feat: implement first useApi basics

examples/next/Metainfo.vue

@@ -48,7 +48,7 @@ export default {
       targets[target].push(vnodes)
       continue
     }
-console.log('TARGETS', targets)
+// console.log('TARGETS', targets)
     return Object.keys(targets).map(target => {
       return h(Teleport, { to: target }, targets[target])
     })

examples/next/index.js

@@ -1,68 +1,127 @@
-import { markRaw, reactive, onMounted } from 'vue'
+import { markRaw, reactive, onMounted, customRef, getCurrentInstance } from 'vue'
+import { def, hasOwn, isObject, isArray, isPlainObject } from '@vue/shared'
 import { defaultMapping } from './config'
 
-const apps = {}
-let appId = 1
+let appId = 0
 
-export function createMeta ({ config }) {
-  const id = Symbol(`vue-meta-${appId++}`)
-
-  const Meta = {
-    id,
+export function createMeta ({ resolver, config }) {
+  const id = Symbol(`vueMeta[${appId++}]`)
 
+  return {
     install (app) {
-      let watchersAdded = false
+      const $metaInfo = {
+        id,
+        resolver,
+        shadow: markRaw({}),
+        metainfo: reactive({})
+      }
 
+      app.config.globalProperties.$metaInfo = $metaInfo
+      app.provide('metainfo', $metaInfo.metainfo)
       app.provide('__vueMetaConfig', {
+        id,
         ...defaultMapping,
         ...config
       })
 
-      app.mixin({
-        created () {
-          if (this === this.$root) {
-            watchersAdded = true
-          }
-
-          if (!this.metaData || watchersAdded) {
-            return
-          }
-
-          let depth = 0
-          let parent = this
-          while (parent) {
-            parent = parent.$parent
-            depth++
-
-            if (parent === this.$root) {
-              break
-            }
-          }
-
-          this.__meta = markRaw({
-            depth
-          })
-          console.log('CREATED', this, this.metaData, depth)
-        }
-      })
-
       app.config.globalProperties.$meta = this
     }
   }
-
-  apps[id] = Meta
-
-  return Meta
 }
 
-export function useMeta (rawMetainfo) {
-  onMounted(vmMounted)
+export function useMeta (obj) {
+  const vm = getCurrentInstance()
 
-  const metainfo = reactive(rawMetainfo)
+  const { shadow, metainfo } = vm.ctx.$metaInfo
+  addMetainfoRecursive(obj, vm, shadow, metainfo)
 
-  return metainfo
+  return createProxy(obj, createHandler(vm))
 }
 
-function vmMounted () {
-  console.log('MOUNTED', this, arguments)
+function createProxy (obj, handler) {
+  return new Proxy(obj, handler)
+}
+
+function createHandler (vm, keyPath = []) {
+  return {
+    get (target, prop) {
+      const value = target[prop]
+
+      if (isObject(value)) {
+        if (!value.__vm_proxy) {
+          const newKeyPath = [...keyPath, prop]
+
+          const handler = createHandler(vm, newKeyPath)
+          value.__vm_proxy = createProxy(value, handler)
+        }
+
+        return value.__vm_proxy
+      }
+
+      return value
+    },
+    set (target, prop, value) {
+      updateMetainfo(keyPath, vm, prop, value)
+      return true
+    }
+  }
+}
+
+function addMetainfoRecursive (obj, vm, shadowParent, liveParent) {
+  for (const key in obj) {
+    if (isPlainObject(obj[key])) {
+      if (!shadowParent[key]) {
+        shadowParent[key] = {}
+        liveParent[key] = {}
+      }
+
+      addMetainfoRecursive(obj[key], vm, shadowParent[key], liveParent[key])
+      continue
+    }
+
+    if (!shadowParent[key]) {
+      shadowParent[key] = []
+    }
+
+    shadowParent[key].push({ vm, value: obj[key] })
+
+    setLive(vm, key, shadowParent, liveParent)
+  }
+}
+
+function updateMetainfo (keyPath, vm, key, value) {
+  let { shadow: shadowParent, metainfo: liveParent } = vm.ctx.$metaInfo
+
+  for (const _key of keyPath) {
+    shadowParent = shadowParent[_key]
+    liveParent = liveParent[_key]
+  }
+
+  if (isPlainObject(value)) {
+    if (!shadowParent[key]) {
+      shadowParent[key] = {}
+      liveParent[key] = {}
+    }
+    // TODO: fix this shit
+    addMetainfoRecursive(value, vm, shadowParent[key], liveParent[key])
+    return
+  }
+
+  const idx = shadowParent[key].findIndex(({ vm: _vm }) => _vm === vm)
+  shadowParent[key][idx].value = value
+
+  setLive(vm, key, shadowParent, liveParent)
+}
+
+function setLive (vm, key, shadowParent, liveParent) {
+  let value
+  if (shadowParent[key].length > 1) {
+    value = vm.ctx.$metaInfo.resolver(shadowParent[key])
+  } else {
+    value = shadowParent[key][0].value
+  }
+
+  if (!hasOwn(liveParent, key) || liveParent[key] !== value) {
+    liveParent[key] = value
+  }
 }

