Implement a yahrzeit calendar search by email feature

src/router.js

@@ -26,7 +26,7 @@ import {shabbatBrowse} from './shabbat-browse.js';
 import {shabbatJsLink} from './shabbat-link.js';
 import {shortUrlRedir} from './shortUrlRedir.js';
 import {yahrzeitApp} from './yahrzeit.js';
-import {yahrzeitEmailSub, yahrzeitEmailVerify} from './yahrzeit-email.js';
+import {yahrzeitEmailSub, yahrzeitEmailVerify, yahrzeitEmailSearch} from './yahrzeit-email.js';
 import {getZmanim} from './zmanim.js';
 import {hebrewDateCalc} from './calc.js';
 import {omerApp} from './omerApp.js';
@@ -136,6 +136,8 @@ export function wwwRouter() {
       return yahrzeitEmailSub(ctx);
     } else if (rpath.startsWith('/yahrzeit/verify')) {
       return yahrzeitEmailVerify(ctx);
+    } else if (rpath.startsWith('/yahrzeit/search')) {
+      return yahrzeitEmailSearch(ctx);
     } else if (rpath.startsWith('/yahrzeit')) {
       return yahrzeitApp(ctx);
     } else if (rpath.startsWith('/holidays/')) {

src/yahrzeit-email.js

@@ -3,6 +3,7 @@ import {getIpAddress} from './getIpAddress.js';
 import {validateEmail, mySendMail, getImgOpenHtml} from './emailCommon.js';
 import {getMaxYahrzeitId, summarizeAnniversaryTypes,
   getYahrzeitIds,
+  makeCalendarTitle,
   getYahrzeitDetailsFromDb, getYahrzeitDetailForId} from './yahrzeitCommon.js';
 import {ulid} from 'ulid';
 import {basename} from 'path';
@@ -103,6 +104,61 @@ function makeUlid(ctx) {
   return id;
 }
 
+export async function yahrzeitEmailSearch(ctx) {
+  ctx.set('Cache-Control', 'private, max-age=0');
+  const q = Object.assign({}, ctx.request.body || {}, ctx.request.query);
+  if (!validateEmail(q.em)) {
+    ctx.throw(400, `Invalid email address ${q.em}`);
+  }
+  q.em = q.em.toLowerCase();
+  const sql = `SELECT e.id, e.calendar_id, y.contents
+FROM yahrzeit_email e, yahrzeit y
+WHERE e.email_addr = ? AND e.sub_status = 'active'
+AND e.calendar_id = y.id`;
+  const results = await dbQuery(ctx, sql, [q.em]);
+  if (!results || !results[0]) {
+    ctx.status = 404;
+    return ctx.render('yahrzeit-search-notfound', {q});
+  }
+  const nonEmpty = results.filter((row) => getMaxYahrzeitId(row.contents) !== 0);
+  if (!nonEmpty.length) {
+    ctx.status = 404;
+    return ctx.render('yahrzeit-search-notfound', {q});
+  }
+  const ip = getIpAddress(ctx);
+  let html = `
+<div dir="ltr" style="font-size:18px;font-family:georgia,'times new roman',times,serif;">
+<div>Here are your current Yahrzeit + Anniversary Calendar email subscriptions
+from Hebcal.com.</div>
+<ul>
+`;
+  for (const row of nonEmpty) {
+    const title = makeCalendarTitle(row.contents, 100);
+    const url = `https://www.hebcal.com/yahrzeit/edit/${row.calendar_id}?${UTM_PARAM}`;
+    html += `<li><a href="${url}">${title}</a>\n`;
+  }
+  html += `</ul>
+${BLANK}
+<div style="font-size:16px">Kol Tuv,
+<br>Hebcal.com</div>
+${BLANK}
+<div style="font-size:11px;color:#999;font-family:arial,helvetica,sans-serif">
+<div>This email was sent to ${q.em} by <a href="https://www.hebcal.com/?${UTM_PARAM}">Hebcal.com</a>.
+Hebcal is a free Jewish calendar and holiday web site.</div>
+${BLANK}
+<div>[${ip}]</div>
+</div>
+</div>
+`;
+  const message = {
+    to: q.em,
+    subject: `View your Yahrzeit + Anniversary Calendar subscriptions`,
+    html: html,
+  };
+  await mySendMail(ctx, message);
+  return ctx.render('yahrzeit-search-found', {q, results: nonEmpty});
+}
+
 export async function yahrzeitEmailSub(ctx) {
   ctx.set('Cache-Control', 'private, max-age=0');
   const q = Object.assign({}, ctx.request.body || {}, ctx.request.query);

src/yahrzeit.js

@@ -12,6 +12,7 @@ import {getIpAddress} from './getIpAddress.js';
 import {ulid} from 'ulid';
 import {getMaxYahrzeitId, isNumKey, summarizeAnniversaryTypes,
   getAnniversaryTypes,
+  getCalendarNames, makeCalendarTitle,
   getYahrzeitDetailsFromDb, getYahrzeitDetailForId} from './yahrzeitCommon.js';
 import {makeLogInfo} from './logger.js';
 import {isDeepStrictEqual} from 'node:util';
@@ -503,35 +504,6 @@ export async function yahrzeitDownload(ctx) {
   }
 }
 
