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accounted/lib/import/shared/column-utils.ts
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TypeScript

/**
* Shared column-detection helpers for register imports
* (customers, suppliers, articles).
*/
export function normalize(header: string): string {
return header.toLowerCase().trim().replace(/[_\-./]/g, ' ')
}
export function matchesKeywords(header: string, keywords: string[]): boolean {
const normalized = normalize(header)
return keywords.some((kw) => normalized === kw || normalized.includes(kw))
}
/**
* Find the first column index whose header matches one of `keywords`,
* skipping any indices already taken by other columns.
*/
export function findColumn(
headers: string[],
keywords: string[],
taken: Set<number>,
): number | null {
for (let i = 0; i < headers.length; i++) {
if (taken.has(i)) continue
if (matchesKeywords(headers[i], keywords)) {
taken.add(i)
return i
}
}
return null
}
/** Trim a string-or-blank cell, returning null when empty. */
export function cellOrNull(value: unknown): string | null {
if (value === null || value === undefined) return null
const str = String(value).trim()
return str === '' ? null : str
}
/** Parse an integer payment term ("30 dagar" → 30) with a default fallback. */
export function parsePaymentTerms(value: unknown, fallback: number): number {
const str = cellOrNull(value)
if (!str) return fallback
const match = str.match(/-?\d+/)
if (!match) return fallback
const n = parseInt(match[0], 10)
if (isNaN(n) || n < 0 || n > 365) return fallback
return n
}
/**
* Normalize an org/personal number to its dedup key (digits only).
* Returns null for empty input or strings that contain no digits.
*/
export function normalizeOrgNumber(value: string | null): string | null {
if (!value) return null
return value.replace(/\D/g, '') || null
}
/**
* Normalize an email to its dedup key (trimmed + lowercased).
* Returns null for empty/whitespace-only input.
*/
export function normalizeEmail(value: string | null): string | null {
if (!value) return null
return value.trim().toLowerCase() || null
}
/**
* Lowercased dedup key for matching a row by name (articles, and any other
* importer that dedupes on a free-text name). Same rule as normalizeEmail.
*/
export function normalizeNameKey(value: string | null): string | null {
if (!value) return null
return value.trim().toLowerCase() || null
}