using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace WGneu.Documents {
    public abstract class Document {

        public Document(string title) {
            Title = title;
            Header = "Winzergenossenschaft Matzen";
            Footer = "Winzergenossenschaft für Matzen und Umgebung reg. Gen.m.b.H.";
            Date = DateTime.Today;
        }

        public string Title { get; set; }

        public string Header { get; set; }

        public string Footer { get; set; }

        public string FullDateString {
            get {
                return Date.ToString("dddd, d. MMMM yyyy");
            }
        }

        public DateTime Date { get; set; }

        private async Task<string> Render() {
            if (this is BusinessLetter bl) {
                return await Pdf.CompileRenderAsync("BusinessLetter.cshtml", bl);
            }
            throw new InvalidOperationException();
        }

        public async Task<string> Save() {
            // TODO tempfile
            await File.WriteAllTextAsync("razor_test.html", await Render());
            return "";
        }
    }
}