/**
* ─────────────────────────────────────────────────────────────────────────────────────────────────┐
* This Utility class is use for create and delete Webhook into the Shopify platform.
* We use rest callout for create and delete webhooks into the Shopify platform. 
* Shopify API Documentation: https://shopify.dev/docs/admin-api/rest/reference
* Create Shopify Store: https://www.shopify.com/signup?itcat=identity&itterm=create-new-store
* Shopify API Release 2020: https://www.shopify.in/partners/blog/shopify-api-release-january-2020
* What is Person Account in Salesforce ? https://help.salesforce.com/articleView?id=account_person.htm&type=5
* ──────────────────────────────────────────────────────────────────────────────────────────────────
* @author         Sumit    <sumit@hicShopify.com>
* ────────────────────────────────────────────────────────────────────────────────────────────────── 
*/ 
public with sharing class HICWebhookUtility {
    
    //Providing Username and Password
    public static string USER_NAME;
    public static string PASSWORD;
    //Provide URL of the Shopify store to HTTP requests
    public static string shopifyUrl;
     
    public static List<HIC_ShopifySync__HIC_Configuration__c >  configurationList = new List<HIC_ShopifySync__HIC_Configuration__c >();
    
    public HICWebhookUtility(String store){
        String query = 'Select '+CheckAccessibility.isAccessible('name, HIC_ShopifySync__Shopify_URL__c, HIC_ShopifySync__API_Key__c, HIC_ShopifySync__Private_Key_Password__c, HIC_ShopifySync__Opportunity__c, HIC_ShopifySync__Order__c, HIC_ShopifySync__Opportunity_Line_Item__c, HIC_ShopifySync__Order_Line_Item__c, HIC_ShopifySync__Order_Fulfillment__c, HIC_ShopifySync__Person_Account__c ','HIC_ShopifySync__HIC_Configuration__c')+' from HIC_ShopifySync__HIC_Configuration__c where '+CheckAccessibility.isAccessible('HIC_ShopifySync__Store__c', 'HIC_ShopifySync__HIC_Configuration__c')+' = \''+store+'\' LIMIT 1';
        configurationList = Database.query(query);
        if(!configurationList.isEmpty()){
            USER_NAME = configurationList[0].HIC_ShopifySync__API_Key__c;
            PASSWORD = configurationList[0].HIC_ShopifySync__Private_Key_Password__c;
            shopifyUrl = configurationList[0].HIC_ShopifySync__Shopify_URL__c;
        }
    }
    
    public HICWebhookUtility(List<HIC_ShopifySync__HIC_Configuration__c> configList){
        //String query = 'Select '+CheckAccessibility.isAccessible('name, HIC_ShopifySync__Shopify_URL__c, HIC_ShopifySync__API_Key__c, HIC_ShopifySync__Private_Key_Password__c, HIC_ShopifySync__Opportunity__c, HIC_ShopifySync__Order__c, HIC_ShopifySync__Opportunity_Line_Item__c, HIC_ShopifySync__Order_Line_Item__c, HIC_ShopifySync__Order_Fulfillment__c, HIC_ShopifySync__Person_Account__c ','HIC_ShopifySync__HIC_Configuration__c')+' from HIC_ShopifySync__HIC_Configuration__c where '+CheckAccessibility.isAccessible('HIC_ShopifySync__Store__c', 'HIC_ShopifySync__HIC_Configuration__c')+' = \''+store+'\' LIMIT 1';
        configurationList = configList;
        if(!configurationList.isEmpty()){
            USER_NAME = configurationList[0].HIC_ShopifySync__API_Key__c;
            PASSWORD = configurationList[0].HIC_ShopifySync__Private_Key_Password__c;
            shopifyUrl = configurationList[0].HIC_ShopifySync__Shopify_URL__c;
        }
    }

