| 1 | "use client"; |
| 2 | |
| 3 | import { nanoid } from "nanoid"; |
| 4 | |
| 5 | import { type PlateSlide } from "@/components/notebook/presentation/utils/parser"; |
| 6 | import { getSlideAspectRatioForGenerationAspectRatio } from "@/lib/presentation/aspect-ratio"; |
| 7 | import { usePresentationState } from "@/states/presentation-state"; |
| 8 | |
| 9 | export type InsertPosition = "before" | "after"; |
| 10 | |
| 11 | export function useSlideOperations() { |
| 12 | const setSlides = usePresentationState((s) => s.setSlides); |
| 13 | const setCurrentSlideId = usePresentationState((s) => s.setCurrentSlideId); |
| 14 | const buildSlide = (slide?: PlateSlide): PlateSlide => { |
| 15 | if (slide) { |
| 16 | return slide; |
| 17 | } |
| 18 | |
| 19 | const { generationAspectRatio } = usePresentationState.getState(); |
| 20 | |
| 21 | return { |
| 22 | content: [ |
| 23 | { |
| 24 | type: "h1", |
| 25 | children: [{ text: "" }], |
| 26 | }, |
| 27 | ], |
| 28 | id: nanoid(), |
| 29 | alignment: "center", |
| 30 | formatCategory: "presentation", |
| 31 | aspectRatio: getSlideAspectRatioForGenerationAspectRatio( |
| 32 | generationAspectRatio, |
| 33 | ), |
| 34 | }; |
| 35 | }; |
| 36 | |
| 37 | const addSlide = ( |
| 38 | position: InsertPosition, |
| 39 | id: string, |
| 40 | slide?: PlateSlide, |
| 41 | ) => { |
| 42 | const newSlide = buildSlide(slide); |
| 43 | const { slides } = usePresentationState.getState(); |
| 44 | const updatedSlides = [...slides]; |
| 45 | const index = slides.findIndex((slide) => slide.id === id); |
| 46 | const insertIndex = position === "before" ? index : index + 1; |
| 47 | updatedSlides.splice(insertIndex, 0, newSlide); |
| 48 | setSlides(updatedSlides); |
| 49 | setCurrentSlideId(newSlide.id); |
| 50 | }; |
| 51 | |
| 52 | const addFirstSlide = (slide?: PlateSlide) => { |
| 53 | const newSlide = buildSlide(slide); |
| 54 | const { slides } = usePresentationState.getState(); |
| 55 | |
| 56 | if (slides.length === 0) { |
| 57 | setSlides([newSlide]); |
| 58 | setCurrentSlideId(newSlide.id); |
| 59 | return; |
| 60 | } |
| 61 | |
| 62 | const updatedSlides = [...slides, newSlide]; |
| 63 | setSlides(updatedSlides); |
| 64 | setCurrentSlideId(newSlide.id); |
| 65 | }; |
| 66 | |
| 67 | const deleteSlide = (id: string) => { |
| 68 | const { slides } = usePresentationState.getState(); |
| 69 | const updatedSlides = [...slides]; |
| 70 | const index = updatedSlides.findIndex((slide) => slide.id === id); |
| 71 | updatedSlides.splice(index, 1); |
| 72 | setSlides(updatedSlides); |
| 73 | }; |
| 74 | |
| 75 | return { addSlide, addFirstSlide, deleteSlide }; |
| 76 | } |
| 77 |