// util — shared helpers (kind=module). import "util" as util;

// Turn a title into a URL slug: lowercase, non-alnum -> hyphen, trim hyphens.
fn slugify(s) {
    let out = s.to_lower();
    out = regex::replace_all("[^a-z0-9]+", out, "-");
    out = regex::replace_all("(^-+|-+$)", out, "");
    if out == "" { out = "untitled"; }
    out
}

// Flatten a docs envelope { id, data, created_at, updated_at } into a single
// map (data fields + id/timestamps) for JSON responses.
fn shape_doc(doc) {
    let d = doc.data;
    d.id = doc.id;
    d.created_at = doc.created_at;
    d.updated_at = doc.updated_at;
    d
}

fn to_int_or(s, dflt) {
    if s == () { return dflt; }
    if type_of(s) == "i64" || type_of(s) == "int" { return s; }
    try { parse_int(s) } catch(e) { dflt }
}

// Atomic KV counter increment via set_if (CAS), bounded retries.
fn incr(coll_name, key) {
    let c = kv::collection(coll_name);
    let i = 0;
    while i < 8 {
        let cur = c.get(key);
        let n = if cur == () { 0 } else { cur };
        if c.set_if(key, cur, n + 1) { return n + 1; }
        i += 1;
    }
    // give up gracefully — a stale counter is not worth failing the request
    c.get(key)
}