feat: entry editor at /content/:key/new and /content/:key/:id

web/src/lib/entryValue.ts

@@ -0,0 +1,59 @@
+import { formatAbsoluteDate } from '@/lib/relativeDate'
+
+const ISO_DAY_PREFIX = /^(\d{4})-(\d{2})-(\d{2})/
+const ISO_DAY = /^(\d{4})-(\d{2})-(\d{2})$/
+
+export function isBlank(value: unknown) {
+	return value === null || value === undefined || value === ''
+}
+
+export function charCount(text: string) {
+	return Array.from(text).length
+}
+
+export function isIsoDay(value: unknown): value is string {
+	if (typeof value !== 'string') {
+		return false
+	}
+	const match = ISO_DAY.exec(value)
+	if (!match) {
+		return false
+	}
+	const [year, month, day] = [Number(match[1]), Number(match[2]), Number(match[3])]
+	const date = new Date(year, month - 1, day)
+	return date.getFullYear() === year && date.getMonth() === month - 1 && date.getDate() === day
+}
+
+export function asText(value: unknown) {
+	return value === null || value === undefined ? '' : String(value)
+}
+
+export function asNumber(value: unknown) {
+	if (typeof value === 'number' && Number.isFinite(value)) {
+		return value
+	}
+	if (typeof value === 'string' && value.trim() !== '' && Number.isFinite(Number(value))) {
+		return Number(value)
+	}
+	return null
+}
+
+export function asBoolean(value: unknown) {
+	return typeof value === 'boolean' ? value : null
+}
+
+export function formatDayValue(value: string) {
+	const match = ISO_DAY_PREFIX.exec(value)
+	if (!match) {
+		return value
+	}
+	return formatAbsoluteDate(new Date(Number(match[1]), Number(match[2]) - 1, Number(match[3])))
+}
+
+export function freeSentinel(taken: string[], base = '__none__') {
+	let sentinel = base
+	while (taken.includes(sentinel)) {
+		sentinel += '_'
+	}
+	return sentinel
+}