/**
    * ─────────────────────────────────────────────────────────────────────────────────────────────────┐
    * This Batch class is use for upsert Shopify's Smart collection into the Salesfroce  
    * Collection is group of products based on category 
    * Smart Collection is the collection of product which has set of rules/conditions 
    * Custom Collection is the collection of product which has not set of rules/conditions 
    * Collects all list of products which lies under the Collections 
    * 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 FetchCollects_Batch implements Database.Batchable<Object>,Database.AllowsCallouts,database.stateful {
    
    global string collectionId{get;set;}
    String linkForNextPage = '';
    Boolean isEnd = false;
    String JSONResponse = '';
    String store = 'Default';
    String updated_at_min = '';
    String updated_at_max = '';


    List<HIC_ShopifySync__HIC_Field_Mapping__c> collectionFieldsList;
    public List<HIC_ShopifySync__HIC_Configuration__c > configurationList = new List<HIC_ShopifySync__HIC_Configuration__c >();
    Boolean dontRun = false;
    
    global FetchCollects_Batch(string collectionId){
        this.collectionId = collectionId;  
        dontRun = true;      
    }

    global FetchCollects_Batch(String linkForNextPage , Boolean isEnd,String store){
        this.linkForNextPage = linkForNextPage;
        this.isEnd = isEnd;
        this.store = store;
    }
    global FetchCollects_Batch(String linkForNextPage , Boolean isEnd,String store, String updated_at_min, String updated_at_max){
        this.linkForNextPage = linkForNextPage;
        this.isEnd = isEnd;
        this.store = store;
        this.updated_at_min = updated_at_min;
        this.updated_at_max = updated_at_max;
    }

    global FetchCollects_Batch(integer noOfPages){
        System.debug('Deprecated'); 
    } 

    //Depreceated
    global FetchCollects_Batch(String linkForNextPage , Boolean isEnd){
        this.linkForNextPage = linkForNextPage;
        this.isEnd = isEnd;
    }

    global Iterable<Object> start(Database.BatchableContext bc){ 
        String collectsResponse = '';
        String queryConfiguration = 'Select '+CheckAccessibility.isAccessible('HIC_ShopifySync__Chunk_Size__c,name, 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(queryConfiguration);
        if(!Test.isRunningTest()){
                // Get Shopif's collects JSON Response 
                if(String.isNotBlank(linkForNextPage) && !isEnd){
                    JSONResponse = HIC_ShopifyUtility.fetchAllDataWithLinkForNextPage('collects.json?limit='+configurationList[0].HIC_ShopifySync__Chunk_Size__c+'&page_info='+linkForNextPage, configurationList);
                }else{
                    if(String.isNotBlank(collectionId)){
                        JSONResponse = HIC_ShopifyUtility.fetchAllDataWithLinkForNextPage('collects.json?collection_id='+collectionId+'&limit='+configurationList[0].HIC_ShopifySync__Chunk_Size__c,configurationList);
                        //JSONResponse = HIC_ShopifyUtility.fetchAllDataWithLinkForNextPage('/collections/' + collectionId + '/products.json?limit='  + configurationList[0].HIC_ShopifySync__Chunk_Size__c, configurationList );
                     }else if(updated_at_min!=''){
                        isEnd = true;
                     }else{
                        JSONResponse = HIC_ShopifyUtility.fetchAllDataWithLinkForNextPage('collects.json?limit='+configurationList[0].HIC_ShopifySync__Chunk_Size__c, 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)
                        collectsResponse = String.valueof(main.get('response'));
    
