use std::vec;
use std::env;
use error_chain::error_chain;
use htmlentity::entity::{decode, ICodedDataTrait};
use futures::future::join_all;
use wreq::Client;
use wreq::Proxy;
use wreq_util::Emulation;
use crate::db;
use crate::providers::Provider;
use crate::util::cache::VideoCache;
use crate::util::flaresolverr::{FlareSolverrRequest, Flaresolverr};
use crate::util::requester;
use crate::videos::ServerOptions;
use crate::videos::{VideoItem};
use crate::DbPool;
use crate::util::requester::Requester;


error_chain! {
    foreign_links {
        Io(std::io::Error);
        HttpRequest(wreq::Error);
        JsonError(serde_json::Error);
    }
}

#[derive(Debug, Clone)]
pub struct ParadisehillProvider {
    url: String,
}
impl ParadisehillProvider {
    pub fn new() -> Self {
        ParadisehillProvider {
            url: "https://en.paradisehill.cc".to_string()
        }
    }
    async fn get(&self, cache:VideoCache, page: u8, options: ServerOptions) -> Result<Vec<VideoItem>> {
        let mut requester = options.requester.clone().unwrap();

        let url_str = format!("{}/all/?sort=created_at&page={}", self.url, page);
        
        let old_items = match cache.get(&url_str) {
            Some((time, items)) => {
                if time.elapsed().unwrap_or_default().as_secs() < 60 * 60 {
                    return Ok(items.clone());
                }
                else{
                    items.clone()
                }
            }
            None => {
                vec![]
            }
        };

        let text = requester.get(&url_str).await.unwrap();
        // Pass a reference to options if needed, or reconstruct as needed
        let video_items: Vec<VideoItem> = self.get_video_items_from_html(text.clone(), requester).await;
        if !video_items.is_empty() {
            cache.remove(&url_str);
            cache.insert(url_str.clone(), video_items.clone());
        } else{
            return Ok(old_items);
        }
        Ok(video_items)
    }

    async fn query(&self, cache: VideoCache, page: u8, query: &str, options: ServerOptions) -> Result<Vec<VideoItem>> {
        // Extract needed fields from options at the start
        let mut requester = options.requester.clone().unwrap();
        let search_string = query.replace(" ", "+");
        let url_str = format!(
            "{}/search/?pattern={}&page={}",
            self.url, search_string, page
        );
        // Check our Video Cache. If the result is younger than 1 hour, we return it.
        let old_items = match cache.get(&url_str) {
            Some((time, items)) => {
                if time.elapsed().unwrap_or_default().as_secs() < 60 * 60 {
                    return Ok(items.clone());
                }
                else{
                    let _ = cache.check().await;
                    return Ok(items.clone())
                }
            }
            None => {
                vec![]
            }
        };    
        let text = requester.get(&url_str).await.unwrap();
        let video_items: Vec<VideoItem> = self.get_video_items_from_html(text.clone(), requester).await;
        if !video_items.is_empty() {
            cache.remove(&url_str);
            cache.insert(url_str.clone(), video_items.clone());
        } else{
            return Ok(old_items);
        }
        Ok(video_items)
    }

    async fn get_video_items_from_html(&self, html: String, requester: Requester) -> Vec<VideoItem> {
        if html.is_empty() {
            println!("HTML is empty");
            return vec![];
        }
        let raw_videos = html
            .split("item list-film-item")
            .collect::<Vec<&str>>()[1..]
            .to_vec();
        let mut urls: Vec<String> = vec![];
        for video_segment in &raw_videos {
            // let vid = video_segment.split("\n").collect::<Vec<&str>>();
            // for (index, line) in vid.iter().enumerate() {
            //     println!("Line {}: {}", index, line.to_string().trim());
            // }
           
            let url_str = format!("{}{}",self.url, video_segment.split("<a href=\"").collect::<Vec<&str>>()[1]
                .split("\"")
                .collect::<Vec<&str>>()[0]
                .to_string());
            urls.push(url_str.clone());
            
        }
        let futures = urls.into_iter().map(|el| self.get_video_item(el.clone(), requester.clone()));
        let results: Vec<Result<VideoItem>> = join_all(futures).await;
        let video_items: Vec<VideoItem> = results
            .into_iter()
            .filter_map(Result::ok)
            .collect();   

        return video_items;
    }

    async fn get_video_item(&self, url_str: String, mut requester: Requester) -> Result<VideoItem> {
        let vid = requester.get(&url_str).await.unwrap();
        let mut title = vid.split("<meta property=\"og:title\" content=\"").collect::<Vec<&str>>()[1]
            .split("\"")
            .collect::<Vec<&str>>()[0].trim()
            .to_string();
        title = decode(title.as_bytes()).to_string().unwrap_or(title);
        let thumb = format!("{}{}",self.url, vid.split("<meta property=\"og:image\" content=\"").collect::<Vec<&str>>()[1]
            .split("\"")
            .collect::<Vec<&str>>()[0]
            .to_string());

        

        let video_url = vid.split("var videoList = ").collect::<Vec<&str>>()[1]
        .split("\"src\":\"").collect::<Vec<&str>>()[1]
            .split("\"").collect::<Vec<&str>>()[0].replace("\\", "").to_string();
        let id = video_url.split("/").collect::<Vec<&str>>().last().unwrap().split("_").collect::<Vec<&str>>()[0]
            .to_string();
        let video_item = VideoItem::new(
            id,
            title,
            video_url.clone(),
            "paradisehill".to_string(),
            thumb,
            0,
        )
        .aspect_ratio(0.697674419 as f32)
        ;

        return Ok(video_item);
    }
}

impl Provider for ParadisehillProvider {
    async fn get_videos(
        &self,
        cache: VideoCache,
        pool: DbPool,
        sort: String,
        query: Option<String>,
        page: String,
        per_page: String,
        options: ServerOptions,
    ) -> Vec<VideoItem> {
        let _ = pool;
        let _ = sort;
        let _ = per_page;
        let videos: std::result::Result<Vec<VideoItem>, Error> = match query {
            Some(q) => self.query(cache, page.parse::<u8>().unwrap_or(1), &q, options).await,
            None => self.get(cache, page.parse::<u8>().unwrap_or(1), options).await,
        };
        match videos {
            Ok(v) => v,
            Err(e) => {
                println!("Error fetching videos: {}", e);
                vec![]
            }
        }
    }
}