import { VAModel, LoggedModel } from "../../../models/vaModel.js";

// Getting all active VA's and their details
async function va_callback(req, res) {
    try {
        // Find the latest log entry for each VA and return those whose last entry is LOGIN
        const agg = await LoggedModel.aggregate([
            { $sort: { time: -1 } },
            { $group: { _id: "$vaId", lastLog: { $first: "$$ROOT" } } },
            { $match: { "lastLog.loggedType": "LOGIN" } }
        ]);

        const vaIds = agg.map((a) => a._id).filter(Boolean);

        if (vaIds.length === 0) {
            return res.status(200).json({ success: true, count: 0, data: [] });
        }



        const vas = await VAModel.find({ _id: { $in: vaIds } }).lean().exec();

        // map lastLog by VA id for easy attachment
        const lastLogByVa = agg.reduce((acc, a) => {
            acc[String(a._id)] = a.lastLog;
            return acc;
        }, {});

        const results = vas.map((v) => ({ ...v, lastLog: lastLogByVa[String(v._id)] || null }));

        return res.status(200).json({ success: true, count: results.length, data: results });
    } catch (error) {
        return res.status(500).send("Internal Server Error");
    }
}

export { va_callback };