Add source and hover information to error output

For the CLI, only the source (i.e. title property) is added.
FOr the CI, the hover information (title, description, examples) are
added and formatted according to YAMLHover.

github-action/index.ts

@@ -2,8 +2,14 @@ import * as core from '@actions/core';
 import * as path from 'path';
 import { YamlVersion } from 'yaml-language-server/out/server/src/languageservice/parser/yamlParser07';
 import { SchemaMapping, validateDirectory } from '../src';
+import { MarkupContent } from 'vscode-languageserver-types';
+
+import { marked } from 'marked';
+import { markedTerminal } from 'marked-terminal';
 
 async function run() {
+    marked.use(markedTerminal() as any);
+
     let rootPath = process.env['GITHUB_WORKSPACE'] as string;
     let relativeToRoot = core.getInput('root', { trimWhitespace: true });
     if (relativeToRoot) {
@@ -29,17 +35,19 @@ async function run() {
     if (results && results.length > 0) {
         for (const result of results) {
             for (const error of result.error) {
+                const { diag, hover } = error;
+                const hoverMessage = (hover && MarkupContent.is(hover.contents)) ? `\n\n${marked(hover.contents.value)}` : ''
+
+
                 core.error(
-                    `${result.filePath}:${error.range.start.line + 1}:${error.range.start.character + 1}: ${
-                        error.message
-                    }`,
+                    diag.message + hoverMessage,
                     {
-                        title: error.message,
+                        title: `${diag.message}${diag.source ? ' ' + diag.source + '.' : ''}`,
                         file: result.filePath,
-                        startLine: error.range.start.line + 1,
-                        endLine: error.range.end.line + 1,
-                        startColumn: error.range.start.character,
-                        endColumn: error.range.end.character,
+                        startLine: diag.range.start.line + 1,
+                        endLine: diag.range.end.line + 1,
+                        startColumn: diag.range.start.character,
+                        endColumn: diag.range.end.character,
                     },
                 );
             }

github-action/webpack.config.js

@@ -24,7 +24,7 @@ module.exports = {
     ),
   ],
   resolve: {
-    extensions: [ '.ts', '.js' ],
+    extensions: [ '.ts', '.js', '.json' ],
   },
   output: {
     filename: 'index.js',

package.json

@@ -42,8 +42,11 @@
     "@actions/core": "^1.10.0",
     "@types/glob": "^7.1.4",
     "@types/jest": "^27.0.2",
+    "@types/marked-terminal": "^6.0.1",
     "@types/node": "^16.9.4",
     "jest": "^27.2.1",
+    "marked": "^11.1.1",
+    "marked-terminal": "^6.2.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.4.1",
     "rimraf": "^3.0.2",