Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 | import { useState, useRef, useCallback, useEffect } from 'react' import type { AlignmentConfig } from './renderPhiExploreImage' const ALL_SUBJECTS = [ 'fiddlehead', 'galaxy', 'hurricane', 'nautilus', 'pinecone', 'rams-horn', 'romanesco', 'sunflower', 'wave', ] as const const DEFAULT_ALIGNMENT: AlignmentConfig = { scale: 1, rotation: 0, offsetX: 0, offsetY: 0, } type ThemeVariant = 'light' | 'dark' interface AlignmentEntry { light?: AlignmentConfig dark?: AlignmentConfig // legacy top-level fields scale?: number rotation?: number offsetX?: number offsetY?: number } type AlignmentJson = Record<string, AlignmentEntry> export interface PhiCenteringMode { enabled: boolean subjectId: string theme: ThemeVariant alignment: AlignmentConfig image: HTMLImageElement | null allSubjects: readonly string[] dirty: boolean saving: boolean setEnabled: (v: boolean) => void setSubject: (id: string) => void setTheme: (t: ThemeVariant) => void updateAlignment: (partial: Partial<AlignmentConfig>) => void resetAlignment: () => void nextSubject: () => void prevSubject: () => void } export function usePhiCenteringMode(resolvedTheme: string | undefined): PhiCenteringMode { const [enabled, setEnabled] = useState(false) const [subjectId, setSubjectIdRaw] = useState<string>(ALL_SUBJECTS[0]) const [theme, setThemeRaw] = useState<ThemeVariant>(resolvedTheme === 'dark' ? 'dark' : 'light') const [alignment, setAlignment] = useState<AlignmentConfig>({ ...DEFAULT_ALIGNMENT }) const [image, setImage] = useState<HTMLImageElement | null>(null) const [dirty, setDirty] = useState(false) const [saving, setSaving] = useState(false) const alignmentDataRef = useRef<AlignmentJson | null>(null) const loadIdRef = useRef(0) const saveTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null) const latestAlignmentRef = useRef(alignment) latestAlignmentRef.current = alignment // Load alignment.json once useEffect(() => { if (!enabled) return if (alignmentDataRef.current) return // already loaded let cancelled = false async function load() { try { const res = await fetch(`/images/constants/phi-explore/alignment.json?t=${Date.now()}`) if (!res.ok) return const data = (await res.json()) as AlignmentJson if (cancelled) return alignmentDataRef.current = data // Apply alignment for current subject+theme const entry = data[subjectId] if (entry?.[theme]) { setAlignment({ ...entry[theme]! }) } } catch { // ignore } } load() return () => { cancelled = true } // Only load once when enabled // eslint-disable-next-line react-hooks/exhaustive-deps }, [enabled]) // Load image when subject or theme changes useEffect(() => { if (!enabled) return const id = ++loadIdRef.current setImage(null) const img = new Image() img.crossOrigin = 'anonymous' img.onload = () => { if (id !== loadIdRef.current) return setImage(img) } img.onerror = () => { // ignore } img.src = `/images/constants/phi-explore/${subjectId}-${theme}.png` // Also update alignment from cached data const data = alignmentDataRef.current if (data) { const entry = data[subjectId] if (entry?.[theme]) { setAlignment({ ...entry[theme]! }) } else { setAlignment({ ...DEFAULT_ALIGNMENT }) } } setDirty(false) return () => { loadIdRef.current++ } }, [enabled, subjectId, theme]) // Debounced auto-save const scheduleSave = useCallback(() => { if (saveTimerRef.current) clearTimeout(saveTimerRef.current) saveTimerRef.current = setTimeout(async () => { const al = latestAlignmentRef.current setSaving(true) try { const res = await fetch('/api/admin/constant-images/phi-explore/alignment', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ subjectId, theme, alignment: al, }), }) if (res.ok) { const data = (await res.json()) as AlignmentJson alignmentDataRef.current = data setDirty(false) } } catch { // ignore } finally { setSaving(false) } }, 500) }, [subjectId, theme]) // Cleanup save timer useEffect(() => { return () => { if (saveTimerRef.current) clearTimeout(saveTimerRef.current) } }, []) const updateAlignment = useCallback( (partial: Partial<AlignmentConfig>) => { setAlignment((prev) => { const next = { ...prev, ...partial } return next }) setDirty(true) scheduleSave() }, [scheduleSave] ) const resetAlignment = useCallback(() => { setAlignment({ ...DEFAULT_ALIGNMENT }) setDirty(true) scheduleSave() }, [scheduleSave]) const setSubject = useCallback((id: string) => { setSubjectIdRaw(id) }, []) const setTheme = useCallback((t: ThemeVariant) => { setThemeRaw(t) }, []) const nextSubject = useCallback(() => { const idx = ALL_SUBJECTS.indexOf(subjectId as (typeof ALL_SUBJECTS)[number]) const next = ALL_SUBJECTS[(idx + 1) % ALL_SUBJECTS.length] setSubjectIdRaw(next) }, [subjectId]) const prevSubject = useCallback(() => { const idx = ALL_SUBJECTS.indexOf(subjectId as (typeof ALL_SUBJECTS)[number]) const prev = ALL_SUBJECTS[(idx - 1 + ALL_SUBJECTS.length) % ALL_SUBJECTS.length] setSubjectIdRaw(prev) }, [subjectId]) return { enabled, subjectId, theme, alignment, image, allSubjects: ALL_SUBJECTS, dirty, saving, setEnabled, setSubject, setTheme, updateAlignment, resetAlignment, nextSubject, prevSubject, } } |