wip - load liquidDoc values from snippet under hover

todo - simplify / fix the types
todo - handle files with no value
todo - optimize the way we store the liquiddoc values

Author: jamesmengo

packages/theme-language-server-common/src/hover/HoverProvider.ts

@@ -41,6 +41,7 @@ export class HoverProvider {
     readonly getSettingsSchemaForURI: GetThemeSettingsSchemaForURI = async () => [],
     readonly getLiquidDocDefinitionsForURI: (
       uri: string,
+      snippetName: string,
     ) => Promise<LiquidDocDefinitionMap> = async () => mock_data,
   ) {
     const typeSystem = new TypeSystem(

packages/theme-language-server-common/src/hover/providers/RenderSnippetHoverProvider.ts

@@ -9,7 +9,10 @@ import { BaseHoverProvider } from '../BaseHoverProvider';
 
 export class RenderSnippetHoverProvider implements BaseHoverProvider {
   constructor(
-    private getLiquidDocDefinitionsForURI: (uri: string) => Promise<LiquidDocDefinitionMap>,
+    private getLiquidDocDefinitionsForURI: (
+      uri: string,
+      snippetName: string,
+    ) => Promise<LiquidDocDefinitionMap>,
   ) {}
 
   async hover(
@@ -27,7 +30,10 @@ export class RenderSnippetHoverProvider implements BaseHoverProvider {
     }
 
     const snippetName = currentNode.value.replace(/['"]/g, '');
-    const docDefinitions = await this.getLiquidDocDefinitionsForURI(params.textDocument.uri);
+    const docDefinitions = await this.getLiquidDocDefinitionsForURI(
+      params.textDocument.uri,
+      snippetName,
+    );
     const snippetDefinition = docDefinitions[snippetName];
 
     if (!snippetDefinition) {

packages/theme-language-server-common/src/server/startServer.ts

@@ -3,6 +3,9 @@ import {
   FileTuple,
   findRoot as findConfigFileRoot,
   isError,
+  LiquidDocDefinition,
+  LiquidDocDefinitionMap,
+  LiquidDocParameter,
   makeFileExists,
   makeGetDefaultSchemaTranslations,
   makeGetDefaultTranslations,
@@ -12,6 +15,7 @@ import {
   path,
   recursiveReadDirectory,
   SourceCodeType,
+  visit,
 } from '@shopify/theme-check-common';
 import {
   Connection,
@@ -169,6 +173,56 @@ export function startServer(
     return getDefaultSchemaTranslations();
   };
 
+  //  todo - put this stuff in theme check common
+  const getLiquidDocDefinitionsForURI = async (
+    uri: string,
+    snippetName: string,
+  ): Promise<LiquidDocDefinitionMap> => {
+    const rootUri = await findThemeRootURI(uri);
+    const snippetURI = path.join(rootUri, 'snippets', `${snippetName}.liquid`);
+    const snippet = documentManager.get(snippetURI);
+
+    if (!snippet || isError(snippet)) return {};
+
+    if (snippet.type !== SourceCodeType.LiquidHtml) return {};
+
+    // read the snippet AST
+    const ast = snippet.ast;
+    if (isError(ast)) return {};
+
+    const docDefinitions = visit<SourceCodeType.LiquidHtml, LiquidDocDefinition>(ast, {
+      LiquidRawTag: (node, _ancestors) => {
+        if (node.name === 'doc') {
+          const body = node.body;
+          const paramNodes = visit<SourceCodeType.LiquidHtml, LiquidDocParameter>(body, {
+            LiquidDocParamNode: (node) => {
+              return [
+                {
+                  name: node.paramName.value,
+                  description: node.paramDescription.value,
+                  type: node.paramType.value,
+                },
+              ];
+            },
+          });
+          return {
+            name: snippetName,
+            description: 'placeholder',
+            parameters: paramNodes,
+          };
+        }
+      },
+    });
+
+    const returnVal: LiquidDocDefinitionMap = {
+      [snippetName]: {
+        name: snippetName,
+        parameters: docDefinitions[0].parameters,
+      },
+    };
+    return returnVal;
+  };
+
   const snippetFilter = ([uri]: FileTuple) => /\.liquid$/.test(uri) && /snippets/.test(uri);
   const getSnippetNamesForURI: GetSnippetNamesForURI = async (uri: string) => {
     const rootUri = await findThemeRootURI(uri);
@@ -249,6 +303,7 @@ export function startServer(
     getMetafieldDefinitions,
     getTranslationsForURI,
     getThemeSettingsSchemaForURI,
+    getLiquidDocDefinitionsForURI,
   );
 
   const executeCommandProvider = new ExecuteCommandProvider(