                        if(main.get('link') != null){
                            linkForNextPage =  String.valueof(main.get('link'));
                        }else{
                            isEnd = true;
                        }
                    }
                }
        }else{
            collectsResponse = ' {  "collects": [        {            "id": 10561557004352,            "collection_id": 98764324928,            "product_id": 2220823806016,            "featured": false,            "created_at": "2019-01-07T20:46:15-12:00",            "updated_at": "2019-01-07T20:46:15-12:00",            "position": 1,            "sort_value": "0000000001"        },        {            "id": 10629828771904,            "collection_id": 100793057344,            "product_id": 2220862111808,            "featured": false,            "created_at": "2019-01-09T22:52:37-12:00",            "updated_at": "2019-01-09T22:52:37-12:00",            "position": 2,            "sort_value": "0000000002"        },        {            "id": 10629828804672,            "collection_id": 100793057344,            "product_id": 2220823806016,            "featured": false,            "created_at": "2019-01-09T22:52:37-12:00",            "updated_at": "2019-01-09T22:52:37-12:00",            "position": 3,            "sort_value": "0000000003"        },        {            "id": 10662849839168,            "collection_id": 100793057344,            "product_id": 2298561232960,            "featured": false,            "created_at": "2019-01-11T03:37:20-12:00",            "updated_at": "2019-01-11T03:37:20-12:00",            "position": 3,            "sort_value": "0000000003"        },        {            "id": 10740677017664,            "collection_id": 100793057344,            "product_id": 2371482910784,            "featured": false,            "created_at": "2019-01-14T00:07:24-12:00",            "updated_at": "2019-01-14T00:07:24-12:00",            "position": 4,            "sort_value": "0000000004"        },        {            "id": 10740828831808,            "collection_id": 100793057344,            "product_id": 2371754065984,            "featured": false,            "created_at": "2019-01-14T00:21:21-12:00",            "updated_at": "2019-01-14T00:21:21-12:00",            "position": 5,            "sort_value": "0000000005"        },        {            "id": 10742718824512,            "collection_id": 100793057344,            "product_id": 2373655855168,            "featured": false,            "created_at": "2019-01-14T01:54:42-12:00",            "updated_at": "2019-01-14T01:54:42-12:00",            "position": 6,            "sort_value": "0000000006"        },        {            "id": 10745159221312,            "collection_id": 100793057344,            "product_id": 2375645200448,            "featured": false,            "created_at": "2019-01-14T03:53:08-12:00",            "updated_at": "2019-01-14T03:53:08-12:00",            "position": 7,            "sort_value": "0000000007"        }    ]}'  ;  
        }     
        
        if(!String.isNotBlank(collectsResponse)){
          List<Object> objectListEmpty = new List<Object>();
          return objectListEmpty ;
        } 
        
        collectionFieldsList = 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__Collect__c\' AND '+CheckAccessibility.isAccessible('HIC_ShopifySync__Store__c','HIC_ShopifySync__HIC_Field_Mapping__c')+' = \''+store+'\' LIMIT 49999' ;
        collectionFieldsList = database.query(query);
        Map<String, Object> meta = (Map<String, Object>) JSON.deserializeUntyped(collectsResponse);       
        List<Object> objectList = (List<Object>) meta.get('collects'); 
        
        return objectList; 
        
    }   
    
    global void execute(Database.BatchableContext BC, List<Object> Scope){
        //Process Field Mapping for Collects 
        System.debug('collect scope--'+Scope);
        
        Set<String> productIds = new Set<String>();
        for(Object pr : Scope){
            Map<String,Object> prdmap = (Map<String,Object>) pr;
            if(!prdmap.isEmpty()){
                if(prdmap.containsKey('product_id')) {
                    productIds.add(String.valueOf(prdmap.get('product_id')));
                }
            }
        }
        
        Map<String, String> productIdToNameMap = new Map<String, String>();
        if(!productIds.isEmpty()){
            for(Product2 prod : [SELECT HIC_ShopifySync__Shopify_Id__c, Name FROM Product2 WHERE HIC_ShopifySync__Shopify_Id__c IN :productIds]) {
                productIdToNameMap.put(prod.HIC_ShopifySync__Shopify_Id__c, prod.Name);
            }
        }
        
        for(Object pr : Scope){
            Map<String,Object> prdmap = (Map<String,Object>) pr;
            if(!prdmap.isEmpty() && prdmap != null){
                //prdmap.put('collection_id',collectionId);
                //prdmap.put('product_id',String.valueOf(prdmap.get('id')));
                prdmap.put('id',String.valueOf(prdmap.get('product_id'))+String.valueOf(prdmap.get('collection_id')));
                if(prdmap.containsKey('product_id') && productIdToNameMap.containsKey(String.valueOf(prdmap.get('product_id')))) {
                    prdmap.put('handle', productIdToNameMap.get(String.valueOf(prdmap.get('product_id'))));
                }
            }
        }
        if(!Test.isRunningTest()){
            HIC_ShopifyUtility.processSobjectList(collectionFieldsList,Scope,'HIC_ShopifySync__Collect__c','HIC_ShopifySync__Shopify_Id__c',configurationList,dontRun,store);
        }  
        
