# Backend

### ​[Supabase](https://supabase.com/)​ <a href="#supabase" id="supabase"></a>

**Trade Condition Storage:**&#x20;

* **Process:** When traders set up their trade conditions for automation, Splurge stores these details in a Supabase-managed database.
* **Security Measures:** For added security, traders sign off on the trade details with a unique, randomly generated salt to prevent replay attacks. Splurge saves this signature in Supabase, enabling us to execute trades on the trader's behalf.
* **Token Approval:** Traders must authorize their tokens for trading via the [Splurge Contract](https://arbiscan.io/address/0xe3345d0cca4c478cf16cdd0b7d7363ba223c87af#code).

**Access Security:**&#x20;

* **RLS Policy:** We implement a robust Row-Level Security (RLS) policy, ensuring traders can only access their own automation jobs.
* **JWT Validation:** This security is enforced by verifying a unique JWT (JSON Web Token) for each wallet, generated by Dynamic.
* **Privacy Assurance:** The only entities with access to your automation jobs are you, the trader, and Splurge.

### Automation Infrastructure <a href="#automation-infrastructure" id="automation-infrastructure"></a>

* **Functionality:** Splurge currently sources the best prices from various liquidity pools using GeckoTerminal. It then performs necessary calculations to determine if a trade's conditions are met.
* **Technology:** These processes are containerized using Docker and operate continuously on Google Cloud for prompt trade execution.
* **Future Improvements:** We aim to decentralize our Automation Infrastructure using ZK-Proofs. This will allow the evaluation of automation jobs to be distributed among various validators/nodes, enhancing security and reducing future costs.

### Automation Execution <a href="#automation-execution" id="automation-execution"></a>

* **Triggering Trades:** When trade conditions are met, our keeper bot is notified by the Automation Infrastructure.
* **Pre-Execution Check:** Tenderly simulates the trade to confirm its security and the expected outcome.
* **Execution:** The trade is executed through the [Splurge Smart Contract's](https://arbiscan.io/address/0xe3345d0cca4c478cf16cdd0b7d7363ba223c87af#code) `verifyExecuteTrade()` function.
* **Settlement and Delivery:** We utilize the [0x Protocol](https://0x.org/docs/developer-resources/contract-addresses) to settle trades at optimal rates across all liquidity pools. Post-settlement, the proceeds are directly sent to the trader.


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