Psql server

.gitignore

@@ -24,5 +24,5 @@ temp/
 # yarn.lock
 # pnpm-lock.yaml
 # or if you use specific test result files
-# coverage/
+coverage/
 # test-results/

CLAUDE.md

@@ -0,0 +1,23 @@
+# QueryLeaf Development Guide
+
+## Build & Test Commands
+- Full build: `yarn build`
+- Typecheck: `yarn typecheck`
+- Lint: `yarn lint` (fix: `yarn lint:fix`)
+- Format: `yarn format` (check: `yarn format:check`)
+- Run all tests: `yarn test`
+- Run individual package tests: `yarn test:lib`, `yarn test:cli`, `yarn test:server`, `yarn test:pg-server`
+- Run single test: `cd packages/[package] && npx jest -t "test name"` or `npx jest path/to/test.test.ts -t "test name"`
+- Integration tests: `yarn test:lib:integration` (requires Docker)
+- Documentation: `yarn docs:serve` (dev), `yarn docs:build` (build)
+
+## Code Style Guidelines
+- TypeScript with strict typing; avoid `any` when possible
+- Single quotes, trailing commas, 2-space indentation, 100 char line limit
+- Prefix unused variables with underscore (e.g., `_unused`)
+- Monorepo structure with packages: lib, cli, server, postgres-server
+- Descriptive variable/function names in camelCase
+- Error handling with proper try/catch blocks and meaningful error messages
+- Use async/await for asynchronous code
+- Follow existing patterns for similar functionality
+- Tests should cover both unit and integration cases

README.md

@@ -25,6 +25,11 @@ QueryLeaf is a library that translates SQL queries into MongoDB commands. It par
   - Array element access (e.g., `items[0].name`)
   - GROUP BY with aggregation functions (COUNT, SUM, AVG, MIN, MAX)
   - JOINs between collections
+- Multiple interfaces:
+  - Library for direct integration in your code
+  - CLI for command-line SQL queries
+  - Web Server for REST API access
+  - **PostgreSQL Wire Protocol Server** for connecting with standard PostgreSQL clients
 
 ## SQL to MongoDB Translation Examples
 

docs/index.md

@@ -157,7 +157,7 @@ db.collection('users').aggregate([
 <div class="use-cases-section">
   <div class="container">
     <div class="section-title">
-      <h2>Three Ways to Use QueryLeaf</h2>
+      <h2>Four Ways to Use QueryLeaf</h2>
       <p>Choose the right option for your workflow</p>
     </div>
 
@@ -304,6 +304,52 @@ const { results, rowCount, executionTime } = await response.json();
       </div>
     </div>
 
+    <!-- PostgreSQL Server Package -->
+    <div class="package-section package-pg-server">
+      <div class="package-content">
+        <h3>4. PostgreSQL Wire Protocol Server</h3>
+        <ul class="package-features">
+          <li>Connect to MongoDB using any standard PostgreSQL client</li>
+          <li>Use tools like pgAdmin, DBeaver, or Beekeeper Studio</li>
+          <li>Native integration with any application supporting PostgreSQL</li>
+          <li>No specialized drivers or adapters needed</li>
+          <li>Transaction support (BEGIN, COMMIT, ROLLBACK)</li>
+        </ul>
+        <div class="package-buttons">
+          <a href="usage/postgres-server/" class="md-button">
+            PostgreSQL Server Documentation
+          </a>
+        </div>
+      </div>
+      <div class="package-code">
+```bash
+# Install globally
+npm install -g @queryleaf/postgres-server
+
+# Start the PostgreSQL-compatible server
+queryleaf-pg-server --db mydb
+
+# Connect with any PostgreSQL client:
+psql -h localhost -p 5432 -d mydb -U any_username
+```
+
+```
+# Or use in your application code:
+import { MongoClient } from 'mongodb';
+import { PostgresServer } from '@queryleaf/postgres-server';
+
+// Create and start the server
+const mongoClient = new MongoClient('mongodb://localhost:27017');
+await mongoClient.connect();
+
+const pgServer = new PostgresServer(mongoClient, 'mydb', {
+  port: 5432,
+  host: 'localhost'
+});
+```
+      </div>
+    </div>
+
     <div class="package-buttons-container">
       <a href="getting-started/installation/" class="md-button md-button--primary">
         Get Started with QueryLeaf
@@ -338,6 +384,11 @@ const { results, rowCount, executionTime } = await response.json();
   background: linear-gradient(to right, #f5f9f5, #ffffff);
 }
 
