v1.4.0: Social card previews, themed 502 page, QoL improvements, and misc fixes

CHANGELOG.md

@@ -5,6 +5,41 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.4.0] - 2026-02-26
+
+### Added
+
+#### Metadata ([#14](https://github.com/DeepanshKhurana/ode/issues/14))
+- Social card preview system with OG image generation using `satori` and `@resvg/resvg-js`.
+- Pre-rendered meta pages for bots (WhatsApp, LinkedIn, Twitter, Facebook, etc.) with full `og:*` and `twitter:*` tags. Note that the tags work according to bot lists and would not be readily available on an online checker. However, `curl`ing the bots with a `User-Agent` e.g. `curl -H "User-Agent: WhatsApp/2.0"...` can be a good way to test. This works across `nginx` as well as `Vercel`. Configurations for both are provided in the repository as `nginx/` and `vercel.json`.
+- Content-based meta descriptions: first 160 characters extracted from markdown content with formatting stripped.
+- Reader URL bot support: `/reader/:collection?piece=:slug` serves appropriate meta pages to bots. The page is selected to be the piece the reader is currently reading.
+- Custom `bodyOfWork.description` field in `config.yaml` for `body-of-work` page social preview.
+- `nginx` configuration templates in `nginx/` directory with setup instructions.
+- OG images generated at 1200x630px with theme-specific styling.
+
+#### 502 Error Page for `nginx` ([#19](https://github.com/DeepanshKhurana/ode/issues/19))
+- Themed 502 error page generation with customizable text via `config.yaml`'s `redeployPage` section.
+- The theme respects all settings e.g. `defaultMode`, `lowercase` and overrides enabled in `config.yaml`.
+- 502 page served from persistent host location (survives container restarts).
+- Configuration settings are available in the `nginx/` directory's base template.
+
+<img width="640" alt="Ode's 502 error page template" src="https://github.com/user-attachments/assets/fae3f129-bb98-40d5-ab1e-5c96e0a524cd" />
+
+_Here's what it looks like for my own site, fully customised. No more ugly 502 pages!_
+
+### Changed
+
+- Improved GitHub Actions deployment documentation in `WRITING.md` with SSH key setup guide. ([#18](https://github.com/DeepanshKhurana/ode/issues/18))
+
+### Fixed
+
+- Numeric values in `config.yaml` (e.g., `404`) now handled correctly. ([#17](https://github.com/DeepanshKhurana/ode/issues/17))
+
+### Removed
+
+- `react-helmet` dependency (using React 19 native meta tags).
+
 ## [1.2.9] - 2026-02-22
 
 ### Changed

README.md

@@ -132,9 +132,7 @@ https://github.com/DeepanshKhurana/ode/blob/46873b31df3d4b02bbb375d4389173a1b6ac
 
 #### nginx Configuration
 
-If you are like me, you probably have your own server where you will need to handle SPA routing. If you are using nginx, a template is already provided.
-
-https://github.com/DeepanshKhurana/ode/blob/81c9c2916c5fade480a017b277be7eb1dc799cb4/nginx-template#L1-L32
+If you are like me, you probably have your own server where you will need to handle SPA routing. If you are using nginx, configuration templates are provided in the [nginx/](https://github.com/DeepanshKhurana/ode/tree/main/nginx) directory.
 
