<?php
/**
 * MVP Setup page for DeclarationTVA module
 * Advanced multi-select PCG account mapping using Dolibarr native style
 */

// Load Dolibarr environment
if (file_exists('../../main.inc.php')) {
    $res = @include '../../main.inc.php';
} elseif (file_exists('../../../main.inc.php')) {
    $res = @include '../../../main.inc.php';
} else {
    $res = 0;
}

if (!$res) {
    die("Include of main fails");
}

// Libraries
require_once DOL_DOCUMENT_ROOT."/core/lib/admin.lib.php";
require_once DOL_DOCUMENT_ROOT.'/core/class/html.form.class.php';
require_once DOL_DOCUMENT_ROOT . '/custom/declarationtva/core/class/declarationtva_config.class.php';

// Access control
if (!$user->hasRight("declarationtva", "declarationtva", "admin")) {
    accessforbidden();
}

// Load language files
$langs->load("declarationtva@declarationtva");

// Initialize objects
$config = new DeclarationTVA_Config($db, $conf->entity);
$form = new Form($db);

// Handle form submission
$action = GETPOST('action', 'alpha');
if ($action == 'update_mappings') {
    $ca3_definitions = $config->getCA3LineDefinitions();
    $updated_count = 0;
    $debug_info = array();
    
    foreach ($ca3_definitions as $line => $definition) {
        $account_codes = GETPOST('account_codes_' . $line, 'array');
        $debug_info[] = "Line $line: " . (is_array($account_codes) ? implode(',', $account_codes) : 'empty');
        
        // Process all lines, even empty ones (to clear mappings)
        $result = $config->updateAccountMapping($line, $account_codes);
        if ($result) {
            $updated_count++;
        }
    }
    
    // Debug output
    if (empty($debug_info)) {
        setEventMessages("Debug: No form data received", null, 'warnings');
    } else {
        setEventMessages("Debug: " . implode(' | ', $debug_info), null, 'warnings');
    }
    
    if ($updated_count > 0) {
        setEventMessages($langs->trans("ConfigurationUpdated"), null, 'mesgs');
    } else {
        setEventMessages($langs->trans("NoChangesDetected"), null, 'warnings');
    }
}

// Get current mappings
$mappings_by_line = $config->getAccountMappingsByLine();
$accounts = $config->getAccountingAccounts();
$ca3_definitions = $config->getCA3LineDefinitions();

// Debug: Check if table exists and create if missing
$table_name = MAIN_DB_PREFIX . "declarationtva_account_mappings";
$check_table_sql = "SHOW TABLES LIKE '" . $table_name . "'";
$table_exists = $db->query($check_table_sql);
if ($table_exists && $db->num_rows($table_exists) > 0) {
    // Table exists - check if migration is needed
    $constraint_check = "SHOW INDEX FROM " . $table_name . " WHERE Key_name = 'uk_mapping_entity_line_account'";
    $constraint_result = $db->query($constraint_check);
    if ($constraint_result && $db->num_rows($constraint_result) > 0) {
        setEventMessages("Debug: Table structure is correct (supports multiple accounts per line)", null, 'mesgs');
    } else {
        setEventMessages("Debug: Table exists but needs migration - please deactivate and reactivate the module", null, 'warnings');
    }
} else {
    setEventMessages("Debug: Table $table_name does NOT exist - creating it now", null, 'warnings');
    
    // Create the table manually
    $create_table_sql = "CREATE TABLE IF NOT EXISTS `" . $table_name . "` (
        `rowid` int(11) NOT NULL AUTO_INCREMENT,
        `entity` int(11) NOT NULL DEFAULT 1,
        `ca3_line` varchar(8) NOT NULL COMMENT 'A1, A2, A3, A4, A5, 08, 09, 9B, 17, 20, 21, 22, 25, 26, 28, 29',
        `account_code` varchar(32) NOT NULL COMMENT 'PCG account code',
        `account_label` varchar(255) DEFAULT NULL,
        `vat_rate` decimal(5,2) DEFAULT NULL,
        `is_active` tinyint(1) DEFAULT 1,
        `created_date` datetime DEFAULT NULL,
        PRIMARY KEY (`rowid`),
        UNIQUE KEY `uk_mapping_entity_line_account` (`entity`, `ca3_line`, `account_code`),
        KEY `idx_ca3_line` (`ca3_line`),
        KEY `idx_account_code` (`account_code`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci";
    
    $create_result = $db->query($create_table_sql);
    if ($create_result) {
        setEventMessages("Debug: Table created successfully!", null, 'mesgs');
    } else {
        setEventMessages("Debug: Failed to create table: " . $db->lasterror(), null, 'errors');
    }
}
$section_headers = $config->getCA3SectionHeaders();

// Page title
$title = $langs->trans("DeclarationTVASetup");
llxHeader('', $title);

