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79 lines
2.0 KiB
79 lines
2.0 KiB
/**
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* 视图引擎中间件 - 纯粹的模板渲染职责
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*
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* 职责：
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* 1. 提供模板渲染能力
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* 2. 处理基础的渲染上下文
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* 3. 错误处理和日志记录
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*
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* 不负责：
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* - 业务数据获取
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* - 复杂的上下文构建
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* - 服务层调用
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*/
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import consolidate from 'consolidate'
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import { resolve } from 'path'
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import { logger } from '@/logger'
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export default function viewsMiddleware(viewPath, options = {}) {
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const {
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extension = 'pug',
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options: renderOptions = {}
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} = options
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return async function views(ctx, next) {
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if (ctx.render) return await next()
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/**
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* 渲染模板
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* @param {string} templatePath - 模板路径
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* @param {object} locals - 本地变量
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* @param {object} options - 渲染选项
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*/
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ctx.response.render = ctx.render = async function(templatePath, locals = {}, options = {}) {
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const fullPath = resolve(viewPath, `${templatePath}.${extension}`)
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// 基础上下文数据（只包含框架级别的数据）
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const baseContext = {
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currentPath: ctx.path,
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isLogin: !!(ctx.state && ctx.state.user),
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}
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// 合并上下文：基础上下文 + locals + ctx.state + 渲染选项
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const renderContext = Object.assign(
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{},
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baseContext,
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locals,
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renderOptions,
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ctx.state || {},
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options
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)
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// 添加 partials 支持
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renderContext.partials = Object.assign({}, renderOptions.partials || {})
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ctx.type = 'text/html'
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const render = consolidate[extension]
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if (!render) {
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throw new Error(`Template engine not found for ".${extension}" files`)
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}
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try {
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const html = await render(fullPath, renderContext)
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ctx.body = html
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return html
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} catch (err) {
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logger.error('View rendering error:', {
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template: templatePath,
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fullPath,
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error: err.message,
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stack: err.stack
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})
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throw err
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}
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}
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return await next()
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}
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}
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