    @future(callout=true)
    public static void deleteWebhook(string objectName, string forDML, string store){
        List<HIC_ShopifySync__HIC_Webhook__c> webhookList = new list<HIC_ShopifySync__HIC_Webhook__c>();
        String trimmedObjectName = objectName.Trim();
        // String query = 'Select '+CheckAccessibility.isAccessible('HIC_ShopifySync__Shopify_Object__c,HIC_ShopifySync__DML_Type__c,HIC_ShopifySync__SF_URL_Mapping__c, HIC_ShopifySync__Topic__c, HIC_ShopifySync__Webhook_Id__c ','HIC_ShopifySync__Webhook__c')+ ' from HIC_ShopifySync__Webhook__c where '+CheckAccessibility.isAccessible('HIC_ShopifySync__Shopify_Object__c','HIC_ShopifySync__Webhook__c')+' = \''+trimmedObjectName+'\' AND '+CheckAccessibility.isAccessible('HIC_ShopifySync__DML_Type__c','HIC_ShopifySync__Webhook__c')+' = \''+forDML+'\' LIMIT 500';
        // webhookList = database.query(query);
        webhookList = [Select HIC_ShopifySync__Shopify_Object__c,HIC_ShopifySync__DML_Type__c,HIC_ShopifySync__Metafields_Namespace__c,HIC_ShopifySync__SF_URL_Mapping__c, HIC_ShopifySync__Topic__c, HIC_ShopifySync__Webhook_Id__c  from HIC_ShopifySync__HIC_Webhook__c where HIC_ShopifySync__Shopify_Object__c =: trimmedObjectName AND HIC_ShopifySync__DML_Type__c =: forDML and HIC_ShopifySync__Store__c =: store LIMIT 500];
        if(webhookList.isEmpty()) return;
        if(webhookList[0].HIC_ShopifySync__Webhook_Id__c != '' && webhookList[0].HIC_ShopifySync__Webhook_Id__c != null){
            string webhookURL = 'webhooks/'+webhookList[0].HIC_ShopifySync__Webhook_Id__c;
            map<string,string> responseMap = processRequest(webhookURL,'DELETE','',store);
            if(responseMap.containsKey('Ok')){
                webhookList[0].HIC_ShopifySync__Webhook_Id__c = null;
                try{
                    Update webhookList[0];
                }catch(Exception e){
                    system.debug('***Error in--'+e.getMessage());
                }
            }
        }else{
            list<HIC_ShopifySync__HIC_Configuration__c> configList  = new list<HIC_ShopifySync__HIC_Configuration__c>();
            // String Configquery = 'Select '+CheckAccessibility.isAccessible('id,HIC_ShopifySync__Salesforce_Site_URL__c,HIC_ShopifySync__Order_Sync__c,HIC_ShopifySync__Draft_Order_Sync__c,HIC_ShopifySync__Product_Sync__c,HIC_ShopifySync__Inventory_Location_Sync__c,HIC_ShopifySync__Customer_Sync__c,HIC_ShopifySync__Collection_Sync__c,name,HIC_ShopifySync__Default_Field_Mapping__c,HIC_ShopifySync__Batch_Is_Processing__c,HIC_ShopifySync__Specify_Close_Date__c, HIC_ShopifySync__Account_Contact__c, HIC_ShopifySync__Person_Account__c, HIC_ShopifySync__Default_Account__c, HIC_ShopifySync__Shopify_URL__c, HIC_ShopifySync__API_Key__c, HIC_ShopifySync__Private_Key_Password__c, HIC_ShopifySync__Opportunity__c, HIC_ShopifySync__Order__c, HIC_ShopifySync__Opportunity_Line_Item__c, HIC_ShopifySync__Order_Line_Item__c, HIC_ShopifySync__Order_Fulfillment__c','HIC_ShopifySync__Configuration__c')+'  from  HIC_ShopifySync__Configuration__c where '+CheckAccessibility.isAccessible('name','HIC_ShopifySync__Configuration__c')+' = \'Default\' LIMIT 1';
            // configList = database.query(Configquery);
            configList = [Select id,HIC_ShopifySync__Salesforce_Site_URL__c,HIC_ShopifySync__Order_Sync__c,HIC_ShopifySync__Draft_Order_Sync__c,HIC_ShopifySync__Product_Sync__c,HIC_ShopifySync__Inventory_Location_Sync__c,HIC_ShopifySync__Customer_Sync__c,HIC_ShopifySync__Collection_Sync__c,name,HIC_ShopifySync__Default_Field_Mapping__c,HIC_ShopifySync__Batch_Is_Processing__c,HIC_ShopifySync__Specify_Close_Date__c, HIC_ShopifySync__Account_Contact__c, HIC_ShopifySync__Person_Account__c, HIC_ShopifySync__Default_Account__c, HIC_ShopifySync__Shopify_URL__c, HIC_ShopifySync__API_Key__c, HIC_ShopifySync__Private_Key_Password__c, HIC_ShopifySync__Opportunity__c, HIC_ShopifySync__Order__c, HIC_ShopifySync__Opportunity_Line_Item__c, HIC_ShopifySync__Order_Line_Item__c, HIC_ShopifySync__Order_Fulfillment__c  from  HIC_ShopifySync__HIC_Configuration__c where HIC_ShopifySync__Store__c =: store LIMIT 1];
            if(configList.isEmpty()) return;
            System.debug('CheckingWebhookExist Called');
            CheckingWebhookExist(webhookList[0].HIC_ShopifySync__Topic__c,configList[0].HIC_ShopifySync__Salesforce_Site_URL__c, webhookList[0].HIC_ShopifySync__SF_URL_Mapping__c,configList,webhookList,store);
        }

