use super::build_response;
use crate::api::rpc::RpcHandler;
use crate::bitcoin_status;
use crate::electrs_status;
use anyhow::Result;
use hyper::{Response, StatusCode};
use std::sync::Arc;

use super::{is_valid_app_id, ApiHandler};

impl ApiHandler {
    pub(super) async fn handle_container_logs_http(
        rpc: Arc<RpcHandler>,
        path: &str,
        cors_origin: &str,
    ) -> Result<Response<hyper::Body>> {
        let query = path
            .strip_prefix("/api/container/logs")
            .and_then(|s| s.strip_prefix('?'))
            .unwrap_or("");
        let params: std::collections::HashMap<String, String> = query
            .split('&')
            .filter_map(|p| {
                let mut it = p.splitn(2, '=');
                let k = it.next()?.to_string();
                let v = it.next()?.to_string();
                Some((k, v))
            })
            .collect();

        let app_id = params.get("app_id").map(|s| s.as_str()).unwrap_or("lnd");

        // Validate app_id format
        if !is_valid_app_id(app_id) {
            let body = serde_json::json!({ "error": "Invalid app_id" });
            let body_bytes = serde_json::to_vec(&body).unwrap_or_default();
            return Ok(build_response(
                StatusCode::BAD_REQUEST,
                "application/json",
                hyper::Body::from(body_bytes),
            ));
        }

        let lines = params
            .get("lines")
            .and_then(|s| s.parse::<u32>().ok())
            .unwrap_or(200);

        match rpc.get_container_logs_value(app_id, lines).await {
            Ok(value) => {
                let body = serde_json::json!({ "result": value });
                let body_bytes = serde_json::to_vec(&body).unwrap_or_default();
                Ok(Response::builder()
                    .status(StatusCode::OK)
                    .header("Content-Type", "application/json")
                    .header("Access-Control-Allow-Origin", cors_origin)
                    .header("Access-Control-Allow-Credentials", "true")
                    .header("Vary", "Origin")
                    .body(hyper::Body::from(body_bytes))
                    .unwrap())
            }
            Err(e) => {
                let body = serde_json::json!({ "error": e.to_string() });
                let body_bytes = serde_json::to_vec(&body).unwrap_or_default();
                Ok(Response::builder()
                    .status(StatusCode::INTERNAL_SERVER_ERROR)
                    .header("Content-Type", "application/json")
                    .header("Access-Control-Allow-Origin", cors_origin)
                    .header("Access-Control-Allow-Credentials", "true")
                    .header("Vary", "Origin")
                    .body(hyper::Body::from(body_bytes))
                    .unwrap())
            }
        }
    }

    pub(super) async fn handle_electrs_status() -> Result<Response<hyper::Body>> {
        let status = electrs_status::get_electrs_sync_status().await;
        let body = serde_json::to_vec(&status).unwrap_or_default();
        Ok(Response::builder()
            .status(StatusCode::OK)
            .header("Content-Type", "application/json")
            .header("Cache-Control", "no-store")
            .body(hyper::Body::from(body))
            .unwrap_or_else(|_| Response::new(hyper::Body::from("{}"))))
    }

    pub(super) async fn handle_bitcoin_status() -> Result<Response<hyper::Body>> {
        let status = bitcoin_status::get_bitcoin_status().await;
        let body = serde_json::to_vec(&status).unwrap_or_default();
        Ok(Response::builder()
            .status(StatusCode::OK)
            .header("Content-Type", "application/json")
            .header("Cache-Control", "no-store")
            .body(hyper::Body::from(body))
            .unwrap_or_else(|_| Response::new(hyper::Body::from("{}"))))
    }

    pub(super) async fn handle_lnd_connect_info(
        rpc: std::sync::Arc<super::super::rpc::RpcHandler>,
    ) -> Result<Response<hyper::Body>> {
        match rpc.handle_lnd_connect_info().await {
            Ok(val) => {
                let body = serde_json::to_vec(&val).unwrap_or_default();
                Ok(build_response(
                    StatusCode::OK,
                    "application/json",
                    hyper::Body::from(body),
                ))
            }
            Err(e) => Ok(Response::builder()
                .status(StatusCode::INTERNAL_SERVER_ERROR)
                .header("Content-Type", "application/json")
                .body(hyper::Body::from(
                    serde_json::json!({"error": e.to_string()}).to_string(),
                ))
                .unwrap()),
        }
    }

    pub(super) async fn handle_lnd_proxy(
        path: &str,
        cors_origin: &str,
    ) -> Result<Response<hyper::Body>> {
        let suffix = path.strip_prefix("/proxy/lnd").unwrap_or("/");
        let url = format!("http://127.0.0.1:8080{}", suffix);
        match reqwest::get(&url).await {
            Ok(resp) => {
                let status = resp.status().as_u16();
                let headers = resp.headers().clone();
                let body = resp.bytes().await.unwrap_or_default();
                let mut builder = Response::builder().status(status);
                if let Some(ct) = headers.get("content-type") {
                    if let Ok(s) = ct.to_str() {
                        builder = builder.header("Content-Type", s);
                    }
                }
                builder
                    .header("Access-Control-Allow-Origin", cors_origin)
                    .header("Access-Control-Allow-Credentials", "true")
                    .header("Vary", "Origin")
                    .body(hyper::Body::from(body))
                    .map_err(|e| anyhow::anyhow!("response build: {}", e))
            }
            Err(e) => {
                let body = serde_json::json!({ "error": e.to_string() });
                let body_bytes = serde_json::to_vec(&body).unwrap_or_default();
                Ok(Response::builder()
                    .status(StatusCode::BAD_GATEWAY)
                    .header("Content-Type", "application/json")
                    .header("Access-Control-Allow-Origin", cors_origin)
                    .header("Access-Control-Allow-Credentials", "true")
                    .header("Vary", "Origin")
                    .body(hyper::Body::from(body_bytes))
                    .unwrap())
            }
        }
    }
}