<?php
declare(strict_types=1);


namespace OneClickFormSync\Forms\WPForms;

if (!defined('ABSPATH')) {
    exit;
}

use OneClickFormSync\Forms\AbstractFormProvider;
use OneClickFormSync\Forms\DTO\NormalizedSubmission;
use OneClickFormSync\Queue\QueueService;
use OneClickFormSync\Contracts\ConnectionRepositoryInterface;

/**
 * WPForms integration adapter.
 */
class WPFormsFormProvider extends AbstractFormProvider
{
    private QueueService $queueService;
    private ConnectionRepositoryInterface $connectionRepository;

    /**
     * WPFormsFormProvider constructor.
     *
     * @param QueueService $queueService
     * @param ConnectionRepositoryInterface $connectionRepository
     */
    public function __construct(
        QueueService $queueService,
        ConnectionRepositoryInterface $connectionRepository
    ) {
        $this->queueService = $queueService;
        $this->connectionRepository = $connectionRepository;
    }

    /**
     * @inheritDoc
     */
    public function getId(): string
    {
        return 'wpforms';
    }

    /**
     * @inheritDoc
     */
    public function getName(): string
    {
        return __('WPForms', '1-click-form-sync');
    }

    /**
     * @inheritDoc
     */
    public function isAvailable(): bool
    {
        return class_exists('WPForms\WPForms') || class_exists('WPForms_Lite') || function_exists('wpforms');
    }

    /**
     * @inheritDoc
     */
    public function register(): void
    {
        if (!$this->isAvailable()) {
            return;
        }

        // Register custom settings tab/section inside WPForms builder Settings
        add_filter('wpforms_builder_settings_sections', [$this, 'addSettingsSection'], 20, 2);
        add_action('wpforms_form_settings_panel_content', [$this, 'renderSettingsPanel'], 20, 1);
        add_action('admin_enqueue_scripts', [$this, 'enqueueBuilderAssets']);

        // Capture submissions
        add_action('wpforms_process_complete', [$this, 'processSubmission'], 10, 4);
    }

    /**
     * Add settings section tab sidebar in WPForms builder.
     *
     * @param array $sections
     * @param array $form_data
     * @return array
     */
    public function addSettingsSection(array $sections, array $form_data): array
    {
        $sections['oneclickformsync'] = esc_html__('1 Click Form Sync', '1-click-form-sync');
        return $sections;
    }

    /**
     * Render the settings fields inside the settings tab.
     *
     * @param object $builder_panel_settings
     * @return void
     */
    public function renderSettingsPanel($builder_panel_settings): void
    {
        if (!function_exists('wpforms_panel_field')) {
            return;
        }

        $form_data = $builder_panel_settings->form_data;
        $settings = $form_data['settings'] ?? [];

        $connections = $this->connectionRepository->findAll();
        $connectionOptions = ['' => __('Select Connection...', '1-click-form-sync')];
        foreach ($connections as $conn) {
            $connectionOptions[$conn->getId()] = $conn->getName() . ' (' . $conn->getEmail() . ')';
        }

        echo '<div class="wpforms-panel-content-section wpforms-panel-content-section-oneclickformsync">';
        echo '<div class="wpforms-panel-content-section-title">' . esc_html__('1 Click Form Sync Settings', '1-click-form-sync') . '</div>';

        // 1. Google Connection Select
        wpforms_panel_field(
            'select',
            'settings',
            'oneclickformsync_connection_id',
            $form_data,
            esc_html__('Google Connection', '1-click-form-sync'),
            [
                'options' => $connectionOptions,
            ]
        );

        // 2. Spreadsheet ID or URL
        wpforms_panel_field(
            'text',
            'settings',
            'oneclickformsync_spreadsheet_id',
            $form_data,
            esc_html__('Spreadsheet URL or ID', '1-click-form-sync'),
            [
                'placeholder' => 'https://docs.google.com/spreadsheets/d/.../edit',
            ]
        );

