Better header editor and added completion data

src-web/components/HeaderEditor.tsx

@@ -0,0 +1,52 @@
+import { charsets } from '../lib/data/charsets';
+import { connections } from '../lib/data/connections';
+import { encodings } from '../lib/data/encodings';
+import { headerNames } from '../lib/data/headerNames';
+import { mimeTypes } from '../lib/data/mimetypes';
+import type { HttpRequest } from '../lib/models';
+import type { GenericCompletionConfig } from './core/Editor/genericCompletion';
+import type { PairEditorProps } from './core/PairEditor';
+import { PairEditor } from './core/PairEditor';
+
+type Props = {
+  headers: HttpRequest['headers'];
+  onChange: (headers: HttpRequest['headers']) => void;
+};
+
+export function HeaderEditor({ headers, onChange }: Props) {
+  return (
+    <PairEditor
+      pairs={headers}
+      onChange={onChange}
+      nameAutocomplete={nameAutocomplete}
+      valueAutocomplete={valueAutocomplete}
+      namePlaceholder="Header-Name"
+    />
+  );
+}
+
+const MIN_MATCH = 3;
+
+const headerOptionsMap: Record<string, string[]> = {
+  'content-type': mimeTypes,
+  accept: ['*/*', ...mimeTypes],
+  'accept-encoding': encodings,
+  connection: connections,
+  'accept-charset': charsets,
+};
+
+const valueAutocomplete = (headerName: string): GenericCompletionConfig | undefined => {
+  const name = headerName.toLowerCase().trim();
+  const options: GenericCompletionConfig['options'] =
+    headerOptionsMap[name]?.map((o, i) => ({
+      label: o,
+      type: 'constant',
+      boost: 99 - i, // Max boost is 99
+    })) ?? [];
+  return { minMatch: MIN_MATCH, options };
+};
+
+const nameAutocomplete: PairEditorProps['nameAutocomplete'] = {
+  minMatch: MIN_MATCH,
+  options: headerNames.map((t, i) => ({ label: t, type: 'constant', boost: 99 - i })),
+};