<?php
/* GET /api/customers.php            — Liste der Kunden mit letzten Berichten
 * GET /api/customers.php?id=<soc_id> — Kunden-Detail: Stammdaten + Aufträge + Berichte
 * GET /api/customers.php?q=<search>  — Filter per Name
 */
require_once __DIR__.'/_inc.php';

api_authenticate();
global $db, $user, $conf, $langs;

require_once DOL_DOCUMENT_ROOT.'/societe/class/societe.class.php';

$id = (int) ($_GET['id'] ?? 0);
$q  = (string) ($_GET['q'] ?? '');

/* ----- LISTE ----- */
if (!$id) {
    $where = "s.entity IN (".getEntity('societe').")";
    if ($q !== '') {
        $q_esc = $db->escape($q);
        $where .= " AND (s.nom LIKE '%$q_esc%' OR s.code_client LIKE '%$q_esc%' OR s.town LIKE '%$q_esc%')";
    }
    // Standardmäßig nur Kunden (client=1 oder 3) — keine reinen Lieferanten
    $where .= " AND (s.client = 1 OR s.client = 2 OR s.client = 3)";

    $sql = "SELECT s.rowid, s.nom, s.code_client, s.zip, s.town, s.phone, s.email,"
        ." (SELECT COUNT(*) FROM ".$db->prefix()."bericht b"
        ."    INNER JOIN ".$db->prefix()."commande c ON c.rowid = b.fk_element AND b.element_type='order' AND c.fk_soc = s.rowid) AS b_order,"
        ." (SELECT COUNT(*) FROM ".$db->prefix()."bericht b"
        ."    INNER JOIN ".$db->prefix()."facture f ON f.rowid = b.fk_element AND b.element_type='invoice' AND f.fk_soc = s.rowid) AS b_invoice,"
        ." (SELECT MAX(c2.date_commande) FROM ".$db->prefix()."commande c2 WHERE c2.fk_soc = s.rowid) AS last_order_date"
        ." FROM ".$db->prefix()."societe s"
        ." WHERE ".$where
        ." ORDER BY last_order_date DESC, s.nom ASC"
        ." LIMIT 200";
    $r = $db->query($sql);
    if (!$r) api_fail('DB-Fehler: '.$db->lasterror(), 500);
    $out = array();
    while ($o = $db->fetch_object($r)) {
        $bericht_count = (int) $o->b_order + (int) $o->b_invoice;
        $out[] = array(
            'id' => (int) $o->rowid,
            'name' => $o->nom,
            'code' => $o->code_client,
            'zip' => $o->zip,
            'town' => $o->town,
            'phone' => $o->phone,
            'email' => $o->email,
            'bericht_count' => $bericht_count,
            'last_order_date' => $o->last_order_date ? $db->jdate($o->last_order_date) : null,
        );
    }
    api_ok(array('customers' => $out, 'count' => count($out)));
}

/* ----- DETAIL eines Kunden ----- */
$soc = new Societe($db);
if ($soc->fetch($id) <= 0) api_fail('Kunde nicht gefunden', 404);

// Aufträge des Kunden
$orders = array();
$ro = $db->query("SELECT c.rowid, c.ref, c.date_commande, c.fk_statut, c.total_ttc"
    ." FROM ".$db->prefix()."commande c"
    ." WHERE c.fk_soc = ".((int) $id)
    ." AND c.entity IN (".getEntity('commande').")"
    ." ORDER BY c.date_commande DESC, c.rowid DESC LIMIT 50");
if ($ro) {
    while ($o = $db->fetch_object($ro)) {
        // Bericht-Count pro Auftrag
        $rb = $db->query("SELECT COUNT(*) AS n FROM ".$db->prefix()."bericht WHERE element_type='order' AND fk_element = ".((int) $o->rowid));
        $bc = ($rb && ($rbo = $db->fetch_object($rb))) ? (int) $rbo->n : 0;
        $orders[] = array(
            'id' => (int) $o->rowid,
            'ref' => $o->ref,
            'date' => $db->jdate($o->date_commande),
            'status' => (int) $o->fk_statut,
            'total' => (float) $o->total_ttc,
            'bericht_count' => $bc,
        );
    }
}

// Rechnungen des Kunden
$invoices = array();
$ri = $db->query("SELECT f.rowid, f.ref, f.datef, f.fk_statut, f.total_ttc"
    ." FROM ".$db->prefix()."facture f"
    ." WHERE f.fk_soc = ".((int) $id)
    ." AND f.entity IN (".getEntity('facture').")"
    ." ORDER BY f.datef DESC, f.rowid DESC LIMIT 50");
if ($ri) {
    while ($f = $db->fetch_object($ri)) {
        $invoices[] = array(
            'id' => (int) $f->rowid,
            'ref' => $f->ref,
            'date' => $db->jdate($f->datef),
            'status' => (int) $f->fk_statut,
            'total' => (float) $f->total_ttc,
        );
    }
}

// Alle Berichte des Kunden (über Joins)
$reports = array();
$rr = $db->query(
    "SELECT b.rowid, b.ref, b.titel, b.status, b.datec, b.element_type, c.ref AS parent_ref"
    ." FROM ".$db->prefix()."bericht b"
    ." INNER JOIN ".$db->prefix()."commande c ON c.rowid = b.fk_element"
    ." WHERE b.element_type = 'order' AND c.fk_soc = ".((int) $id)
    ." UNION "
    ."SELECT b.rowid, b.ref, b.titel, b.status, b.datec, b.element_type, f.ref AS parent_ref"
    ." FROM ".$db->prefix()."bericht b"
    ." INNER JOIN ".$db->prefix()."facture f ON f.rowid = b.fk_element"
    ." WHERE b.element_type = 'invoice' AND f.fk_soc = ".((int) $id)
    ." ORDER BY datec DESC LIMIT 100"
);
if ($rr) {
    while ($b = $db->fetch_object($rr)) {
        $reports[] = array(
            'id' => (int) $b->rowid,
            'ref' => $b->ref,
            'titel' => $b->titel,
            'status' => (int) $b->status,
            'datec' => $db->jdate($b->datec),
            'element_type' => $b->element_type,
            'parent_ref' => $b->parent_ref,
        );
    }
}

api_ok(array(
    'customer' => array(
        'id' => (int) $soc->id,
        'name' => $soc->name,
        'code' => $soc->code_client,
        'address' => $soc->address,
        'zip' => $soc->zip,
        'town' => $soc->town,
        'country' => $soc->country,
        'phone' => $soc->phone,
        'email' => $soc->email,
        'siret' => $soc->idprof1 ?? '',
        'vat' => $soc->tva_intra ?? '',
    ),
    'orders' => $orders,
    'invoices' => $invoices,
    'reports' => $reports,
));