add an nginx example

examples/nginx/docker-compose.yml

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+services:
+  sqlpage:
+    image: lovasoa/sqlpage:main
+    volumes:
+      - sqlpage_socket:/tmp/sqlpage
+      - ./sqlpage_config:/etc/sqlpage
+      - ./website:/var/www/
+    environment:
+      - DATABASE_URL=mysql://sqlpage:sqlpage_password@mysql:3306/sqlpage_db
+      - SQLPAGE_UNIX_SOCKET=/tmp/sqlpage/sqlpage.sock
+    depends_on:
+      - mysql
+
+  nginx:
+    image: nginx:alpine
+    ports:
+      - "80:80"
+    volumes:
+      - sqlpage_socket:/tmp/sqlpage:ro
+      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
+    depends_on:
+      - sqlpage
+    command: >
+      sh -c "
+        adduser -D -u 1000 sqlpage || true &&
+        nginx -g 'daemon off;'
+      "
+
+  mysql:
+    image: mysql:8
+    environment:
+      - MYSQL_ROOT_PASSWORD=root_password
+      - MYSQL_DATABASE=sqlpage_db
+      - MYSQL_USER=sqlpage
+      - MYSQL_PASSWORD=sqlpage_password
+    volumes:
+      - mysql_data:/var/lib/mysql
+
+volumes:
+  mysql_data:
+  sqlpage_socket:

examples/nginx/nginx/nginx.conf

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+user sqlpage;
+worker_processes  auto;
+
+error_log  /var/log/nginx/error.log notice;
+pid        /var/run/nginx.pid;
+
+events {
+    worker_connections  1024;
+}
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile        on;
+    keepalive_timeout  65;
+
+    # Define a rate limiting zone
+    limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;
+
+    server {
+        listen 80;
+        server_name localhost;
+
+        # Serve static files directly
+        location /static/ {
+            alias /var/www/static/;
+        }
+
+        # Proxy requests to SQLPage
+        location / {
+            # Apply rate limiting
+            limit_req zone=one burst=5;
+
+            # URL rewriting example
+            rewrite ^/post/([0-9]+)$ /post.sql?id=$1 last;
+
+            proxy_pass http://unix:/tmp/sqlpage/sqlpage.sock;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+
+            # Enable caching
+            proxy_cache_valid 200 60m;
+            proxy_cache_valid 404 10m;
+            proxy_cache_use_stale error timeout http_500 http_502 http_503 http_504;
+
+            # Enable buffering
+            proxy_buffering on;
+            proxy_buffer_size 128k;
+            proxy_buffers 4 256k;
+            proxy_busy_buffers_size 256k;
+        }
+    }
+}

examples/nginx/sqlpage_config/migrations/000_init.sql

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+CREATE TABLE users (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    username VARCHAR(50) UNIQUE NOT NULL,
+    email VARCHAR(100) UNIQUE NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE posts (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT,
+    title VARCHAR(255) NOT NULL,
+    content TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(id)
+);
+
+CREATE TABLE comments (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    post_id INT,
+    user_id INT,
+    content TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (post_id) REFERENCES posts(id),
+    FOREIGN KEY (user_id) REFERENCES users(id)
+);
+
+INSERT INTO users (username, email) VALUES
+('john_doe', 'john@example.com'),
+('jane_smith', 'jane@example.com');
+
+INSERT INTO posts (user_id, title, content) VALUES
+(1, 'First Post', 'This is the content of the first post.'),
+(2, 'Hello World', 'Hello everyone! This is my first post.');
+
+INSERT INTO comments (post_id, user_id, content) VALUES
+(1, 2, 'Great post!'),
+(2, 1, 'Welcome to the community!');

examples/nginx/sqlpage_config/sqlpage.json

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+{
+  "max_database_pool_connections": 10,
+  "database_connection_idle_timeout_seconds": 1800,
+  "max_uploaded_file_size": 10485760,
+  "compress_responses": false,
+  "environment": "production"
+}

examples/nginx/website/add_comment.sql

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+INSERT INTO comments (post_id, user_id, content) VALUES ($id, 1, :content);
+SELECT 'redirect' as component, '/post/' || $id AS link;

examples/nginx/website/index.sql

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+SELECT 'list' AS component, 'Blog Posts' AS title;
+
+SELECT 
+    p.title,
+    u.username AS description,
+    'user' AS icon,
+    '/post/' || p.id AS link
+FROM posts p
+JOIN users u ON p.user_id = u.id
+ORDER BY p.created_at DESC;

examples/nginx/website/post.sql

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+-- Display the post content using the card component
+SELECT 'card' as component,
+       'Post Details' as title,
+       1 as columns;
+SELECT p.title as title,
+       u.username as subtitle,
+       p.content as description,
+       p.created_at as footer
+FROM posts p
+JOIN users u ON p.user_id = u.id
+WHERE p.id = $id;
+
+-- Add a divider
+SELECT 'divider' as component;
+
+-- Display comments using the list component
+SELECT 'list' as component,
+       'Comments' as title;
+SELECT u.username as title,
+       c.content as description,
+       c.created_at as subtitle,
+       'user' as icon,
+       CASE 
+         WHEN c.user_id = p.user_id THEN 'blue'
+         ELSE 'gray'
+       END as color
+FROM comments c
+JOIN users u ON c.user_id = u.id
+JOIN posts p ON c.post_id = p.id
+WHERE c.post_id = $id
+ORDER BY c.created_at DESC;
+
+-- Add a divider
+SELECT 'divider' as component;
+
+-- Add a comment form
+SELECT 'form' as component,
+       'Add a comment' as title,
+       'Post comment' as validate,
+       '/add_comment.sql?id=' || $id as action;
+
+SELECT 'textarea' as type,
+       'content' as name,
+       'Your comment' as label,
+       'Write your comment here' as placeholder,
+       true as required;