    if (updateRes.getStatusCode() == 204) {
                        System.debug('Record successfully updated in Brevo with status code: ' + updateRes.getStatusCode());
                        con.Brevo_Status__c = 'Update Successfully, Brevo Email: ' + email;
                    } else {
                        System.debug('Failed to update contact in Brevo with status code: ' + updateRes.getStatusCode());
                        con.Brevo_Status__c = 'Update Error: ' + updateRes.getStatusCode();
                    }
                    database.update(con);
                } else {
                    System.debug('Contact does not exist in Brevo creating new');
                    HttpRequest req1 = new HttpRequest();
                    Http http1 = new Http();
                    
                    req1.setEndpoint('https://api.brevo.com/v3/contacts');
                    req1.setMethod('POST');
                    req1.setHeader('Content-Type', 'application/json');
                    req1.setHeader('api-key', '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');
                    Map<String, Object> brevoContact = new Map<String, Object>();
                    brevoContact.put('email', email);
                    Map<String, Object> brevoAttributes = new Map<String, Object>();
                    brevoAttributes.put('FIRSTNAME', firstName);
                    brevoAttributes.put('LASTNAME', lastName);
                    brevoAttributes.put('SMS', phone);
                    brevoContact.put('attributes', brevoAttributes);
                    String brevoBody = JSON.serialize(brevoContact);
                    req1.setBody(brevoBody);
                    
                    HttpResponse res1 = http.send(req1);
                    if (res1.getStatusCode() != 201) {
                        System.debug('Failed to create contact in Brevo with status code: ' + res.getStatusCode());
                        con.Brevo_Status__c = 'Create Error: ' + res.getStatusCode();
                    }else{
                        Map<String, Object> responseMap = (Map<String, Object>) JSON.deserializeUntyped(res1.getBody());
                        String brevoId = String.valueOf(responseMap.get('id'));
                        System.debug('Created Successfully in Brevo with ID: '+ brevoId);
                        con.Brevo_Status__c = 'Create Success, Brevo ID: ' + brevoId;
                    }
                    database.update(con);
                }
                
        } catch(Exception ex) {
            System.debug('API call failed with message: ' + ex.getMessage());
        }
    }

    /*Method to delete contact from Brevo when deleted from SF*/

    @future(callout=true)
    public static void deleteContactInBrevo(String email) {
        HttpRequest req = new HttpRequest();
        Http http = new Http();
        
        // GET request to check if the contact exists
        req.setEndpoint('https://api.brevo.com/v3/contacts/' + email);
        req.setMethod('GET');
        req.setHeader('Content-Type', 'application/json');
        req.setHeader('api-key', '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');
        
        try {
            HttpResponse res = http.send(req);
            if (res.getStatusCode() == 200) {
                // contact exists, sending a DELETE request to delete the contact
                req.setMethod('DELETE');
                HttpResponse deleteRes = http.send(req);
                if (deleteRes.getStatusCode() == 204) {
                    System.debug('Record successfully deleted from Brevo with status code: ' + deleteRes.getStatusCode());
                    
                } else {
                    System.debug('Failed to delete contact in Brevo with status code: ' + deleteRes.getStatusCode());
                }
            }
        } catch(Exception ex) {
            System.debug('API call failed with message: ' + ex.getMessage());
        }
    }
  
}