    }


    public static void CheckingWebhookExist(String topic,String SiteUrl,String returnClassUrl,list<HIC_ShopifySync__HIC_Configuration__c> configList,List<HIC_ShopifySync__HIC_Webhook__c> webhookList, String store){
        String hiturl = 'webhooks.json?topic='+topic+'&address='+SiteUrl+'/services/apexrest/HIC_ShopifySync/'+returnClassUrl+'?objectname='+webhookList[0].HIC_ShopifySync__Shopify_Object__c+'%26DMLType='+webhookList[0].HIC_ShopifySync__DML_Type__c+'%26store='+store; 
          String WebhookExistResponse ; 
        if(!Test.isRunningTest()){
             WebhookExistResponse = HIC_ShopifyUtility.fetchAllDataUsingId(hiturl,configList); 
        }else{
            WebhookExistResponse = '{ "webhooks": [{ "id": 515347349585, "address": "https://hic-sf-shopify-developer-edition.ap15.force.com/services/apexrest/HIC_ShopifySync/UpdateCollectionAndCollectAuthentication", "topic": "collections/update", "created_at": "2019-09-14T12:43:21+05:30", "updated_at": "2019-09-14T12:43:21+05:30", "format": "json", "fields": [], "metafield_namespaces": [], "api_version": "2019-07" }] }';
        }
        
        if(WebhookExistResponse != null && WebhookExistResponse !=''){
            map<string,object> main =  ( map<string,object>)Json.deserializeUntyped(WebhookExistResponse);
            list<Object> listofExistingWebhook  =(List<Object>) main.get('webhooks');
            for(Object webobj: listofExistingWebhook){
                Map<string,object> singlewebhook = (Map<string,object>) webobj;
                if(singlewebhook.containsKey('id')){
                    String webhookURL = 'webhooks/'+String.valueof(singlewebhook.get('id'));
                    map<string,string> responseMap = processRequest(webhookURL,'DELETE','',store);
                    if(responseMap.containsKey('Ok')){
                      system.debug('Done');
                    }
                    
                }
            }
        }
    }


    public static map<string,string> processRequest(string objectType, string method, string body, string store){
        
        new HICWebhookUtility(store);
        
        Http h = new Http();
        HttpRequest req = new HttpRequest();
        string ResponseBody;
        map<string,string> statusVsBodyMap = new map<string,string>();
        string endPointValue = shopifyUrl + '/admin/'+objectType+'.json';
        req.setEndpoint(endPointValue);
        //Adding certificate to HTTP Requests
        req.setClientCertificateName('Shopify');
        /*Blob headerValue = Blob.valueOf(USER_NAME + ':' + PASSWORD);
        String authorizationHeader = 'Basic ' +
            EncodingUtil.base64Encode(headerValue);
        req.setHeader('Authorization', authorizationHeader);*/
        req.setHeader('X-Shopify-Access-Token', PASSWORD);
        req.setHeader('content-type', 'application/json');
        //Use get Method as we are retrieving data from shopify
        req.setMethod(method);
        req.setTimeout(120000);
        if(method == 'POST'){
            req.setBody(body);
        }
        try {
            HttpResponse res = h.send(req);
            ResponseBody = res.getBody();
            System.debug('ResponseBody--' +ResponseBody);
            System.debug('res Status--' +res.getStatusCode());
            if(res.getStatusCode() == 200 || res.getStatusCode() == 201 || res.getStatusCode() == 204){
                statusVsBodyMap.put('Ok',ResponseBody);
                return statusVsBodyMap;
            }
        }catch(Exception e){
            if(ResponseBody == '' || ResponseBody == null){
                ResponseBody = e.getMessage();
            }
            System.debug('error --' +e.getMessage());
        }
        statusVsBodyMap.put('Error',ResponseBody);
        return statusVsBodyMap;
    }

