const logger = require('../shared/logger/src/main.js');
const config = require('../shared/config/src/main.js')();
const fs = require('fs');

const fastify = require('fastify')({
    logger: config['server']['log']['print'] ? logger : false,
    ...(config['server']['ssl']['work']
        ? {
              https: {
                  key: fs.readFileSync(
                      config['server']['ssl']['private_key'],
                      'utf8',
                  ),
                  cert: fs.readFileSync(
                      config['server']['ssl']['cert'],
                      'utf8',
                  ),
              },
          }
        : false),
});

const rate = require('../shared/database/src/main.js');
const chart = require('../chart/chart.js');

fastify.get('/api/getRate/', async function (req, res) {
    const query = req.query;
    if (!query['from_currency'] || !query['conv_currency']) {
        return res.status(400).send({
            status: 400,
            message: 'The from_currency and conv_currency fields are required',
        });
    }

    if (query['date'])
        return rate.getDay(
            query['from_currency'],
            query['conv_currency'],
            query['date'],
        );
    else if (query['start_date'] && query['end_date'])
        return rate.getPeriod(
            query['from_currency'],
            query['conv_currency'],
            query['start_date'],
            query['end_date'],
        );
    else
        return res.status(400).send({
            status: 400,
            message:
                'The date or period field is incorrect. ' +
                "There must be fields 'date' or 'start_date' and 'end_date'. " +
                'Read more in the documentation',
        });
});

fastify.get('/api/getChart/', async function (req, res) {
    const query = req.query;
    if (!query['from_currency'] || !query['conv_currency']) {
        return res.status(400).send({
            status: 400,
            message: 'The from_currency and conv_currency fields are required',
        });
    }
    if (!query['start_date'] || !query['end_date'])
        return res.status(400).send({
            status: 400,
            message: 'start_date and end_date is required',
        });

    const charts = await chart.gen_chart(
        query['from_currency'],
        query['conv_currency'],
        query['start_date'],
        query['end_date'],
    );

    if (config['currency']['chart']['save'])
        chart.save_chart(
            charts,
            `${query['from_currency']} ${query['conv_currency']} ` +
                `(${query['start_date']} - ${query['end_date']}).png`,
        );

    return res.status(200).send({
        status: 200,
        message: charts,
    });
});

fastify.listen(
    {
        port: 3000,
        host: config['server']['host'] ? config['server']['host'] : 'localhost',
    },
    (err) => {
        if (err) {
            fastify.log.error(err);
            process.exit(1);
        }
    },
);