+.package-pg-server {
+  background: linear-gradient(to right, #ffffff, #f5f9f5);
+  flex-direction: row-reverse;
+}
+
 .package-content, .package-code {
   flex: 1;
   padding: 30px;
@@ -414,7 +465,7 @@ const { results, rowCount, executionTime } = await response.json();
             <li>Full feature set</li>
             <li>Commercial license</li>
             <li>Email support</li>
-            <li>All packages included (Library, CLI, Server)</li>
+            <li>All packages included (Library, CLI, Web Server, PostgreSQL Server)</li>
             <li>Use in proprietary applications</li>
             <li>No AGPL requirements</li>
           </ul>

docs/overrides/partials/integrations/analytics/custom.html

@@ -0,0 +1,2 @@
+<!-- Fathom - beautiful, simple website analytics -->
+<script src="https://cdn.usefathom.com/script.js" data-spa="auto" data-site="SGMKGHHQ" defer></script> <!-- / Fathom -->

docs/support/license-faq.md

@@ -0,0 +1,77 @@
+# License FAQ
+
+## General Questions
+
+### What license does QueryLeaf use?
+QueryLeaf uses a dual licensing model:
+- GNU Affero General Public License v3 (AGPL-3.0) for the Community Edition
+- Commercial License for businesses using QueryLeaf in proprietary applications
+
+### What is the difference between the AGPL and Commercial Licenses?
+The AGPL is a strong copyleft license that requires any modifications to be shared under the same license and requires source code disclosure if you run a modified version as a service. The Commercial License removes these requirements, allowing you to use QueryLeaf in proprietary applications without disclosing your source code.
+
+### Which license should I choose?
+- Choose the **AGPL license** if you are working on open source projects, personal projects, or for evaluation.
+- Choose the **Commercial License** if you are using QueryLeaf in a proprietary application, especially if you're offering it as a service or if you need commercial support.
+
+## AGPL Questions
+
+### Can I use the AGPL version in a commercial project?
+Yes, but with important caveats. If your application is offered as a service (including web applications), the AGPL requires you to make the source code of your application available to users, including any modifications you've made to QueryLeaf.
+
+### Does the AGPL affect my entire application?
+Yes, the AGPL's copyleft provisions generally extend to the entire application that incorporates the AGPL-licensed code, not just the QueryLeaf parts.
+
+### What if I'm only using QueryLeaf internally?
+Even internal usage may trigger AGPL requirements if users (including employees) interact with the application over a network. For purely internal tools where source code is never shared outside your organization, AGPL may be suitable, but consult with your legal team.
+
+## Commercial License Questions
+
+### What does the Commercial License cover?
+The Commercial License covers all QueryLeaf components:
+- Core library
+- Command-line interface (CLI)
+- Web Server
+- PostgreSQL Server
+
+### Are there any usage limitations with the Commercial License?
+The Commercial License prohibits:
+- Using QueryLeaf to create a competing product
+- Redistributing QueryLeaf as a standalone product
+- Removing copyright notices
+
+### Do I need a license for each developer or for each deployment?
+Our pricing is structured per developer for the Developer License. The Business License covers unlimited developers. There are no additional per-deployment or per-server fees.
+
+### Do I need to purchase a separate license for the PostgreSQL Server?
+No, all server components (Web Server and PostgreSQL Server) are included in the same Commercial License. There's no need to purchase separate licenses for different components.
+
+## Server-specific Questions
+
+### Does the AGPL apply to the PostgreSQL Server and Web Server components?
+Yes, if you're using the AGPL version, the license requirements apply to both server components. If you run either server as a service, you must make the source code (including modifications) available to users of that service.
+
+### Are there any technical limitations in the Community Edition of the servers?
+No, the Community Edition includes the full functionality of both server components. The difference is purely in the licensing terms, not in technical capabilities.
+
+### Can I embed the PostgreSQL Server in my application?
+- With the **AGPL license**: Yes, but you must make your application's source code available to users.
+- With the **Commercial license**: Yes, with no requirement to disclose your source code.
+
+## Support Questions
+
+### Does the Commercial License include support?
+Yes, all commercial licenses include email support. Higher-tier licenses include priority support, quarterly reviews, and dedicated account managers.
+
+### Is there any support for the Community Edition?
+Community support is available through GitHub issues. Commercial support is only available with a paid license.
+
+### How do I upgrade my license?
+To upgrade from Developer to Business or from Business to Enterprise, contact [[email protected]](mailto:[email protected]) with your current license information.
+
+## Still Have Questions?
+
+If you have additional questions about licensing or need help determining which license is right for you, please contact us:
+
+- Email: [[email protected]](mailto:[email protected])
+- Subject: "License Question"

