import fs from 'node:fs';
import Helper from 'sosise-core/build/Helper/Helper';
import PromptRepositoryInterface from './PromptRepositoryInterface';

/**
 * Prompt Repository
 * Handles reading prompt templates from storage/ma/prompts directory
 */
export default class PromptRepository implements PromptRepositoryInterface {
    /**
     * Get prompt by filename
     * @param promptFilename - Name of the prompt file
     * @returns Prompt content
     */
    public getPrompt(promptFilename: string): string {
        // Assemble prompt path
        const path = `${Helper.storagePath()}ma/prompts/${promptFilename}`;

        // In case prompt does not exists
        if (!fs.existsSync(path)) {
            throw new Error(`Prompt at path ${path} does not exists`);
        }

        // Read the prompt
        const fileBody = fs.readFileSync(path, 'utf-8');

        // Return
        return fileBody;
    }
}