<?php
namespace ArrayFunnel\Features\OrderBumps\REST;

defined( 'ABSPATH' ) || exit;

/**
 * CRUD endpoints for the order bumps shown on the checkout page.
 */
final class OrderBumpController extends \ArrayFunnel\Supports\BaseRestController {

    private \ArrayFunnel\Features\OrderBumps\Services\OrderBump $bump_module;

    public function __construct() {
        $this->bump_module = new \ArrayFunnel\Features\OrderBumps\Services\OrderBump( false );
        parent::__construct();
    }

    public function registerRoutes(): void {
        // GET/POST /arrayfunnel/v1/bumps
        register_rest_route( $this->namespace, '/bumps', [
            [
                'methods'             => \WP_REST_Server::READABLE,
                'callback'            => [ $this, 'getBumps' ],
                'permission_callback' => [ $this, 'checkPermission' ],
            ],
            [
                'methods'             => \WP_REST_Server::CREATABLE,
                'callback'            => [ $this, 'createBump' ],
                'permission_callback' => [ $this, 'checkPermission' ],
                'args'                => [
                    'title' => [
                        'sanitize_callback' => 'sanitize_text_field',
                    ],
                    'product_id' => [
                        'required'          => true,
                        'sanitize_callback' => 'absint',
                        'validate_callback' => function ( $value ) {
                            return (int) $value > 0;
                        },
                    ],
                    'condition_type' => [
                        'sanitize_callback' => 'sanitize_key',
                        'validate_callback' => function ( $value ) {
                            return in_array( (string) $value, [ 'all', 'product', 'category', 'cart_total' ], true );
                        },
                    ],
                    'template' => [
                        'sanitize_callback' => 'sanitize_key',
                        'validate_callback' => function ( $value ) {
                            return in_array( (string) $value, [ 'classic', 'highlight', 'minimal' ], true );
                        },
                    ],
                    'status' => [
                        'sanitize_callback' => 'absint',
                        'validate_callback' => function ( $value ) {
                            return in_array( (int) $value, [ 0, 1 ], true );
                        },
                    ],
                    'priority' => [
                        'sanitize_callback' => 'absint',
                        'validate_callback' => function ( $value ) {
                            return (int) $value >= 0 && (int) $value <= 999;
                        },
                    ],
                ],
            ],
        ] );

        // GET/PUT/DELETE /arrayfunnel/v1/bumps/{id}
        register_rest_route( $this->namespace, '/bumps/(?P<id>\d+)', [
            [
                'methods'             => \WP_REST_Server::READABLE,
                'callback'            => [ $this, 'getBump' ],
                'permission_callback' => [ $this, 'checkPermission' ],
            ],
            [
                'methods'             => \WP_REST_Server::EDITABLE,
                'callback'            => [ $this, 'updateBump' ],
                'permission_callback' => [ $this, 'checkPermission' ],
                'args'                => [
                    'id' => [
                        'required'          => true,
                        'sanitize_callback' => 'absint',
                        'validate_callback' => function ( $value ) {
                            return (int) $value > 0;
                        },
                    ],
                    'title' => [
                        'sanitize_callback' => 'sanitize_text_field',
                    ],
                    'product_id' => [
                        'sanitize_callback' => 'absint',
                        'validate_callback' => function ( $value ) {
                            return '' === $value || (int) $value > 0;
                        },
                    ],
                    'condition_type' => [
                        'sanitize_callback' => 'sanitize_key',
                        'validate_callback' => function ( $value ) {
                            return '' === $value || in_array( (string) $value, [ 'all', 'product', 'category', 'cart_total' ], true );
                        },
                    ],
                    'template' => [
                        'sanitize_callback' => 'sanitize_key',
                        'validate_callback' => function ( $value ) {
                            return '' === $value || in_array( (string) $value, [ 'classic', 'highlight', 'minimal' ], true );
                        },
                    ],
                    'status' => [
                        'sanitize_callback' => 'absint',
                        'validate_callback' => function ( $value ) {
                            return '' === $value || in_array( (int) $value, [ 0, 1 ], true );
                        },
                    ],
                ],
            ],
            [
                'methods'             => \WP_REST_Server::DELETABLE,
                'callback'            => [ $this, 'deleteBump' ],
                'permission_callback' => [ $this, 'checkPermission' ],
                'args'                => [
                    'id' => [
                        'required'          => true,
                        'sanitize_callback' => 'absint',
                        'validate_callback' => function ( $value ) {
                            return (int) $value > 0;
                        },
                    ],
                ],
            ],
        ] );
    }

