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27 lines
1.5 KiB
TypeScript
27 lines
1.5 KiB
TypeScript
import { DEFAULTED_FIELDS } from './policy-defaults'
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import type { DefaultedField } from './policy-defaults'
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const OPTIONAL_FIELDS = ['processingPurposes', 'legalBasis', 'legitimateInterests',
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'storageDuration', 'dataSource', 'dataCategories'] as const
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const REQUIRED_FIELDS = ['title', 'processingDescription', 'recipients'] as const
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export type PolicyInput = Record<typeof REQUIRED_FIELDS[number], string> &
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Partial<Record<DefaultedField | typeof OPTIONAL_FIELDS[number], string | null>> & { isPublic?: boolean }
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/** Validate untrusted request values before callers use string operations. */
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export function parsePolicyInput(value: unknown): PolicyInput | null {
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if (!value || typeof value !== 'object' || Array.isArray(value)) return null
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const input = value as Record<string, unknown>
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if (input.isPublic !== undefined && typeof input.isPublic !== 'boolean') return null
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const fields = [...REQUIRED_FIELDS, ...OPTIONAL_FIELDS, ...DEFAULTED_FIELDS]
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for (const field of fields) {
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const text = input[field]
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if (text !== undefined && text !== null && (typeof text !== 'string' || text.length > 100000)) return null
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}
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const text = (key: string) => typeof input[key] === 'string' ? input[key].trim() : ''
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return {
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...Object.fromEntries([...OPTIONAL_FIELDS, ...DEFAULTED_FIELDS].map(key => [key, text(key) || null])),
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title: text('title'), processingDescription: text('processingDescription'), recipients: text('recipients'),
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...(input.isPublic === undefined ? {} : { isPublic: input.isPublic as boolean }),
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}
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}
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