public with sharing class DropboxAuth extends BaseStorageAuth {
    // private static string key = 'qxsicm15oenit6d'; // '67sl43yt0yda2nh';
    // private static string secert = 'oarcqrgoap4hbbz'; // 'm55vqsl1ejr20rs';
    // private static string redirectUri = 'https://login.salesforce.com/apex/HIC_FilesME__CompleteAuthPage';
    // private static string authUrl='https://www.dropbox.com/oauth2/authorize';
    // private static string scope='account_info.read%20account_info.write';
    // private static string tokenUrl='https://api.dropbox.com/oauth2/token';

    static String PROVIDER_TYPE = 'Dropbox';
    
    // @AuraEnabled
    // public static String createAuthURL(String externalStorage) {
    //     String key = EncodingUtil.urlEncode(key,'UTF-8');
    //     String uri = EncodingUtil.urlEncode(redirect_uri,'UTF-8');
    //     String authuri = '';
    //     authuri = authUrl+'?'+
    //         'client_id='+key+
    //         '&response_type=code'+
    //         '&scope='+scope+
    //         '&redirect_uri='+uri+
    //         '&access_type=offline';
    //     return authuri;
    // }
    
    public override void getAccessToken(String code,String Storage,boolean isAdminCred,String userId){
        try {
            
            StorageProviderConfigUtil.Config config = StorageProviderConfigUtil.getConfig(PROVIDER_TYPE);
            
            String redirectUri = config.redirectUri;
            boolean isProduction = OauthTokenManager.orgSandBoxOrProduction();
                    if(!isProduction){
                        redirectUri = redirectUri.replace('login.salesforce.com', 'test.salesforce.com');
                    }

            String messageBody = 
                'code=' + EncodingUtil.urlEncode(code, 'UTF-8') +
                '&client_id=' + EncodingUtil.urlEncode(config.clientId, 'UTF-8') +
                '&client_secret=' + EncodingUtil.urlEncode(config.clientSecret, 'UTF-8') +
                '&redirect_uri=' + EncodingUtil.urlEncode(redirectUri, 'UTF-8') +
                '&grant_type=authorization_code' +
                '&token_access_type=offline';

            HttpRequest req = new HttpRequest();
            req.setMethod('POST');
            req.setEndpoint(config.tokenEndpoint);
            req.setHeader('content-type', 'application/x-www-form-urlencoded');
            req.setBody(messageBody);
            req.setTimeout(60*1000);
            
            Http callout = new Http();
            String responseText;
            HttpResponse response = callout.send(req);
            if(response.getStatusCode() == 200){
                responseText = response.getBody();
                Map<String,object> responseMap =(Map<String,object>)JSON.deserializeUntyped(responseText) ; 
                System.debug('responseMap>>>:'+JSON.serializePretty(responseMap)); 
               

                String accessToken = (String) responseMap.get('access_token');
                String refreshToken = (String) responseMap.get('refresh_token');

                String connectedUsername = fetchUserInfo(accessToken);

                Map<String,object> tokenMapToUpsertInSalesforce = New Map<string,object> () ; 
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__Auth_Provider_Name__c','Dropbox');
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__Connected_Username__c',connectedUsername);
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__Provider__c',Storage);
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__Refresh_Token__c',refreshToken);
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__Access_Token__c',accessToken);
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__User__c',userId);
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__Is_Admin_level_Credentials__c',isAdminCred);
                tokenMapToUpsertInSalesforce.put('HIC_FilesME__API_Endpoint_URL__c',config.tokenEndpoint);

                System.debug('Storing token for Dropbox');
                OAuthTokenManager.storeToken(tokenMapToUpsertInSalesforce);
            }
        }
        catch (Exception e) {
            FME_Logger.error('Error getting access token: ' + e.getMessage(),'DropboxAuth','getAccessToken'); 
        }
        
    }

    public override String refreshAccessToken(String refreshToken){
        try {
            StorageProviderConfigUtil.Config config = StorageProviderConfigUtil.getConfig(PROVIDER_TYPE);
            
            String body = 'grant_type=refresh_token' +
            '&refresh_token=' + EncodingUtil.urlEncode(refreshToken, 'UTF-8') +
            '&client_id=' + EncodingUtil.urlEncode(config.clientId, 'UTF-8') +
            '&client_secret=' + EncodingUtil.urlEncode(config.clientSecret, 'UTF-8');
            
            Http http = new Http();
            HttpRequest req = new HttpRequest();
            req.setEndpoint(config.tokenEndpoint);
            req.setMethod('POST');
            req.setHeader('Content-Type', 'application/x-www-form-urlencoded');
            req.setBody(body);
    
