/**
    * ─────────────────────────────────────────────────────────────────────────────────────────────────┐
    * This Batch class is use for upsert Shopify's Produt and Variant into the Salesfroce   
    * 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>
    * ────────────────────────────────────────────────────────────────────────────────────────────────── 
    */
global with sharing class FetchLocations_Batch implements Database.Batchable<Object>,Database.AllowsCallouts, Database.Stateful{

    String store = 'Default';
    String linkForNextPage = '';
    Boolean isEnd = false;
    String updated_at_min = '';
    String updated_at_max = '';
    
    public List<HIC_ShopifySync__HIC_Configuration__c >  configurationList = new List<HIC_ShopifySync__HIC_Configuration__c >();
    
    global List<HIC_ShopifySync__Location__c> LocationListToupsert;
    
    global List<HIC_ShopifySync__Location__c> LocationListToPass;
    
    List<HIC_ShopifySync__HIC_Field_Mapping__c> locationFieldsList;
    
    integer noOfPages = 0;
    
    global FetchLocations_Batch(integer noOfPages,String Store){  
        this.noOfPages = noOfPages; 
        this.store = Store;
    }
    global FetchLocations_Batch(integer noOfPages,String Store, String updated_at_min, String updated_at_max){  
        this.noOfPages = noOfPages; 
        this.store = Store;
        this.updated_at_min = updated_at_min;
        this.updated_at_max = updated_at_max;
    }
    global FetchLocations_Batch(String linkForNextPage, String Store, String updated_at_min, String updated_at_max){  
        this.linkForNextPage = linkForNextPage; 
        this.store = Store;
        this.updated_at_min = updated_at_min;
        this.updated_at_max = updated_at_max;
    }
  
    //Deprecreated
    global FetchLocations_Batch(integer noOfPages){
        this.noOfPages = noOfPages; 
    }


    
    global Iterable<Object> start(Database.BatchableContext bc){
        String JSONResponse = '';

        if(updated_at_min != ''){
            //List<Object> emptyObjectList = new List <Object>();
            //return emptyObjectList;
            isEnd = true;
        }
        String query = 'Select '+CheckAccessibility.isAccessible('name, HIC_ShopifySync__Chunk_Size__c, HIC_ShopifySync__Default_Field_Mapping__c, HIC_ShopifySync__Shopify_URL__c,HIC_ShopifySync__Specify_Close_Date__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 49999';
        configurationList = database.query(query);
        
        LocationListToPass = new List <HIC_ShopifySync__Location__c>();
        
        string locationResponse = '';
        if(!Test.isRunningTest()){
            if(String.isNotBlank(linkForNextPage) && !isEnd){
                JSONResponse = HIC_ShopifyUtility.fetchAllDataWithLinkForNextPage('locations.json?limit='+configurationList[0].HIC_ShopifySync__Chunk_Size__c+'&page_info='+linkForNextPage, configurationList);
            }else{
                JSONResponse = HIC_ShopifyUtility.fetchAllDataWithLinkForNextPage('locations.json?limit='+configurationList[0].HIC_ShopifySync__Chunk_Size__c+'&status=any'+(updated_at_min!=''?'&updated_at_min='+updated_at_min:'')+(updated_at_max!=''?'&updated_at_max='+updated_at_max:''), configurationList);
            }
            if(String.isNotBlank(JSONResponse)){
                Map<String,Object> main = (Map<String,Object>) JSON.deserializeUntyped(JSONResponse);
                if(!main.isEmpty() && main.containskey('response') && main.containskey('link') ){
                    if( main.get('response') != null)
                    locationResponse = String.valueof(main.get('response'));

                    if(main.get('link') != null){
                        linkForNextPage =  String.valueof(main.get('link'));
                    }else{
                        isEnd = true;
                    }
                }
            }
            //locationResponse = hic_shopifyUtility.fetchAllDataUsingId('locations.json?page='+ noOfPages, configurationList);
        }
        else{
            locationResponse = '{ "locations": [ { "id": 23173333056, "name": "Address: A-45, Udhyog Marg, A Block, Sector 2, Noida, Uttar Pradesh 2013ujjawaligggffdgd", "address1": "Address: A-45, Udhyog Marg, A Block, Sector 2, Noida, Uttar Pradesh 201301", "address2": "56/37", "city": "Noida", "zip": "201301", "province": "Uttar Pradesh", "country": "IN", "phone": "8168642194", "created_at": "2019-01-07T20:19:16-12:00", "updated_at": "2019-01-11T03:02:28-12:00", "country_code": "IN", "country_name": "India", "province_code": "UP", "legacy": false, "active": true, "admin_graphql_api_id": "gid://shopify/Location/23173333056" }, { "id": 25860014144, "name": "Varanasi", "address1": "Varanasi", "address2": "Varanasi", "city": "Varanasi", "zip": "552525", "province": "Andaman and Nicobar", "country": "IN", "phone": "", "created_at": "2019-01-14T01:51:26-12:00", "updated_at": "2019-01-14T01:51:34-12:00", "country_code": "IN", "country_name": "India", "province_code": "AN", "legacy": false, "active": true, "admin_graphql_api_id": "gid://shopify/Location/25860014144" } ] }';
        }
        
