using Tagger.Data;

namespace Tagger.Service;

public class PageProvider
{
    const string PageDirPath = "Pages";

    public PageProvider()
    {   
        Directory.CreateDirectory(PageDirPath);
    }

    public MarkdownPage? Get(string name)
    {
        string path = Path.Combine(PageDirPath, name);

        if (!File.Exists(path))
            return null;

        return new()
        {
            Title = name,
            Content = File.ReadAllText(path)
        };
    }

    public void Save(MarkdownPage page)
    {
        string path = Path.Combine(PageDirPath, page.Title);

        File.Delete(path);
        File.WriteAllText(path, page.Content);
    }

    public void Delete(string name)
    {
        string path = Path.Combine(PageDirPath, name);
        File.Delete(path);
    }

    public IEnumerable<string> List()
    {
        foreach(var i in Directory.GetFiles(PageDirPath))
        {
            //FileInfo fi = new(i);
            yield return i.Substring(PageDirPath.Length+1);
        }
    }
}