        // 3. Worksheet Name
        wpforms_panel_field(
            'text',
            'settings',
            'oneclickformsync_worksheet_name',
            $form_data,
            esc_html__('Worksheet Name', '1-click-form-sync'),
            [
                'default' => 'Sheet1',
            ]
        );

        // 4. Create Headers Toggle
        wpforms_panel_field(
            'toggle',
            'settings',
            'oneclickformsync_create_headers',
            $form_data,
            esc_html__('Create Headers if Empty', '1-click-form-sync'),
            [
                'default' => '1',
            ]
        );

        // 4.1 Header Background Color
        wpforms_panel_field(
            'text',
            'settings',
            'oneclickformsync_header_bg_color',
            $form_data,
            esc_html__('Header Background Color', '1-click-form-sync'),
            [
                'default'     => '#2d3748',
                'placeholder' => '#2d3748',
                'description' => __('Enter a hex color code (e.g. #2d3748) for the header background color.', '1-click-form-sync'),
            ]
        );

        // 4.2 Header Text Color
        wpforms_panel_field(
            'text',
            'settings',
            'oneclickformsync_header_fg_color',
            $form_data,
            esc_html__('Header Text Color', '1-click-form-sync'),
            [
                'default'     => '#ffffff',
                'placeholder' => '#ffffff',
                'description' => __('Enter a hex color code (e.g. #ffffff) for the header text color.', '1-click-form-sync'),
            ]
        );

        // 4.3 Freeze Header Row
        wpforms_panel_field(
            'toggle',
            'settings',
            'oneclickformsync_header_sticky',
            $form_data,
            esc_html__('Freeze Header Row (Sticky)', '1-click-form-sync'),
            [
                'default' => '1',
            ]
        );

        // 5. Mapping Mode
        wpforms_panel_field(
            'select',
            'settings',
            'oneclickformsync_mapping_mode',
            $form_data,
            esc_html__('Mapping Mode', '1-click-form-sync'),
            [
                'options' => [
                    'auto'   => __('Automatic Mapping', '1-click-form-sync'),
                    'custom' => __('Custom Mapping', '1-click-form-sync'),
                ],
                'default' => 'auto',
                'class'   => 'oneclickformsync-mapping-mode-select',
            ]
        );

        // 6. Custom Field Mappings (Textarea)
        wpforms_panel_field(
            'textarea',
            'settings',
            'oneclickformsync_custom_mapping_text',
            $form_data,
            esc_html__('Custom Field Mappings', '1-click-form-sync'),
            [
                'placeholder' => "First Name = 1\nEmail = 2\nDate = {submission_date} | | raw",
                'description' => __('Enter each mapping on a new line. Format: Sheet Column = Field ID | Default Value | Formatting (raw, uppercase, lowercase). To find field IDs, look at the fields in the WPForms builder (e.g. 1, 2, 3).', '1-click-form-sync'),
            ]
        );

        // 7. Metadata Column Switches
        echo '<div class="oneclickformsync-meta-options-row">';
        echo '<h4 style="margin: 15px 0 10px 0; font-size: 14px; color: #4a5568;">' . esc_html__('Include Metadata Columns (Auto Mode)', '1-click-form-sync') . '</h4>';

        $metaFields = [
            'oneclickformsync_include_submission_id'   => __('Submission ID', '1-click-form-sync'),
            'oneclickformsync_include_submission_date' => __('Date', '1-click-form-sync'),
            'oneclickformsync_include_submission_time' => __('Submission Time', '1-click-form-sync'),
            'oneclickformsync_include_form_id'         => __('Form ID', '1-click-form-sync'),
            'oneclickformsync_include_form_name'       => __('Form Name', '1-click-form-sync'),
            'oneclickformsync_include_page_url'        => __('Page URL', '1-click-form-sync'),
            'oneclickformsync_include_utm_source'      => __('UTM Source', '1-click-form-sync'),
            'oneclickformsync_include_utm_medium'      => __('UTM Medium', '1-click-form-sync'),
            'oneclickformsync_include_utm_campaign'    => __('UTM Campaign', '1-click-form-sync'),
            'oneclickformsync_include_utm_term'        => __('UTM Term', '1-click-form-sync'),
            'oneclickformsync_include_utm_content'     => __('UTM Content', '1-click-form-sync'),
        ];

        foreach ($metaFields as $key => $label) {
            wpforms_panel_field(
                'toggle',
                'settings',
                $key,
                $form_data,
                $label
            );
        }
        echo '</div>';

