From ace258079ea820972d643224cd15e07e3474c3bf Mon Sep 17 00:00:00 2001
From: Yanzhen Yu <yanzhen@smartx.com>
Date: Sat, 6 Nov 2021 10:08:21 +0800
Subject: [PATCH] implement virtual example plugin This vite plugin will read
 from the examples directory and compose all the example manifests into a
 JSON.

---
 examples/box/index.json         | 117 ++++++++++++++++++++++++++++++++
 packages/runtime/index.html     |  20 ++++++
 packages/runtime/vite.config.ts |  41 ++++++++++-
 3 files changed, 177 insertions(+), 1 deletion(-)
 create mode 100644 examples/box/index.json
 create mode 100644 packages/runtime/index.html

diff --git a/examples/box/index.json b/examples/box/index.json
new file mode 100644
index 00000000..417513bd
--- /dev/null
+++ b/examples/box/index.json
@@ -0,0 +1,117 @@
+{
+  "app": {
+    "version": "example/v1",
+    "metadata": { "name": "box", "description": "box" },
+    "spec": {
+      "components": [
+        {
+          "id": "test_btn",
+          "type": "plain/v1/button",
+          "properties": { "text": { "raw": "Click", "format": "plain" } },
+          "traits": [
+            {
+              "type": "core/v1/state",
+              "properties": { "key": "count", "initialValue": 0 }
+            },
+            {
+              "type": "core/v1/event",
+              "properties": {
+                "handlers": [
+                  {
+                    "type": "onClick",
+                    "componentId": "test_btn",
+                    "method": {
+                      "name": "setValue",
+                      "parameters": {
+                        "key": "count",
+                        "value": "{{ test_btn.count > 0 ? 0 : test_btn.count + 1 }}"
+                      }
+                    },
+                    "wait": {},
+                    "disabled": false
+                  }
+                ]
+              }
+            }
+          ]
+        },
+        {
+          "id": "box_container",
+          "type": "chakra_ui/v1/box",
+          "properties": {
+            "my": 8,
+            "p": 8,
+            "display": "flex",
+            "bg": "{{ test_btn.count % 2 ? 'teal' : 'white' }}",
+            "border": "1px solid",
+            "borderColor": "{{ test_btn.count % 2 ? 'white' : 'teal' }}",
+            "borderRadius": 8,
+            "h": 200
+          },
+          "traits": []
+        },
+        {
+          "id": "box_child_1",
+          "type": "chakra_ui/v1/box",
+          "properties": {
+            "mr": 4,
+            "flex": 1,
+            "bg": "{{ test_btn.count % 2 ? 'white' : 'teal' }}",
+            "color": "{{ test_btn.count % 2 ? 'teal' : 'white' }}",
+            "display": "flex",
+            "alignItems": "center",
+            "justifyContent": "center",
+            "borderRadius": 4
+          },
+          "traits": [
+            {
+              "type": "core/v1/slot",
+              "properties": { "container": { "id": "box_container", "slot": "content" } }
+            }
+          ]
+        },
+        {
+          "id": "text",
+          "type": "core/v1/text",
+          "properties": { "value": { "raw": "in box child 1", "format": "plain" } },
+          "traits": [
+            {
+              "type": "core/v1/slot",
+              "properties": { "container": { "id": "box_child_1", "slot": "content" } }
+            }
+          ]
+        },
+        {
+          "id": "box_child_2",
+          "type": "chakra_ui/v1/box",
+          "properties": {
+            "flex": 1,
+            "bg": "{{ test_btn.count % 2 ? 'white' : 'teal' }}",
+            "color": "{{ test_btn.count % 2 ? 'teal' : 'white' }}",
+            "display": "flex",
+            "alignItems": "center",
+            "justifyContent": "center",
+            "borderRadius": 4
+          },
+          "traits": [
+            {
+              "type": "core/v1/slot",
+              "properties": { "container": { "id": "box_container", "slot": "content" } }
+            }
+          ]
+        },
+        {
+          "id": "text",
+          "type": "core/v1/text",
+          "properties": { "value": { "raw": "in box child 2", "format": "plain" } },
+          "traits": [
+            {
+              "type": "core/v1/slot",
+              "properties": { "container": { "id": "box_child_2", "slot": "content" } }
+            }
+          ]
+        }
+      ]
+    }
+  }
+}
diff --git a/packages/runtime/index.html b/packages/runtime/index.html
new file mode 100644
index 00000000..bd4ce2dc
--- /dev/null
+++ b/packages/runtime/index.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html lang="en" style="overflow: hidden">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>meta-ui runtime examples</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module">
+      import renderApp from './src/main.tsx';
+      import examples from '@example.json';
+      console.log(examples);
+
+      const example = examples[0];
+
+      renderApp(example.value.app);
+    </script>
+  </body>
+</html>
diff --git a/packages/runtime/vite.config.ts b/packages/runtime/vite.config.ts
index e4cd6c75..277587b1 100644
--- a/packages/runtime/vite.config.ts
+++ b/packages/runtime/vite.config.ts
@@ -1,5 +1,43 @@
-import { defineConfig } from 'vite';
+import { defineConfig, Plugin } from 'vite';
 import react from '@vitejs/plugin-react';
+import fs from 'fs';
+import path from 'path';
+
+function virtualExamplePlugin(): Plugin {
+  const virtualFileId = '@example.json';
+
+  const exampleDir = path.join(__dirname, '../../examples');
+  const examples = [];
+
+  function walk(dirOrFile: string, frags: string[]) {
+    if (fs.statSync(dirOrFile).isDirectory()) {
+      for (const subDir of fs.readdirSync(dirOrFile)) {
+        frags.push(subDir);
+        walk(path.join(dirOrFile, subDir), frags);
+      }
+    } else {
+      const value = JSON.parse(fs.readFileSync(dirOrFile, 'utf-8'));
+      const name = frags.filter(frag => frag !== 'index.json').join('_');
+      examples.push({ name, value });
+    }
+  }
+
+  walk(exampleDir, []);
+
+  return {
+    name: 'virtual-example-plugin',
+    resolveId(id) {
+      if (id === virtualFileId) {
+        return virtualFileId;
+      }
+    },
+    load(id) {
+      if (id === virtualFileId) {
+        return JSON.stringify(examples);
+      }
+    },
+  };
+}
 
 // https://vitejs.dev/config/
 export default defineConfig({
@@ -18,6 +56,7 @@ export default defineConfig({
         ],
       },
     }),
+    virtualExamplePlugin(),
   ],
   define: {
     // https://github.com/satya164/react-simple-code-editor/issues/86