52 lines
1.3 KiB
TypeScript
52 lines
1.3 KiB
TypeScript
export type TodoStatus = 'pending' | 'in_progress' | 'completed' | 'cancelled'
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export interface TodoItem {
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content: string
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id: string
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status: TodoStatus
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}
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const STATUSES: readonly TodoStatus[] = ['pending', 'in_progress', 'completed', 'cancelled']
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const isRecord = (v: unknown): v is Record<string, unknown> => Boolean(v && typeof v === 'object' && !Array.isArray(v))
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const isStatus = (v: unknown): v is TodoStatus => (STATUSES as readonly string[]).includes(v as string)
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function parseArray(value: unknown[]): TodoItem[] {
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return value.flatMap(item => {
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if (!isRecord(item) || !isStatus(item.status)) {
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return []
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}
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const id = String(item.id ?? '').trim()
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const content = String(item.content ?? '').trim()
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return id && content ? [{ content, id, status: item.status }] : []
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})
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}
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function parse(value: unknown, depth: number): null | TodoItem[] {
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if (depth > 2) {
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return null
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}
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if (Array.isArray(value)) {
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return parseArray(value)
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}
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if (typeof value === 'string' && value.trim()) {
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try {
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return parse(JSON.parse(value), depth + 1)
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} catch {
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return null
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}
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}
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if (isRecord(value) && Object.hasOwn(value, 'todos')) {
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return parse(value.todos, depth + 1)
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}
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return null
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}
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export const parseTodos = (value: unknown): null | TodoItem[] => parse(value, 0)
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