examples/next/render.js

@@ -2,7 +2,7 @@ import { h } from 'vue'
 import { getConfigKey } from './config'
 
 export function renderMeta (ctx, key, data, config) {
-  console.info('renderMeta', key, data, config)
+  // console.info('renderMeta', key, data, config)
 
   if (config.group) {
     return renderGroup(ctx, key, data, config)
@@ -12,7 +12,7 @@ export function renderMeta (ctx, key, data, config) {
 }
 
 export function renderGroup (ctx, key, data, config) {
-  console.info('renderGroup', key, data, config)
+  // console.info('renderGroup', key, data, config)
 
   if (Array.isArray(data)) {
     config.contentAttributes = getConfigKey([key, config.tag], 'contentAttributes', config)
@@ -107,10 +107,10 @@ export function renderTag (ctx, key, data, config = {}, groupConfig = {}) {
     ? `${groupConfig.tagNamespace}:${tag}`
     : tag
 
-  console.info('FINAL TAG', finalTag)
-  console.log('      ATTRIBUTES', attributes)
-  console.log('      CONTENT', content)
-  // console.log(data, attributes, config)
+  // console.info('FINAL TAG', finalTag)
+  // console.log('      ATTRIBUTES', attributes)
+  // console.log('      CONTENT', content)
+  // // console.log(data, attributes, config)
 
   if (hasChilds) {
     for (const child of content) {

examples/package.json

@@ -20,15 +20,15 @@
   },
   "homepage": "https://github.com/nuxt/vue-meta#readme",
   "devDependencies": {
-    "@babel/core": "^7.9.0",
+    "@babel/core": "^7.9.6",
     "@babel/node": "^7.8.7",
     "@babel/plugin-syntax-dynamic-import": "^7.8.3",
-    "@babel/preset-env": "^7.9.5",
+    "@babel/preset-env": "^7.9.6",
     "@vue/compiler-sfc": "^3.0.0-alpha.10",
     "@vue/server-renderer": "^3.0.0-alpha.10",
     "babel-loader": "^8.1.0",
-    "babel-plugin-dynamic-import-node": "^2.3.0",
-    "consola": "^2.11.3",
+    "babel-plugin-dynamic-import-node": "^2.3.3",
+    "consola": "^2.12.1",
     "core-js": "3",
     "cross-env": "^7.0.2",
     "express": "^4.17.1",
@@ -40,9 +40,9 @@
     "vue-meta": "^2.3.3",
     "vue-router": "next",
     "vue-template-compiler": "^2.6.11",
-    "vuex": "^3.1.3",
-    "webpack": "^4.42.1",
-    "webpack-dev-server": "^3.10.3",
+    "vuex": "^3.4.0",
+    "webpack": "^4.43.0",
+    "webpack-dev-server": "^3.11.0",
     "webpackbar": "^4.0.0"
   }
 }