        // 8. Custom UTM / query parameters
        wpforms_panel_field(
            'text',
            'settings',
            'oneclickformsync_custom_utm_params',
            $form_data,
            esc_html__('Custom Tracking Parameters', '1-click-form-sync'),
            [
                'placeholder' => 'gclid, fbclid, msclkid',
                'description' => __('Enter a comma-separated list of additional query parameters to track.', '1-click-form-sync'),
            ]
        );

        echo '</div>';
    }

    /**
     * Enqueue builder scripts and styles using WordPress wp_enqueue functions.
     *
     * @param string $hook
     * @return void
     */
    public function enqueueBuilderAssets(string $hook): void
    {
        if (strpos($hook, 'wpforms') === false) {
            return;
        }

        $customCss = '.oneclickformsync-meta-options-row { margin-left: 20px; border-left: 3px solid #e2e8f0; padding-left: 15px; }';
        wp_register_style('oneclickformsync-wpforms-builder-style', false);
        wp_enqueue_style('oneclickformsync-wpforms-builder-style');
        wp_add_inline_style('oneclickformsync-wpforms-builder-style', $customCss);

        $customJs = "jQuery(document).ready(function($) {
            function toggleOneClickFormSyncFields() {
                var mode = $('#wpforms-panel-field-settings-oneclickformsync_mapping_mode').val();
                if (mode === 'custom') {
                    $('#wpforms-panel-field-settings-oneclickformsync_custom_mapping_text-row').show();
                    $('.oneclickformsync-meta-options-row').hide();
                } else {
                    $('#wpforms-panel-field-settings-oneclickformsync_custom_mapping_text-row').hide();
                    $('.oneclickformsync-meta-options-row').show();
                }
            }
            $(document).on('change', '#wpforms-panel-field-settings-oneclickformsync_mapping_mode', toggleOneClickFormSyncFields);
            toggleOneClickFormSyncFields();
        });";
        wp_register_script('oneclickformsync-wpforms-builder-js', false, ['jquery'], '1.0.0', true);
        wp_enqueue_script('oneclickformsync-wpforms-builder-js');
        wp_add_inline_script('oneclickformsync-wpforms-builder-js', $customJs);
    }

    /**
     * Process submission from WPForms.
     *
     * @param array $fields
     * @param array $entry
     * @param array $form_data
     * @param int $entry_id
     * @return void
     */
    public function processSubmission(array $fields, array $entry, array $form_data, int $entry_id): void
    {
        $settings = $form_data['settings'] ?? [];

        $connectionId  = $settings['oneclickformsync_connection_id'] ?? '';
        $spreadsheetId = $settings['oneclickformsync_spreadsheet_id'] ?? '';
        $worksheetName = $settings['oneclickformsync_worksheet_name'] ?? 'Sheet1';

        if (empty($connectionId) || empty($spreadsheetId) || empty($worksheetName)) {
            return;
        }

        // Parse custom mappings textarea to custom mapping array
        $customMappingText = $settings['oneclickformsync_custom_mapping_text'] ?? '';
        $customMapping = [];
        if (!empty($customMappingText)) {
            $lines = explode("\n", str_replace("\r", "", $customMappingText));
            foreach ($lines as $line) {
                $line = trim($line);
                if (empty($line)) {
                    continue;
                }
                $parts = explode('=', $line, 2);
                if (count($parts) === 2) {
                    $column = trim($parts[0]);
                    $rest   = trim($parts[1]);

