// ORATS connector placeholder.
//
// When ORATS credentials are supplied via the `ORATS_API_KEY` environment
// variable, this client should call the relevant ORATS Data API endpoints
// and return responses shaped exactly like the types in `shared/schema.ts`.
//
// Suggested ORATS endpoints for the MVP feature set:
//   - GET https://api.orats.io/datav2/strikes?ticker=SPY            (strike-level gamma + OI)
//   - GET https://api.orats.io/datav2/summaries?ticker=SPY          (IV, IVR, expected move)
//   - GET https://api.orats.io/datav2/cores?ticker=SPY              (spot, daily series)
//   - GET https://api.orats.io/datav2/monies/implied?ticker=SPY     (implied skew curves)
//
// Required transformations (left as TODO for future wiring):
//   * Aggregate strike-level gamma * OI * 100 * spot^2 * 0.01 to produce the
//     bars used by `GexProfile`.
//   * Derive call wall = strike with max positive call gamma exposure.
//   * Derive put wall  = strike with min (most negative) put gamma exposure.
//   * HVL/gamma flip   = strike where cumulative net gamma crosses zero.
//
// Until ORATS is wired up the routes call into `marketData.ts` instead.

export interface OratsClientConfig {
  apiKey?: string;
  baseUrl?: string;
}

export class OratsClient {
  private apiKey: string;
  private baseUrl: string;

  constructor(config: OratsClientConfig = {}) {
    this.apiKey = config.apiKey ?? process.env.ORATS_API_KEY ?? "";
    this.baseUrl = config.baseUrl ?? "https://api.orats.io/datav2";
  }

  isConfigured(): boolean {
    return this.apiKey.length > 0;
  }

  // Future wiring: throws until implemented so callers can fall back to mocks.
  async fetchStrikes(_ticker: string): Promise<never> {
    throw new Error("OratsClient.fetchStrikes not yet implemented");
  }

  async fetchSummary(_ticker: string): Promise<never> {
    throw new Error("OratsClient.fetchSummary not yet implemented");
  }

  async fetchMonies(_ticker: string): Promise<never> {
    throw new Error("OratsClient.fetchMonies not yet implemented");
  }
}

export const oratsClient = new OratsClient();