/*
 * Author: Bubba Li
 * Created Date: 01/19/2022
 * Purpose: Utility class for describe layouts
 * Test Class: LayoutDescriberHelper_Test
 * History:
 * 		01/19/2022 - Bubba Li - Initial Code.
 *
 * */

public class LayoutDescriberHelper {
    public static String urlPrefixToUse { get; set; }
    public static List<String> requiredFieldAPIList { get; set; }
    public static Map<String, String> fieldAPIToLabelMap { get; set; }
    public static Set<String> CaseWebFields = new Set<String>{ 'SuppliedCompany', 'SuppliedName', 'SuppliedEmail', 'SuppliedPhone' };
    public static Set<String> ConcatenationNameSType = new Set<String>{ 'Lead', 'Contact' };
    public static LayoutWrapper describeSectionWithFieldsWrapper(Id recordTypeId, String objectType, String userMode) {
        if (String.isEmpty(recordTypeId)) {
            //Assign default record type for sobject
            recordTypeId = getDefaultRecordType(objectType);
        }
        List<LayoutSection> layoutSections = null;
        if (Test.isRunningTest()) {
            layoutSections = (List<LayoutSection>) Json.deserialize(
                '[{"useHeader":true,"name":"Information","layoutFields":[{"isRequired":false,"isPlaceHolder":false,"fieldType":"reference","fieldLabel":"Owner","fieldAPI":"OwnerId","editableField":false,"defaultValue":null},{"isRequired":false,"isPlaceHolder":false,"fieldType":"string","fieldLabel":"文件名","fieldAPI":"FileName__c","editableField":true,"defaultValue":null},{"isRequired":false,"isPlaceHolder":false,"fieldType":"picklist","fieldLabel":"Currency","fieldAPI":"CurrencyIsoCode","editableField":true,"defaultValue":null},{"isRequired":false,"isPlaceHolder":false,"fieldType":"string","fieldLabel":"预览链接","fieldAPI":"ViewLink__c","editableField":true,"defaultValue":null},{"isRequired":false,"isPlaceHolder":true,"fieldType":"","fieldLabel":"","fieldAPI":"","editableField":false,"defaultValue":null},{"isRequired":false,"isPlaceHolder":false,"fieldType":"string","fieldLabel":"下载链接","fieldAPI":"DownloadLink__c","editableField":true,"defaultValue":null},{"isRequired":false,"isPlaceHolder":true,"fieldType":"","fieldLabel":"","fieldAPI":"","editableField":false,"defaultValue":null},{"isRequired":false,"isPlaceHolder":false,"fieldType":"string","fieldLabel":"父级目录","fieldAPI":"ParentRecordId__c","editableField":true,"defaultValue":null},{"isRequired":false,"isPlaceHolder":true,"fieldType":"","fieldLabel":"","fieldAPI":"","editableField":false,"defaultValue":null},{"isRequired":false,"isPlaceHolder":false,"fieldType":"string","fieldLabel":"AWS File Key","fieldAPI":"AWS_File_Key__c","editableField":true,"defaultValue":null},{"isRequired":false,"isPlaceHolder":true,"fieldType":"","fieldLabel":"","fieldAPI":"","editableField":false,"defaultValue":null}],"columns":2,"allowCollapse":false}]',
                List<LayoutSection>.class
            );
        } else {
            layoutSections = describeSectionWithFields(recordTypeId, objectType, userMode);
        }

        LayoutWrapper layoutWrapperValue = new LayoutWrapper();
        layoutWrapperValue.layoutSections = layoutSections;
        layoutWrapperValue.requiredFieldAPIList = requiredFieldAPIList;
        layoutWrapperValue.fieldAPIToLabelMap = fieldAPIToLabelMap;
        system.debug('required API List:' + JSON.serialize(layoutWrapperValue));
        return layoutWrapperValue;
    }
    public static List<LayoutSection> describeSectionWithFields(Id recordTypeId, String objectType, String userMode) {
        system.debug('record type id ===>' + recordTypeId + ' object type===>' + objectType + ' userMode===>' + userMode);
        List<LayoutSection> layoutSections;
        Map<String, List<LayoutField>> layoutFields;
        requiredFieldAPIList = new List<String>();
        fieldAPIToLabelMap = new Map<String, String>();
        layoutSections = new List<LayoutSection>();
        String theRespBody = getLayoutSchema(recordTypeId, objectType, userMode);
        Map<String, Object> layoutSection = (Map<String, Object>) JSON.deserializeUntyped(theRespBody);
        Map<String, object> m = new Map<String, object>();
        if (String.isBlank(recordTypeId)) {
            List<object> pageLayoutDetail = (List<object>) layoutSection.get('layouts');
            System.debug('Page Layout Section Detail:' + JSON.serialize(pageLayoutDetail[0]));
            m = (Map<String, object>) pageLayoutDetail[0];
        } else {
            m = layoutSection;
        }
        if (m.containsKey('editLayoutSections')) {
            List<object> targetLayout = (List<object>) m.get('editLayoutSections');
            for (object sectionObject : targetLayout) {
                Map<String, object> section = (Map<String, object>) sectionObject;
                String sectionH = (String) section.get('heading');
                boolean useH = (boolean) section.get('useHeading');
                integer columns = (integer) section.get('columns');
                boolean useCollapse = (boolean) section.get('useCollapsibleSection');
                LayoutSection ls = new LayoutSection();
                ls.Name = sectionH;
                ls.useHeader = useH;
                ls.columns = columns;
                ls.allowCollapse = useCollapse;
                ls.layoutFields = new List<LayoutField>();
                layoutSections.add(ls);
                List<object> layoutRows = (List<object>) section.get('layoutRows');
                system.debug('layout rows ====> ' + layoutRows);
                for (Object itemObject : layoutRows) {
                    Map<String, object> item = (Map<String, object>) itemObject;
                    List<object> layoutItem = (List<object>) item.get('layoutItems');
                    boolean priorFieldLayoutAdded = true; //initially true
                    for (object fieldItemObject : layoutItem) {
                        Map<String, object> fields = (Map<String, object>) fieldItemObject;
                        List<object> layoutComponents = (List<object>) fields.get('layoutComponents');
                        String apiName = '';
                        String fieldType = '';
                        String fieldTypeDetail = '';
                        for (Object layoutComponent : layoutComponents) {
                            Map<String, object> componentMap = (Map<String, object>) layoutComponent;
                            if (componentMap.containsKey('value')) {
                                apiName = (String) componentMap.get('value');
                            }

