export type Confirmation = {
    actorId: number | null;
    actorName: string | null;
    date: string | null;
    reason: string | null;
};
export const agreementParties = ['proponent', 'candidate'] as const;
export function agreementObject(
    value: unknown,
): value is Record<string, unknown> {
    return value !== null && typeof value === 'object' && !Array.isArray(value);
}
const text = (value: unknown) => (typeof value === 'string' ? value : null);
export function readAgreement(value: unknown) {
    const record = agreementObject(value) ? value : null;
    const map =
        record && agreementObject(record.confirmations)
            ? record.confirmations
            : record &&
                Array.isArray(record.confirmations) &&
                record.confirmations.length === 0
              ? {}
              : null;
    const confirmations: Partial<
        Record<(typeof agreementParties)[number], Confirmation>
    > = {};
    for (const party of agreementParties) {
        if (!map || !Object.hasOwn(map, party)) continue;
        const stamp = agreementObject(map[party]) ? map[party] : {};
        const id = stamp.actor_id;
        confirmations[party] = {
            actorId:
                typeof id === 'number' && Number.isSafeInteger(id) && id > 0
                    ? id
                    : null,
            actorName: text(stamp.actor_name),
            date: text(stamp.date),
            reason: text(stamp.reason),
        };
    }
    return {
        kind:
            value == null
                ? ('absent' as const)
                : record
                  ? ('recorded' as const)
                  : ('malformed' as const),
        title: text(record?.title),
        terms: text(record?.terms),
        confirmationsState: map
            ? ('recorded' as const)
            : record?.confirmations == null
              ? ('absent' as const)
              : ('malformed' as const),
        confirmations,
        extraConfirmations:
            !!map &&
            Object.keys(map).some(
                (key) => !agreementParties.some((party) => party === key),
            ),
        legalStatus: text(record?.legal_signature_status),
    };
}