 ### From WordPress
 

WRITING.md

@@ -75,12 +75,88 @@ The container will build and serve your site. Restart to rebuild after content c
 docker compose restart ode
 ```
 
-## 4. (Optional) Auto-Deploy Content via GitHub Actions
+## 4. GitHub Secrets (Required)
+
+### SSH Key Setup
+
+Generate an SSH key (ed25519 recommended):
+
+```bash
+ssh-keygen -t ed25519 -C "ode-deploy"
+```
+
+Press enter to accept defaults. When prompted for a passphrase, leave it empty for GitHub Actions.
+
+This creates:
+
+```
+~/.ssh/id_ed25519
+~/.ssh/id_ed25519.pub
+```
+
+### Add the Public Key to the Server
+
+Copy the public key:
+
+```bash
+cat ~/.ssh/id_ed25519.pub
+```
+
+SSH into your server:
+
+```bash
+ssh root@your-server-ip
+```
+
+On the server:
+
+```bash
+mkdir -p ~/.ssh
+chmod 700 ~/.ssh
+nano ~/.ssh/authorized_keys
+```
+
+Paste the public key on its own line, then:
+
+```bash
+chmod 600 ~/.ssh/authorized_keys
+```
+
+### Test the SSH Connection
+
+From your local machine:
+
+```bash
+ssh -i ~/.ssh/id_ed25519 root@your-server-ip
+```
+
+If this works without prompting for a password, SSH is configured correctly. Exit with `Ctrl + D`.
+
+### Add Secrets to GitHub
+
+In your content repo, go to **Settings → Secrets and variables → Actions** and add:
+
+| Secret | Description |
+|--------|-------------|
+| `SSH_HOST` | Server IP or domain |
+| `SSH_USER` | User with SSH + Docker access (e.g. `root`) |
+| `SSH_KEY` | Full private key contents (including `-----BEGIN/END-----` lines) |
+| `SSH_PORT` | SSH port (usually `22`) |
+
+For `SSH_KEY`, paste the entire private key including:
+
+```
+-----BEGIN OPENSSH PRIVATE KEY-----
+...
+-----END OPENSSH PRIVATE KEY-----
+```
+
+## 5. Auto-Deploy Content via GitHub Actions
 
 Add this file in your **content repo** at `.github/workflows/deploy.yml`:
 
 ```yaml
-name: Deploy Ode content
+name: Deploy content
 
 on:
   push:
@@ -90,34 +166,42 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
 
