| 1 | import { |
| 2 | getPresentation, |
| 3 | updatePresentation, |
| 4 | } from "@/app/_actions/notebook/presentation/presentationActions"; |
| 5 | import { updatePresentationThumbnailUrl } from "@/app/_actions/presentation/presentation-thumbnail-actions"; |
| 6 | import { type PlateSlide } from "@/components/notebook/presentation/utils/parser"; |
| 7 | import { usePresentationTheme } from "@/components/presentation/providers/PresentationThemeProvider"; |
| 8 | import { |
| 9 | applyPageBackgroundToConfig, |
| 10 | buildPresentationCustomization, |
| 11 | getPresentationCustomization, |
| 12 | } from "@/lib/presentation/customization"; |
| 13 | import { loadCustomFonts } from "@/lib/presentation/loadCustomFont"; |
| 14 | import { getPresentationThumbnailUrl } from "@/lib/presentation/thumbnail"; |
| 15 | import { |
| 16 | setThemeVariables, |
| 17 | type ThemeProperties, |
| 18 | type Themes, |
| 19 | themes, |
| 20 | } from "@/lib/presentation/themes"; |
| 21 | import { usePresentationHistoryState } from "@/states/presentation-history-state"; |
| 22 | import { usePresentationState } from "@/states/presentation-state"; |
| 23 | import { useQuery } from "@tanstack/react-query"; |
| 24 | import debounce from "lodash.debounce"; |
| 25 | import { nanoid } from "nanoid"; |
| 26 | import { useRouter } from "next/navigation"; |
| 27 | import { useCallback, useEffect, useLayoutEffect, useRef } from "react"; |
| 28 | import { toast } from "sonner"; |
| 29 | |
| 30 | export function usePresentationData(id: string, forcedReadOnly = false) { |
| 31 | const { resolvedTheme } = usePresentationTheme(); |
| 32 | const setCurrentPresentation = usePresentationState( |
| 33 | (s) => s.setCurrentPresentation, |
| 34 | ); |
| 35 | const setPresentationInput = usePresentationState( |
| 36 | (s) => s.setPresentationInput, |
| 37 | ); |
| 38 | const currentPresentationId = usePresentationState( |
| 39 | (s) => s.currentPresentationId, |
| 40 | ); |
| 41 | |
| 42 | const setOutline = usePresentationState((s) => s.setOutline); |
| 43 | const setSlides = usePresentationState((s) => s.setSlides); |
| 44 | const setThumbnailUrl = usePresentationState((s) => s.setThumbnailUrl); |
| 45 | const isGeneratingPresentation = usePresentationState( |
| 46 | (s) => s.isGeneratingPresentation, |
| 47 | ); |
| 48 | const setTheme = usePresentationState((s) => s.setTheme); |
| 49 | const setImageModel = usePresentationState((s) => s.setImageModel); |
| 50 | const setImageSource = usePresentationState((s) => s.setImageSource); |
| 51 | const setPresentationStyle = usePresentationState( |
| 52 | (s) => s.setPresentationStyle, |
| 53 | ); |
| 54 | const setPageStyle = usePresentationState((s) => s.setPageStyle); |
| 55 | const setLanguage = usePresentationState((s) => s.setLanguage); |
| 56 | const setTextContent = usePresentationState((s) => s.setTextContent); |
| 57 | const setTone = usePresentationState((s) => s.setTone); |
| 58 | const setAudience = usePresentationState((s) => s.setAudience); |
| 59 | const setScenario = usePresentationState((s) => s.setScenario); |
| 60 | const slides = usePresentationState((s) => s.slides); |
| 61 | const theme = usePresentationState((s) => s.theme); |
| 62 | const setCurrentSlideId = usePresentationState((s) => s.setCurrentSlideId); |
| 63 | const setIsReadOnly = usePresentationState((s) => s.setIsReadOnly); |
| 64 | const clearHistory = usePresentationHistoryState((s) => s.clearHistory); |
| 65 | // Track the theme value as it exists in the database to avoid redundant saves on hydration |
| 66 | const dbThemeRef = useRef<string | null>(null); |
| 67 | const canPersistThumbnailRef = useRef(false); |
| 68 | |
| 69 | // Create a debounced function to update the theme in the database |
