Better header editor and added completion data

src-web/components/GraphQLEditor.tsx

@@ -0,0 +1,73 @@
+import { formatSdl } from 'format-graphql';
+import { useMemo } from 'react';
+import { useUniqueKey } from '../hooks/useUniqueKey';
+import { Divider } from './core/Divider';
+import type { EditorProps } from './core/Editor';
+import { Editor } from './core/Editor';
+
+type Props = Pick<EditorProps, 'heightMode' | 'onChange' | 'defaultValue' | 'className'>;
+
+interface GraphQLBody {
+  query: string;
+  variables?: Record<string, string | number | boolean | null>;
+  operationName?: string;
+}
+
+export function GraphQLEditor({ defaultValue, onChange, ...extraEditorProps }: Props) {
+  const queryKey = useUniqueKey();
+  const { query, variables } = useMemo<GraphQLBody>(() => {
+    if (!defaultValue) {
+      return { query: '', variables: {} };
+    }
+    try {
+      const p = JSON.parse(defaultValue ?? '{}');
+      const query = p.query ?? '';
+      const variables = p.variables;
+      const operationName = p.operationName;
+      return { query, variables, operationName };
+    } catch (err) {
+      return { query: 'failed to parse' };
+    }
+  }, [defaultValue]);
+
+  const handleChange = (b: GraphQLBody) => {
+    onChange?.(JSON.stringify(b, null, 2));
+  };
+
+  const handleChangeQuery = (query: string) => {
+    handleChange({ query, variables });
+  };
+
+  const handleChangeVariables = (variables: string) => {
+    try {
+      handleChange({ query, variables: JSON.parse(variables) });
+    } catch (e) {
+      // Meh, not much we can do here
+    }
+  };
+
+  return (
+    <div className="pb-1 h-full grid grid-rows-[minmax(0,100%)_auto_auto_minmax(0,auto)]">
+      <Editor
+        key={queryKey.key}
+        heightMode="auto"
+        defaultValue={query ?? ''}
+        onChange={handleChangeQuery}
+        contentType="application/graphql"
+        format={formatSdl}
+        placeholder={`query { }`}
+        {...extraEditorProps}
+      />
+      <Divider />
+      <p className="pt-1 text-gray-500 text-sm">Variables</p>
+      <Editor
+        useTemplating
+        heightMode="auto"
+        defaultValue={JSON.stringify(variables, null, 2)}
+        onChange={handleChangeVariables}
+        contentType="application/json"
+        {...extraEditorProps}
+      />
+    </div>
+  );
+}