# invoice_dynamic_quarter.sieve
# Single Roundcube/Managesieve rule for dynamic invoice quarter routing.
# Import this as a standalone filter set or copy the rule into an existing set.

require ["fileinto", "date", "variables", "regex"];

# rule:[Financieel / Facturen / Dynamisch kwartaal]
if allof (
    header :contains "Subject" [
        "factuur",
        "invoice",
        "rekening",
        "nota",
        "betaalverzoek",
        "receipt",
        "orderbevestiging",
        "order confirmation",
        "betaling ontvangen",
        "payment received",
        "uw factuur",
        "your invoice",
        "je factuur"
    ],
    date :matches "Date" "year" "*"
) {
    set "jaar" "${1}";

    if date :regex "Date" "month" "^(0?[123])$" {
        set "kwartaal" "Q1";
    } elsif date :regex "Date" "month" "^(0?[456])$" {
        set "kwartaal" "Q2";
    } elsif date :regex "Date" "month" "^(0?[789])$" {
        set "kwartaal" "Q3";
    } else {
        set "kwartaal" "Q4";
    }

    fileinto "INBOX.Financieel.Facturen.${jaar}.${kwartaal}";
    stop;
}