const { configuration } = require('../../../../lib/db');
const { transform, prepare } = require('../../../../lib/sse');
const render = require('../../../../lib/render');

// FIXME Refactor when able
const defaultTemplatePath = require('path').resolve(__dirname, "../../../../../../../etc/default/templates/sequence.html.njk");

const html = async function (req, res, next) {
	try {
		const query = req.query;
		query.sequence = req.params.sequence;
		const {events, sequences} = await prepare(req.params.project, query);
		const seis = transform(events, sequences, {projectId: req.params.project});
		const template = (await configuration.get(req.params.project, "sse/templates/0/template")) || defaultTemplatePath;
		console.log("TEMPLATE", template);
		
		const response = await render(seis, template);
		
		if ("download" in query || "d" in query) {
			const filename = `${req.params.project}-seq${query.sequence.padStart(3, "0")}.html`;
			res.set("Content-Disposition", `attachment; filename="${filename}"`);
		}
		res.status(200).send(response);
		next();
	} catch (err) {
		if (err.message.startsWith("template")) {
			next({message: err.message});
		} else {
			next(err);
		}
	}
};

module.exports = html;