// Copyright (c) [2024] SUSE LLC
//
// All Rights Reserved.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, contact SUSE LLC.
//
// To contact SUSE LLC about this file by physical or electronic mail, you may
// find current contact information at www.suse.com.

pub mod common;

use agama_lib::error::ServiceError;
use agama_lib::network::settings::{BondSettings, NetworkConnection};
use agama_lib::network::types::{DeviceType, SSID};
use agama_server::network::web::network_service;
use agama_server::network::{
    self,
    model::{self, AccessPoint, GeneralState, StateConfig},
    Adapter, NetworkAdapterError, NetworkState,
};

use async_trait::async_trait;
use axum::http::header;
use axum::{
    body::Body,
    http::{Method, Request, StatusCode},
    Router,
};
use common::body_to_string;
use serde_json::to_string;
use std::error::Error;
use tokio::{sync::broadcast, test};
use tower::ServiceExt;

async fn build_state() -> NetworkState {
    let general_state = GeneralState::default();
    let device = model::Device {
        name: String::from("eth0"),
        type_: DeviceType::Ethernet,
        ..Default::default()
    };
    let eth0 = model::Connection::new("eth0".to_string(), DeviceType::Ethernet);

    NetworkState::new(general_state, vec![], vec![device], vec![eth0])
}

async fn build_service(state: NetworkState) -> Result<Router, ServiceError> {
    let adapter = NetworkTestAdapter(state);
    let (tx, _rx) = broadcast::channel(16);
    network_service(adapter, tx).await
}

#[derive(Default)]
pub struct NetworkTestAdapter(network::NetworkState);

#[async_trait]
impl Adapter for NetworkTestAdapter {
    async fn read(&self, _: StateConfig) -> Result<network::NetworkState, NetworkAdapterError> {
        Ok(self.0.clone())
    }

    async fn write(&self, _network: &network::NetworkState) -> Result<(), NetworkAdapterError> {
        unimplemented!("Not used in tests");
    }
}

#[test]
async fn test_network_state() -> Result<(), Box<dyn Error>> {
    let state = build_state().await;
    let network_service = build_service(state).await?;

    let request = Request::builder()
        .uri("/state")
        .method(Method::GET)
        .body(Body::empty())
        .unwrap();

    let response = network_service.oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);
    let body = body_to_string(response.into_body()).await;
    assert!(body.contains(r#""wireless_enabled":false"#));
    Ok(())
}

#[test]
async fn test_change_network_state() -> Result<(), Box<dyn Error>> {
    let mut state = build_state().await;
    let network_service = build_service(state.clone()).await?;
    state.general_state.wireless_enabled = true;

    let request = Request::builder()
        .uri("/state")
        .method(Method::PUT)
        .header(header::CONTENT_TYPE, "application/json")
        .body(to_string(&state.general_state)?)
        .unwrap();

    let response = network_service.oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);
    let body = response.into_body();
    let body = body_to_string(body).await;
    assert_eq!(body, to_string(&state.general_state)?);
    Ok(())
}

#[test]
async fn test_network_connections() -> Result<(), Box<dyn Error>> {
    let state = build_state().await;
    let network_service = build_service(state.clone()).await?;

    let request = Request::builder()
        .uri("/connections")
        .method(Method::GET)
        .body(Body::empty())
        .unwrap();

    let response = network_service.oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);
    let body = body_to_string(response.into_body()).await;
    assert!(body.contains(r#""id":"eth0""#));
    Ok(())
}

#[test]
async fn test_network_devices() -> Result<(), Box<dyn Error>> {
    let state = build_state().await;
    let network_service = build_service(state.clone()).await?;

    let request = Request::builder()
        .uri("/devices")
        .method(Method::GET)
        .body(Body::empty())
        .unwrap();

    let response = network_service.oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);
    let body = body_to_string(response.into_body()).await;
    assert!(body.contains(r#""name":"eth0""#));
    Ok(())
}

#[test]
async fn test_network_wifis() -> Result<(), Box<dyn Error>> {
    let mut state = build_state().await;
    state.access_points = vec![
        AccessPoint {
            ssid: SSID("AgamaNetwork".as_bytes().into()),
            hw_address: "00:11:22:33:44:00".into(),
            ..Default::default()
        },
        AccessPoint {
            ssid: SSID("AgamaNetwork2".as_bytes().into()),
            hw_address: "00:11:22:33:44:01".into(),
            ..Default::default()
        },
    ];
    let network_service = build_service(state.clone()).await?;

    let request = Request::builder()
        .uri("/wifi")
        .method(Method::GET)
        .body(Body::empty())
        .unwrap();

    let response = network_service.oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);
    let body = body_to_string(response.into_body()).await;
    assert!(body.contains(r#""ssid":"AgamaNetwork""#));
    assert!(body.contains(r#""ssid":"AgamaNetwork2""#));
    Ok(())
}

#[test]
async fn test_add_bond_connection() -> Result<(), Box<dyn Error>> {
    let state = build_state().await;
    let network_service = build_service(state.clone()).await?;

    let eth0 = NetworkConnection {
        id: "eth2".to_string(),
        ..Default::default()
    };

    let bond0 = NetworkConnection {
        id: "bond0".to_string(),
        method4: Some("auto".to_string()),
        method6: Some("disabled".to_string()),
        interface: Some("bond0".to_string()),
        bond: Some(BondSettings {
            mode: "active-backup".to_string(),
            ports: vec!["eth0".to_string()],
            options: Some("primary=eth0".to_string()),
        }),
        ..Default::default()
    };

    let request = Request::builder()
        .uri("/connections")
        .header("Content-Type", "application/json")
        .method(Method::POST)
        .body(serde_json::to_string(&eth0)?)
        .unwrap();

    let response = network_service.clone().oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);

    let request = Request::builder()
        .uri("/connections")
        .header("Content-Type", "application/json")
        .method(Method::POST)
        .body(serde_json::to_string(&bond0)?)
        .unwrap();

    let response = network_service.clone().oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);

    let request = Request::builder()
        .uri("/connections")
        .method(Method::GET)
        .body(Body::empty())
        .unwrap();

    let response = network_service.clone().oneshot(request).await?;
    assert_eq!(response.status(), StatusCode::OK);
    let body = body_to_string(response.into_body()).await;
    assert!(body.contains(r#""id":"eth0""#));
    assert!(body.contains(r#""id":"bond0""#));
    assert!(body.contains(r#""mode":"active-backup""#));
    assert!(body.contains(r#""primary=eth0""#));

    Ok(())
}