Add in date routes

server/fetch-events-for-timestamp.js

@@ -1,6 +1,8 @@
 const assert = require('assert');
-const path = require('path');
 const fetch = require('node-fetch');
+
+const urlJoin = require('./lib/url-join');
+
 const { matrixServerUrl } = require('../config.json');
 const secrets = require('../secrets.json');
 
@@ -10,7 +12,7 @@ assert(matrixAccessToken);
 class HTTPResponseError extends Error {
   constructor(response, responseText, ...args) {
     super(
-      `HTTP Error Response: ${response.status} ${response.statusText}: ${responseText}\n\tURL=${response.url}`,
+      `HTTP Error Response: ${response.status} ${response.statusText}: ${responseText}\n    URL=${response.url}`,
       ...args
     );
     this.response = response;
@@ -40,7 +42,10 @@ async function fetchEndpoint(endpoint) {
 }
 
 async function fetchEventsForTimestamp(roomId, ts) {
-  const timestampToEventEndpoint = path.join(
+  assert(roomId);
+  assert(ts);
+
+  const timestampToEventEndpoint = urlJoin(
     matrixServerUrl,
     `_matrix/client/unstable/org.matrix.msc3030/rooms/${roomId}/timestamp_to_event?ts=${ts}&dir=f`
   );
@@ -50,14 +55,14 @@ async function fetchEventsForTimestamp(roomId, ts) {
   const eventIdForTimestamp = timestampToEventResData.event_id;
   assert(eventIdForTimestamp);
 
-  const contextEndpoint = path.join(
+  const contextEndpoint = urlJoin(
     matrixServerUrl,
     `_matrix/client/r0/rooms/${roomId}/context/${eventIdForTimestamp}?limit=0`
   );
   const contextResData = await fetchEndpoint(contextEndpoint);
   //console.log('contextResData', contextResData);
 
-  const messagesEndpoint = path.join(
+  const messagesEndpoint = urlJoin(
     matrixServerUrl,
     `_matrix/client/r0/rooms/${roomId}/messages?from=${contextResData.start}&limit=50&filter={"lazy_load_members":true,"include_redundant_members":true}`
   );

server/lib/url-join.js

@@ -0,0 +1,9 @@
+const path = require('path');
+
+// via https://javascript.plainenglish.io/how-to-safely-concatenate-url-with-node-js-f6527b623d5
+function urlJoin(baseUrl, ...pathParts) {
+  const fullUrl = new URL(path.join(...pathParts), baseUrl).toString();
+  return fullUrl;
+}
+
+module.exports = urlJoin;

server/server1.js

@@ -1,9 +1,15 @@
+const assert = require('assert');
 const express = require('express');
-const asyncHandler = require('./express-async-handler');
+const asyncHandler = require('./lib/express-async-handler');
+const urlJoin = require('./lib/url-join');
 
 const fetchEventsForTimestamp = require('./fetch-events-for-timestamp');
 const renderHydrogenToString = require('./render-hydrogen-to-string');
 
+const config = require('../config.json');
+const basePath = config.basePath;
+assert(basePath);
+
 const app = express();
 
 app.get('/style.css', async function (req, res) {
@@ -12,20 +18,75 @@ app.get('/style.css', async function (req, res) {
 });
 
 app.get(
-  '/',
+  '/:roomIdOrAlias/event/:eventId',
   asyncHandler(async function (req, res) {
-    const { events, stateEventMap } = await fetchEventsForTimestamp(
-      '!HBehERstyQBxyJDLfR:my.synapse.server',
-      new Date('2022-02-08').getTime()
-    );
+    res.send('todo');
+  })
+);
+
+app.get(
+  '/:roomIdOrAlias/date/:yyyy(\\d{4})/:mm(\\d{2})/:dd(\\d{2})/:hourRange(\\d\\d?-\\d\\d?)?',
+  asyncHandler(async function (req, res) {
+    const roomIdOrAlias = req.params.roomIdOrAlias;
+    assert(roomIdOrAlias.startsWith('!') || roomIdOrAlias.startsWith('#'));
+
+    const yyyy = parseInt(req.params.yyyy, 10);
+    // Month is the only zero-based index in this group
+    const mm = parseInt(req.params.mm, 10) - 1;
+    const dd = parseInt(req.params.dd, 10);
+
+    const hourRange = req.params.hourRange;
+
+    let fromHour = 0;
+    let toHour = 0;
+    if (hourRange) {
+      const hourMatches = hourRange.match(/^(\d\d?)-(\d\d?)$/);
+
+      if (!hourMatches) {
+        throw new StatusError(404, 'Hour was unable to be parsed');
+      }
+
+      fromHour = parseInt(hourMatches[1], 10);
+      toHour = parseInt(hourMatches[2], 10);
+
+      if (Number.isNaN(fromHour) || fromHour < 0 || fromHour > 23) {
+        throw new StatusError(404, 'From hour can only be in range 0-23');
+      }
+
+      // Currently we force the range to always be 1 hour
+      // If the format isn't correct, redirect to the correct hour range
+      if (toHour !== fromHour + 1) {
+        res.redirect(
+          urlJoin(
+            basePath,
+            roomIdOrAlias,
+            'date',
+            req.params.yyyy,
+            req.params.mm,
+            req.params.dd,
+            `${fromHour}-${fromHour + 1}`
+          )
+        );
+        return;
+      }
+    }
+
+    const fromTimestamp = Date.UTC(yyyy, mm, dd, fromHour);
+    let toTimestamp = Date.UTC(yyyy, mm, dd + 1, fromHour);
+    if (hourRange) {
+      toTimestamp = Date.UTC(yyyy, mm, dd, toHour);
+    }
+
+    const { events, stateEventMap } = await fetchEventsForTimestamp(roomIdOrAlias, fromTimestamp);
 
     const hydrogenHtmlOutput = await renderHydrogenToString(events, stateEventMap);
 
+    const styleUrl = urlJoin(basePath, 'style.css');
     const pageHtml = `
     <!doctype html>
     <html lang="en">
       <head>
-      <link href="style.css" rel="stylesheet">
+      <link href="${styleUrl}" rel="stylesheet">
       </head>
       <body>
         ${hydrogenHtmlOutput}