Graphql queries for trade service

trade_graphql.md

Trading

Market are define as a pair of assets such as ETH-GBP. ETH is the base asset, while GBP is the quote asset.

Prices are expressed in quote asset values.

Price quotation:

  enum Markets {
    ETH_GBP
  }

  type PriceQuote {
    price: String!
    quoteId: String!
    fee: Float
    expiration: Int!
  }

  type Query {
    priceQuote(market: Markets!): PriceQuote!
  }

Where $market equal to ETH-GBP

Orders

  enum OrderStatus {
    OK
  }

  enum OrderSide {
    BUY
    SELL
  }

Exchange GBP for ETH:

  type Mutation {
    createOrder(order: CreateOrderInput!): OrderStatus!
  }

Where OrderInput equals to:

  input CreateOrderInput {
    market: Markets!
    price: Float!
    priceQuoteId: String
    side: OrderSide!
    quoteAmount: String # Amount in GBP
  }

Exchange ETH for GBP:

  type Mutation {
    createOrder(order: CreateOrderInput!): OrderStatus!
  }

Where OrderInput equal:

input CreateOrderInput {
  market: Markets!
  price: String
  priceQuoteId: String
  side: OrderSide!
  baseAmount: String # Amount in ETH
}