| 70 | const debouncedThemeUpdate = useCallback( |
| 71 | debounce((presentationId: string, newTheme: string) => { |
| 72 | const state = usePresentationState.getState(); |
| 73 | updatePresentation({ |
| 74 | id: presentationId, |
| 75 | theme: newTheme, |
| 76 | customization: buildPresentationCustomization({ |
| 77 | customThemeData: state.customThemeData, |
| 78 | pageStyle: state.pageStyle, |
| 79 | presentationStyle: state.presentationStyle, |
| 80 | generationAspectRatio: state.generationAspectRatio, |
| 81 | textContent: state.textContent, |
| 82 | tone: state.tone, |
| 83 | audience: state.audience, |
| 84 | scenario: state.scenario, |
| 85 | pageBackground: state.pageBackground, |
| 86 | }), |
| 87 | }) |
| 88 | .then((result) => { |
| 89 | if (result.success) { |
| 90 | // Theme updated in database |
| 91 | } else { |
| 92 | console.error("Failed to update theme:", result.message); |
| 93 | } |
| 94 | }) |
| 95 | .catch((error) => { |
| 96 | console.error("Error updating theme:", error); |
| 97 | }); |
| 98 | }, 600), |
| 99 | [], |
| 100 | ); |
| 101 | const router = useRouter(); |
| 102 | |
| 103 | // Use React Query to fetch presentation data |
| 104 | const { data: presentationData, isLoading } = useQuery({ |
| 105 | queryKey: ["presentation", id], |
| 106 | queryFn: async () => { |
| 107 | const result = await getPresentation(id); |
| 108 | if (!result.success) { |
| 109 | toast.error(result.message ?? "Failed to load presentation"); |
| 110 | router.push("/404"); |
| 111 | return null; |
| 112 | } |
| 113 | const canEdit = Boolean(result.canEdit); |
| 114 | canPersistThumbnailRef.current = !forcedReadOnly && canEdit; |
| 115 | setIsReadOnly(forcedReadOnly || !canEdit); |
| 116 | return result.presentation; |
| 117 | }, |
| 118 | // Only fetch if not generating and we don't already have slides |
| 119 | enabled: |
| 120 | currentPresentationId !== id || |
| 121 | (!isGeneratingPresentation && slides.length === 0), |
| 122 | }); |
| 123 | |
| 124 | // Update presentation state when data is fetched |
| 125 | useLayoutEffect(() => { |
| 126 | if (isGeneratingPresentation) { |
| 127 | return; |
| 128 | } |
| 129 | // Don't set data if we already have slides |
| 130 | if (slides.length > 0 && currentPresentationId === id) { |
| 131 | return; |
| 132 | } |
| 133 | |
| 134 | if (presentationData) { |
| 135 | const customization = getPresentationCustomization( |
| 136 | presentationData.presentation?.customization, |
| 137 | ); |
| 138 | const customizationThemeId = presentationData.presentation?.theme ?? null; |
| 139 | // Record the theme as it exists in the DB so initial hydration doesn't trigger a save |
| 140 | dbThemeRef.current = customizationThemeId; |
| 141 | setCurrentPresentation(presentationData.id, presentationData.title); |
| 142 | setPresentationInput( |
| 143 | presentationData.presentation?.prompt ?? presentationData.title, |
| 144 | ); |
| 145 | |
| 146 | // Load all content from the database |
| 147 | const presentationContent = presentationData.presentation |
| 148 | ?.content as unknown as { |
| 149 | slides: PlateSlide[]; |
| 150 | config: Record<string, unknown>; |
| 151 | }; |
| 152 | |
| 153 | // Fix duplicate slide IDs (migration for existing presentations with the bug) |
| 154 | const rawSlides = presentationContent?.slides ?? []; |
| 155 | const seenIds = new Set<string>(); |
| 156 | let hasDuplicates = false; |
| 157 | const fixedSlides = rawSlides.map((slide) => { |
| 158 | if (seenIds.has(slide.id)) { |
| 159 | // Duplicate ID found, generate a new unique ID |
| 160 | hasDuplicates = true; |
| 161 | return { ...slide, id: nanoid() }; |
| 162 | } |
| 163 | seenIds.add(slide.id); |
| 164 | return slide; |
| 165 | }); |