docs/support/pricing.md

@@ -0,0 +1,91 @@
+# Pricing & Licensing
+
+QueryLeaf uses a dual-licensing model designed to balance open source availability with sustainable commercial development.
+
+## Licensing Options
+
+QueryLeaf is available under two licensing options:
+
+1. **AGPL v3 License (Community Edition)** - Free for open source projects, personal use, and evaluation
+2. **Commercial License** - For commercial use in proprietary applications
+
+## Community Edition
+
+The Community Edition of QueryLeaf is licensed under the [GNU Affero General Public License v3 (AGPL-3.0)](https://www.gnu.org/licenses/agpl-3.0.html). This license:
+
+- Allows free use, modification, and distribution of the software
+- Requires that any modifications to the software be shared under the same license
+- Requires source code disclosure if you run a modified version of the software as a service over a network
+- Has strong copyleft provisions that may affect proprietary applications
+
+The AGPL license is perfect for:
+- Open source projects
+- Personal projects
+- Educational purposes
+- Evaluation before purchase
+
+## Commercial License
+
+Our Commercial License is designed for businesses and organizations that require more flexibility in how they use and distribute QueryLeaf. This license:
+
+- Removes the AGPL requirements for source code disclosure
+- Allows integration into proprietary software without license contamination
+- Provides commercial support options
+- Includes all components: Library, CLI, Web Server, and PostgreSQL Server
+
+## Pricing Plans
+
+### Developer License
+- **$49** per developer per month
+- Ideal for individual developers and small teams
+- Includes:
+  - Full feature set
+  - Commercial license
+  - Email support
+  - All packages (Library, CLI, Web Server, PostgreSQL Server)
+  - Use in proprietary applications
+  - No AGPL requirements
+
+### Business License
+- Starting at **$99+** per month
+- Perfect for teams and growing businesses
+- Includes:
+  - Everything in Developer tier
+  - Unlimited developers
+  - Priority email support
+  - Quarterly reviews
+  - Performance optimization
+  - Extended security updates
+
+### Enterprise License
+- **Custom pricing** based on your needs
+- For organizations requiring dedicated support and custom features
+- Includes:
+  - Everything in Business tier
+  - Dedicated account manager
+  - Priority support with SLA
+  - Custom development available
+  - Deployment assistance
+  - Training and onboarding
+
+## Server Components and Licensing
+
+Both the Web Server and PostgreSQL Server components are covered under the same dual-licensing model. This means:
+
+1. **Under AGPL**: If you run either server as a service, you must make the source code (including any modifications) available to users of that service.
+
+2. **Under Commercial License**: You can run and distribute the server components as part of your proprietary applications without AGPL obligations.
+
+The PostgreSQL Server component is particularly valuable for commercial users as it allows seamless integration with existing PostgreSQL clients and tools, making it ideal for enterprise deployments.
+
+## How to Purchase
+
+For more information or to purchase a commercial license:
+
+- **Developer License**: [Email [email protected]](mailto:[email protected]?subject=QueryLeaf Developer License)
+- **Business License**: [Email [email protected]](mailto:[email protected]?subject=QueryLeaf Business License)
+- **Enterprise License**: [Email [email protected]](mailto:[email protected]?subject=QueryLeaf Enterprise License)
+
+## Need Help?
+
+For questions about licensing or to discuss your specific needs, please [contact our sales team](mailto:[email protected]).