changes

src/store/useBook.ts

@@ -1,6 +1,15 @@
 import { create } from "zustand";
 import type { JSONContent } from "@tiptap/core";
-import { type Book, type BookMetadata, type BookSettings, createChapter } from "../model/book";
+import {
+  type Book,
+  type BookMetadata,
+  type BookSettings,
+  type Cover,
+  createChapter,
+  normalizeBook,
+} from "../model/book";
+
+export const COVER_ID = "__cover__";
 
 interface BookState {
   book: Book | null;
@@ -12,8 +21,10 @@ interface BookState {
   setChapterContent: (id: string, content: JSONContent) => void;
   setChapterTitle: (id: string, title: string) => void;
   addChapter: () => void;
+  moveChapter: (from: number, to: number) => void;
   setMetadata: (patch: Partial<BookMetadata>) => void;
   setSettings: (patch: Partial<BookSettings>) => void;
+  setCover: (patch: Partial<Cover>) => void;
   markSaved: () => void;
 }
 
@@ -21,7 +32,10 @@ export const useBook = create<BookState>((set) => ({
   book: null,
   activeChapterId: "",
   dirty: false,
-  openBook: (book) => set({ book, activeChapterId: book.chapters[0]?.id ?? "", dirty: false }),
+  openBook: (book) => {
+    const normalized = normalizeBook(book);
+    set({ book: normalized, activeChapterId: normalized.chapters[0]?.id ?? "", dirty: false });
+  },
   closeBook: () => set({ book: null, activeChapterId: "", dirty: false }),
   setActiveChapter: (id) => set({ activeChapterId: id }),
   setChapterContent: (id, content) =>
@@ -42,9 +56,20 @@ export const useBook = create<BookState>((set) => ({
       const chapter = createChapter();
       return { activeChapterId: chapter.id, dirty: true, book: { ...s.book, chapters: [...s.book.chapters, chapter] } };
     }),
+  moveChapter: (from, to) =>
+    set((s) => {
+      if (!s.book || from === to) return {};
+      const chapters = [...s.book.chapters];
+      if (from < 0 || from >= chapters.length || to < 0 || to >= chapters.length) return {};
+      const [moved] = chapters.splice(from, 1);
+      chapters.splice(to, 0, moved);
+      return { dirty: true, book: { ...s.book, chapters } };
+    }),
   setMetadata: (patch) =>
     set((s) => (s.book ? { dirty: true, book: { ...s.book, metadata: { ...s.book.metadata, ...patch } } } : {})),
   setSettings: (patch) =>
     set((s) => (s.book ? { dirty: true, book: { ...s.book, settings: { ...s.book.settings, ...patch } } } : {})),
+  setCover: (patch) =>
+    set((s) => (s.book ? { dirty: true, book: { ...s.book, cover: { ...s.book.cover, ...patch } } } : {})),
   markSaved: () => set({ dirty: false }),
 }));