-/**
- * @param {any} query
- * @param {number} maxlen
- * @return {string}
- */
-function makeCalendarTitle(query, maxlen) {
-  const names = getCalendarNames(query);
-  const calendarType = summarizeAnniversaryTypes(query, true);
-  let title = calendarType;
-  if (names.length > 0) {
-    title += ': ' + names.join(', ');
-  }
-  if (title.length > maxlen) {
-    title = title.substring(0, maxlen - 3) + '...';
-  }
-  return title;
-}
-
-/**
- * @param {any} query
- * @return {string[]}
- */
-function getCalendarNames(query) {
-  return Object.entries(query)
-      .filter(([k, val]) => k[0] == 'n' && isNumKey(k))
-      .map((x) => x[1])
-      .filter((str) => str.length > 0);
-}
-
 /**
  * @return {number}
  */

src/yahrzeitCommon.js

@@ -196,3 +196,32 @@ function getDateForId(query, id) {
   const dd = query['d' + id];
   return {yy, mm, dd};
 }
+
+/**
+ * @param {any} query
+ * @return {string[]}
+ */
+export function getCalendarNames(query) {
+  return Object.entries(query)
+      .filter(([k, val]) => k[0] == 'n' && isNumKey(k))
+      .map((x) => x[1])
+      .filter((str) => str.length > 0);
+}
+
+/**
+ * @param {any} query
+ * @param {number} maxlen
+ * @return {string}
+ */
+export function makeCalendarTitle(query, maxlen) {
+  const names = getCalendarNames(query);
+  const calendarType = summarizeAnniversaryTypes(query, true);
+  let title = calendarType;
+  if (names.length > 0) {
+    title += ': ' + names.join(', ');
+  }
+  if (title.length > maxlen) {
+    title = title.substring(0, maxlen - 3) + '...';
+  }
+  return title;
+}

views/yahrzeit-calpicker.ejs

@@ -24,6 +24,17 @@ calendar feed to Apple, Google, Outlook, and more.</p>
 <li><a href="/yahrzeit/edit/<%=cal.id%>"><%=cal.title%></a>
 <% }); -%>
 </ol>
+<p class="lead">Or, search for an existing calendar by email address</p>
+<form action="/yahrzeit/search" method="post" class="row row-cols-lg-auto g-3 align-items-center mb-3">
+  <div class="col">
+    <label class="visually-hidden" for="em">Email address</label>
+    <input class="form-control" type="email" name="em" id="em" placeholder="[email protected]" value="" required>
+  </div>
+  <div class="col">
+    <button type="submit" class="btn btn-primary">Search</button>
+  </div>
+</form>
+
 <p class="lead">Or, create a new personal calendar</p>
 <p><a class="btn btn-primary" href="/yahrzeit/new">New calendar &raquo;</a></p>
 <p>Yahrzeit refers to the anniversary, according to the Hebrew calendar, of the

views/yahrzeit-search-found.ejs

@@ -0,0 +1,18 @@
+<%- await include('partials/header-and-navbar.ejs', {
+  title: 'Yahrzeit + Anniversary Calendar Subscription Search - Hebcal',
+}) -%>
+<div class="row mt-2">
+<div class="col">
+<div class="float-start">
+  <svg width="64" height="64" class="me-3 mb-2"><use xlink:href="<%=cspriteHref%>#couple"></use></svg>
+</div>
+<p class="clearfix lead">Search for an existing Yahrzeit + Anniversary Calendar by email address.</p>
+<div class="alert alert-success" role="alert">
+<svg class="icon me-2"><use xlink:href="<%=spriteHref%>#bs-check-large"></use></svg>
+<strong>Success!</strong> An email message has been sent to
+<strong><%= q.em %></strong> containing <%= results.length %> personal calendar link(s).
+<br>Click the link(s) within that message to view your personal calendars.
+</div><!-- .alert -->
+</div><!-- .col -->
+</div><!-- .row -->
+<%- await include('partials/footer.ejs') -%>

views/yahrzeit-search-notfound.ejs

@@ -0,0 +1,26 @@
+<%- await include('partials/header-and-navbar.ejs', {
+  title: 'Yahrzeit + Anniversary Calendar Subscription Search - Hebcal',
+}) -%>
+<div class="row mt-2">
+<div class="col">
+<div class="float-start">
+  <svg width="64" height="64" class="me-3 mb-2"><use xlink:href="<%=cspriteHref%>#couple"></use></svg>
+</div>
+<p class="clearfix lead">Search for an existing Yahrzeit + Anniversary Calendar by email address.</p>
+<div class="alert alert-warning" role="alert">
+Sorry, the email address <strong><%= q.em %></strong> is not
+subscribed to Yahrzeit + Anniversary Calendar annual email reminders.
+</div><!-- .alert -->
+<p class="mt-3">Try searching again for a different email address</p>
+<form action="/yahrzeit/search" method="post" class="row row-cols-lg-auto g-3 align-items-center mb-3">
+  <div class="col">
+    <label class="visually-hidden" for="em">Email address</label>
+    <input class="form-control" type="email" name="em" id="em" placeholder="[email protected]" value="" required>
+  </div>
+  <div class="col">
+    <button type="submit" class="btn btn-primary">Search</button>
+  </div>
+</form>
+</div><!-- .col -->
+</div><!-- .row -->
+<%- await include('partials/footer.ejs') -%>