const express = require('express');
const router = new express.Router();
const path = require('path');
const db = require('../../../core/database');
const sqlPath = path.join(__dirname, 'sql');

module.exports = app => {
    router.get('/preview', async function(req, res, next) {
        try {
            const reqArgs = req.args;
            if (!reqArgs.invoiceId)
                throw new Error('The argument invoiceId is required');

            const invoiceId = reqArgs.invoiceId;
            const sales = await db.rawSqlFromDef(`${sqlPath}/sales`, [invoiceId]);
            const content = app.toCSV(sales);
            const fileName = `invoice_${invoiceId}.csv`;

            res.setHeader('Content-type', 'application/json; charset=utf-8');
            res.setHeader('Content-Disposition', `inline; filename="${fileName}"`);
            res.end(content);
        } catch (error) {
            next(error);
        }
    });

    router.get('/download', async function(req, res, next) {
        try {
            const reqArgs = req.args;
            if (!reqArgs.invoiceId)
                throw new Error('The argument invoiceId is required');

            const invoiceId = reqArgs.invoiceId;
            const sales = await db.rawSqlFromDef(`${sqlPath}/sales`, [invoiceId]);
            const content = app.toCSV(sales);
            const fileName = `invoice_${invoiceId}.csv`;

            res.setHeader('Content-type', 'text/csv');
            res.setHeader('Content-Disposition', `inline; filename="${fileName}"`);
            res.end(content);
        } catch (error) {
            next(error);
        }
    });

    const Email = require('../../../core/email');
    router.get('/send', async function(req, res, next) {
        try {
            const reqArgs = req.args;
            if (!reqArgs.invoiceId)
                throw new Error('The argument invoiceId is required');

            const invoiceId = reqArgs.invoiceId;
            const invoice = await db.findOneFromDef(`${sqlPath}/invoice`, [invoiceId]);
            const sales = await db.rawSqlFromDef(`${sqlPath}/sales`, [invoiceId]);

            const args = Object.assign({
                invoiceId: (String(invoice.id)),
                recipientId: invoice.clientFk,
                recipient: invoice.recipient,
                replyTo: invoice.salesPersonEmail
            }, reqArgs);

            const content = app.toCSV(sales);
            const fileName = `invoice_${invoiceId}.csv`;
            const email = new Email('invoice', args);
            await email.send({
                overrideAttachments: true,
                attachments: [{
                    filename: fileName,
                    content: content
                }]
            });

            res.status(200).json({message: 'ok'});
        } catch (error) {
            next(error);
        }
    });

    return router;
};