|
| 1 | +import { useEffect, useMemo, useState } from 'react'; |
| 2 | + |
| 3 | +const MONTH_NAMES = [ |
| 4 | + 'January', |
| 5 | + 'February', |
| 6 | + 'March', |
| 7 | + 'April', |
| 8 | + 'May', |
| 9 | + 'June', |
| 10 | + 'July', |
| 11 | + 'August', |
| 12 | + 'September', |
| 13 | + 'October', |
| 14 | + 'November', |
| 15 | + 'December', |
| 16 | +]; |
| 17 | + |
| 18 | +const WEEKDAYS = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']; |
| 19 | + |
| 20 | +function normalizeEvents(events) { |
| 21 | + let source = events; |
| 22 | + |
| 23 | + if (typeof source === 'string' && source.trim()) { |
| 24 | + try { |
| 25 | + const jsonLike = source |
| 26 | + .trim() |
| 27 | + .replace(/([{,]\s*)([A-Za-z_$][\w$]*)\s*:/g, '$1"$2":') |
| 28 | + .replace(/'/g, '"'); |
| 29 | + |
| 30 | + source = JSON.parse(jsonLike); |
| 31 | + } catch { |
| 32 | + source = []; |
| 33 | + } |
| 34 | + } |
| 35 | + |
| 36 | + if (!Array.isArray(source)) { |
| 37 | + return []; |
| 38 | + } |
| 39 | + |
| 40 | + return source |
| 41 | + .map((event) => { |
| 42 | + const date = new Date(event?.date); |
| 43 | + if (Number.isNaN(date.getTime())) { |
| 44 | + return null; |
| 45 | + } |
| 46 | + |
| 47 | + return { |
| 48 | + date, |
| 49 | + dateKey: date.toISOString().slice(0, 10), |
| 50 | + title: String(event?.title || '').trim() || 'Untitled event', |
| 51 | + details: String(event?.details || event?.info || '').trim(), |
| 52 | + }; |
| 53 | + }) |
| 54 | + .filter(Boolean) |
| 55 | + .sort((a, b) => a.date - b.date); |
| 56 | +} |
| 57 | + |
| 58 | +function getMonthGrid(year, month) { |
| 59 | + const firstDay = new Date(year, month - 1, 1); |
| 60 | + const daysInMonth = new Date(year, month, 0).getDate(); |
| 61 | + const leadingEmpty = firstDay.getDay(); |
| 62 | + |
| 63 | + const cells = Array.from({ length: leadingEmpty }, () => null); |
| 64 | + for (let day = 1; day <= daysInMonth; day += 1) { |
| 65 | + cells.push(day); |
| 66 | + } |
| 67 | + |
| 68 | + while (cells.length % 7 !== 0) { |
| 69 | + cells.push(null); |
| 70 | + } |
| 71 | + |
| 72 | + return cells; |
| 73 | +} |
| 74 | + |
| 75 | +function formatShortDate(date) { |
| 76 | + return date.toLocaleDateString(undefined, { |
| 77 | + month: 'short', |
| 78 | + day: 'numeric', |
| 79 | + year: 'numeric', |
| 80 | + }); |
| 81 | +} |
| 82 | + |
| 83 | +function toBoolean(value, fallback = true) { |
| 84 | + if (typeof value === 'boolean') { |
| 85 | + return value; |
| 86 | + } |
| 87 | + |
| 88 | + if (typeof value === 'string') { |
| 89 | + const normalized = value.trim().toLowerCase(); |
| 90 | + if (normalized === 'true') { |
| 91 | + return true; |
| 92 | + } |
| 93 | + if (normalized === 'false') { |
| 94 | + return false; |
| 95 | + } |
| 96 | + } |
| 97 | + |
| 98 | + return fallback; |
| 99 | +} |
| 100 | + |
| 101 | +function getInitialViewMonth({ startMonthSource, customYear, customMonth, events }) { |
| 102 | + const now = new Date(); |
| 103 | + const normalizedSource = String(startMonthSource || 'today').trim().toLowerCase(); |
| 104 | + |
| 105 | + if (normalizedSource === 'first-event' && events.length > 0) { |
| 106 | + const firstEventDate = events[0].date; |
| 107 | + return { |
| 108 | + year: firstEventDate.getFullYear(), |
| 109 | + month: firstEventDate.getMonth() + 1, |
| 110 | + }; |
| 111 | + } |
| 112 | + |
| 113 | + if (normalizedSource === 'custom') { |
| 114 | + return { |
| 115 | + year: customYear, |
| 116 | + month: customMonth, |
| 117 | + }; |
| 118 | + } |
| 119 | + |
