openai-compat-endpoint

// src/file-cache.ts
// Module for caching model list to file

import * as fs from 'fs';
import * as path from 'path';

const CACHE_FILE = 'models-cache.json';

export interface ModelCache {
  timestamp: number;
  allModels: string[];
  freeModels: string[];
}

/**
 * Gets path to cache file in plugin directory
 */
function getCachePath(): string {
  return path.join(__dirname, '..', CACHE_FILE);
}

/**
 * Loads cache from file
 * Cache is stored indefinitely — TTL removed for manual user loading
 */
export function loadCache(): ModelCache | null {
  try {
    const cachePath = getCachePath();
    if (!fs.existsSync(cachePath)) {
      return null;
    }

    const data = fs.readFileSync(cachePath, 'utf-8');
    const cache: ModelCache = JSON.parse(data);

    return cache;
  } catch (error) {
    console.error('[Cache] Failed to load cache:', error);
    return null;
  }
}

/**
 * Saves cache to file
 */
export function saveCache(allModels: string[], freeModels: string[]): void {
  try {
    const cache: ModelCache = {
      timestamp: Date.now(),
      allModels,
      freeModels
    };

    const cachePath = getCachePath();
    fs.writeFileSync(cachePath, JSON.stringify(cache, null, 2), 'utf-8');
  } catch (error) {
    console.error('[Cache] Failed to save cache:', error);
  }
}