// frontend/utils/preloadApi/index.js
// 统一导出 preloadApi（命令式 API）

import { loadConfig } from './config'
import { setConfig, setUserIdGetter } from './core'
import {
	get,
	run,
	refresh,
	abortRequest,
	invalidate,
	invalidatePrefix,
	invalidateAll,
	clearForUser,
	clearUser,
	prefetchFor,
	getStats,
	dumpMemory
} from './core'
import { warmStartup, warmIdle } from './scheduler'
import { navigateTo, switchTab, reLaunch } from './navigate'

/**
 * 初始化 preloadApi
 * @param {object} userConfig - preload.config.js 导出的配置
 * @returns {object} preloadApi 实例
 */
export function initPreloadApi(userConfig) {
	const { config, fetchers } = loadConfig(userConfig)
	setConfig(config, fetchers)

	return {
		// 核心 API
		get,
		run,
		refresh,
		abortRequest,
		invalidate,
		invalidatePrefix,
		invalidateAll,
		clearForUser,
		clearUser,
		prefetchFor,

		// 调度
		warmStartup: () => warmStartup(config.startup),
		warmIdle: () => warmIdle(config.idle),

		// 路由
		navigateTo,
		switchTab,
		reLaunch,

		// 调试
		getStats,
		dumpMemory,

		// 配置引用
		config
	}
}

// 默认单例（由 App.vue 初始化）
let _instance = null

export function getPreloadApi() {
	return _instance
}

export function setPreloadApi(api) {
	_instance = api
}

export { setUserIdGetter }