// frontend/utils/preloadApi/scheduler.js
// 调度器：启动期预热 + idle 预拉
// 依赖 core.js 的 run()

import { run } from './core'

// App 端 fallback：没有 requestIdleCallback，用 setTimeout
const idle =
	typeof requestIdleCallback === 'function'
		? requestIdleCallback
		: (cb) => setTimeout(() => cb({ didTimeout: false, timeRemaining: () => 50 }), 0)

/**
 * 启动期预热
 * @param {Array} startupList - config.startup 数组
 */
export function warmStartup(startupList) {
	if (!startupList || !Array.isArray(startupList)) return

	console.log('[preload] warmStartup:', startupList.length, 'keys')
	for (const entry of startupList) {
		// fire-and-forget：不 await，并发由 core 内部 semaphore 控制
		run(entry.key, entry.params)
	}
}

/**
 * idle 预拉（幂等：run 内部处理去重和缓存命中）
 * @param {Array} idleList - config.idle 数组
 */
export function warmIdle(idleList) {
	if (!idleList || !Array.isArray(idleList)) return

	idle(() => {
		console.log('[preload] warmIdle:', idleList.length, 'keys')
		for (const entry of idleList) {
			run(entry.key, entry.params)
		}
	})
}