+    env:
+      PROJECT_NAME: your-project
+      APP_DIR: your-site
+      BACKUP_DIR: your-site.backup
+      SERVICE_NAME: ode
+      REPO_URL: git@github.com:YOUR_USER/YOUR_CONTENT_REPO.git
+
     steps:
-      - name: Update content on server
+      - name: Destructive deploy and restart Ode
         uses: appleboy/ssh-action@v1.0.3
         with:
           host: ${{ secrets.SSH_HOST }}
           username: ${{ secrets.SSH_USER }}
           key: ${{ secrets.SSH_KEY }}
-          port: ${{ secrets.SSH_PORT }}
+          envs: PROJECT_NAME,APP_DIR,BACKUP_DIR,SERVICE_NAME,REPO_URL
           script: |
-            cd /srv/my-ode-site
-            git pull
-            docker restart YOUR_CONTAINER_NAME
+            set -e
+            echo "⚠️  DESTRUCTIVE DEPLOY: /root/${APP_DIR} will be replaced (previous state kept at /root/${BACKUP_DIR})"
+            cd /root
+            if [ -d "${APP_DIR}" ]; then
+              rm -rf "${BACKUP_DIR}"
+              mv "${APP_DIR}" "${BACKUP_DIR}"
+            fi
+            git clone "${REPO_URL}" "${APP_DIR}"
+            cd "${APP_DIR}"
+            docker compose -p "${PROJECT_NAME}" up -d --force-recreate "${SERVICE_NAME}"
+            docker ps --format "table {{.Names}}\t{{.Status}}" | grep "${PROJECT_NAME}-${SERVICE_NAME}" || true
+            CONTAINER_NAME="${PROJECT_NAME}-${SERVICE_NAME}-1"
+            STATIC_DIR="/var/www/${PROJECT_NAME}-static"
+            [ ! -d "${STATIC_DIR}" ] && mkdir -p "${STATIC_DIR}"
+            sleep 5
+            docker cp "${CONTAINER_NAME}:/app/dist/generated/502.html" "${STATIC_DIR}/502.html" || echo "502 page copy skipped"
 ```
 
-## 5. GitHub Secrets (Required)
-
-Add these in your **content repo** under:
-
-**Settings → Secrets and variables → Actions**
-
-| Secret | Description |
-|--------|-------------|
-| `SSH_HOST` | Server IP or domain |
-| `SSH_USER` | User with SSH + Docker access |
-| `SSH_KEY` | Private SSH key |
-| `SSH_PORT` | SSH port (usually 22) |
-
-Ensure the *public* key is added to `~/.ssh/authorized_keys` on your server.
+> [!WARNING]
+> This workflow is destructive. On every push: the server directory is deleted, fresh-cloned, and only one backup is kept. Ensure all content lives in Git.
 
 ## 6. Alternative: Portainer Webhook
 

build/calculate-stats.ts

@@ -33,8 +33,8 @@ try {
   };
 
   fs.writeFileSync(statsJsonPath, JSON.stringify(stats, null, 2));
-  console.log(`Stats calculated: ${wordsCount.toLocaleString()} words across ${piecesCount} pieces`);
+  console.log(`[stats]: ${wordsCount.toLocaleString()} words across ${piecesCount} pieces`);
 } catch (error) {
-  console.error('Error calculating stats:', error);
+  console.error('[stats]: error calculating stats:', error);
   process.exit(1);
 }

build/defaults/config.yaml

@@ -38,4 +38,5 @@ reader:
 rss:
   piecesLimit: 10
 bodyOfWork:
-  order: descending
+  order: descending 
+  description: "A chronological archive of all writings, organized by month and year."

build/ensure-defaults.ts

@@ -12,23 +12,23 @@ const pagesDir = path.join(contentDir, 'pages');
 const generatedDir = path.join(publicDir, 'generated');
 const indexDir = path.join(generatedDir, 'index');
 
-console.log('\nChecking for missing content...\n');
+console.log('[defaults]: checking for missing content...');
 
 [contentDir, piecesDir, pagesDir, generatedDir, indexDir].forEach(dir => {
   if (!fs.existsSync(dir)) {
     fs.mkdirSync(dir, { recursive: true });
-    console.warn(`WARNING: Directory missing: ${path.basename(dir)}/ — created`);
+    console.warn(`[defaults]: directory missing: ${path.basename(dir)}/ — created`);
   }
 });
 
 if (!fs.existsSync(introPath)) {
-  console.warn('WARNING: intro.md missing — using default');
+  console.warn('[defaults]: intro.md missing — using default');
   const defaultIntro = fs.readFileSync(path.join(defaultsDir, 'intro.md'), 'utf-8');
   fs.writeFileSync(introPath, defaultIntro);
 }
 
 if (!fs.existsSync(configPath)) {
-  console.warn('WARNING: config.yaml missing — using default');
+  console.warn('[defaults]: config.yaml missing — using default');
   const defaultConfig = fs.readFileSync(path.join(defaultsDir, 'config.yaml'), 'utf-8');
   fs.writeFileSync(configPath, defaultConfig);
 }
@@ -39,7 +39,7 @@ const notFoundSlug = config?.pages?.notFound || 'obscured';
 const notFoundPath = path.join(pagesDir, `${notFoundSlug}.md`);
 
 if (!fs.existsSync(notFoundPath)) {
-  console.warn(`WARNING: 404 page "${notFoundSlug}.md" missing — using default`);
+  console.warn(`[defaults]: 404 page "${notFoundSlug}.md" missing — using default`);
   const defaultNotFound = fs.readFileSync(path.join(defaultsDir, 'obscured.md'), 'utf-8');
   fs.writeFileSync(notFoundPath, defaultNotFound);
 }
@@ -49,7 +49,7 @@ const pieceFiles = fs.existsSync(piecesDir)
   : [];
 
 if (pieceFiles.length === 0) {
-  console.warn('WARNING: No pieces found — creating default piece "It\'s A Start"');
