feat(stocks): Add unified stock data API (getData) with historical/OHLCV support, smart caching and provider enhancements

ts/stocks/interfaces/stockprice.ts

@@ -1,5 +1,6 @@
 import * as plugins from '../../plugins.js';
 
+// Enhanced stock price interface with additional OHLCV data
 export interface IStockPrice {
   ticker: string;
   price: number;
@@ -12,6 +13,15 @@ export interface IStockPrice {
   marketState: 'PRE' | 'REGULAR' | 'POST' | 'CLOSED';
   exchange?: string;
   exchangeName?: string;
+
+  // Phase 1 enhancements
+  volume?: number;           // Trading volume
+  open?: number;            // Opening price
+  high?: number;            // Day high
+  low?: number;             // Day low
+  adjusted?: boolean;       // If price is split/dividend adjusted
+  dataType: 'eod' | 'intraday' | 'live'; // What kind of data this is
+  fetchedAt: Date;          // When we fetched (vs data timestamp)
 }
 type CheckStockPrice = plugins.tsclass.typeFest.IsEqual<
   IStockPrice,
@@ -25,11 +35,74 @@ export interface IStockPriceError {
   timestamp: Date;
 }
 
+// Pagination support for large datasets
+export interface IPaginatedResponse<T> {
+  data: T[];
+  pagination: {
+    currentPage: number;
+    totalPages: number;
+    totalRecords: number;
+    hasMore: boolean;
+    limit: number;
+    offset: number;
+  };
+}
+
+// Phase 1: Discriminated union types for different request types
+export type TIntervalType = '1min' | '5min' | '10min' | '15min' | '30min' | '1hour';
+export type TSortOrder = 'ASC' | 'DESC';
+
+// Current price request (latest EOD or live)
+export interface IStockCurrentRequest {
+  type: 'current';
+  ticker: string;
+  exchange?: string; // MIC code like 'XNAS', 'XNYS', 'XLON'
+}
+
+// Historical price request (date range)
+export interface IStockHistoricalRequest {
+  type: 'historical';
+  ticker: string;
+  from: Date;
+  to: Date;
+  exchange?: string;
+  sort?: TSortOrder;
+  limit?: number; // Max results per page (default 1000)
+  offset?: number; // For pagination
+}
+
+// Intraday price request (real-time intervals)
+export interface IStockIntradayRequest {
+  type: 'intraday';
+  ticker: string;
+  interval: TIntervalType;
+  exchange?: string;
+  limit?: number; // Number of bars to return
+  date?: Date; // Specific date for historical intraday
+}
+
+// Batch current prices request
+export interface IStockBatchCurrentRequest {
+  type: 'batch';
+  tickers: string[];
+  exchange?: string;
+}
+
+// Union type for all stock data requests
+export type IStockDataRequest =
+  | IStockCurrentRequest
+  | IStockHistoricalRequest
+  | IStockIntradayRequest
+  | IStockBatchCurrentRequest;
+
+// Legacy interfaces (for backward compatibility during migration)
+/** @deprecated Use IStockDataRequest with type: 'current' instead */
 export interface IStockQuoteRequest {
   ticker: string;
   includeExtendedHours?: boolean;
 }
 
+/** @deprecated Use IStockDataRequest with type: 'batch' instead */
 export interface IStockBatchQuoteRequest {
   tickers: string[];
   includeExtendedHours?: boolean;