Implement Take Order Methods for Buy and Sell Orders

[AndreaDiazCorreia]

Description

Implement functionality for taking existing buy and sell orders, including all necessary message handling and state management according to the Mostro protocol.

Implementation Requirements

1. Implement take order methods:

async function takeSell(order: Order, amount?: number): Promise<MostroMessage> {
  // Validate order status
  // Handle amount calculation
  // Create and send take message
  // Handle response
}

async function takeBuy(order: Order, amount?: number): Promise<MostroMessage> {
  // Validate order status
  // Handle amount calculation
  // Create and send take message
  // Handle response
}

2. Message handling implementation:

interface TakeOrderMessage {
  order: {
    version: number;
    id: string;
    action: Action.TakeSell | Action.TakeBuy;
    content: {
      amount?: number;
      payment_request?: [null, string, number?];
    };
  };
}

Testing Requirements

describe('takeOrder', () => {
  it('should take sell orders correctly');
  it('should take buy orders correctly');
  it('should handle amount specification');
  it('should validate order status');
  it('should handle payment processing');
  it('should manage state transitions');
});

Acceptance Criteria

• Take sell functionality implemented
• Take buy functionality implemented
• Amount handling working
• Payment request handling
• State transitions correct
• Error handling complete

References

• Taking Sell Orders
• Taking Buy Orders