const db = require('vn-print/core/database');
const Email = require('vn-print/core/email');

module.exports = async function(request, response, next) {
    try {
        const reqArgs = request.body;

        if (!reqArgs.clientIds)
            throw new Error('The argument clientIds is required');
        if (!reqArgs.from)
            throw new Error('The argument from is required');
        if (!reqArgs.to)
            throw new Error('The argument to is required');

        response.status(200).json({
            message: 'Success'
        });

        const clientIds = reqArgs.clientIds;

        const clients = await db.rawSql(`
        SELECT
                c.id,
                c.email,
                eu.email salesPersonEmail
            FROM client c
                JOIN account.emailUser eu ON eu.userFk = c.salesPersonFk
                JOIN ticket t ON t.clientFk = c.id
                JOIN sale s ON s.ticketFk = t.id
                JOIN item i ON i.id = s.itemFk
                JOIN itemType it ON it.id = i.typeFk
            WHERE c.id IN(?) 
                AND it.isPackaging = FALSE
                AND DATE(t.shipped) BETWEEN ? AND ?
            GROUP BY c.id`, [clientIds, reqArgs.from, reqArgs.to]);

        const clientData = new Map();
        for (const client of clients)
            clientData.set(client.id, client);

        for (const clientId of reqArgs.clientIds) {
            const client = clientData.get(clientId);

            if (client) {
                const args = Object.assign({
                    recipientId: clientId,
                    recipient: client.email,
                    replyTo: client.salesPersonEmail
                }, response.locals);

                const email = new Email('campaign-metrics', args);
                await email.send();
            }
        }
    } catch (error) {
        next(error);
    }
};