+  console.warn('[defaults]: no pieces found — creating default piece "It\'s A Start"');
   const defaultPiece = fs.readFileSync(path.join(defaultsDir, 'its-a-start.md'), 'utf-8');
   const defaultPiecePath = path.join(piecesDir, 'its-a-start.md');
   fs.writeFileSync(defaultPiecePath, defaultPiece);
@@ -62,7 +62,7 @@ const pageFiles = fs.existsSync(pagesDir)
 const nonNotFoundPages = pageFiles.filter(f => f !== `${notFoundSlug}.md`);
 
 if (nonNotFoundPages.length === 0) {
-  console.warn('WARNING: No pages found — creating default "About" page');
+  console.warn('[defaults]: no pages found — creating default "About" page');
   const defaultPage = fs.readFileSync(path.join(defaultsDir, 'about.md'), 'utf-8');
   const defaultPagePath = path.join(pagesDir, 'about.md');
   fs.writeFileSync(defaultPagePath, defaultPage);
@@ -75,6 +75,6 @@ Disallow:
 Sitemap: ${siteUrl}/generated/sitemap.xml
 `;
 fs.writeFileSync(robotsPath, robotsContent);
-console.log('Generated robots.txt');
+console.log('[defaults]: generated robots.txt');
 
-console.log('\nDefaults check complete.\n');
+console.log('[defaults]: check complete');

build/generate-502-page.ts

@@ -0,0 +1,91 @@
+import fs from 'fs';
+import path from 'path';
+import yaml from 'js-yaml';
+import { loadTheme, ThemeConfig } from './utils/theme-loader';
+
+interface RedeployPageConfig {
+  title?: string;
+  message?: string;
+  submessage?: string;
+  refreshInterval?: number;
+  refreshNotice?: string;
+}
+
+interface Config {
+  site: {
+    name?: string;
+    title?: string;
+  };
+  theme?: string;
+  ui?: {
+    lowercase?: boolean;
+    theme?: {
+      defaultMode?: 'light' | 'dark';
+    };
+  };
+  redeployPage?: RedeployPageConfig;
+}
+
+const publicDir = path.join(process.cwd(), 'public');
+const generatedDir = path.join(publicDir, 'generated');
+const templateDir = path.join(process.cwd(), 'build', 'templates');
+
+if (!fs.existsSync(generatedDir)) {
+  fs.mkdirSync(generatedDir, { recursive: true });
+}
+
+const configPath = path.join(publicDir, 'config.yaml');
+const configContent = fs.readFileSync(configPath, 'utf-8');
+const config = yaml.load(configContent) as Config;
+
+const themeName = config.theme || 'journal';
+const theme = loadTheme(themeName);
+
+if (!theme) {
+  console.error(`[redeploy]: could not load theme: ${themeName}`);
+  process.exit(1);
+}
+
+const redeployConfig = config.redeployPage || {};
+const useLowercase = config.ui?.lowercase || false;
+const applyCase = (str: string) => useLowercase ? str.toLowerCase() : str;
+
+const title = applyCase(redeployConfig.title || 'Just a moment...');
+const message = applyCase(redeployConfig.message || "We're updating things behind the scenes.");
+const submessage = applyCase(redeployConfig.submessage || 'Please refresh in a few seconds.');
+const refreshInterval = redeployConfig.refreshInterval || 10;
+const refreshNotice = applyCase((redeployConfig.refreshNotice || 'This page will refresh automatically in {interval} seconds.').replace('{interval}', String(refreshInterval)));
+const siteName = config.site?.name || config.site?.title || 'Ode';
+
+function generate502Page(theme: ThemeConfig): string {
+  const mode = config.ui?.theme?.defaultMode || 'light';
+  const colors = theme.colors[mode];
+
+  const templatePath = path.join(templateDir, '502.html');
+  let template = fs.readFileSync(templatePath, 'utf-8');
+
+  const replacements: Record<string, string> = {
+    title,
+    siteName,
+    fontUrl: theme.font.url,
+    fontFamily: theme.font.family,
+    bgColor: colors.background,
+    fgColor: colors.text,
+    accentColor: colors.primary,
+    mutedColor: colors.grey2,
+    message,
+    submessage,
+    refreshNotice,
+    refreshInterval: String(refreshInterval),
+  };
+
+  for (const [key, value] of Object.entries(replacements)) {
+    template = template.replace(new RegExp(`{{${key}}}`, 'g'), value);
+  }
+
+  return template;
+}
+
+const html = generate502Page(theme);
+fs.writeFileSync(path.join(generatedDir, '502.html'), html);
+console.log('[redeploy]: generated 502.html');

build/generate-body-of-work.ts

@@ -63,7 +63,7 @@ if (bodyOfWorkOrder !== 'ascending' && bodyOfWorkOrder !== 'descending') {
   throw new Error(`Invalid order "${bodyOfWorkOrder}" in config.yaml bodyOfWork.order. Must be "ascending" or "descending".`);
 }
 
-console.log(`Sorting body of work in ${bodyOfWorkOrder} order.`);
+console.log(`[body-of-work]: sorting in ${bodyOfWorkOrder} order`);
 
 const sortedKeys = Object.keys(grouped).sort((a, b) => {
   const dateA = new Date(a);
@@ -91,6 +91,4 @@ sortedKeys.forEach(monthYear => {
 
 fs.writeFileSync(bodyOfWorkPath, markdown);
 
-console.log(`Body of work page generated successfully at ${bodyOfWorkPath}`);
-console.log(`Total pieces: ${pieces.length}`);
-console.log(`Months covered: ${sortedKeys.length}`);
+console.log(`[body-of-work]: generated with ${pieces.length} pieces across ${sortedKeys.length} months`);