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1// Lou Fantasy Baseball OpenAI AI Analysis Client
2// Robust OpenAI API integration for fantasy baseball performance analysis
3// Val.town Compatible TypeScript Implementation
4
89
90/**
91 * OpenAI API Configuration Interface
92 */
93export interface OpenAIConfig {
94  apiKey: string;
95  model: string;
96  maxTokens: number;
101
102/**
103 * OpenAI API Error Interface
104 */
105export interface OpenAIError {
106  type: "RATE_LIMIT" | "API_ERROR" | "TIMEOUT" | "PARSE_ERROR" | "AUTH_ERROR" | "UNKNOWN";
107  message: string;
108  statusCode?: number;
134  constructor(config?: Partial<OpenAIConfig>) {
135    this.config = {
136      apiKey: config?.apiKey || process.env.OPENAI_API_KEY || "",
137      model: config?.model || process.env.OPENAI_MODEL || "o4-mini",
138      maxTokens: config?.maxTokens || 4000,
142    };
143
144    if (!this.config.apiKey) {
145      console.error("❌ OpenAI API key not provided. Set OPENAI_API_KEY environment variable.");
146    }
147
262
263  /**
264   * Execute OpenAI API request with comprehensive retry logic
265   */
266  private async executeWithRetry<T>(operation: () => Promise<T>): Promise<T | null> {
297
298  /**
299   * Make OpenAI API request with proper error handling
300   */
301  private async makeOpenAIRequest(prompt: string, requestType: string): Promise<string | null> {
305      console.log(`🤖 Making OpenAI request: ${requestType}`);
306
307      // Validate API key
308      if (!this.config.apiKey) {
309        throw new Error("OpenAI API key not configured");
310      }
311
333      const timeoutId = setTimeout(() => controller.abort(), this.config.requestTimeout);
334
335      const response = await fetch("https://api.openai.com/v1/chat/completions", {
336        method: "POST",
337        headers: {
338          "Authorization": `Bearer ${this.config.apiKey}`,
339          "Content-Type": "application/json",
340        },
356
357      if (!content) {
358        throw new Error("Empty response from OpenAI API");
359      }
360
788
789  /**
790   * Enforce rate limiting between API requests
791   */
792  private async enforceRateLimit(): Promise<void> {
854    else if (statusCode === 429) type = "RATE_LIMIT";
855    else if (statusCode === 408) type = "TIMEOUT";
856    else if (statusCode >= 500) type = "API_ERROR";
857
858    return {
877    const errors: string[] = [];
878
879    if (!this.config.apiKey) {
880      errors.push("OpenAI API key is required");
881    }
882
900
901  /**
902   * Get current configuration (without API key)
903   */
904  public getConfig(): Omit<OpenAIConfig, "apiKey"> {
905    const { apiKey, ...configWithoutKey } = this.config;
906    return configWithoutKey;
907  }
908
909  /**
910   * Test OpenAI API connection
911   */
912  async testConnection(): Promise<{ success: boolean; error?: string; model?: string }> {
913    try {
914      console.log("🧪 Testing OpenAI API connection...");
915
916      const response = await this.makeOpenAIRequest(
917        "Please respond with a simple JSON object: {\"status\": \"connected\", \"message\": \"API test successful\"}",
918        "connection_test",
919      );
920
921      if (!response) {
922        return { success: false, error: "No response from API" };
923      }
924
925      const parsed = JSON.parse(response);
926      if (parsed.status === "connected") {
927        console.log("✅ OpenAI API connection successful");
928        return { success: true, model: this.config.model };
929      }
931      return { success: false, error: "Unexpected response format" };
932    } catch (error) {
933      console.error("❌ OpenAI API connection test failed:", error);
934      return {
935        success: false,

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