import type { Tool, ToolInputSchema } from './types.js';

export interface AnthropicToolDef {
  name: string;
  description: string;
  input_schema: ToolInputSchema;
}

export interface OpenAIToolDef {
  type: 'function';
  function: {
    name: string;
    description: string;
    parameters: ToolInputSchema;
  };
}

export class ToolRegistry {
  private tools: Map<string, Tool> = new Map();

  register(tool: Tool): void {
    if (this.tools.has(tool.name)) {
      throw new Error(`Tool '${tool.name}' is already registered`);
    }
    this.tools.set(tool.name, tool);
  }

  unregister(name: string): boolean {
    return this.tools.delete(name);
  }

  get(name: string): Tool | undefined {
    return this.tools.get(name);
  }

  list(): Tool[] {
    return Array.from(this.tools.values());
  }

  toAnthropicFormat(): AnthropicToolDef[] {
    return this.list().map(t => ({
      name: t.name,
      description: t.description,
      input_schema: t.inputSchema,
    }));
  }

  toOpenAIFormat(): OpenAIToolDef[] {
    return this.list().map(t => ({
      type: 'function' as const,
      function: {
        name: t.name,
        description: t.description,
        parameters: t.inputSchema,
      },
    }));
  }
}