<?php
define("DUPLICATE_NAME_IN_SAME_GROUP", true);

// kiolvassa a választható emberek listáját
function read_electable_people(string $fname): array
{
    $s = file_get_contents($fname);

    // szétszedés csoportnév-csoporttag sorozatra
    $group_name_seq = preg_split("/(\*\*)|(__)/", trim($s), -1, PREG_SPLIT_NO_EMPTY);

    // csoportok feldolgozása egyenként
    $ep = [];
    for ($i = 0; $i < count($group_name_seq); $i += 2) {
        $group = trim($group_name_seq[$i]); // csoport kiolvasása
        $names = preg_split("/(\n)|(\r\n)/", trim($group_name_seq[$i + 1]), -1, PREG_SPLIT_NO_EMPTY); // nevek a csoportból

        foreach ($names as $name) {
            if (trim($name) === "") { // üres sorokat átugorja
                continue;
            }
            $new_rec = ["name" => $name, "group" => $group];
            if (DUPLICATE_NAME_IN_SAME_GROUP || !in_array($new_rec, $ep)) {
                $ep[] = $new_rec;
            }
        }
    }


    return $ep;
}

define("MINIMUM_NEEDLE_LENGTH", 3);

// keresés a nevek között
function search_in_names(array $records, string $needle): array
{
    $needle = trim($needle);

    if (strlen($needle) < MINIMUM_NEEDLE_LENGTH) {
        return [];
    }

    $hitpos_array = [];

    $filter = function(array $var) use (&$hitpos_array, $needle) : bool {
        $hitpos = stripos($var["name"], $needle);

        if ($hitpos != false) {
            $hitpos_array[] = $hitpos;
        }

        return $hitpos !== false;
    };

    $filter_res = array_values(array_filter($records, $filter));

    if (count($filter_res) > 0) {
        for ($i = 0; $i < count($filter_res); $i++) {
            $filter_res[$i]["hitpos"] = $hitpos_array[$i];
        }
    }

    return $filter_res;
}

// --------------------------------

define("ELECTABLE_PEOPLE_DATABASE", "data/electable_people_test.md");

$action = json_decode($_POST["action"]) ?? "none";

$res = "";

switch ($action) {
    case "search":
        {
            $needle = json_decode($_POST["needle"]);
            $p = read_electable_people(ELECTABLE_PEOPLE_DATABASE);
            $hits = search_in_names($p, $needle);
            $res = $hits;
        }
        break;
    case "none":
        break;
}

echo json_encode($res);

//$p = read_electable_people("data/electable_people_test.md");

return;