examples/vue-router/app.js

@@ -1,10 +1,10 @@
-import { createApp, defineComponent, reactive, toRefs, h } from 'vue'
+import { createApp, defineComponent, reactive, inject, markRaw, toRefs, h, customRef, watch, watchEffect } from 'vue'
 import { createRouter, createWebHistory } from 'vue-router'
 import Metainfo from '../next/Metainfo.vue'
 import { createMeta, useMeta } from '../next'
 import About from './about.vue'
 
-let metaUpdated = 'no'
+const metaUpdated = 'no'
 
 const ChildComponent = defineComponent({
   name: 'child-component',
@@ -16,19 +16,8 @@ const ChildComponent = defineComponent({
   <h3>You're looking at the <strong>{{ page }}</strong> page</h3>
   <p>Has metaInfo been updated due to navigation? {{ metaUpdated }}</p>
 </div>`,
-  metaInfo () {
-    return {
-      title: `${this.page} - ${this.date && this.date.toTimeString()}`,
-      bodyAttrs: {
-        class: 'child-component'
-      },
-      afterNavigation () {
-        metaUpdated = 'yes'
-      }
-    }
-  },
   created () {
-    //console.log(this)
+    // console.log(this)
   },
   setup () {
     const state = reactive({
@@ -36,7 +25,16 @@ const ChildComponent = defineComponent({
       metaUpdated
     })
 
+    const metainfo = useMeta({
+      charset: 'utf16',
+      description: 'Description 2',
+      og: {
+        title: 'Og Title 2'
+      }
+    })
+
     return {
+      metainfo,
       ...toRefs(state)
     }
   }
@@ -53,7 +51,7 @@ function view (page) {
 
 const App = {
   setup () {
-    const metainfo = useMeta({
+    /* const metainfo = useMeta({
       base: { href: '/vue-router', target: '_blank' },
       charset: 'utf8',
       title: 'My Title',
@@ -104,7 +102,24 @@ const App = {
       }
     })
 
-    setTimeout(() => (metainfo.title = 'My Updated Title'), 2000)
+    setTimeout(() => (metainfo.title = 'My Updated Title'), 2000) */
+
+    const meta = useMeta({
+      charset: 'utf8',
+      title: 'Title 1',
+      og: {
+        title: 'Og Title 1'
+      }
+    })
+
+    setTimeout(() => (meta.charset = 'utf17'), 2000)
+    setTimeout(() => (meta.og = { title: 'Updated Og Title 1' }), 3000) // TODO: fix
+
+    const metainfo = inject('metainfo')
+
+    watch(metainfo, (newValue, oldValue) => {
+      console.log('UPDATE', newValue)
+    })
 
     return {
       metainfo
@@ -131,15 +146,21 @@ const App = {
   `
 }
 
-const router = createRouter({
-  history: createWebHistory('/vue-router'),
-  routes: [
-    { name: 'home', path: '/', component: view('home') },
-    { name: 'about', path: '/about', component: About }
-  ]
-})
+function decisionMaker5000000 (options) {
+  let theChosenOne
+
+  for (const option of options) {
+    if (!theChosenOne || theChosenOne.vm.id < option.vm.id) {
+      theChosenOne = option
+    }
+  }
+
+  console.log(theChosenOne.value)
+  return theChosenOne.value
+}
 
 const meta = createMeta({
+  resolver: decisionMaker5000000,
   config: {
     esi: {
       group: true,
@@ -153,6 +174,14 @@ const meta = createMeta({
   }
 })
 
+const router = createRouter({
+  history: createWebHistory('/vue-router'),
+  routes: [
+    { name: 'home', path: '/', component: view('home') },
+    { name: 'about', path: '/about', component: About }
+  ]
+})
+
 const app = createApp(App)
 app.component('metainfo', Metainfo)
 app.use(router)