                    $restParts = explode('|', $rest);
                    $fieldId = trim($restParts[0] ?? '');
                    $defaultValue = trim($restParts[1] ?? '');
                    $formatting = trim($restParts[2] ?? 'raw');

                    if ($column !== '') {
                        $customMapping[] = [
                            'sheet_column'  => $column,
                            'form_field'    => $fieldId,
                            'default_value' => $defaultValue,
                            'formatting'    => $formatting,
                        ];
                    }
                }
            }
        }

        $configSettings = [
            'connection_id'           => $connectionId,
            'spreadsheet_id'          => $spreadsheetId,
            'worksheet_name'          => $worksheetName,
            'mapping_mode'            => $settings['oneclickformsync_mapping_mode'] ?? 'auto',
            'custom_mapping'          => $customMapping,
            'create_headers'          => ($settings['oneclickformsync_create_headers'] ?? '') === '1' || ($settings['oneclickformsync_create_headers'] ?? '') === 'yes',
            'include_submission_id'   => ($settings['oneclickformsync_include_submission_id'] ?? '') === '1' || ($settings['oneclickformsync_include_submission_id'] ?? '') === 'yes',
            'include_submission_date' => ($settings['oneclickformsync_include_submission_date'] ?? '') === '1' || ($settings['oneclickformsync_include_submission_date'] ?? '') === 'yes',
            'include_submission_time' => ($settings['oneclickformsync_include_submission_time'] ?? '') === '1' || ($settings['oneclickformsync_include_submission_time'] ?? '') === 'yes',
            'include_form_id'         => ($settings['oneclickformsync_include_form_id'] ?? '') === '1' || ($settings['oneclickformsync_include_form_id'] ?? '') === 'yes',
            'include_form_name'       => ($settings['oneclickformsync_include_form_name'] ?? '') === '1' || ($settings['oneclickformsync_include_form_name'] ?? '') === 'yes',
            'include_page_url'        => ($settings['oneclickformsync_include_page_url'] ?? '') === '1' || ($settings['oneclickformsync_include_page_url'] ?? '') === 'yes',
            'include_utm_source'      => ($settings['oneclickformsync_include_utm_source'] ?? '') === '1' || ($settings['oneclickformsync_include_utm_source'] ?? '') === 'yes',
            'include_utm_medium'      => ($settings['oneclickformsync_include_utm_medium'] ?? '') === '1' || ($settings['oneclickformsync_include_utm_medium'] ?? '') === 'yes',
            'include_utm_campaign'    => ($settings['oneclickformsync_include_utm_campaign'] ?? '') === '1' || ($settings['oneclickformsync_include_utm_campaign'] ?? '') === 'yes',
            'include_utm_term'        => ($settings['oneclickformsync_include_utm_term'] ?? '') === '1' || ($settings['oneclickformsync_include_utm_term'] ?? '') === 'yes',
            'include_utm_content'     => ($settings['oneclickformsync_include_utm_content'] ?? '') === '1' || ($settings['oneclickformsync_include_utm_content'] ?? '') === 'yes',
            'custom_utm_params'       => $settings['oneclickformsync_custom_utm_params'] ?? '',
            'header_bg_color'         => $settings['oneclickformsync_header_bg_color'] ?? '',
            'header_fg_color'         => $settings['oneclickformsync_header_fg_color'] ?? '',
            'header_sticky'           => ($settings['oneclickformsync_header_sticky'] ?? '') === '1' || ($settings['oneclickformsync_header_sticky'] ?? '') === 'yes',
        ];

        $rawData = [
            'fields'    => $fields,
            'form_data' => $form_data,
        ];

        $submission = $this->normalizeSubmission($rawData, $configSettings);

        $submission = apply_filters('oneclickformsync_normalized_submission', $submission, $configSettings);

        $this->queueService->enqueue($submission, $configSettings);
    }

    /**
     * @inheritDoc
     */
    public function normalizeSubmission($submission, array $settings): NormalizedSubmission
    {
        $normalizer = new WPFormsSubmissionNormalizer();
        $customParams = $settings['custom_utm_params'] ?? '';
        return $normalizer->normalize($submission, $customParams);
    }
}