<?php
header("Content-Type: application/json");
header("Access-Control-Allow-Origin: *");

$q = $_GET["q"] ?? $_POST["q"] ?? "";
$limit = min((int)($_GET["limit"] ?? 10), 50);

if (!$q) {
    // Return stats
    $ch = curl_init("http://127.0.0.1:6333/collections/weval_skills");
    curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER=>true, CURLOPT_TIMEOUT=>5]);
    $col = json_decode(curl_exec($ch), true); curl_close($ch);
    echo json_encode(["ok"=>true, "collection"=>"weval_skills", "points"=>$col["result"]["points_count"]??0, "status"=>$col["result"]["status"]??"unknown"]);
    exit;
}

// Search by scrolling and filtering by payload text match
$ch = curl_init("http://127.0.0.1:6333/collections/weval_skills/points/scroll");
curl_setopt_array($ch, [
    CURLOPT_POST=>true, CURLOPT_RETURNTRANSFER=>true, CURLOPT_TIMEOUT=>10,
    CURLOPT_HTTPHEADER=>["Content-Type: application/json"],
    CURLOPT_POSTFIELDS=>json_encode([
        "limit" => 500,
        "with_payload" => true,
        "filter" => ["should" => [
            ["key"=>"name", "match"=>["text"=>$q]],
            ["key"=>"desc", "match"=>["text"=>$q]],
        ]]
    ])
]);
$resp = json_decode(curl_exec($ch), true); curl_close($ch);

$results = [];
foreach (($resp["result"]["points"] ?? []) as $p) {
    $pay = $p["payload"] ?? [];
    if (stripos($pay["name"]??"", $q) !== false || stripos($pay["desc"]??"", $q) !== false) {
        $results[] = $pay;
        if (count($results) >= $limit) break;
    }
}

// Fallback: grep /opt/ for matching SKILL.md
if (count($results) < 3) {
    $grep = trim(shell_exec("grep -rl \"" . escapeshellarg($q) . "\" /opt/*/skills/*/SKILL.md /opt/antigravity-awesome-skills/*/SKILL.md 2>/dev/null | head -5"));
    foreach (explode("\n", $grep) as $f) {
        if (!$f) continue;
        $results[] = ["name"=>basename(dirname($f)), "path"=>str_replace("/opt/","", $f), "source"=>"grep"];
    }
}

echo json_encode(["ok"=>true, "query"=>$q, "results"=>array_slice($results, 0, $limit), "count"=>count($results)]);