| 166 | |
| 167 | // Set slides with fixed IDs |
| 168 | setSlides(fixedSlides); |
| 169 | |
| 170 | // Persist the fixed slides to database if we had duplicates |
| 171 | if (hasDuplicates) { |
| 172 | void updatePresentation({ |
| 173 | id: presentationData.id, |
| 174 | content: { |
| 175 | slides: fixedSlides, |
| 176 | config: presentationContent?.config ?? {}, |
| 177 | }, |
| 178 | }); |
| 179 | } |
| 180 | |
| 181 | setCurrentSlideId(fixedSlides[0]?.id ?? null); |
| 182 | const currentThumb = presentationData.thumbnailUrl; |
| 183 | const derivedThumbnailUrl = getPresentationThumbnailUrl(fixedSlides); |
| 184 | setThumbnailUrl(currentThumb ?? derivedThumbnailUrl ?? undefined); |
| 185 | if ( |
| 186 | !currentThumb && |
| 187 | derivedThumbnailUrl && |
| 188 | canPersistThumbnailRef.current |
| 189 | ) { |
| 190 | void (async () => { |
| 191 | await updatePresentationThumbnailUrl({ |
| 192 | id: presentationData.id, |
| 193 | thumbnailUrl: derivedThumbnailUrl, |
| 194 | onlyIfMissing: true, |
| 195 | }); |
| 196 | })(); |
| 197 | } |
| 198 | |
| 199 | const { setPageBackground } = usePresentationState.getState(); |
| 200 | // Priority: customization.pageBackground > content.config (backward compatibility) |
| 201 | if (customization?.pageBackground) { |
| 202 | const merged = applyPageBackgroundToConfig( |
| 203 | customization.pageBackground, |
| 204 | (presentationContent?.config as Record<string, unknown>) ?? {}, |
| 205 | ); |
| 206 | setPageBackground(merged); |
| 207 | } else if ( |
| 208 | presentationContent?.config?.backgroundOverride !== undefined |
| 209 | ) { |
| 210 | // Backward compatibility: read from old content.config location |
| 211 | setPageBackground( |
| 212 | presentationContent.config as Record<string, unknown>, |
| 213 | ); |
| 214 | } |
| 215 | |
| 216 | // Set outline |
| 217 | if (presentationData.presentation?.outline) { |
| 218 | setOutline(presentationData.presentation.outline); |
| 219 | } |
| 220 | |
| 221 | // Set theme if available, or use default based on user's system theme |
| 222 | if (customizationThemeId) { |
| 223 | const themeId = customizationThemeId; |
| 224 | const customThemeData = |
| 225 | customization?.themeData as ThemeProperties | undefined; |
| 226 | |
| 227 | if (customThemeData) { |
| 228 | setTheme(themeId, customThemeData); |
| 229 | } else if (themeId in themes) { |
| 230 | setTheme(themeId as Themes); |
| 231 | } else { |
| 232 | const fallback = resolvedTheme === "dark" ? "ebony" : "mystique"; |
| 233 | setTheme(fallback); |
| 234 | } |
| 235 | } else { |
| 236 | // No theme set in database, use default based on user's system theme |
| 237 | const defaultTheme = resolvedTheme === "dark" ? "ebony" : "mystique"; |
| 238 | setTheme(defaultTheme); |
| 239 | } |
| 240 | |
| 241 | if (presentationData?.presentation?.imageSource) { |
| 242 | setImageSource( |
| 243 | presentationData.presentation.imageSource as "ai" | "stock", |
| 244 | ); |
| 245 | } |
| 246 | |
| 247 | // Set presentationStyle if available |
| 248 | if (customization?.presentationStyle) { |
| 249 | setPresentationStyle(customization.presentationStyle); |
| 250 | } else if (presentationData?.presentation?.presentationStyle) { |
| 251 | setPresentationStyle(presentationData.presentation.presentationStyle); |
| 252 | } |
| 253 | |
| 254 | if (customization?.pageStyle) { |
| 255 | setPageStyle(customization.pageStyle); |
| 256 | } |
| 257 | |
| 258 | if (customization?.textContent) { |
| 259 | setTextContent(customization.textContent); |
| 260 | } |
| 261 | if (customization?.tone) { |
| 262 | setTone(customization.tone); |
| 263 | } |
| 264 | if (customization?.audience) { |
| 265 | setAudience(customization.audience); |
| 266 | } |
