'use strict';

const flutterwave = require('flutterwave-node-v3');
const request = require('request');
const db = require('../app/db')
const logger = require('../app/logger');

// https://developer.flutterwave.com/reference/create-a-transfer
const flutterwaveConfigBuffer = new Buffer(process.env.FLUTTERWAVE_API, 'base64');
const flutterwaveConfig = JSON.parse(flutterwaveConfigBuffer.toString('ascii'));
/*
curl -X POST http://localhost:9086/verify \
   -H 'Content-Type: application/json' \
   -d '{"account_bank":"044","account_number":"0690000032"}'
*/
var account = {
    verify: function(req, res, next) {
        const flw = new flutterwave(flutterwaveConfig.PublicKey, flutterwaveConfig.SecretKey);
        const details = {
            account_number: req.body.account_number,
            account_bank: req.body.account_bank
        };
        logger.info(details);

        /*
         CREATE TABLE flutterwave_account_cache (
          id bigserial,
          account_bank VARCHAR(3) NOT NULL,
          account_number VARCHAR(20) NOT NULL,
          response json,
          created timestamp DEFAULT NOW(),
          PRIMARY KEY(id)
         );
        */
        // Save request in the DB
        var queryText = 'INSERT INTO flutterwave_account_cache(account_bank, account_number) VALUES($1, $2) RETURNING id'
        db.query(queryText, [req.body.account_bank, req.body.account_number], function(dbErr, result) {
            if (dbErr) {
                logger.info('Failed to save request in the DB for account_bank = %s, account_number=%s', req.body.account_bank, req.body.account_number);                
                logger.info(dbErr);
                res.send({
                    status: "failure", 
                    message: "Failed to save request in the DB!", 
                    details: dbErr.message,
                    code: null,
                    data: details
                });
            } else {
                var flutterwave_cache_id = result.rows[0].id;
                logger.info('Request saved int the DB for flutterwave_account_cache_id =', flutterwave_cache_id);
                logger.info(result.rows);
                // https://developer.flutterwave.com/docs/verifications/bank-account/
                flw.Misc.verify_Account(details)
                .then(response => {
                        //res.json(response);
                        /*
                        {
                            "status": "success",
                            "message": "Account details fetched",
                            "data": {
                                "account_number": "0690000032",
                                "account_name": "Pastor Bright"
                            }
                        }
                        */
                        logger.info('-------------------------------');
                        logger.info(response.data);
                        logger.info('-------------------------------');
                        var json = {
                            status: response.status,
                            statusText: response.message,
                            data: response.data
                        };
                        queryText = 'UPDATE flutterwave_account_cache SET response=$1 WHERE id=$2';
                        db.query(queryText, [json, flutterwave_cache_id], function(dbErr, result) {
                            if (dbErr) {
                                logger.info('Failed to save response in the DB for flutterwave_account_cache_id =', flutterwave_cache_id);
                                logger.info(dbErr);
                            } else {
                                logger.info('Response saved int the DB for flutterwave_account_cache_id =', flutterwave_cache_id);
                                logger.info('Updated row count:', result.rowCount);
                            }
                        });
                        res.json(json);
                    })
                    .catch(err => {
                        /*
                        {
                        "status": "error",
                        "message": "Sorry, that account number is invalid, please check and try again",
                        "data": null
                        }
                        */
                        logger.error(err.message);
                        //logger.error(err.stack);
                        //logger.error(err.response.data);
                        //logger.error(err.response.headers);
                        queryText = 'UPDATE flutterwave_account_cache SET response=$1 WHERE id=$2';
                        db.query(queryText, [err, flutterwave_cache_id], function(dbErr, result) {
                            if (dbErr) {
                                logger.info('Failed to save error response in the DB for flutterwave_account_cache_id =', flutterwave_cache_id);
                                logger.info(dbErr);
                            } else {
                                logger.info('Error response saved int the DB for flutterwave_account_cache_id =', flutterwave_cache_id);
                                logger.info('Updated row count:', result.rowCount);
                            }
                        });
                        res.send({
                            status: "failure", 
                            message: "Invalid response", 
                            details: err.message,
                            code: typeof err.response !== 'undefined' ? err.response.status : null,
                            data: typeof err.response !== 'undefined' ? err.response.data : null
                        });
                    });
            }
        });
        // Check DB time stamp (integrity check)
        db.query('SELECT NOW()', (err, res) => {
            if (err) {
                throw err;
            }
            logger.info('time:', res.rows[0])
        });
    },
};

module.exports = account;