<?php

/*
 * Vendor templates (Admin > Vendor Templates) - making, changing (and the
 * fields ticked on the vendors made from it too), copying, archiving,
 * restoring and deleting them. The work is in functions/vendor_template.php;
 * a vendor is made from one by add_vendor, add_vendor_from_template and
 * add_vendor_template_to_clients (agent/post/vendor.php).
 */

defined('FROM_POST_HANDLER') || die("Direct file access is not allowed");

/* The template a request is for - or back to the list, saying it is gone. */
function vendorTemplateForRequest($vendor_template_id) {
    $row = vendorTemplateInfo($vendor_template_id);
    if (!$row) {
        flashAlert('That vendor template no longer exists.', 'error');
        redirect('vendor_templates.php');
    }
    return $row;
}

if (isset($_POST['add_vendor_template']) || isset($_POST['edit_vendor_template'])) {

    validateCSRFToken();

    $editing = isset($_POST['edit_vendor_template']);
    $before = $editing ? vendorTemplateForRequest($_POST['vendor_template_id'] ?? 0) : null;
    $vendor_template_id = $before ? intval($before['vendor_template_id']) : 0;

    $fields = vendorTemplateFields($_POST, $error);
    if (!$fields) {
        flashAlert(escapeHtml($error), 'error');
        redirect();
    }
    $vendor_template_id = vendorTemplateSave($vendor_template_id, $fields);
    $name = $fields['name'];

    if ($editing) {
        $changed = vendorTemplateChanged(vendorTemplateRowFields($before), $fields);
        $renamed = $before['vendor_template_name'] !== $name ? ' (was ' . $before['vendor_template_name'] . ')' : '';
        logAudit("Vendor Template", "Edit", "$session_name edited vendor template " . escapeSql($name . $renamed) . ($changed ? ' - ' . escapeSql(mb_strtolower(implode(', ', $changed))) : ''), 0, $vendor_template_id);

        // The fields ticked, on every vendor made from it too
        $labels = array_map(function ($field) {
            return $field['label'];
        }, vendorTemplateFieldLabels());
        $push = array_values(array_intersect(array_keys($labels), array_map('strval', array_filter((array) ($_POST['push'] ?? []), 'is_scalar'))));
        $pushed = $push ? vendorTemplatePush($vendor_template_id, $push) : [];
        $what = mb_strtolower(implode(', ', array_intersect_key($labels, array_flip($push))));
        foreach ($pushed as $vendor_id => $vendor) {
            logAudit("Vendor", "Edit", "$session_name updated vendor " . escapeSql($vendor['name']) . " from template " . escapeSql($name) . " - " . escapeSql($what), $vendor['client_id'], $vendor_id);
        }

        flashAlert("Vendor template <strong>" . escapeHtml($name) . "</strong> saved" . ($pushed ? ", and " . escapeHtml($what) . " changed on " . count($pushed) . " vendor" . (count($pushed) === 1 ? '' : 's') . " made from it" : ''));

        redirect();
    }

    // Made from one of a client's vendors - that vendor is now made from it
    $from_vendor = vendorRow($_POST['from_vendor'] ?? 0);
    if ($from_vendor) {
        mysqli_query($mysqli, "UPDATE vendors SET vendor_template_id = $vendor_template_id, vendor_updated_at = vendor_updated_at WHERE vendor_id = " . intval($from_vendor['vendor_id']));
    }

    logAudit("Vendor Template", "Create", "$session_name created vendor template " . escapeSql($name) . ($from_vendor ? " from vendor " . escapeSql($from_vendor['vendor_name']) . ($from_vendor['client_name'] !== null ? " of " . escapeSql($from_vendor['client_name']) : '') : ''), 0, $vendor_template_id);

    flashAlert("Vendor template <strong>" . escapeHtml($name) . "</strong> created");

    // A new one opens on its page
    redirect("vendor_template.php?vendor_template_id=$vendor_template_id");

}

if (isset($_GET['copy_vendor_template'])) {

    validateCSRFToken();

    $row = vendorTemplateForRequest($_GET['copy_vendor_template']);
    $new_id = vendorTemplateCopy($row['vendor_template_id']);
    $new_name = (string) vendorTemplateInfo($new_id)['vendor_template_name'];

    logAudit("Vendor Template", "Create", "$session_name copied vendor template " . escapeSql($row['vendor_template_name']) . " as " . escapeSql($new_name), 0, $new_id);

    flashAlert("Vendor template <strong>" . escapeHtml($row['vendor_template_name']) . "</strong> copied as <strong>" . escapeHtml($new_name) . "</strong>");

    redirect("vendor_template.php?vendor_template_id=$new_id");

}

if (isset($_GET['archive_vendor_template']) || isset($_GET['restore_vendor_template'])) {

    validateCSRFToken();

    $archive = isset($_GET['archive_vendor_template']);
    $row = vendorTemplateForRequest($archive ? $_GET['archive_vendor_template'] : $_GET['restore_vendor_template']);
    $vendor_template_id = intval($row['vendor_template_id']);

    // Archived, it isn't offered for new vendors; the ones made from it stay
    mysqli_query($mysqli, "UPDATE vendor_templates SET vendor_template_archived_at = " . ($archive ? 'NOW()' : 'NULL') . ", vendor_template_updated_at = vendor_template_updated_at
        WHERE vendor_template_id = $vendor_template_id");

    logAudit("Vendor Template", $archive ? "Archive" : "Restore", "$session_name " . ($archive ? 'archived' : 'restored') . " vendor template " . escapeSql($row['vendor_template_name']), 0, $vendor_template_id);

    flashAlert("Vendor template <strong>" . escapeHtml($row['vendor_template_name']) . "</strong> " . ($archive ? 'archived' : 'restored'), $archive ? 'error' : 'success');

    redirect();

}

if (isset($_GET['delete_vendor_template'])) {

    validateCSRFToken();

    $row = vendorTemplateForRequest($_GET['delete_vendor_template']);

    // The vendors made from it stay, no longer linked to it
    vendorTemplateDelete($row['vendor_template_id']);

    logAudit("Vendor Template", "Delete", "$session_name deleted vendor template " . escapeSql($row['vendor_template_name']), 0, intval($row['vendor_template_id']));

    flashAlert("Vendor template <strong>" . escapeHtml($row['vendor_template_name']) . "</strong> deleted", 'error');

    // From its own page, back to the list
    redirect(!empty($_GET['from_page']) ? 'vendor_templates.php' : null);

}