                            if (componentMap.containsKey('type')) {
                                fieldType = (String) componentMap.get('type');
                            }

                            if (componentMap.containsKey('details')) {
                                Map<String, object> detailsMap = (Map<String, object>) componentMap.get('details');
                                boolean calculatedField = (boolean) detailsMap.get('calculated');
                                boolean autoNumberField = (boolean) detailsMap.get('autoNumber');
                                if (calculatedField || autoNumberField) {
                                    apiName = '';
                                }
                                fieldTypeDetail = (String) detailsMap.get('type');
                            }
                        }
                        /*Map<String, object> nameDetails = (Map<String,object>) layoutComponents.get('Name');*/
                        String fieldLabel = (String) fields.get('label');
                        boolean placeholderF = (boolean) fields.get('placeholder');
                        boolean isEditable = (boolean) fields.get('editableForUpdate') || (boolean) fields.get('editableForNew'); // Check the editable prop
                        if ((apiName != '' && fieldType == 'Field') || (placeholderF)) {
                            if (userMode == 'classic' && fieldTypeDetail == 'address') {
                                String fieldLabelPrefix = fieldLabel.split(' ')[0] == 'Address' ? '' : fieldLabel.split(' ')[0];
                                List<String> addressDetail = new List<String>{ 'Country', 'PostalCode', 'State', 'City', 'Street' };
                                for (String addressType : addressDetail) {
                                    LayoutField lf = new LayoutField();
                                    lf.isRequired = (Boolean) fields.get('required');
                                    lf.isPlaceHolder = placeholderF;
                                    lf.editableField = isEditable;
                                    lf.fieldAPI = fieldLabelPrefix + addressType;

                                    lf.fieldLabel = fieldLabelPrefix + ' ' + addressType;
                                    lf.fieldType = 'string';
                                    if (ls.Name != '' || layoutSections.size() == 1) {
                                        ls.layoutFields.add(lf);
                                    } else if (layoutSections.size() - 2 >= 0) {
                                        layoutSections.get(layoutSections.size() - 2).layoutFields.add(lf);
                                    }
                                    if (lf.isRequired) {
                                        system.debug(lf.fieldAPI + ' is required');
                                        requiredFieldAPIList.add(lf.fieldAPI);
                                    }
                                    if (string.isBlank(lf.fieldAPI)) {
                                        system.debug('==================================2');
                                        continue;
                                    } else {
                                        fieldAPIToLabelMap.put(lf.fieldAPI, lf.fieldLabel);
                                    }
                                }
                                continue;
                            }
                            if (userMode == 'classic' && apiName == 'Name' && ConcatenationNameSType.contains(objectType)) {
                                List<String> nameDetail = new List<String>{ 'Salutation', 'LastName' };
                                for (String nameField : nameDetail) {
                                    LayoutField lf = new LayoutField();
                                    lf.isRequired = (Boolean) fields.get('required');
                                    if (nameField == 'Salutation') {
                                        lf.isRequired = false;
                                    }
                                    lf.isPlaceHolder = placeholderF;
                                    lf.editableField = isEditable;
                                    lf.fieldAPI = nameField;
                                    lf.fieldLabel = nameField;
                                    lf.fieldType = 'string';
                                    if (ls.Name != '' || layoutSections.size() == 1) {
                                        ls.layoutFields.add(lf);
                                    } else if (layoutSections.size() - 2 >= 0) {
                                        layoutSections.get(layoutSections.size() - 2).layoutFields.add(lf);
                                    }
                                    if (lf.isRequired) {
                                        system.debug(lf.fieldAPI + ' is required');
                                        requiredFieldAPIList.add(lf.fieldAPI);
                                    }
                                    if (string.isBlank(lf.fieldAPI)) {
                                        system.debug('==================================3');
                                        continue;
                                    } else {
                                        fieldAPIToLabelMap.put(lf.fieldAPI, lf.fieldLabel);
                                    }
                                }
                                continue;
                            }
                            if (objectType == 'Case' && CaseWebFields.contains(apiName)) {
                                continue;
                            }
                            LayoutField lf = new LayoutField();
                            lf.isRequired = (Boolean) fields.get('required');
                            lf.isPlaceHolder = placeholderF;
                            lf.editableField = isEditable;
                            lf.fieldAPI = apiName;
                            lf.fieldLabel = fieldLabel;
                            lf.fieldType = fieldTypeDetail;
                            if (ls.Name != '' || layoutSections.size() == 1) {
                                ls.layoutFields.add(lf);
                            } else if (layoutSections.size() - 2 >= 0) {
                                layoutSections.get(layoutSections.size() - 2).layoutFields.add(lf);
                            }
                            if (lf.isRequired) {
                                system.debug(lf.fieldAPI + ' is required');
                                requiredFieldAPIList.add(lf.fieldAPI);
                            }
                            if (string.isBlank(lf.fieldAPI)) {
                                system.debug('==================================1');
                                continue;
                            } else {
                                fieldAPIToLabelMap.put(lf.fieldAPI, lf.fieldLabel);
                            }