| 120 | + return { |
| 121 | + year: now.getFullYear(), |
| 122 | + month: now.getMonth() + 1, |
| 123 | + }; |
| 124 | +} |
| 125 | + |
| 126 | +function shiftMonth(year, month, delta) { |
| 127 | + const date = new Date(year, month - 1 + delta, 1); |
| 128 | + return { |
| 129 | + year: date.getFullYear(), |
| 130 | + month: date.getMonth() + 1, |
| 131 | + }; |
| 132 | +} |
| 133 | + |
| 134 | +export default function Calendar({ |
| 135 | + mode = 'month', |
| 136 | + year = new Date().getFullYear(), |
| 137 | + month = new Date().getMonth() + 1, |
| 138 | + monthNavigation = true, |
| 139 | + startMonthSource = 'today', |
| 140 | + events = [], |
| 141 | + title = 'Calendar', |
| 142 | + className = '', |
| 143 | +}) { |
| 144 | + const safeYear = Number.isFinite(Number(year)) ? Number(year) : new Date().getFullYear(); |
| 145 | + const safeMonth = Math.min(Math.max(Number(month) || 1, 1), 12); |
| 146 | + const allowMonthNavigation = toBoolean(monthNavigation, true); |
| 147 | + |
| 148 | + const normalizedEvents = useMemo(() => normalizeEvents(events), [events]); |
| 149 | + |
| 150 | + const initialView = useMemo( |
| 151 | + () => getInitialViewMonth({ |
| 152 | + startMonthSource, |
| 153 | + customYear: safeYear, |
| 154 | + customMonth: safeMonth, |
| 155 | + events: normalizedEvents, |
| 156 | + }), |
| 157 | + [normalizedEvents, safeMonth, safeYear, startMonthSource] |
| 158 | + ); |
| 159 | + |
| 160 | + const [view, setView] = useState(initialView); |
| 161 | + |
| 162 | + useEffect(() => { |
| 163 | + setView(initialView); |
| 164 | + }, [initialView]); |
| 165 | + |
| 166 | + const viewYear = view.year; |
| 167 | + const viewMonth = view.month; |
| 168 | + |
| 169 | + const eventMap = useMemo(() => { |
| 170 | + const map = new Map(); |
| 171 | + |
| 172 | + normalizedEvents.forEach((event) => { |
| 173 | + if (event.date.getFullYear() !== viewYear || event.date.getMonth() + 1 !== viewMonth) { |
| 174 | + return; |
| 175 | + } |
| 176 | + |
| 177 | + if (!map.has(event.dateKey)) { |
| 178 | + map.set(event.dateKey, []); |
| 179 | + } |
| 180 | + map.get(event.dateKey).push(event); |
| 181 | + }); |
| 182 | + |
| 183 | + return map; |
| 184 | + }, [normalizedEvents, viewMonth, viewYear]); |
| 185 | + |
| 186 | + if (mode === 'agenda') { |
| 187 | + return ( |
| 188 | + <div className={`my-4 overflow-hidden rounded-lg border border-slate-200 bg-white dark:border-slate-800 dark:bg-slate-950/40 ${className}`}> |
| 189 | + <div className="border-b border-slate-200 px-4 py-3 dark:border-slate-800"> |
| 190 | + <p className="text-sm font-semibold text-slate-900 dark:text-slate-100">{title}</p> |
| 191 | + </div> |
| 192 | + |
| 193 | + <div className="divide-y divide-slate-200 dark:divide-slate-800"> |
| 194 | + {normalizedEvents.length === 0 ? ( |
| 195 | + <p className="px-4 py-4 text-sm text-slate-500 dark:text-slate-400">No appointments scheduled.</p> |
| 196 | + ) : ( |
| 197 | + normalizedEvents.map((event, index) => ( |
| 198 | + <div key={`${event.dateKey}-${event.title}-${index}`} className="grid grid-cols-[130px_1fr] gap-4 px-4 py-3"> |
| 199 | + <div className="text-sm font-semibold text-slate-700 dark:text-slate-200">{formatShortDate(event.date)}</div> |
| 200 | + <div> |
| 201 | + <p className="text-sm font-semibold text-slate-900 dark:text-slate-100">{event.title}</p> |
| 202 | + {event.details ? <p className="mt-0.5 text-xs text-slate-500 dark:text-slate-400">{event.details}</p> : null} |
| 203 | + </div> |
| 204 | + </div> |
| 205 | + )) |
| 206 | + )} |
