| 1 | "use client"; |
| 2 | |
| 3 | import { useCompletion } from "@ai-sdk/react"; |
| 4 | import { type PlateEditor } from "platejs/react"; |
| 5 | import { |
| 6 | useCallback, |
| 7 | useEffect, |
| 8 | useMemo, |
| 9 | useRef, |
| 10 | useState, |
| 11 | type Dispatch, |
| 12 | type SetStateAction, |
| 13 | } from "react"; |
| 14 | |
| 15 | import { type TAntvInfographicElement } from "@/components/notebook/presentation/editor/plugins/antv-infographic-plugin"; |
| 16 | import { findInfographicEntryById } from "@/hooks/presentation/infographic/findInfographicNode"; |
| 17 | import { |
| 18 | buildInfographicLayoutInstruction, |
| 19 | getInfographicOrientationForSlideLayout, |
| 20 | } from "@/lib/presentation/infographic-layout"; |
| 21 | import { useInfographicStreamingState } from "@/states/infographic-streaming-state"; |
| 22 | import { usePresentationState } from "@/states/presentation-state"; |
| 23 | |
| 24 | type GenerationParams = { |
| 25 | editor: PlateEditor; |
| 26 | element: TAntvInfographicElement; |
| 27 | setHasError: Dispatch<SetStateAction<boolean>>; |
| 28 | canResumeLoadingGeneration?: boolean; |
| 29 | }; |
| 30 | |
| 31 | type GenerationTarget = { |
| 32 | mode: "prompt" | "text"; |
| 33 | value: string; |
| 34 | }; |
| 35 | |
| 36 | type ActiveGenerationRequest = { |
| 37 | elementId: string; |
| 38 | requestKey: string; |
| 39 | mode: GenerationTarget["mode"]; |
| 40 | }; |
| 41 | |
| 42 | const DEFAULT_GENERATION_PROMPT = "Generate an infographic"; |
| 43 | |
| 44 | function hashGenerationInput(input: string): string { |
| 45 | let hash = 0; |
| 46 | |
| 47 | for (let index = 0; index < input.length; index += 1) { |
| 48 | hash = (hash << 5) - hash + input.charCodeAt(index); |
| 49 | hash |= 0; |
| 50 | } |
| 51 | |
| 52 | return Math.abs(hash).toString(36); |
| 53 | } |
| 54 | |
| 55 | function resolveGenerationTarget( |
| 56 | element: TAntvInfographicElement, |
| 57 | ): GenerationTarget { |
| 58 | const sourceText = element.sourceText?.trim(); |
| 59 | |
| 60 | if (sourceText) { |
| 61 | return { mode: "text", value: sourceText }; |
| 62 | } |
| 63 | |
| 64 | const generationPrompt = element.generationPrompt?.trim(); |
| 65 | |
| 66 | if (generationPrompt) { |
| 67 | return { mode: "prompt", value: generationPrompt }; |
| 68 | } |
| 69 | |
| 70 | return { mode: "prompt", value: DEFAULT_GENERATION_PROMPT }; |
| 71 | } |
| 72 | |
| 73 | export function useAntvInfographicGeneration({ |
| 74 | editor, |
| 75 | element, |
| 76 | setHasError, |
| 77 | canResumeLoadingGeneration = false, |
| 78 | }: GenerationParams) { |
| 79 | const [syntax, setSyntax] = useState<string>(""); |
| 80 | const isMountedRef = useRef(false); |
| 81 | const activeRequestRef = useRef<ActiveGenerationRequest | null>(null); |
| 82 | const elementId = typeof element.id === "string" ? element.id : ""; |
| 83 | const generationTarget = useMemo( |
| 84 | () => resolveGenerationTarget(element), |
| 85 | [element.generationPrompt, element.sourceText], |
| 86 | ); |
| 87 | const generationRequestKey = useMemo(() => { |
| 88 | if (!elementId) { |
| 89 | return ""; |
| 90 | } |
| 91 | |
| 92 | return `${elementId}:${generationTarget.mode}:${ |
| 93 | element.slideLayoutType ?? "unspecified" |
| 94 | }:${hashGenerationInput(generationTarget.value)}`; |
| 95 | }, [ |
| 96 | element.slideLayoutType, |
| 97 | elementId, |
| 98 | generationTarget.mode, |
| 99 | generationTarget.value, |
| 100 | ]); |
| 101 | const layoutInstruction = useMemo( |
| 102 | () => buildInfographicLayoutInstruction(element.slideLayoutType), |
| 103 | [element.slideLayoutType], |
| 104 | ); |
| 105 | const requestedOrientation = useMemo( |
