module.exports = {}
const Discord = require('discord.js');
module.exports.definition = {
    name: 'export',
    description: 'Export glucose readings to a csv file',
    integration_types: [0, 1],
    contexts: [0, 1, 2],
    options: [
        {
            name: 'start_date',
            description: 'Start date for the export in format mm/dd/yyyy',
            type: 3, // STRING
            required: false
        },
        {
            name: 'end_date',
            description: 'End date for the export in format mm/dd/yyyy',
            type: 3, // STRING
            required: false
        }
    ],
}

module.exports.execute = async (interaction, client, db) => {
    const startDate = interaction.options.getString('start_date');
    const endDate = interaction.options.getString('end_date');

    if (!db) {
        return interaction.reply({ content: 'Database connection is not available.', ephemeral: true });
    }

    try {
        let query = `SELECT * FROM glucose_log WHERE user_id = ?`;
        const params = [interaction.user.id];

        if (startDate) {
            query += ` AND timestamp >= ?`;
            params.push(new Date(startDate).toISOString().slice(0, 19).replace('T', ' '));
        }
        if (endDate) {
            query += ` AND timestamp <= ?`;
            params.push(new Date(endDate).toISOString().slice(0, 19).replace('T', ' '));
        }
        db.all(query, params, (err, rows) => {
            if (err) {
                console.error('Database error:', err);
                return interaction.reply({ content: 'An error occurred while accessing the database.', ephemeral: true });
            }
            if (rows.length === 0) {
                return interaction.reply({ content: 'No glucose readings found for the specified date range.', ephemeral: true });
            }

            // Convert rows to CSV format
            const csvRows = rows.map(row => `${row.timestamp},${row.reading},${row.notes}`);
            const msg = rows.map(row => `**ID:** ${row.id}\n**Timestamp:** <t:${Math.floor(row.timestamp/1000)}>\n**Reading:** ${row.reading}\n**Notes:** ${row.notes || 'None'}`).join('\n');
            const csvContent = `Timestamp,Reading,Notes\n${csvRows.join('\n')}`;
            const csvBuffer = Buffer.from(csvContent, 'utf8');
            const attachment = new Discord.AttachmentBuilder(csvBuffer, { name: `glucose_readings.csv` });
            return interaction.reply({ content: msg, files: [attachment] });
        });
    } catch (error) {
        console.error('Error exporting glucose readings:', error);
        return interaction.reply({ content: 'An error occurred while exporting your glucose readings.', ephemeral: true });
    }
}