| 207 | + </div> |
| 208 | + </div> |
| 209 | + ); |
| 210 | + } |
| 211 | + |
| 212 | + const monthGrid = getMonthGrid(viewYear, viewMonth); |
| 213 | + |
| 214 | + return ( |
| 215 | + <div className={`my-4 overflow-hidden rounded-lg border border-slate-200 bg-white dark:border-slate-800 dark:bg-slate-950/40 ${className}`}> |
| 216 | + <div className="border-b border-slate-200 px-4 py-3 dark:border-slate-800"> |
| 217 | + <div className="flex items-center justify-between gap-3"> |
| 218 | + <div> |
| 219 | + <p className="text-sm font-semibold text-slate-900 dark:text-slate-100">{title}</p> |
| 220 | + <p className="mt-1 text-xs text-slate-500 dark:text-slate-400">{MONTH_NAMES[viewMonth - 1]} {viewYear}</p> |
| 221 | + </div> |
| 222 | + |
| 223 | + {allowMonthNavigation ? ( |
| 224 | + <div className="flex items-center gap-2"> |
| 225 | + <button |
| 226 | + type="button" |
| 227 | + onClick={() => setView((prev) => shiftMonth(prev.year, prev.month, -1))} |
| 228 | + className="rounded-md border border-slate-300 px-2 py-1 text-xs text-slate-700 hover:bg-slate-100 dark:border-slate-700 dark:text-slate-200 dark:hover:bg-slate-800" |
| 229 | + > |
| 230 | + Prev |
| 231 | + </button> |
| 232 | + <button |
| 233 | + type="button" |
| 234 | + onClick={() => setView((prev) => shiftMonth(prev.year, prev.month, 1))} |
| 235 | + className="rounded-md border border-slate-300 px-2 py-1 text-xs text-slate-700 hover:bg-slate-100 dark:border-slate-700 dark:text-slate-200 dark:hover:bg-slate-800" |
| 236 | + > |
| 237 | + Next |
| 238 | + </button> |
| 239 | + </div> |
| 240 | + ) : null} |
| 241 | + </div> |
| 242 | + </div> |
| 243 | + |
| 244 | + <div className="grid grid-cols-7 border-b border-slate-200 text-center text-xs font-semibold uppercase tracking-wide text-slate-500 dark:border-slate-800 dark:text-slate-400"> |
| 245 | + {WEEKDAYS.map((weekday) => ( |
| 246 | + <div key={weekday} className="px-1 py-2">{weekday}</div> |
| 247 | + ))} |
| 248 | + </div> |
| 249 | + |
| 250 | + <div className="grid grid-cols-7"> |
| 251 | + {monthGrid.map((day, index) => { |
| 252 | + const dateKey = day ? `${viewYear}-${String(viewMonth).padStart(2, '0')}-${String(day).padStart(2, '0')}` : ''; |
| 253 | + const dayEvents = dateKey ? eventMap.get(dateKey) || [] : []; |
| 254 | + |
| 255 | + return ( |
| 256 | + <div |
| 257 | + key={`${dateKey || 'empty'}-${index}`} |
| 258 | + className="min-h-24 border-b border-r border-slate-200 px-2 py-1.5 last:border-r-0 dark:border-slate-800" |
| 259 | + > |
| 260 | + {day ? ( |
| 261 | + <> |
| 262 | + <p className="text-xs font-semibold text-slate-700 dark:text-slate-200">{day}</p> |
| 263 | + {dayEvents.length > 0 ? ( |
| 264 | + <div className="mt-1 space-y-1"> |
| 265 | + {dayEvents.slice(0, 2).map((event, eventIndex) => ( |
| 266 | + <p |
| 267 | + key={`${event.title}-${eventIndex}`} |
| 268 | + className="truncate rounded bg-blue-100 px-1.5 py-0.5 text-[11px] text-blue-800 dark:bg-blue-900/40 dark:text-blue-200" |
| 269 | + title={event.details || event.title} |
| 270 | + > |
| 271 | + {event.title} |
| 272 | + </p> |
| 273 | + ))} |
| 274 | + {dayEvents.length > 2 ? ( |
| 275 | + <p className="text-[11px] text-slate-500 dark:text-slate-400">+{dayEvents.length - 2} more</p> |
| 276 | + ) : null} |
| 277 | + </div> |
| 278 | + ) : null} |
| 279 | + </> |
| 280 | + ) : null} |
| 281 | + </div> |
| 282 | + ); |
| 283 | + })} |
| 284 | + </div> |
| 285 | + </div> |
| 286 | + ); |
| 287 | +} |
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