    //Deprecated
    @future(callout=true)
    public static void deleteWebhook(string objectName, string forDML){}

    
    @future(callout=true)
    public static void deleteWebhook(string objectName, string forDML, string store, String config){
        List<HIC_ShopifySync__HIC_Configuration__c> configList = (List<HIC_ShopifySync__HIC_Configuration__c>)JSON.deserialize(config, List<HIC_ShopifySync__HIC_Configuration__c>.Class);
        List<HIC_ShopifySync__HIC_Webhook__c> webhookList = new list<HIC_ShopifySync__HIC_Webhook__c>();
        String trimmedObjectName = objectName.Trim();
        // String query = 'Select '+CheckAccessibility.isAccessible('HIC_ShopifySync__Shopify_Object__c,HIC_ShopifySync__DML_Type__c,HIC_ShopifySync__SF_URL_Mapping__c, HIC_ShopifySync__Topic__c, HIC_ShopifySync__Webhook_Id__c ','HIC_ShopifySync__Webhook__c')+ ' from HIC_ShopifySync__Webhook__c where '+CheckAccessibility.isAccessible('HIC_ShopifySync__Shopify_Object__c','HIC_ShopifySync__Webhook__c')+' = \''+trimmedObjectName+'\' AND '+CheckAccessibility.isAccessible('HIC_ShopifySync__DML_Type__c','HIC_ShopifySync__Webhook__c')+' = \''+forDML+'\' LIMIT 500';
        // webhookList = database.query(query);
        webhookList = [Select HIC_ShopifySync__Shopify_Object__c,HIC_ShopifySync__DML_Type__c,HIC_ShopifySync__SF_URL_Mapping__c,HIC_ShopifySync__Metafields_Namespace__c,HIC_ShopifySync__Topic__c, HIC_ShopifySync__Webhook_Id__c  from HIC_ShopifySync__HIC_Webhook__c where HIC_ShopifySync__Shopify_Object__c =: trimmedObjectName AND HIC_ShopifySync__DML_Type__c =: forDML and HIC_ShopifySync__Store__c =: store LIMIT 500];
        if(webhookList.isEmpty()) return;
        if(webhookList[0].HIC_ShopifySync__Webhook_Id__c != '' && webhookList[0].HIC_ShopifySync__Webhook_Id__c != null){
            string webhookURL = 'webhooks/'+webhookList[0].HIC_ShopifySync__Webhook_Id__c;
            map<string,string> responseMap = processRequest(webhookURL,'DELETE','',store, configList);
            if(responseMap.containsKey('Ok')){
                webhookList[0].HIC_ShopifySync__Webhook_Id__c = null;
                try{
                    Update webhookList[0];
                }catch(Exception e){
                    system.debug('***Error in--'+e.getMessage());
                }
            }
        }else{
            //configList  = new list<HIC_ShopifySync__HIC_Configuration__c>();
            // String Configquery = 'Select '+CheckAccessibility.isAccessible('id,HIC_ShopifySync__Salesforce_Site_URL__c,HIC_ShopifySync__Order_Sync__c,HIC_ShopifySync__Draft_Order_Sync__c,HIC_ShopifySync__Product_Sync__c,HIC_ShopifySync__Inventory_Location_Sync__c,HIC_ShopifySync__Customer_Sync__c,HIC_ShopifySync__Collection_Sync__c,name,HIC_ShopifySync__Default_Field_Mapping__c,HIC_ShopifySync__Batch_Is_Processing__c,HIC_ShopifySync__Specify_Close_Date__c, HIC_ShopifySync__Account_Contact__c, HIC_ShopifySync__Person_Account__c, HIC_ShopifySync__Default_Account__c, HIC_ShopifySync__Shopify_URL__c, HIC_ShopifySync__API_Key__c, HIC_ShopifySync__Private_Key_Password__c, HIC_ShopifySync__Opportunity__c, HIC_ShopifySync__Order__c, HIC_ShopifySync__Opportunity_Line_Item__c, HIC_ShopifySync__Order_Line_Item__c, HIC_ShopifySync__Order_Fulfillment__c','HIC_ShopifySync__Configuration__c')+'  from  HIC_ShopifySync__Configuration__c where '+CheckAccessibility.isAccessible('name','HIC_ShopifySync__Configuration__c')+' = \'Default\' LIMIT 1';
            // configList = database.query(Configquery);
            //configList = [Select id,HIC_ShopifySync__Salesforce_Site_URL__c,HIC_ShopifySync__Order_Sync__c,HIC_ShopifySync__Draft_Order_Sync__c,HIC_ShopifySync__Product_Sync__c,HIC_ShopifySync__Inventory_Location_Sync__c,HIC_ShopifySync__Customer_Sync__c,HIC_ShopifySync__Collection_Sync__c,name,HIC_ShopifySync__Default_Field_Mapping__c,HIC_ShopifySync__Batch_Is_Processing__c,HIC_ShopifySync__Specify_Close_Date__c, HIC_ShopifySync__Account_Contact__c, HIC_ShopifySync__Person_Account__c, HIC_ShopifySync__Default_Account__c, HIC_ShopifySync__Shopify_URL__c, HIC_ShopifySync__API_Key__c, HIC_ShopifySync__Private_Key_Password__c, HIC_ShopifySync__Opportunity__c, HIC_ShopifySync__Order__c, HIC_ShopifySync__Opportunity_Line_Item__c, HIC_ShopifySync__Order_Line_Item__c, HIC_ShopifySync__Order_Fulfillment__c  from  HIC_ShopifySync__HIC_Configuration__c where HIC_ShopifySync__Store__c =: store LIMIT 1];
            if(configList.isEmpty()) return;
            System.debug('CheckingWebhookExist Called');
            CheckingWebhookExist(webhookList[0].HIC_ShopifySync__Topic__c,configList[0].HIC_ShopifySync__Salesforce_Site_URL__c, webhookList[0].HIC_ShopifySync__SF_URL_Mapping__c,configList,webhookList,store);
        }