    }
    
    global void finish(Database.BatchableContext BC){
        List <HIC_ShopifySync__HIC_Configuration__c> configListToCheckObjects = new List <HIC_ShopifySync__HIC_Configuration__c>();
        String query = 'Select '+CheckAccessibility.isAccessible('id,HIC_ShopifySync__Default_Field_Mapping__c, HIC_ShopifySync__Draft_Order_Sync__c, HIC_ShopifySync__CollectionsBatchCompleted__c, HIC_ShopifySync__Collection_Sync__c,HIC_ShopifySync__IsCurrencyChanged__c,HIC_ShopifySync__Batch_Is_Processing__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__Inventory_Location__c, HIC_ShopifySync__Enable_Draft_Order__c, name, 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';
        configListToCheckObjects = database.query(query) ;
        
        if(!isEnd){
            //Call Batch again for next page (Pagination)
            if(!Test.isRunningTest()){
                FetchCollects_Batch callBatchAgain = new FetchCollects_Batch(linkForNextPage,false,store,updated_at_min,updated_at_max);
                Database.executeBatch(callBatchAgain,1);
            }
        // Call next batch for location and inventory level and inventory item 
        }else if(configListToCheckObjects[0].HIC_ShopifySync__Inventory_Location__c && !dontRun){
            HIC_ShopifyUtility.fetchLocations(configurationList,store,updated_at_min,updated_at_max);
            configListToCheckObjects[0].HIC_ShopifySync__CollectionsBatchCompleted__c = true;
        // Call next batch for Draft order  
        }else if(configListToCheckObjects[0].HIC_ShopifySync__Draft_Order_Sync__c && !dontRun){
            HIC_ShopifyUtility.fetchDraftOrders(configListToCheckObjects,store,updated_at_min,updated_at_max);
            configListToCheckObjects[0].HIC_ShopifySync__CollectionsBatchCompleted__c = true;
        //Update Configuraion for tack batch process in the page    
        }else if(!configListToCheckObjects[0].HIC_ShopifySync__Inventory_Location__c && !configListToCheckObjects[0].HIC_ShopifySync__Draft_Order_Sync__c && !dontRun){
            
            if(CheckAccessibility.isUpdateable('HIC_ShopifySync__IsCurrencyChanged__c,HIC_ShopifySync__Batch_Is_Processing__c','HIC_ShopifySync__HIC_Configuration__c') && Schema.sObjectType.HIC_ShopifySync__HIC_Configuration__c.fields.HIC_ShopifySync__Batch_Is_Processing__c.isUpdateable() && Schema.sObjectType.HIC_ShopifySync__HIC_Configuration__c.fields.HIC_ShopifySync__IsCurrencyChanged__c.isUpdateable()){
               configListToCheckObjects[0].HIC_ShopifySync__IsCurrencyChanged__c = false;
                configListToCheckObjects[0].HIC_ShopifySync__Batch_Is_Processing__c = false;
            } 
            configListToCheckObjects[0].HIC_ShopifySync__CollectionsBatchCompleted__c = true;
             
        }
        if(isEnd && CheckAccessibility.isUpsertable('id','HIC_ShopifySync__HIC_Configuration__c')  && CheckAccessibility.isUpdateable('id','HIC_ShopifySync__HIC_Configuration__c') && Schema.sObjectType.HIC_ShopifySync__HIC_Configuration__c.isUpdateable() ){
            if(!configListToCheckObjects.isempty() && configListToCheckObjects != null  ){
                update configListToCheckObjects;
                //Sent Email Notification
                if(configListToCheckObjects[0].HIC_ShopifySync__Inventory_Location__c == false){
                    EmailErrorCSV.SuccessMailSend(); 
                }
            } 
        }
    }
}