using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using System.Xml;
using HtmlAgilityPack;
using Newtonsoft.Json;
using PuppeteerSharp;

namespace baros_circular
{
    class Program
    {
        private const string archivePath = "doneIDs.txt";
        private const string configPath = "config.json";
        private static HttpClient webClient = new HttpClient();
        static async Task Main(string[] args)
        {
            if(baroHere() == false) return;

            var browser = await Puppeteer.LaunchAsync(new LaunchOptions
            {
                Headless = true,
                ExecutablePath = "/usr/bin/chromium",
                UserDataDir = "../chromiumData",
                DefaultViewport = new ViewPortOptions() { Width = 1920, Height = 1080 }
            });
            var page = await browser.NewPageAsync();
            await page.GoToAsync("https://warframe.fandom.com/wiki/Baro_Ki'Teer/Current_PC_Items");

            var content = await page.GetContentAsync();
            var htmlDoc = new HtmlDocument();
            htmlDoc.LoadHtml(content);
            var htmlBody = htmlDoc.DocumentNode.SelectSingleNode("//body");
            
            var targetNode = htmlDoc.DocumentNode.SelectSingleNode("//div[contains(@id, 'gallery-0')]");
            purgeSiblingsUp(targetNode, ref htmlBody);
            File.WriteAllText("debug.html", htmlDoc.DocumentNode.OuterHtml);
            await page.SetContentAsync(htmlDoc.DocumentNode.OuterHtml);
            Console.WriteLine("going to wait 30 seconds for loading images");
            await page.WaitForTimeoutAsync(30000);
            var targetElement = (await page.XPathAsync("//div[contains(@id, 'gallery-0')]"))?.FirstOrDefault();
            await targetElement.ScreenshotAsync("./diamondular.png");

            await PostToDiscord();
        }

        private static bool baroHere()
        {
            var ws = webClient.GetAsync("https://content.warframe.com/dynamic/worldState.php").Result;
            var wsText = "";
            using(StreamReader sr = new StreamReader(ws.Content.ReadAsStream()))
            {
                wsText = sr.ReadToEnd();
            }
        
            var worldState = JsonConvert.DeserializeObject<Worldstate>(wsText);

            //baro shows up twice if he's at "tennoconhub2", but fortunately he doesn't have a manifest
            //return worldState?.VoidTraders?.Where(bkt => bkt.Manifest?.Count() > 0)?.Count() > 0;
            Console.WriteLine("we're just going to say here's here, for test purpposes");
            return true;
        }

        private static async Task PostToDiscord()
        {
            ByteArrayContent fileContent = new ByteArrayContent(File.ReadAllBytes("./diamondular.png"));

            fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                Name = "File",
                FileName = "diamondular.png"
            };

            var content = new MultipartFormDataContent();

            content.Add(fileContent);
            await webClient.PostAsync(
                "[REDACTED]" //your webhook here
                content);
        }

        private static void purgeSiblingsUp(HtmlNode childNode, ref HtmlNode parentNode)
        {
            var immediateParent = childNode.ParentNode;
            immediateParent.RemoveAllChildren();
            immediateParent.AppendChild(childNode);
            if(immediateParent == parentNode)
            {
                return;
            }
            purgeSiblingsUp(immediateParent, ref parentNode);
        }
    }
}