#![allow(dead_code)]
use std::path::Path;
use std::time::Duration;

use frxd::config::{Config, IndexSection, NodeSection, QuerySection};
use frxd::crypto::Keypair;
use frxd::index::Collection;
use frxd::message::{Envelope, QueryBody, TYPE_QUERY};
use frxd::relay;
use serde_json::Value;

pub fn config_for(dir: &Path, name: &str, relay_url: &str) -> Config {
    let config = Config {
        node: NodeSection {
            name: name.to_string(),
            id: None,
            listen: "127.0.0.1:0".to_string(),
            relays: vec![relay_url.to_string()],
            registry: None,
            ma_key: None,
            dev_bootstrap: true,
            responder: true,
        },
        query: QuerySection {
            max_results: 5,
            timeout_ms: 700,
        },
        index: IndexSection {
            data_dir: dir.join("data").display().to_string(),
        },
    };
    config.save_key(&Keypair::generate()).unwrap();
    config
}

pub fn collection(name: &str, path: &Path, shared: bool, exposure: &str) -> Collection {
    Collection {
        name: name.to_string(),
        path: path.display().to_string(),
        shared,
        exposure: exposure.to_string(),
    }
}

pub async fn spawn_relay() -> String {
    spawn_relay_with_capacity(256).await
}

pub async fn spawn_relay_with_capacity(capacity: usize) -> String {
    let (listener, addr) = relay::bind("127.0.0.1:0").await.unwrap();
    tokio::spawn(async move {
        let _ = relay::run(listener, capacity).await;
    });
    format!("http://{addr}")
}

pub fn free_port() -> u16 {
    let listener = std::net::TcpListener::bind("127.0.0.1:0").unwrap();
    listener.local_addr().unwrap().port()
}

pub fn query_envelope(key: &Keypair, text: &str, max_results: usize) -> Envelope {
    let body = QueryBody::new(text, max_results);
    Envelope::new(key, TYPE_QUERY, serde_json::to_value(&body).unwrap())
}

pub async fn challenge(client: &reqwest::Client, relay_url: &str, member: &str) -> Option<String> {
    let response = client
        .get(format!("{relay_url}/v1/challenge?member={member}"))
        .send()
        .await
        .unwrap();
    if !response.status().is_success() {
        return None;
    }
    let payload: Value = response.json().await.unwrap();
    payload
        .get("nonce")
        .and_then(Value::as_str)
        .map(str::to_string)
}

pub async fn register(client: &reqwest::Client, relay_url: &str, key: &Keypair) {
    poll(client, relay_url, key, 30).await;
}

pub async fn poll_messages(
    client: &reqwest::Client,
    relay_url: &str,
    key: &Keypair,
    timeout_ms: u64,
) -> Vec<Value> {
    let response = poll(client, relay_url, key, timeout_ms).await;
    if response.status() == reqwest::StatusCode::NO_CONTENT {
        return Vec::new();
    }
    let payload: Value = response.json().await.unwrap();
    payload
        .get("messages")
        .and_then(Value::as_array)
        .cloned()
        .unwrap_or_default()
}

pub fn messages_of_type(messages: &[Value], msg_type: &str) -> Vec<Value> {
    messages
        .iter()
        .filter(|m| m.get("type").and_then(Value::as_str) == Some(msg_type))
        .cloned()
        .collect()
}

pub fn client() -> reqwest::Client {
    reqwest::Client::builder()
        .timeout(Duration::from_secs(10))
        .build()
        .unwrap()
}

pub async fn ask(
    client: &reqwest::Client,
    addr: &str,
    text: &str,
    max: usize,
) -> (reqwest::StatusCode, String, Value) {
    let response = client
        .post(format!("http://{addr}/v1/local/query"))
        .json(&serde_json::json!({
            "text": text,
            "max_results": max,
            "timeout_ms": 700,
        }))
        .send()
        .await
        .unwrap();
    let status = response.status();
    let raw = response.text().await.unwrap();
    let value: Value = serde_json::from_str(&raw).unwrap();
    (status, raw, value)
}

pub async fn publish(
    client: &reqwest::Client,
    relay_url: &str,
    envelope: &Envelope,
) -> reqwest::Response {
    client
        .post(format!("{relay_url}/v1/publish"))
        .json(envelope)
        .send()
        .await
        .unwrap()
}

pub async fn unicast(
    client: &reqwest::Client,
    relay_url: &str,
    to: &str,
    envelope: &Envelope,
) -> reqwest::Response {
    client
        .post(format!("{relay_url}/v1/unicast?to={to}"))
        .json(envelope)
        .send()
        .await
        .unwrap()
}

pub async fn poll(
    client: &reqwest::Client,
    relay_url: &str,
    key: &Keypair,
    timeout_ms: u64,
) -> reqwest::Response {
    let member = key.public_hex();
    let nonce = challenge(client, relay_url, &member)
        .await
        .expect("relay challenge");
    let sig = key.sign(&frxd::crypto::poll_signing_bytes(&member, &nonce));
    client
        .get(format!(
            "{relay_url}/v1/poll?member={member}&nonce={nonce}&sig={sig}&timeout_ms={timeout_ms}"
        ))
        .send()
        .await
        .unwrap()
}