        Map<String, Object> meta = (Map<String, Object>) JSON.deserializeUntyped(locationResponse);
        List<Object> listoflocation = new List<Object>();
        if(meta.containsKey('locations') && meta.get('locations') != null)
            listoflocation = (List<Object>) meta.get('locations');
        return listoflocation;
    }
    global void execute(Database.BatchableContext bc , List<Object> scope){
        
        HIC_ShopifySync__location__c location = new HIC_ShopifySync__location__c();
        
        locationFieldsList = new list<HIC_ShopifySync__HIC_Field_Mapping__c>();
        String query = 'Select '+CheckAccessibility.isAccessible('HIC_ShopifySync__SF_Field__c, HIC_ShopifySync__Shopify_Fields__c, HIC_ShopifySync__Nested__c , HIC_ShopifySync__IsSFID__c, HIC_ShopifySync__Default_Value__c ','HIC_ShopifySync__HIC_Field_Mapping__c')+' from HIC_ShopifySync__HIC_Field_Mapping__c Where '+CheckAccessibility.isAccessible('HIC_ShopifySync__Object_Name__c','HIC_ShopifySync__HIC_Field_Mapping__c')+' = \'HIC_ShopifySync__Location__c\' AND '+CheckAccessibility.isAccessible('HIC_ShopifySync__Store__c','HIC_ShopifySync__HIC_Field_Mapping__c')+' = \''+store+'\' LIMIT 49999';
        locationFieldsList = database.query(query);
       
        if(!locationFieldsList.isEmpty() && !scope.isEmpty()){
            LocationListToupsert = hic_shopifyUtility.fillObjectValues(locationFieldsList,'HIC_ShopifySync__Location__c',scope, configurationList);
            for(HIC_ShopifySync__Location__c locatn : LocationListToupsert){
                locatn.HIC_ShopifySync__is_processed__c = false;
                locatn.HIC_ShopifySync__Store__c = store;
            }
        }
        
        
        try{
            if(LocationListToupsert.Isempty()) return;
            Schema.SObjectType objectType = Schema.getGlobalDescribe().get('HIC_ShopifySync__Location__c');
            Map<String, SObjectField> fieldMap = objectType.getDescribe().fields.getMap();
            Schema.SobjectField theField = fieldMap.get('HIC_ShopifySync__Shopify_Id__c');
            
            LocationListToPass.addAll(LocationListToupsert);
            if(CheckAccessibility.isUpsertable('HIC_ShopifySync__SF_Field__c, HIC_ShopifySync__Shopify_Fields__c, HIC_ShopifySync__Nested__c , HIC_ShopifySync__IsSFID__c, HIC_ShopifySync__Default_Value__c ','HIC_ShopifySync__HIC_Field_Mapping__c') ) 
             EmailErrorCSV.makeCsvAndSendInEmail(JSON.serialize(scope),'HIC_ShopifySync__Location__c',LocationListToupsert,theField,false,store); 
        }catch(Exception e){
             
        }
    }
    global void finish(Database.BatchableContext bc){

        /*if(noOfPages > 1){
            integer revisedNoOfPages = noOfPages - 1;
            FetchLocations_Batch callBatchAgain = new FetchLocations_Batch(revisedNoOfPages,store,updated_at_min,updated_at_max);
            if(!Test.isRunningTest()){
                Database.executeBatch(callBatchAgain,1);
            }
        }*/
        if(!isEnd){ 
            if(!Test.isRunningTest()){
                //Call again for next pege (Pagination)
                FetchLocations_Batch callBatchAgain = new FetchLocations_Batch(linkForNextPage,store,updated_at_min,updated_at_max);
                Database.executeBatch(callBatchAgain,1);
            }
        }else{
            FetchInventoryLevels FetchInventoryLevels = new FetchInventoryLevels('',false,store,updated_at_min,updated_at_max); 
            if(!Test.isRunningTest()){
              Database.executeBatch(FetchInventoryLevels,1); 
            }
        }
    }
}