Return type 4 sequence data

lib/www/server/lib/db/sequence/get.js

@@ -15,11 +15,50 @@ async function getSummary (projectId, sequence, opts = {}) {
 	return res.rows[0];
 }
 
+async function getPoints (projectId, sequence, opts = {}) {
+
+	const offset = Math.abs(opts.offset) || Math.abs((opts.page-1)*opts.itemsPerPage) || 0;
+	const limit = Math.abs(opts.limit) || Math.abs(Number(opts.itemsPerPage)) || null;
+
+	const client = await setSurvey(projectId);
+
+	const restriction = sequence
+		? "sequence = $3"
+		: "TRUE OR $3";
+
+	const text = `
+		SELECT line, point, sequence, st_x(ST_Transform(geometry, 4326)) longitude, st_y(ST_Transform(geometry, 4326)) latitude
+		FROM final_shots
+		WHERE ${restriction}
+		ORDER BY sequence, point
+		OFFSET $1
+		LIMIT $2;
+	`;
+
+	try {
+		const res = await client.query({text, values: [offset, limit, sequence], rowMode: 'array'});
+		return res.rows;
+	} catch (err) {
+		console.error(err);
+		// throw { status: 500, message: "Internal error" };
+	} finally {
+		client.release();
+	}
+
+}
 
 async function get (projectId, sequence, opts = {}) {
 	if (opts.summary) {
 		return await getSummary(projectId, sequence, opts);
 	}
+	if (opts.type == 4) {
+		// The user is request that we send just the bare details:
+		// sequence, sailline, line, longitude, latitude.
+		//
+		// This will probably be a binary data request (though doesn't
+		// need to).
+		return await getPoints(projectId, sequence, opts);
+	}
 
 	const client = await setSurvey(projectId);