// Print page header
print load_fiche_titre($title, '', 'title_accountancy');

// Print notice information
print '<div class="info">';
print '<strong>Notice 4722 - Summary Table CA3 (3310-CA3-SD)</strong><br>';
print 'Configuration basée sur la structure officielle la plus récente du formulaire CA-3.';
print '</div><br>';

// Print configuration form
print '<form method="POST" action="' . $_SERVER['PHP_SELF'] . '">';
print '<input type="hidden" name="action" value="update_mappings">';
print '<input type="hidden" name="token" value="' . newToken() . '">';

print '<div class="fiche">';
print '<div class="titre">' . $langs->trans("DeclarationTVAPCGMapping") . '</div>';

// Group CA-3 lines by section
$lines_by_section = array();
foreach ($ca3_definitions as $line => $definition) {
    $section = $definition['section'];
    if (!isset($lines_by_section[$section])) {
        $lines_by_section[$section] = array();
    }
    $lines_by_section[$section][$line] = $definition;
}

// Print each section
foreach ($lines_by_section as $section_code => $lines) {
    $section_info = $section_headers[$section_code];
    
    // Section header
    print '<div class="titre">' . $section_info['title'] . '</div>';
    print '<div class="info">' . $section_info['description'] . '</div>';
    if (isset($section_info['notice'])) {
        print '<div class="info"><strong>Référence:</strong> ' . $section_info['notice'] . '</div>';
    }
    
    print '<table class="noborder centpercent">';
    print '<tr class="liste_titre">';
    print '<th>' . $langs->trans("CA3Line") . '</th>';
    print '<th>' . $langs->trans("LineLabel") . '</th>';
    print '<th>' . $langs->trans("Description") . '</th>';
    print '<th>' . $langs->trans("PCGAccounts") . '</th>';
    print '<th>' . $langs->trans("AccountSelection") . '</th>';
    print '</tr>';

    foreach ($lines as $line => $definition) {
        $selected_accounts = isset($mappings_by_line[$line]) ? $mappings_by_line[$line] : array();
        
        print '<tr>';
        print '<td><strong>' . $line . '</strong></td>';
        print '<td>' . $definition['label'] . '</td>';
        print '<td><small>' . $definition['description'] . '</small></td>';
        print '<td><small>' . $definition['pcg_accounts'] . '</small></td>';
        print '<td>';
        
        // Create account options array for Dolibarr multi-select
        $account_options = array();
        foreach ($accounts as $account) {
            $account_options[$account['account_number']] = $account['account_number'] . ' - ' . $account['label'];
        }
        
        // Use Dolibarr's native multi-select with search functionality
        print $form->multiselectarray('account_codes_' . $line, $account_options, $selected_accounts, 0, 0, '', 0, '200px');
        
        // Add helper text
        print '<br><small>' . $langs->trans("MultiSelectHelp") . '</small>';
        print '</td>';
        print '</tr>';
    }

    print '</table>';
    print '<br>';
}

print '<div class="titre">' . $langs->trans("Actions") . '</div>';
print '<input type="submit" class="button" value="' . $langs->trans("UpdateConfiguration") . '">';
print '</div>';

print '</form>';

// Print current configuration summary
print '<div class="fiche">';
print '<div class="titre">' . $langs->trans("CurrentConfiguration") . '</div>';

if (empty($mappings_by_line)) {
    print '<div class="info">' . $langs->trans("NoConfigurationFound") . '</div>';
} else {
    // Group by section for display
    $mappings_by_section = array();
    foreach ($mappings_by_line as $line => $account_codes) {
        if (isset($ca3_definitions[$line])) {
            $section = $ca3_definitions[$line]['section'];
            if (!isset($mappings_by_section[$section])) {
                $mappings_by_section[$section] = array();
            }
            $mappings_by_section[$section][$line] = $account_codes;
        }
    }
    
    foreach ($mappings_by_section as $section_code => $section_mappings) {
        $section_info = $section_headers[$section_code];
        
        print '<div class="titre">' . $section_info['title'] . '</div>';
        
        print '<table class="noborder centpercent">';
        print '<tr class="liste_titre">';
        print '<th>' . $langs->trans("CA3Line") . '</th>';
        print '<th>' . $langs->trans("SelectedAccounts") . '</th>';
        print '<th>' . $langs->trans("AccountCount") . '</th>';
        print '</tr>';

        foreach ($section_mappings as $line => $account_codes) {
            print '<tr>';
            print '<td><strong>' . $line . '</strong></td>';
            print '<td>' . implode(', ', $account_codes) . '</td>';
            print '<td>' . count($account_codes) . '</td>';
            print '</tr>';
        }
        print '</table>';
        print '<br>';
    }
}

print '</div>';

// Print footer
llxFooter();
?>
?>