    }

    public static map<string,string> processRequest(string objectType, string method, string body, string store, List<HIC_ShopifySync__HIC_Configuration__c> configList){
        
        new HICWebhookUtility(configList);
        
        Http h = new Http();
        HttpRequest req = new HttpRequest();
        string ResponseBody;
        map<string,string> statusVsBodyMap = new map<string,string>();
        string endPointValue = shopifyUrl + '/admin/'+objectType+'.json';
        req.setEndpoint(endPointValue);
        //Adding certificate to HTTP Requests
        req.setClientCertificateName('Shopify');
        /*Blob headerValue = Blob.valueOf(USER_NAME + ':' + PASSWORD);
        String authorizationHeader = 'Basic ' +
            EncodingUtil.base64Encode(headerValue);
        req.setHeader('Authorization', authorizationHeader);*/
        req.setHeader('X-Shopify-Access-Token', PASSWORD);
        req.setHeader('content-type', 'application/json');
        //Use get Method as we are retrieving data from shopify
        req.setMethod(method);
        req.setTimeout(120000);
        if(method == 'POST'){
            req.setBody(body);
        }
        try {
            HttpResponse res = h.send(req);
            ResponseBody = res.getBody();
            System.debug('ResponseBody--' +ResponseBody);
            System.debug('res Status--' +res.getStatusCode());
            if(res.getStatusCode() == 200 || res.getStatusCode() == 201 || res.getStatusCode() == 204){
                statusVsBodyMap.put('Ok',ResponseBody);
                return statusVsBodyMap;
            }
        }catch(Exception e){
            if(ResponseBody == '' || ResponseBody == null){
                ResponseBody = e.getMessage();
            }
            System.debug('error --' +e.getMessage());
        }
        statusVsBodyMap.put('Error',ResponseBody);
        return statusVsBodyMap;
    }
}