Prototype of making the new threads via generic interfaces

src/components/documents/GenericEditForm.tsx

@@ -1,33 +1,30 @@
 import { AutoSaveTextarea } from "@/components/AutoSaveTextarea";
 import { pb } from "@/lib/pocketbase";
-import type { AnyDocument, Location } from "@/lib/types";
+import { getDocumentType, type AnyDocument } from "@/lib/types";
 import { useDocumentCache } from "@/context/document/hooks";
+import {
+  getFieldsForType,
+  type DocumentField,
+  type FieldType,
+} from "@/lib/fields";
 
 export type GenericFieldType = "multiline" | "singleline" | "checkbox";
 
 export type Props<T extends AnyDocument> = {
   doc: T;
-  fields: { [K in keyof T["data"]]: GenericFieldType };
 };
 
-export const GenericEditForm = <T extends AnyDocument>({
-  doc,
-  fields,
-}: Props<T>) => {
+export const GenericEditForm = <T extends AnyDocument>({ doc }: Props<T>) => {
+  const docType = getDocumentType(doc) as T["type"];
+  const fields = getFieldsForType(docType);
+
   return (
     <div className="">
       {
         // The type checker seems to lose the types when using Object.entries here.
-        Object.entries(fields).map(
-          ([fieldName, fieldType]: [string, unknown]) => (
-            <GenericEditFormField
-              key={fieldName}
-              doc={doc}
-              fieldName={fieldName as keyof T["data"]}
-              fieldType={fieldType as GenericFieldType}
-            />
-          ),
-        )
+        fields.map((documentField) => (
+          <GenericEditFormField doc={doc} field={documentField} />
+        ))
       }
     </div>
   );
@@ -35,51 +32,46 @@ export const GenericEditForm = <T extends AnyDocument>({
 
 const GenericEditFormField = <T extends AnyDocument>({
   doc,
-  fieldName,
-  fieldType,
+  field,
 }: {
   doc: T;
-  fieldName: keyof T["data"];
-  fieldType: GenericFieldType;
+  field: DocumentField<T["type"], FieldType>;
 }) => {
   const { dispatch } = useDocumentCache();
 
   // The type checker really doesn't like indexing into this type implicitly, so we'll store it in a temporary to give it the right hints.
   const data = doc.data as T["data"];
 
-  async function saveField(value: string) {
+  async function saveField(value: string | boolean) {
     const updated: T = await pb.collection("documents").update(doc.id, {
-      data: {
-        ...doc.data,
-        [fieldName]: value,
-      },
+      data: field.setter(value, doc.data),
     });
     dispatch({ type: "setDocument", doc: updated });
   }
 
-  switch (fieldType) {
-    case "multiline":
+  switch (field.fieldType) {
+    case "longText":
       return (
         <AutoSaveTextarea
           multiline={true}
-          value={data[fieldName] as string}
+          value={field.getter(data) as string}
           onSave={saveField}
         />
       );
-    case "singleline":
+    case "shortText":
       return (
         <AutoSaveTextarea
           multiline={false}
-          value={data[fieldName] as string}
+          value={field.getter(data) as string}
           onSave={saveField}
         />
       );
-    case "checkbox":
+    case "toggle":
       return (
         <input
           type="checkbox"
-          checked={data[fieldName] as boolean}
-          onChange={(e) => saveField(e.target.value)}
+          checked={!!field.getter(data)}
+          onChange={(e) => saveField(!!e.target.value)}
           className="accent-emerald-500 w-5 h-5"
         />
       );

src/lib/fields.ts

@@ -0,0 +1,88 @@
+import {
+  type DocumentData,
+  type DocumentsByType,
+  type DocumentType,
+} from "./types";
+
+export type FieldType = "shortText" | "longText" | "toggle";
+
+export type ValueForFieldType<T extends FieldType> = {
+  shortText: string;
+  longText: string;
+  toggle: boolean;
+}[T];
+
+export type DocumentField<D extends DocumentType, F extends FieldType> = {
+  name: string;
+  fieldType: F;
+  getter: (doc: DocumentData<D>) => ValueForFieldType<F>;
+  setter: (
+    value: ValueForFieldType<F>,
+    doc: DocumentData<D>,
+  ) => DocumentData<D>;
+};
+
+const simpleField = <D extends DocumentType, F extends FieldType>(
+  name: string,
+  key: keyof DocumentData<D>,
+  fieldType: F,
+): DocumentField<D, F> => ({
+  name,
+  fieldType,
+  getter: (doc) => doc[key] as unknown as ValueForFieldType<F>,
+  setter: (value, doc) => ({ ...doc, [key]: value }),
+});
+
+const simpleFields = <D extends DocumentType>(
+  fields: Record<string, [keyof DocumentData<D>, FieldType]>,
+): DocumentField<D, FieldType>[] =>
+  Object.entries(fields).map(([name, [key, fieldType]]) =>
+    simpleField(name, key, fieldType),
+  );
+
+export function getFieldsForType<D extends DocumentType>(
+  docType: D,
+): DocumentField<D, FieldType>[] {
+  switch (docType) {
+    case "front":
+      return simpleFields<"front">({
+        Name: ["name", "shortText"],
+        Description: ["description", "longText"],
+        Resolved: ["resolved", "toggle"],
+      });
+    case "location":
+      return [
+        simpleField("Name", "name", "shortText"),
+        simpleField("Description", "description", "longText"),
+      ];
+    case "monster":
+      return [simpleField("Name", "name", "shortText")];
+    case "npc":
+      return [
+        simpleField("Name", "name", "shortText"),
+        simpleField("Description", "description", "longText"),
+      ];
+    case "scene":
+      return [simpleField("Text", "text", "longText")];
+    case "secret":
+      return [
+        simpleField("Discovered", "discovered", "toggle"),
+        simpleField("Text", "text", "shortText"),
+      ];
+    case "session":
+      return [
+        simpleField("Name", "name", "shortText"),
+        simpleField("Strong Start", "strongStart", "longText"),
+      ];
+    case "thread":
+      return [
+        simpleField("Resolved", "resolved", "toggle"),
+        simpleField("Text", "text", "shortText"),
+      ];
+    case "treasure":
+      return [
+        simpleField("Discovered", "discovered", "toggle"),
+        simpleField("Text", "text", "shortText"),
+      ];
+  }
+}

src/lib/types.ts

@@ -75,11 +75,6 @@ export type DocumentType =
   | "thread"
   | "treasure";
 
-export type DocumentData<Type extends DocumentType, Data> = {
-  type: Type;
-  data: Data;
-};
-
 export type Document<Type extends DocumentType, Data> = RecordModel & {
   id: DocumentId;
   collectionName: typeof CollectionIds.Documents;
@@ -102,6 +97,23 @@ export type AnyDocument =
   | Thread
   | Treasure;
 
+export type DocumentsByType = {
+  front: Front;
+  location: Location;
+  monster: Monster;
+  npc: Npc;
+  scene: Scene;
+  secret: Secret;
+  session: Session;
+  thread: Thread;
+  treasure: Treasure;
+};
+
+export type DocumentData<Type extends DocumentType> =
+  DocumentsByType[Type]["data"];
+
+export type GetDocumentType<D extends AnyDocument> = D["type"];
+
 export function getDocumentType(doc: AnyDocument): DocumentType {
   return doc.type;
 }