            HttpResponse res = http.send(req);
            if (res.getStatusCode() == 200) {
                Map<String, Object> responseMap = (Map<String, Object>) JSON.deserializeUntyped(res.getBody());
                System.debug('responseMap>>>:' + JSON.serializePretty(responseMap));
                String accessToken = String.valueOf(responseMap.get('access_token'));
                System.debug('accessToken>>>:' + JSON.serializePretty(accessToken));
                return accessToken;
            } else {
                System.debug('Failed to refresh token. Response: ' + res.getBody());
                return null;
            }
        } catch (Exception e) {
            System.debug('Exception while refreshing access token: ' + e.getMessage());
            return null;
        }
    }

    // Call Dropbox UserInfo API to fetch connected username/email
    private static String fetchUserInfo(String accessToken){
        try {
            HttpRequest req = new HttpRequest();
            req.setEndpoint('https://api.dropboxapi.com/2/users/get_current_account');
            req.setMethod('POST');
            req.setHeader('Authorization', 'Bearer ' + accessToken);

            Http http = new Http();
            HttpResponse res = http.send(req);

            if(res.getStatusCode() == 200){
                Map<String, Object> response1 = (Map<String, Object>) JSON.deserializeUntyped(res.getBody());
                    
                System.debug('>>>>>response1='+response1);
                Map<String, Object> nameObject = (Map<String, Object>) response1.get('name');
                System.debug('Name object: '+ nameObject);
                String userName = (String) nameObject.get('display_name');
                String email = (String) response1.get('email'); 
                
                System.debug('User Email: ' + email);
                System.debug('User Display Name: ' + userName);
                return String.isNotBlank(userName) ? userName : email;
            } 
            else {
                System.debug('Failed to fetch Dropbox user info: ' + res.getBody());
                return null;
            }
        } catch (Exception e){
            FME_Logger.error('Error fetching user info: ' + e.getMessage(),'DropboxAuth','fetchUserInfo'); 
            return null;
        }
    }

    // @AuraEnabled
    // public static Map<String,Object> revokeAccessToken(String accessToken){
    //     Map<String,Object> revokeMap=new Map<String,Object>();
    //     try {
    //             String revokeUrl = 'https://api.dropbox.com/oauth2/revoke';
    //             // Create an HTTP request
    //             HttpRequest req = new HttpRequest();
    //             req.setEndpoint(revokeUrl);
    //             req.setMethod('POST');
                
    //             // Set the body with parameters
    //             String body = 'token=' + EncodingUtil.urlEncode(accessToken, 'UTF-8') + 
    //                           '&client_id=' + EncodingUtil.urlEncode(config.clientId, 'UTF-8') + 
    //                           '&client_secret=' + EncodingUtil.urlEncode(config.clientSecret, 'UTF-8');
                
    //             req.setBody(body);
    //             req.setHeader('Content-Type', 'application/x-www-form-urlencoded');
                
    //             // Create an HTTP object to send the request
    //             Http http = new Http();
    //             HttpResponse res = http.send(req);
    //             System.debug('Response Body: ' + res.getBody());
    //             // Check the response status
    //             if (res.getStatusCode() == 200) {
    //                 System.debug('Token revoked successfully');
    //                 revokeMap.put('message','Token revoked successfully');
    //                 revokeMap.put('state', (Object)'success');
    //                 revokeMap.put('code' , (Object)200);
    //             } else {
    //                 System.debug('Failed to revoke token. Status: ' + res.getStatusCode() + ' Response: ' + res.getBody());
    //                 revokeMap.put('message','Failed to revoke token');
    //                 revokeMap.put('state', (Object)'Failed');
    //                 revokeMap.put('code' , (Object)500);
    //             }
    //         // }
    //     } catch (Exception e) {
    //         revokeMap.put('message','error Occured');
    //         revokeMap.put('state', (Object)'Error');
    //         revokeMap.put('code' , (Object)401);
    //         System.debug('>>>Error message='+e.getMessage());
    //         throw new AuraHandledException(e.getMessage());
            
    //     }
    //     return revokeMap;
    // }

    // public static boolean OrgSandBoxOrProduction(){
    //     boolean isProduction;
    //     try {
    //        List<Organization> orgRecord= [SELECT Id,TrialExpirationDate,IsSandbox,Name  from Organization ];
    //        System.debug('>>>>>orgRecord'+orgRecord);
    //        if(orgRecord[0].IsSandbox==false){
    //            isProduction=true;
    //        }
    //        else{
    //            isProduction=false;
    //         }
    //         System.debug('>>>>isProduction'+isProduction);
    //     } catch (Exception e) {
    //         throw new AuraHandledException(e.getMessage());
    //     }
    //     return isProduction;
    // }

    
}