From 94b7f77f8fffc738766e45dd3e9daf0559e0b0bc Mon Sep 17 00:00:00 2001
From: lawvs <18554747+lawvs@users.noreply.github.com>
Date: Mon, 18 Jul 2022 19:09:34 +0800
Subject: [PATCH] feat: basic view api

---
 .../src/recast-block/types/view.ts            |  14 ++-
 .../editor-core/src/recast-block/view.ts      | 113 ++++++++++++++++++
 2 files changed, 126 insertions(+), 1 deletion(-)
 create mode 100644 libs/components/editor-core/src/recast-block/view.ts

diff --git a/libs/components/editor-core/src/recast-block/types/view.ts b/libs/components/editor-core/src/recast-block/types/view.ts
index b5e2839acd..01f986c55f 100644
--- a/libs/components/editor-core/src/recast-block/types/view.ts
+++ b/libs/components/editor-core/src/recast-block/types/view.ts
@@ -10,7 +10,15 @@ export enum RecastScene {
     Whiteboard = 'whiteboard',
 }
 
+export type RecastViewId = string & {
+    /**
+     * Type differentiator only.
+     */
+    readonly __isViewId: true;
+};
+
 type BaseView = {
+    id: RecastViewId;
     name: string;
     // TODO: design this
     // order?: string[];
@@ -25,4 +33,8 @@ export interface KanbanView extends BaseView {
     groupBy: RecastPropertyId;
 }
 
-export type RecastView = PageView | KanbanView;
+export interface TableView extends BaseView {
+    type: RecastScene.Kanban;
+}
+
+export type RecastView = PageView | KanbanView | TableView;
diff --git a/libs/components/editor-core/src/recast-block/view.ts b/libs/components/editor-core/src/recast-block/view.ts
new file mode 100644
index 0000000000..95828b9782
--- /dev/null
+++ b/libs/components/editor-core/src/recast-block/view.ts
@@ -0,0 +1,113 @@
+import { nanoid } from 'nanoid';
+import { useCallback } from 'react';
+import { useRecastBlock } from './Context';
+import { META_VIEWS_KEY, RecastScene, RecastView, RecastViewId } from './types';
+
+/**
+ * Generate a unique id for a recast view
+ */
+const genViewId = () => nanoid(16) as RecastViewId; // This is a safe type cast
+
+const DEFAULT_VIEWS: RecastView[] = [
+    {
+        id: genViewId(),
+        name: 'ToDo List',
+        type: RecastScene.Page,
+    },
+    {
+        id: genViewId(),
+        name: 'Kanban',
+        type: RecastScene.Kanban,
+    },
+];
+
+export const useRecastView = () => {
+    const recastBlock = useRecastBlock();
+    const recastViews = recastBlock.getProperty(META_VIEWS_KEY) ?? [];
+
+    const getView = useCallback(
+        (id: RecastViewId) => {
+            const view = recastViews.find(v => v.id === id);
+            if (!view) {
+                throw new Error('Failed to find view with id ' + id);
+            }
+            return view;
+        },
+        [recastViews]
+    );
+
+    const setViews = useCallback(
+        (views: RecastView[]) => {
+            return recastBlock.setProperty(META_VIEWS_KEY, views);
+        },
+        [recastBlock]
+    );
+
+    const addView = useCallback(
+        async (newView: Omit<RecastView, 'id'>) => {
+            await setViews([
+                ...recastViews,
+                { ...newView, id: genViewId() } as RecastView,
+            ]);
+        },
+        [recastViews, setViews]
+    );
+
+    const updateView = useCallback(
+        async (newView: RecastView) => {
+            const idx = recastViews.findIndex(v => v.id === newView.id);
+            if (!idx) {
+                throw new Error('Failed to find view with id ' + newView.id);
+            }
+            await setViews([
+                ...recastViews.slice(0, idx),
+                newView,
+                ...recastViews.slice(idx + 1),
+            ]);
+        },
+        [recastViews, setViews]
+    );
+
+    const renameView = useCallback(
+        async (id: RecastViewId, newName: string) => {
+            const curView = getView(id);
+            curView.name = newName;
+            await setViews(recastViews);
+        },
+        [getView, recastViews, setViews]
+    );
+
+    const removeView = useCallback(
+        async (id: RecastViewId) => {
+            await setViews(recastViews.filter(v => v.id !== id));
+        },
+        [recastViews, setViews]
+    );
+
+    /**
+     * @deprecated Use updateView instead
+     */
+    const changeScene = useCallback(
+        async (
+            id: RecastViewId,
+            newScene: RecastScene.Page | RecastScene.Kanban
+        ) => {
+            const curView = getView(id);
+            if (curView.type === newScene) {
+                return;
+            }
+            curView.type = newScene;
+            await setViews(recastViews);
+        },
+        [getView, recastViews, setViews]
+    );
+
+    return {
+        recastViews,
+        addView,
+        updateView,
+        renameView,
+        removeView,
+        // TODO API to reorder views
+    };
+};