    public function getBumps( \WP_REST_Request $request ): \WP_REST_Response {
        $page     = max( 1, (int) $request->get_param( 'page' ) );
        $per_page = min( 100, max( 1, (int) ( $request->get_param( 'per_page' ) ?? 20 ) ) );
        $offset   = ( $page - 1 ) * $per_page;

        $bumps = $this->bump_module->getBumps( $per_page, $offset );

        // Enrich with product data
        $enriched = array_map( function ( $bump ) {
            $product = wc_get_product( $bump->product_id );
            $bump->product_name  = $product ? $product->get_name() : '';
            $bump->product_price_value = $product ? (float) $product->get_price() : 0.0;
            $bump->product_price_formatted = $product ? wc_price( (float) $product->get_price() ) : '';
            $bump->product_image = $product ? wp_get_attachment_image_url( $product->get_image_id(), 'thumbnail' ) : '';
            $bump->display_settings = json_decode( $bump->display_settings ?? '{}', true );
            $bump->condition_value  = json_decode( $bump->condition_value ?? 'null', true );
            $bump->status = (int) $bump->status;
            return $bump;
        }, $bumps );

        $total_count = $this->bump_module->countBumps();

        return $this->success( [
            'items'       => $enriched,
            'total_count' => $total_count,
        ] );
    }

    public function getBump( \WP_REST_Request $request ): \WP_REST_Response|\WP_Error {
        $bump = $this->bump_module->getBump( (int) $request->get_param( 'id' ) );
        if ( ! $bump ) {
            return $this->error( __( 'Bump not found.', 'arrayfunnel' ), 404 );
        }
        $bump->display_settings = json_decode( $bump->display_settings ?? '{}', true );
        $bump->condition_value  = json_decode( $bump->condition_value ?? 'null', true );
        $bump->status = (int) $bump->status;
        return $this->success( $bump );
    }

    public function createBump( \WP_REST_Request $request ): \WP_REST_Response|\WP_Error {
        $product_id = (int) $request->get_param( 'product_id' );
        if ( ! $product_id || ! wc_get_product( $product_id ) ) {
            return $this->error( __( 'Valid product_id is required.', 'arrayfunnel' ), 400 );
        }

        $id = $this->bump_module->createBump( [
            'title'            => $request->get_param( 'title' ) ?? '',
            'product_id'       => $product_id,
            'condition_type'   => $request->get_param( 'condition_type' ) ?? 'all',
            'condition_value'  => $request->get_param( 'condition_value' ),
            'display_settings' => $request->get_param( 'display_settings' ) ?? [],
            'template'         => $request->get_param( 'template' ) ?? 'classic',
            'status'           => $request->get_param( 'status' ) ?? 1,
            'priority'         => $request->get_param( 'priority' ) ?? 0,
        ] );

        $bump = $this->bump_module->getBump( $id );
        return $this->success( $bump, 201 );
    }

    public function updateBump( \WP_REST_Request $request ): \WP_REST_Response|\WP_Error {
        $id = (int) $request->get_param( 'id' );
        $existing = $this->bump_module->getBump( $id );
        if ( ! $existing ) {
            return $this->error( __( 'Bump not found.', 'arrayfunnel' ), 404 );
        }

        $this->bump_module->updateBump( $id, $request->get_params() );
        $bump = $this->bump_module->getBump( $id );
        $bump->display_settings = json_decode( $bump->display_settings ?? '{}', true );
        return $this->success( $bump );
    }

    public function deleteBump( \WP_REST_Request $request ): \WP_REST_Response|\WP_Error {
        $id = (int) $request->get_param( 'id' );
        if ( ! $this->bump_module->getBump( $id ) ) {
            return $this->error( __( 'Bump not found.', 'arrayfunnel' ), 404 );
        }
        $this->bump_module->deleteBump( $id );
        return $this->success( [ 'deleted' => true ] );
    }
}