| 106 | () => getInfographicOrientationForSlideLayout(element.slideLayoutType), |
| 107 | [element.slideLayoutType], |
| 108 | ); |
| 109 | const isInfographicComplete = useInfographicStreamingState((state) => |
| 110 | elementId ? state.completedInfographicIds[elementId] === true : false, |
| 111 | ); |
| 112 | const isReadyToGenerate = |
| 113 | generationTarget.mode === "text" || |
| 114 | isInfographicComplete || |
| 115 | canResumeLoadingGeneration; |
| 116 | const hasStartedRequest = useInfographicStreamingState((state) => |
| 117 | generationRequestKey |
| 118 | ? state.startedGenerationRequests[generationRequestKey] === true |
| 119 | : false, |
| 120 | ); |
| 121 | |
| 122 | useEffect(() => { |
| 123 | isMountedRef.current = true; |
| 124 | |
| 125 | return () => { |
| 126 | isMountedRef.current = false; |
| 127 | }; |
| 128 | }, []); |
| 129 | |
| 130 | const updateInfographicNode = useCallback( |
| 131 | ( |
| 132 | targetElementIds: string[], |
| 133 | update: Partial<TAntvInfographicElement>, |
| 134 | ): boolean => { |
| 135 | const candidateIds = [...new Set(targetElementIds.filter(Boolean))]; |
| 136 | |
| 137 | if (candidateIds.length === 0) { |
| 138 | return false; |
| 139 | } |
| 140 | |
| 141 | for (const candidateId of candidateIds) { |
| 142 | const entry = findInfographicEntryById(editor, candidateId); |
| 143 | const path = entry?.[1]; |
| 144 | |
| 145 | if (!path) { |
| 146 | continue; |
| 147 | } |
| 148 | |
| 149 | editor.tf.setNodes(update, { at: path }); |
| 150 | |
| 151 | // Ensure global state has the updated content for serialization |
| 152 | const slideId = editor.id; |
| 153 | if (slideId && typeof slideId === "string") { |
| 154 | usePresentationState.getState().updateSlide(slideId, { |
| 155 | content: editor.children, |
| 156 | }); |
| 157 | } |
| 158 | |
| 159 | return true; |
| 160 | } |
| 161 | |
| 162 | return false; |
| 163 | }, |
| 164 | [editor], |
| 165 | ); |
| 166 | |
| 167 | const handleGenerationFinish = useCallback( |
| 168 | (completion: string) => { |
| 169 | const activeRequest = activeRequestRef.current; |
| 170 | |
| 171 | if (!activeRequest) { |
| 172 | return; |
| 173 | } |
| 174 | |
| 175 | if (isMountedRef.current) { |
| 176 | setSyntax(completion); |
| 177 | setHasError(false); |
| 178 | } |
| 179 | |
| 180 | const didUpdateNode = updateInfographicNode( |
| 181 | [activeRequest.elementId, elementId], |
| 182 | { |
| 183 | syntax: completion, |
| 184 | isLoading: false, |
| 185 | }, |
| 186 | ); |
| 187 | |
| 188 | console.info("[infographic-api] generation response applied", { |
| 189 | elementId: activeRequest.elementId, |
| 190 | didUpdateNode, |
| 191 | requestKey: activeRequest.requestKey, |
| 192 | syntaxLength: completion.length, |
| 193 | }); |
| 194 | |
| 195 | if (!didUpdateNode && isMountedRef.current) { |
| 196 | setHasError(true); |
| 197 | } |
| 198 | |
| 199 | }, |
| 200 | [elementId, setHasError, updateInfographicNode], |
| 201 | ); |
| 202 | |
| 203 | const handleGenerationError = useCallback(() => { |
| 204 | const activeRequest = activeRequestRef.current; |
| 205 | |
| 206 | if (!activeRequest) { |
| 207 | return; |
| 208 | } |
| 209 | |
| 210 | updateInfographicNode([activeRequest.elementId, elementId], { |
| 211 | isLoading: false, |
| 212 | }); |
| 213 | |
| 214 | if (isMountedRef.current) { |
| 215 | setHasError(true); |
| 216 | } |
| 217 | |
| 218 | }, [elementId, setHasError, updateInfographicNode]); |
| 219 | |
| 220 | const { |
| 221 | completion: syntaxFromPrompt, |
| 222 | complete: startForPrompt, |
| 223 | isLoading: isGeneratingFromPrompt, |
| 224 | } = useCompletion({ |
