Blazor/BlazorApp/Components/Pages/BlogPage/BlogService.cs

namespace BlazorApp.Components.Pages.BlogPage;

public class BlogService
{
    private static Lazy<BlogService> _instance = new Lazy<BlogService>(() => new BlogService());

    public static BlogService Instance = _instance.Value;
    
    private List<PostItem> posts = new List<PostItem>();
    private BlogService() {
        
    }

    public void CreatePost(PostItem post)
    {
        if(posts.Count > 0)
            post.Id = posts[^1].Id + 1;
        else 
            post.Id = 1;
        
        posts.Add(post);
    }
    
    public List<PostItem> ReadPosts()
    {
        foreach (var post in posts)
            Console.WriteLine($"READ {post.Id} : {post.Title} = {post.Content}");
        return this.posts;
    }

    public PostItem ReadPost(int id)
    {
        foreach (var post in posts)
        {
            if (post.Id == id)
                return post;
        }
        return null;
    }

    public void UpdatePost(PostItem post,string title, string content)
    {
        post.Title = title;
        post.Content = content;
    }


    public void DeletePost(int id)
    {
        PostItem post = ReadPost(id);
        posts.Remove(post);
    }
    
}