| 267 | if (customization?.scenario) { |
| 268 | setScenario(customization.scenario); |
| 269 | } |
| 270 | |
| 271 | // Set language if available |
| 272 | if (presentationData.presentation?.language) { |
| 273 | setLanguage(presentationData.presentation.language); |
| 274 | } |
| 275 | |
| 276 | clearHistory(); |
| 277 | } |
| 278 | }, [ |
| 279 | presentationData, |
| 280 | isGeneratingPresentation, |
| 281 | slides.length, // Add slides.length to dependencies to check if we already have slides |
| 282 | setCurrentPresentation, |
| 283 | setPresentationInput, |
| 284 | setOutline, |
| 285 | setSlides, |
| 286 | setTheme, |
| 287 | setImageModel, |
| 288 | setPresentationStyle, |
| 289 | setPageStyle, |
| 290 | setLanguage, |
| 291 | currentPresentationId, |
| 292 | id, |
| 293 | setImageSource, |
| 294 | setThumbnailUrl, |
| 295 | setTextContent, |
| 296 | setTone, |
| 297 | setAudience, |
| 298 | setScenario, |
| 299 | setIsReadOnly, |
| 300 | clearHistory, |
| 301 | forcedReadOnly, |
| 302 | resolvedTheme, |
| 303 | ]); |
| 304 | |
| 305 | // Update theme when it changes (but not on initial hydration) |
| 306 | useEffect(() => { |
| 307 | if (!id || isLoading || !theme) return; |
| 308 | // If we don't yet know the DB theme, skip until hydration sets it |
| 309 | if (dbThemeRef.current === null) return; |
| 310 | // Skip if the current theme matches the DB state (hydration) |
| 311 | if (theme === dbThemeRef.current) return; |
| 312 | |
| 313 | // Persist the new theme and update our DB baseline to prevent repeat writes |
| 314 | dbThemeRef.current = theme as string; |
| 315 | debouncedThemeUpdate(id, theme as string); |
| 316 | }, [theme, id, debouncedThemeUpdate, isLoading]); |
| 317 | |
| 318 | // Set theme variables when theme changes |
| 319 | useEffect(() => { |
| 320 | if (theme && resolvedTheme) { |
| 321 | const state = usePresentationState.getState(); |
| 322 | // Check if we have custom theme data |
| 323 | if (state.customThemeData) { |
| 324 | setThemeVariables(state.customThemeData); |
| 325 | } |
| 326 | // Otherwise try to use a predefined theme |
| 327 | else if (typeof theme === "string" && theme in themes) { |
| 328 | const currentTheme = themes[theme as keyof typeof themes]; |
| 329 | if (currentTheme) { |
| 330 | setThemeVariables(currentTheme); |
| 331 | } |
| 332 | } |
| 333 | } |
| 334 | }, [theme, resolvedTheme]); |
| 335 | |
| 336 | // Load custom fonts when theme changes |
| 337 | useEffect(() => { |
| 338 | const state = usePresentationState.getState(); |
| 339 | const themeData = state.customThemeData; |
| 340 | |
| 341 | console.log(themeData); |
| 342 | if (themeData?.fonts) { |
| 343 | const { heading, body, headingUrl, bodyUrl, headingWeight, bodyWeight } = |
| 344 | themeData.fonts; |
| 345 | |
| 346 | // Only load if we have custom font URLs |
| 347 | if (headingUrl || bodyUrl) { |
| 348 | loadCustomFonts({ |
| 349 | headingFont: heading, |
| 350 | headingUrl, |
| 351 | headingWeight, |
| 352 | bodyFont: body, |
| 353 | bodyUrl, |
| 354 | bodyWeight, |
| 355 | }).catch((error) => { |
| 356 | console.error("Failed to load custom fonts:", error); |
| 357 | }); |
| 358 | } |
| 359 | } |
| 360 | }, [theme]); |
| 361 | |
| 362 | // Get the current theme data |
| 363 | const currentThemeData = (() => { |
| 364 | const state = usePresentationState.getState(); |
| 365 | if (state.customThemeData) { |
| 366 | return state.customThemeData; |
| 367 | } |
| 368 | if (typeof theme === "string" && theme in themes) { |
| 369 | return themes[theme as keyof typeof themes]; |
| 370 | } |
| 371 | return null; |
| 372 | })(); |
| 373 | |
| 374 | return { |
| 375 | presentationData, |
| 376 | isLoading, |
| 377 | currentThemeData, |
| 378 | }; |
| 379 | } |
| 380 |