| 225 | api: "/api/presentation/prompt-to-diagram", |
| 226 | id: elementId ? `${elementId}:prompt-to-diagram` : undefined, |
| 227 | onFinish(_prompt, completion) { |
| 228 | handleGenerationFinish(completion); |
| 229 | }, |
| 230 | onError() { |
| 231 | handleGenerationError(); |
| 232 | }, |
| 233 | }); |
| 234 | |
| 235 | const { |
| 236 | completion: syntaxFromText, |
| 237 | complete: startForText, |
| 238 | isLoading: isGeneratingFromText, |
| 239 | } = useCompletion({ |
| 240 | api: "/api/presentation/text-to-diagram", |
| 241 | id: elementId ? `${elementId}:text-to-diagram` : undefined, |
| 242 | onFinish(_prompt, completion) { |
| 243 | handleGenerationFinish(completion); |
| 244 | }, |
| 245 | onError() { |
| 246 | handleGenerationError(); |
| 247 | }, |
| 248 | }); |
| 249 | |
| 250 | const isGenerating = isGeneratingFromPrompt || isGeneratingFromText; |
| 251 | |
| 252 | useEffect(() => { |
| 253 | if (element.isLoading) { |
| 254 | setHasError(false); |
| 255 | return; |
| 256 | } |
| 257 | |
| 258 | activeRequestRef.current = null; |
| 259 | }, [element.isLoading, setHasError]); |
| 260 | |
| 261 | useEffect(() => { |
| 262 | if (!elementId || !generationRequestKey) { |
| 263 | return; |
| 264 | } |
| 265 | |
| 266 | if ( |
| 267 | !isMountedRef.current || |
| 268 | !element.isLoading || |
| 269 | element.syntax.trim().length > 0 || |
| 270 | !isReadyToGenerate || |
| 271 | isGenerating || |
| 272 | hasStartedRequest |
| 273 | ) { |
| 274 | return; |
| 275 | } |
| 276 | |
| 277 | const didStartRequest = useInfographicStreamingState |
| 278 | .getState() |
| 279 | .tryStartGenerationRequest(generationRequestKey); |
| 280 | |
| 281 | if (!didStartRequest) { |
| 282 | return; |
| 283 | } |
| 284 | |
| 285 | activeRequestRef.current = { |
| 286 | elementId, |
| 287 | requestKey: generationRequestKey, |
| 288 | mode: generationTarget.mode, |
| 289 | }; |
| 290 | setSyntax(""); |
| 291 | setHasError(false); |
| 292 | |
| 293 | console.info("[infographic-api] starting generation request", { |
| 294 | elementId, |
| 295 | inputLength: generationTarget.value.length, |
| 296 | mode: generationTarget.mode, |
| 297 | requestKey: generationRequestKey, |
| 298 | }); |
| 299 | |
| 300 | if (generationTarget.mode === "text") { |
| 301 | void startForText(generationTarget.value, { |
| 302 | body: { |
| 303 | slideLayoutType: element.slideLayoutType, |
| 304 | requestedOrientation, |
| 305 | layoutInstruction, |
| 306 | }, |
| 307 | }); |
| 308 | return; |
| 309 | } |
| 310 | |
| 311 | void startForPrompt(generationTarget.value, { |
| 312 | body: { |
| 313 | slideLayoutType: element.slideLayoutType, |
| 314 | requestedOrientation, |
| 315 | layoutInstruction, |
| 316 | }, |
| 317 | }); |
| 318 | }, [ |
| 319 | element.isLoading, |
| 320 | element.slideLayoutType, |
| 321 | element.syntax, |
| 322 | elementId, |
| 323 | generationRequestKey, |
| 324 | generationTarget.mode, |
| 325 | generationTarget.value, |
| 326 | isGenerating, |
| 327 | isReadyToGenerate, |
| 328 | layoutInstruction, |
| 329 | requestedOrientation, |
| 330 | hasStartedRequest, |
| 331 | setHasError, |
| 332 | startForPrompt, |
| 333 | startForText, |
| 334 | ]); |
| 335 | |
| 336 | useEffect(() => { |
| 337 | if (!isMountedRef.current) { |
| 338 | return; |
| 339 | } |
| 340 | |
| 341 | if (activeRequestRef.current?.mode === "text") { |
| 342 | if (syntaxFromText) { |
| 343 | setSyntax(syntaxFromText); |
| 344 | } |
| 345 | |
| 346 | return; |
| 347 | } |
| 348 | |
| 349 | if (syntaxFromPrompt) { |
| 350 | setSyntax(syntaxFromPrompt); |
| 351 | } |
| 352 | }, [syntaxFromPrompt, syntaxFromText]); |
| 353 | |
| 354 | return { syntax }; |
| 355 | } |
| 356 |