import { ISyncableProviderInstance } from "./ISyncableProviderInstance";

/**
 * Single authoritative registry tracking all active provider instances across all search capabilities.
 * Completely decoupled from SearchEngines, LM Studio SDK, and concrete provider implementations.
 */
export class ProviderInstanceRegistry {
  private static instance: ProviderInstanceRegistry;
  private providers: Map<string, ISyncableProviderInstance> = new Map();

  /**
   * Access global singleton instance.
   */
  public static getInstance(): ProviderInstanceRegistry {
    if (!ProviderInstanceRegistry.instance) {
      ProviderInstanceRegistry.instance = new ProviderInstanceRegistry();
    }
    return ProviderInstanceRegistry.instance;
  }

  /**
   * Register a syncable provider instance.
   * Uses provider.configIdentity (e.g. 'web.exa', 'image.serpapi') as the unique key.
   */
  public register(provider: ISyncableProviderInstance): void {
    if (!provider || !provider.configIdentity) {
      return;
    }
    const key = provider.configIdentity.toLowerCase().trim();
    this.providers.set(key, provider);
  }

  /**
   * Unregister a provider instance by its config identity string.
   */
  public unregister(configIdentity: string): boolean {
    const key = configIdentity.toLowerCase().trim();
    return this.providers.delete(key);
  }

  /**
   * Retrieve a registered provider instance by config identity string.
   */
  public get(configIdentity: string): ISyncableProviderInstance | undefined {
    const key = configIdentity.toLowerCase().trim();
    return this.providers.get(key);
  }

  /**
   * Return all currently registered provider instances.
   */
  public getAll(): ISyncableProviderInstance[] {
    return Array.from(this.providers.values());
  }

  /**
   * Clear all registered provider instances.
   */
  public clear(): void {
    this.providers.clear();
  }
}

export const defaultProviderInstanceRegistry = ProviderInstanceRegistry.getInstance();

import { ISyncableProviderInstance } from "./ISyncableProviderInstance";

/**
 * Single authoritative registry tracking all active provider instances across all search capabilities.
 * Completely decoupled from SearchEngines, LM Studio SDK, and concrete provider implementations.
 */
export class ProviderInstanceRegistry {
  private static instance: ProviderInstanceRegistry;
  private providers: Map<string, ISyncableProviderInstance> = new Map();

  /**
   * Access global singleton instance.
   */
  public static getInstance(): ProviderInstanceRegistry {
    if (!ProviderInstanceRegistry.instance) {
      ProviderInstanceRegistry.instance = new ProviderInstanceRegistry();
    }
    return ProviderInstanceRegistry.instance;
  }

  /**
   * Register a syncable provider instance.
   * Uses provider.configIdentity (e.g. 'web.exa', 'image.serpapi') as the unique key.
   */
  public register(provider: ISyncableProviderInstance): void {
    if (!provider || !provider.configIdentity) {
      return;
    }
    const key = provider.configIdentity.toLowerCase().trim();
    this.providers.set(key, provider);
  }

  /**
   * Unregister a provider instance by its config identity string.
   */
  public unregister(configIdentity: string): boolean {
    const key = configIdentity.toLowerCase().trim();
    return this.providers.delete(key);
  }

  /**
   * Retrieve a registered provider instance by config identity string.
   */
  public get(configIdentity: string): ISyncableProviderInstance | undefined {
    const key = configIdentity.toLowerCase().trim();
    return this.providers.get(key);
  }

  /**
   * Return all currently registered provider instances.
   */
  public getAll(): ISyncableProviderInstance[] {
    return Array.from(this.providers.values());
  }

  /**
   * Clear all registered provider instances.
   */
  public clear(): void {
    this.providers.clear();
  }
}

export const defaultProviderInstanceRegistry = ProviderInstanceRegistry.getInstance();