﻿﻿<?php
header("Content-Type: application/json");
// Database connection
include('../include/config.php');

// Handle CRUD operations
$action = $_GET['action'] ?? '';
switch ($action) {
    case 'read':
        $id = $_GET['id'] ?? null;
        if ($id) {
            // Fetch a single banner by ID
            $query = "SELECT * FROM home_banner WHERE id = ? AND deleted_at IS NULL";
            $stmt = $con->prepare($query);
            $stmt->bind_param("i", $id);
        } else {
            // Fetch all banners
            $query = "SELECT * FROM home_banner WHERE deleted_at IS NULL";
            $stmt = $con->prepare($query);
        }
        $stmt->execute();
        $result = $stmt->get_result();
        $banners = [];
        while ($row = $result->fetch_assoc()) {
            $banner_id = $row['id'];
            // Fetch multiple images
            $image_query = "SELECT image_path FROM home_banner_images WHERE banner_id=?";
            $img_stmt = $con->prepare($image_query);
            $img_stmt->bind_param("i", $banner_id);
            $img_stmt->execute();
            $img_result = $img_stmt->get_result();
            $images = [];
            while ($image_row = $img_result->fetch_assoc()) {
                $images[] = $image_row['image_path'];
            }
            $row['multiple_images'] = $images;
            $banners[] = $row;
        }
        echo json_encode(['success' => true, 'data' => $id ? $banners[0] : $banners]);
        break;

    case 'create':
        // Insert a new banner
        $title = $_POST['title'] ?? '';
        $description = $_POST['description'] ?? '';
        $single_image = '';
        $upload_dir = '../home-banner/';
        // Handle single image upload (optional)
        if (!empty($_FILES['single_image']['name'])) {
            if (!is_dir($upload_dir)) {
                mkdir($upload_dir, 0777, true);
            }
            $single_image = basename($_FILES['single_image']['name']);
            move_uploaded_file($_FILES['single_image']['tmp_name'], $upload_dir . $single_image);
        }
        // Insert banner into the database
        $query = "INSERT INTO home_banner (title, description, single_image) 
                  VALUES ('$title', '$description', '$single_image')";
        $result = mysqli_query($con, $query);
        if ($result) {
            $banner_id = mysqli_insert_id($con); // Get the ID of the newly inserted banner
            // Handle multiple image uploads (optional)
            if (!empty($_FILES['multiple_images']['name'][0])) {
                foreach ($_FILES['multiple_images']['name'] as $key => $image_name) {
                    $image_path = basename($image_name);
                    move_uploaded_file($_FILES['multiple_images']['tmp_name'][$key], $upload_dir . $image_path);
                    // Insert each image into the home_banner_images table
                    $image_query = "INSERT INTO home_banner_images (banner_id, image_path) 
                                    VALUES ('$banner_id', '$image_path')";
                    mysqli_query($con, $image_query);
                }
            }
            echo json_encode(['success' => true, 'message' => 'Banner added successfully']);
        } else {
            echo json_encode(['success' => false, 'error' => mysqli_error($con)]);
        }
        break;

        case 'update':
            $id = $_POST['id'] ?? 0;
            $title = $_POST['title'] ?? '';
            $description = $_POST['description'] ?? '';
            $upload_dir = '../home-banner/';
        
            // Fetch the current number of images for the banner
            $image_query = "SELECT COUNT(*) AS image_count FROM home_banner_images WHERE banner_id=?";
            $img_stmt = $con->prepare($image_query);
            $img_stmt->bind_param("i", $id);
            $img_stmt->execute();
            $img_result = $img_stmt->get_result()->fetch_assoc();
            $existing_image_count = $img_result['image_count'];
        
            // Count the number of new images being uploaded
            $new_images_count = !empty($_FILES['multiple_images']['name'][0]) ? count($_FILES['multiple_images']['name']) : 0;
        
            // Validate the total number of images
            if ($existing_image_count + $new_images_count > 10) {
                echo json_encode(['success' => false, 'error' => 'You can only upload a maximum of 10 images.']);
                exit;
            }
        
            // Prepare the update query
            $query = "UPDATE home_banner 
                      SET title=?, description=?, updated_at=NOW() 
                      WHERE id=?";
            $stmt = $con->prepare($query);
            $stmt->bind_param("ssi", $title, $description, $id);
        
            // Handle single image update
            if (!empty($_FILES['single_image']['name'])) {
                if (!is_dir($upload_dir)) {
                    mkdir($upload_dir, 0777, true);
                }
                $single_image = basename($_FILES['single_image']['name']);
                move_uploaded_file($_FILES['single_image']['tmp_name'], $upload_dir . $single_image);
                // Update the query to include the single image
                $query = "UPDATE home_banner 
                          SET title=?, description=?, single_image=?, updated_at=NOW() 
                          WHERE id=?";
                $stmt = $con->prepare($query);
                $stmt->bind_param("sssi", $title, $description, $single_image, $id);
            }
        
            // Execute the update query
            if ($stmt->execute()) {
                // Handle multiple image updates
                if (!empty($_FILES['multiple_images']['name'][0])) {
                    foreach ($_FILES['multiple_images']['name'] as $key => $image_name) {
                        $image_path = basename($image_name);
                        move_uploaded_file($_FILES['multiple_images']['tmp_name'][$key], $upload_dir . $image_path);
                        // Insert each image into the home_banner_images table
                        $image_query = "INSERT INTO home_banner_images (banner_id, image_path) 
                                        VALUES (?, ?)";
                        $image_stmt = $con->prepare($image_query);
                        $image_stmt->bind_param("is", $id, $image_path);
                        $image_stmt->execute();
                    }
                }
                echo json_encode(['success' => true, 'message' => 'Banner updated successfully']);
            } else {
                echo json_encode(['success' => false, 'error' => $stmt->error]);
            }
            break;

            case 'delete_image':
                $banner_id = $_GET['banner_id'] ?? 0;
                $image = $_GET['image'] ?? '';
                $upload_dir = '../home-banner/';
            
                // Delete the image from the database
                $query = "DELETE FROM home_banner_images WHERE banner_id=? AND image_path=?";
                $stmt = $con->prepare($query);
                $stmt->bind_param("is", $banner_id, $image);
            
                if ($stmt->execute()) {
                    // Delete the image file from the server
                    if (file_exists($upload_dir . $image)) {
                        unlink($upload_dir . $image);
                    }
                    echo json_encode(['success' => true, 'message' => 'Image deleted successfully']);
                } else {
                    echo json_encode(['success' => false, 'error' => $stmt->error]);
                }
                break;

    case 'delete':
        // Soft delete a banner
        $id = $_GET['id'] ?? 0;
        $query = "UPDATE home_banner SET deleted_at=NOW() WHERE id=$id";
        $result = mysqli_query($con, $query);
        if ($result) {
            echo json_encode(['success' => true, 'message' => 'Banner deleted successfully']);
        } else {
            echo json_encode(['success' => false, 'error' => mysqli_error($con)]);
        }
        break;

    default:
        echo json_encode(['success' => false, 'error' => 'Invalid action']);
}
?>