use rustables::*;
use rustables::{expr::*, Chain, Rule, Table};
use std::{io::*, net::*};

const TABLE_NAME: &str = "ipblc4";
const CHAIN_NAME: &str = "ipblc";

fn main() -> Result<()> {
    /*let name = "blabla";
    let mut batch = Batch::new();
    let table = Table::new(ProtocolFamily::Ipv4).with_name(name);
    batch.add(&table, MsgType::Add);
    let mut chain = Chain::new(&table).with_name(name);
    batch.add(&chain, MsgType::Add);

    let toadd1: Ipv4Addr = "9.9.9.8".parse().unwrap();
    let toadd2: Ipv4Addr = "9.9.9.1".parse().unwrap();

    let mut setbuilder: SetBuilder<Ipv4Addr> = SetBuilder::new("s1", &table).unwrap();
    setbuilder.add(&toadd1);
    setbuilder.add(&toadd2);
    let (mut set, setelem) = setbuilder.finish();
    batch.add(&setelem, MsgType::Add);
    //batch.add(&set, MsgType::Add);
    set.family = ProtocolFamily::Ipv4;
    set.id = Some(5);
    set.flags = Some(0);
    set.userdata = Some("test".into());
    println!("{:?}", setelem);*/

    let get_table = || -> Result<Option<Table>> {
        let tables = list_tables().unwrap();
        for table in tables {
            if let Some(name) = table.get_name() {
                println!("Found table {}", name);

                if name == TABLE_NAME {
                    return Ok(Some(table));
                }
            }
        }

        Ok(None)
    };

    let get_chain = |table: &Table| -> Result<Option<Chain>> {
        let chains = list_chains_for_table(table).unwrap();
        for chain in chains {
            if let Some(name) = chain.get_name() {
                println!("Found chain {}", name);

                if name == CHAIN_NAME {
                    return Ok(Some(chain));
                }
            }
        }

        Ok(None)
    };

    let table = get_table().unwrap().expect("no table?");
    let chain = get_chain(&table).unwrap().expect("no chain?");

    let ip: IpAddr = "184.73.167.217".parse().unwrap();

    let cmprule = Rule::new(&chain).unwrap().saddr(ip).drop();
    println!("{:?}", cmprule);

    let mut gexpr = RawExpression::default();
    for e in cmprule.get_expressions().unwrap().iter() {
        if let Some(ExpressionVariant::Cmp(_)) = e.get_data() {
            gexpr = e.clone();
        }
    }

    let rules = list_rules_for_chain(&chain).unwrap();
    for rule in rules {
        let handle = rule.get_handle().unwrap();
        println!("handle {}", handle);
        let exprs = rule.get_expressions().unwrap();
        for expr in exprs.iter() {
            if let Some(ExpressionVariant::Cmp(_)) = expr.get_data() {
                if expr.clone() == gexpr {
                    println!("{:?}", expr.get_data());
                    println!("test");
                    break;
                }
            }
            //if expr.get_data()
            //if expr.
        }
    }

    //let mut set: Set<Ipv4Addr> = nft_set!(
    //    &CString::new("blabla").unwrap(),
    //    32,
    //    &table,
    //    ProtoFamily::Ipv4 //ProtoFamily::Ipv4;
    //                      //[&toadd1,&toadd2,]
    //);
    ////println!("{:?}", set.0);
    //set.add(&toadd1);
    //set.add(&toadd2);
    //batch.add(&set, MsgType::Add);

    //let mut rule = Rule::new(&chain)
    //    .unwrap()
    //    .with_expr(
    //        HighLevelPayload::Network(NetworkHeaderField::IPv4(IPv4HeaderField::Saddr)).build(),
    //    )
    //    .with_expr(Lookup::new(&set).unwrap())
    //    .with_expr(Immediate::new_verdict(VerdictKind::Accept));
    //println!("{:?}", rule);
    //batch.add(&rule, rustables::MsgType::Add);

    //match batch.send() {
    //    Ok(o) => {}
    //    Err(e) => {
    //        println!("{e}");
    //    }
    //}

    //rule.add_expr(&nft_expr!(payload ipv4 saddr));
    //#[rustfmt::skip]
    //rule.add_expr(&nft_expr!(lookup &set));
    //rule.add_expr(&nft_expr!(ct state));
    //rule.add_expr(&nft_expr!(verdict drop));
    //batch.add(&rule, MsgType::Add);
    //let finalized_batch = batch.finalize();
    //send_and_process(&finalized_batch)?;

    Ok(())
}

#[allow(dead_code)]
#[derive(Debug)]
struct Error(String);

impl<T: std::error::Error> From<T> for Error {
    fn from(error: T) -> Self {
        Error(error.to_string())
    }
}