From 9e4442fdf47b21650ffa493b8869605bfd79a2b2 Mon Sep 17 00:00:00 2001
From: "yanlong.wang" <yanlong.wang@naiver.org>
Date: Tue, 10 Sep 2024 15:37:44 +0800
Subject: [PATCH] wip

---
 backend/functions/src/services/html-to-md.ts | 126 +++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 backend/functions/src/services/html-to-md.ts

diff --git a/backend/functions/src/services/html-to-md.ts b/backend/functions/src/services/html-to-md.ts
new file mode 100644
index 0000000..93f75fc
--- /dev/null
+++ b/backend/functions/src/services/html-to-md.ts
@@ -0,0 +1,126 @@
+import { AsyncService, AutoCastable, Prop } from 'civkit';
+import { Logger } from '../shared/services/logger';
+
+const pMdAstToMarkdown = import('mdast-util-to-markdown');
+const pUnistVisitParents = import('unist-util-visit-parents');
+
+
+export class HTMLtoMarkdown extends AsyncService {
+
+    mdAstToMarkdown!: Awaited<typeof pMdAstToMarkdown>;
+    unistVisitParents!: Awaited<typeof pUnistVisitParents>;
+
+    constructor(
+        protected logger: Logger,
+    ) {
+        super(...arguments);
+    }
+
+
+    override async init() {
+        await this.dependencyReady();
+
+        this.mdAstToMarkdown = await pMdAstToMarkdown;
+        this.unistVisitParents = await pUnistVisitParents;
+
+        this.emit('ready');
+    }
+
+}
+
+
+class MarkdownASTNode extends AutoCastable {
+    @Prop({
+        required: true
+    })
+    type!: string;
+}
+
+class MDCode extends MarkdownASTNode {
+    @Prop({
+        default: 'code'
+    })
+    override type!: 'code';
+
+    @Prop()
+    lang?: string;
+
+    @Prop({
+        required: true,
+        default: ''
+    })
+    value!: string;
+}
+
+class MDHTML extends MarkdownASTNode {
+    @Prop({
+        default: 'html'
+    })
+    override type!: 'html';
+
+    @Prop({
+        required: true,
+        default: ''
+    })
+    value!: string;
+}
+
+
+class MarkdownASTParentNode extends MarkdownASTNode {
+
+    @Prop({
+        default: [],
+        arrayOf: MarkdownASTNode
+    })
+    children!: MarkdownASTNode[];
+}
+
+class MDHeading extends MarkdownASTParentNode {
+    @Prop({
+        default: 'heading'
+    })
+    override type!: 'heading';
+
+    @Prop({
+        required: true,
+        type: Number,
+        validate(v: number) {
+            return v >=1 && v<=6
+        }
+    })
+    level!: 1|2|3|4|5|6;
+}
+class MDList extends MarkdownASTParentNode {
+    @Prop({
+        default: 'list'
+    })
+    override type!: 'list';
+
+    @Prop({
+        default: false,
+    })
+    ordered!: boolean;
+}
+
+
+class MDLiteral extends MarkdownASTNode {
+    @Prop({
+        default: 'literal'
+    })
+    override type!: 'literal';
+
+    @Prop({
+        required: true,
+        default: ''
+    })
+    value!: string;
+}
+
+
+
+
+export class HTMLToMarkdownJob {
+
+
+
+}