Add script to generate a sorted list of guests as CSV for seating chart

scripts/gen-seating.js

@@ -0,0 +1,86 @@
+#!/usr/bin/env node
+
+var csv  = require('csv'),
+    path = require('path'),
+
+    invs   = require('../lib/invitations'),
+    output = process.argv[2];
+
+if (output) {
+    output = path.resolve(output);
+} else {
+    console.error('No output path provided!');
+    process.exit(1);
+}
+
+console.log('Loading invitations from database...');
+invs.loadInvitations(function (err, invitations) {
+    if (err) { throw err; }
+
+    var guests = invitations.reduce(function (guests, invitation) {
+        // Exclude all non-RSVPd guests.
+        if (!invitation.rsvpd) {
+            return guests;
+        }
+
+        // Include if guests who RSVPd "Yes".
+        invitation.guests.forEach(function (guest) {
+            if (guest.is_attending) {
+                guests.push(guest);
+            }
+        });
+
+        return guests;
+    }, []);
+
+    // Sort guests by last name.
+    guests.sort(function (a, b) {
+        a = getSortableName(a);
+        b = getSortableName(b);
+
+        if (a > b) { return 1; }
+        if (a < b) { return -1; }
+        return 0;
+    });
+
+    writeCSV(guests.map(createSeat), output, function () {
+        console.log('Done!');
+        process.exit();
+    });
+});
+
+function getSortableName(guest) {
+    var nameParts = guest.name.trim().split(/\s+/),
+        firstName = nameParts.splice(0, 1)[0],
+        lastName  = nameParts.splice(-1, 1)[0];
+
+    // Check for suffix; e.g. "III".
+    if (/^(jr|jr\.|iii|iv|v)$/.test(lastName.toLowerCase())) {
+        lastName = nameParts.splice(-1, 1)[0] + ' ' + lastName;
+    }
+
+    nameParts.unshift(lastName, firstName);
+    return nameParts.join(' ');
+}
+
+function createSeat(guest) {
+    return {
+        name : guest.title.trim() + ' ' + guest.name.trim(),
+        meal : guest.meal,
+        table: null
+    };
+}
+
+function writeCSV(seats, output, callback) {
+    var options = {
+        columns: ['table', 'name', 'meal'],
+        header : true
+    };
+
+    console.log('Writing ' + seats.length + ' seats to CSV file: ' + output);
+
+    csv()
+        .from.array(seats)
+        .to.path(output, options)
+        .on('close', callback);
+}