syntax = "proto3";
package kairos.v1;

option go_package = "github.com/kairos/proto/kairos/v1";

// Provider represents the exchange/platform source of data
enum Provider {
  PROVIDER_UNSPECIFIED = 0;
  PROVIDER_KALSHI = 1;
  PROVIDER_POLYMARKET = 2;
  PROVIDER_OPINION = 3;
  PROVIDER_LIMITLESS = 4;
  PROVIDER_ROBINHOOD = 5;
  PROVIDER_ORACLE = 6;
  PROVIDER_EQUITY = 7;
  PROVIDER_PREDICT_FUN = 8;
  PROVIDER_HYPERLIQUID = 9;
  // Hyperliquid perpetuals. Distinct from PROVIDER_HYPERLIQUID, which is the
  // HIP-4 outcome markets: they share a venue but are different products with
  // different instrument ids and price scales, and the publisher derives the
  // NATS subject token from this enum — so folding them together would put
  // perpetual books in the outcome markets' subject namespace.
  // 10 and 11 are reserved by services/providers/provider_map.py for
  // polymarket_perps and kalshi_margin. That registry is the single source of
  // truth for numeric provider ids, and this enum shares its numbering space,
  // so this takes the next free slot rather than colliding.
  PROVIDER_HYPERLIQUID_PERPS = 12;
  // Matches services/providers/provider_map.py, which reserves 10 for this
  // venue. That registry is the single source of truth for numeric ids.
  PROVIDER_POLYMARKET_PERPS = 10;
  // Kalshi perpetuals, which the venue and the registry both call "margin".
  // Distinct from PROVIDER_KALSHI in the same way the two Hyperliquid entries
  // are: a different host, a different book model, and its own NATS subject
  // namespace. Registry id 11.
  PROVIDER_KALSHI_MARGIN = 11;
}

// PriceLevel represents a single price level in an orderbook
message PriceLevel {
  // Price scaled by 10000 (e.g., 6500 = 0.65)
  int32 price = 1;
  // Size scaled for precision (depends on provider)
  int64 size_scaled = 2;
}

// TradeSide indicates the direction of a trade
enum TradeSide {
  TRADE_SIDE_UNSPECIFIED = 0;
  TRADE_SIDE_BUY = 1;
  TRADE_SIDE_SELL = 2;
}