/**
 * 请求封装
 * 根据环境自动切换 API 地址
 */
import { getCurrentConfig, CURRENT_ENV } from '@/config/index.js'

// 缓存配置
let configCache = null

// 初始化配置
const initConfig = async () => {
	if (!configCache) {
		configCache = await getCurrentConfig()
		console.log('当前环境:', configCache.env, '| API 地址:', configCache.baseUrl)
	}
	return configCache
}

// 预加载配置
initConfig()

/**
 * 统一请求方法
 */
export const request = async (options) => {
	// 确保配置已加载
	const config = await initConfig()
	const { baseUrl, timeout, debug } = config
	
	return new Promise((resolve, reject) => {
		// 获取 token
		const token = uni.getStorageSync('token') || ''
		
		if (debug) {
			console.log('Request:', options.method || 'GET', options.url, options.data)
		}
		
		uni.request({
			url: baseUrl + options.url,
			method: options.method || 'GET',
			data: options.data || {},
			header: {
				'Content-Type': 'application/json',
				'Authorization': token ? `Bearer ${token}` : ''
			},
			timeout: timeout,
			success: (res) => {
				const { statusCode, data } = res
				
				if (debug) {
					console.log('Response:', statusCode, data)
				}
				
				// HTTP 状态码判断
				if (statusCode === 200) {
					// 业务状态码判断
					if (data.code === 0 || data.code === 200 || data.success) {
						resolve(data)
					} else {
						// 业务错误
						uni.showToast({
							title: data.message || data.msg || '请求失败',
							icon: 'none',
							duration: 2000
						})
						reject(data)
					}
				} else if (statusCode === 401) {
					// 未授权，清除缓存并跳转登录页
					uni.removeStorageSync('userInfo')
					uni.removeStorageSync('token')
					uni.reLaunch({
						url: '/pages/login/login'
					})
					reject({ message: '未授权，请重新登录' })
				} else {
					// 其他错误
					uni.showToast({
						title: '网络请求失败',
						icon: 'none',
						duration: 2000
					})
					reject(res)
				}
			},
			fail: (err) => {
				console.error('Request fail:', err)
				uni.showToast({
					title: '网络连接失败',
					icon: 'none',
					duration: 2000
				})
				reject(err)
			}
		})
	})
}

/**
 * 快捷请求方法
 */
export const get = (url, data) => {
	return request({ url, method: 'GET', data })
}

export const post = (url, data) => {
	return request({ url, method: 'POST', data })
}

export const put = (url, data) => {
	return request({ url, method: 'PUT', data })
}

export const del = (url, data) => {
	return request({ url, method: 'DELETE', data })
}

export default request