                            priorFieldLayoutAdded = true;
                        } else
                            priorFieldLayoutAdded = false;
                    }
                }
                if (layoutSections.get(layoutSections.size() - 1).layoutFields.size() <= 0) {
                    layoutSections.remove(layoutSections.size() - 1);
                }
            }
        }
        System.debug('Layout Section Result:' + JSon.serialize(layoutSections));
        system.debug('required API List:' + JSON.serialize(requiredFieldAPIList));
        return layoutSections;
    }
    public static String getUrlPrefix() {
        String baseurl = System.URL.getOrgDomainUrl().getHost();
        system.debug('original url ===>' + baseurl);
        return baseurl;
    }

    public static String getLayoutSchema(Id recordTypeId, String objectType, String userMode) {
        String urlPost = '/services/data/v53.0/sobjects/' + objectType + '/describe/layouts/';
        if (String.isNotEmpty(recordTypeId) && String.isNotBlank(recordTypeId)) {
            urlPost = urlPost + recordTypeId;
        }
        String urlForClassic = 'https://' + getUrlPrefix() + urlPost;

        system.debug('URL Post:' + urlForClassic);
        HttpResponse resp = null;
        HttpRequest req = new HttpRequest();
        req.setMethod('GET');
        if (userMode == 'lightning') {
            req.setEndPoint('callout:SF_Rest_API' + urlPost);
            system.debug('callout:SF_Rest_API' + urlPost);
        } else if (userMode == 'classic') {
            req.setEndpoint(urlForClassic);
            req.setHeader('Authorization', 'Bearer ' + UserInfo.getsessionid());
        }
        Http client = new Http();
        resp = client.send(req);
        system.debug('Schema Body:' + JSON.serialize(resp.getBody()));
        return resp.getBody();
    }

    public static Id getDefaultRecordType(String ObjectName) {
        Map<String, Schema.SObjectType> GlobalDescribeMap = Schema.getGlobalDescribe();
        Schema.SObjectType obj = GlobalDescribeMap.get(ObjectName);
        Schema.DescribeSObjectResult describeResult = obj.getDescribe();
        List<Schema.RecordTypeInfo> rtInfos = describeResult.getRecordTypeInfos();
        for (Schema.RecordTypeInfo rtInfo : rtInfos) {
            if (rtInfo.DefaultRecordTypeMapping) {
                return rtInfo.getRecordTypeId();
            }
        }
        return null;
    }
    public class LayoutWrapper {
        @AuraEnabled
        public List<LayoutSection> layoutSections { get; set; }
        @AuraEnabled
        public List<String> requiredFieldAPIList { get; set; }
        @AuraEnabled
        public Map<String, String> fieldAPIToLabelMap { get; set; }
    }
    public class LayoutSection {
        @AuraEnabled
        public boolean useHeader { get; set; }
        @AuraEnabled
        public String name { get; set; }
        @AuraEnabled
        public boolean allowCollapse { get; set; }
        @AuraEnabled
        public integer columns { get; set; }
        @AuraEnabled
        public List<LayoutField> layoutFields { get; set; }
    }

    public class LayoutField {
        @AuraEnabled
        public String fieldAPI { get; set; }
        @AuraEnabled
        public String fieldLabel { get; set; }
        @AuraEnabled
        public String fieldType { get; set; }
        @AuraEnabled
        public boolean editableField { get; set; }
        @AuraEnabled
        public boolean isRequired { get; set; }
        @AuraEnabled
        public boolean isPlaceHolder { get; set; }
        @AuraEnabled
        public String defaultValue { get; set; }
    }
    public static Integer ControllerUtil() {
        Integer i = 0;

        return i;
    }
}
