<?php
header("Content-Type: application/json; charset=utf-8");

// ---------------------------------------------------------
// 1) CONFIGURAZIONE
// ---------------------------------------------------------
$apiKey    = "info@claudiosironi.com_Qfh02D7sAvi2tcx3ZchHpusNaBquCKhJw81fEnkHe2ersQDVOex4IokhCCzaFAz1";
$fileToken = "filetoken://37bb07a8561409d281b32bcd023ff3dc33de92a8f65aae5af7";

// opzionale: passare un token via GET
if (isset($_GET['token']) && $_GET['token'] !== "") {
    $fileToken = $_GET['token'];
}

// ---------------------------------------------------------
// 2) PDF.CO → JSON2
// ---------------------------------------------------------
$endpoint = "https://api.pdf.co/v1/pdf/convert/to/json2";

$payload = [
    "url"          => $fileToken,
    "inline"       => true,
    "detectTables" => true,
    "pages"        => ""
];

$ch = curl_init($endpoint);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Content-Type: application/json",
    "x-api-key: $apiKey"
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);

if (!$response) {
    echo json_encode(["error" => "Errore CURL: " . curl_error($ch)]);
    curl_close($ch);
    exit;
}

curl_close($ch);

$json = json_decode($response, true);

if (!isset($json["body"]["document"]["page"]["row"])) {
    echo json_encode([
        "error" => true,
        "message" => "JSON PDF.co non contiene tabelle utili",
        "raw" => $json
    ]);
    exit;
}

$rows = $json["body"]["document"]["page"]["row"];

// ---------------------------------------------------------
// 3) FUNZIONI UTILITARIE
// ---------------------------------------------------------

// Formato A – 291 02F
function isCodeTypeA($txt)
{
    return preg_match('/^\d{3}\s+[0-9A-Z]{2,3}$/', $txt);
}

// Estrai blocchi tipo "499 3A 14 5.475"
function extractTypeCBlocks($line)
{
    preg_match_all(
        '/(\d{3})\s+([0-9A-Z]{1,3})\s+(\d{2})\s+(\d{1,2}\.\d{3})/',
        $line,
        $m,
        PREG_SET_ORDER
    );

    $out = [];
    foreach ($m as $b) {
        $out[] = [
            "codice"     => $b[1],
            "variante"   => $b[2],
            "dimensione" => $b[3],
            "prezzo"     => floatval(str_replace(".", "", $b[4]))
        ];
    }
    return $out;
}

// ---------------------------------------------------------
// 4) PARSER UNICO (GESTISCE TUTTI I FORMATI)
// ---------------------------------------------------------
$items = [];

$currentCode  = null;
$currentDesc  = "";
$currentPrices = [];

foreach ($rows as $row) {

    // Ricostruisco la riga
    $line = "";
    foreach ($row["column"] as $col) {
        if (!isset($col["text"]["text"])) continue;
        $t = trim($col["text"]["text"]);
        if ($t !== "") $line .= " " . $t;
    }
    $line = trim($line);
    if ($line === "") continue;

    // ---------------------------------------------------------
    // 4A — FORMATO CASSINA A (FIX prezzi concatenati)
    // ---------------------------------------------------------
    if (preg_match('/^(\d{3}\s+[0-9A-Z]{2,3})\s+(.*)$/', $line, $mA)) {

        $codice = trim($mA[1]);
        $resto  = trim($mA[2]);

        // Estrae TUTTI i prezzi concatenati (es. "10,808.9906.460...")
        preg_match_all('/\d{1,2}[.,]\d{2,3}/', $resto, $matchesPrezzi);

        if (count($matchesPrezzi[0]) >= 2) {

            // Descrizione SENZA prezzi
            $descr = trim(preg_replace('/\d{1,2}[.,]\d{2,3}/', '', $resto));

            // Conversione valori
            $vals = array_map(function ($v) {
                return floatval(str_replace(",", ".", str_replace(".", "", $v)));
            }, $matchesPrezzi[0]);

            $items[] = [
                "type" => "A",
                "codice" => $codice,
                "descrizione" => $descr,
                "prezzi" => $vals
            ];

            continue;
        }
    }

    // ---------------------------------------------------------
    // 4B — FORMATO VECCHIO CASSINA (003 BC cromata … 8 prezzi)
    // ---------------------------------------------------------
    if (preg_match(
        '/^(\d{3}\s+[A-Z]{1,3})\s+([A-Za-zÀ-ù\s]+?)\s+((?:\d{1,2}[.,]\d{2,3}\s*){8,})$/',
        $line,
        $mB
    )) {
        $codice = trim($mB[1]);
        $descr  = trim($mB[2]);
        $valuesString = trim($mB[3]);

        preg_match_all('/\d{1,2}[.,]\d{2,3}/', $valuesString, $vv);

        $vals = array_map(function ($v) {
            return floatval(str_replace(",", ".", str_replace(".", "", $v)));
        }, $vv[0]);

        $categorie = ["Z", "Y", "X", "O", "L", "F/COL", "E/COM", "ALTRO"];

        $prezziMappati = [];
        foreach ($vals as $i => $v) {
            $key = $categorie[$i] ?? ("COL_" . ($i + 1));
            $prezziMappati[$key] = $v;
        }

        $items[] = [
            "type" => "B1",
            "codice" => $codice,
            "descrizione" => $descr,
            "prezzi" => $prezziMappati
        ];

        continue;
    }

    // ---------------------------------------------------------
    // 4C — FORMATO LISTINO2 (499 3A 14 5.475 ripetuti)
    // ---------------------------------------------------------
    $blocks = extractTypeCBlocks($line);

    if (!empty($blocks)) {

        $desc = $line;
        foreach ($blocks as $b) {
            $pattern = sprintf(
                '/%s\s+%s\s+%s\s+\d{1,2}\.\d{3}/',
                $b["codice"],
                $b["variante"],
                $b["dimensione"]
            );
            $desc = preg_replace($pattern, "", $desc);
        }

        $desc = trim($desc);

        $items[] = [
            "type" => "C",
            "descrizione" => $desc,
            "varianti" => $blocks
        ];

        continue;
    }
}


// ---------------------------------------------------------
// 5) OUTPUT FINALE
// ---------------------------------------------------------
echo json_encode([
    "status" => "ok",
    "total"  => count($items),
    "items"  => $items
], JSON_PRETTY_PRINT);