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/*
* A Configuration and Control UI for ODR-DabMux
* Copyright (C) 2024 Matthias P. Braendli
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
use std::net::SocketAddr;
use askama::Template;
use axum::{
Json,
Router,
extract::State,
http::StatusCode,
routing::{get, post},
};
use log::info;
use serde::Deserialize;
use tower_http::services::ServeDir;
use crate::config;
use crate::SharedState;
pub async fn serve(port: u16, shared_state: SharedState) {
let app = Router::new()
.route("/", get(dashboard))
.route("/settings", get(show_settings))
.route("/api/settings", post(post_settings))
.route("/api/set_rc", post(post_rc))
.nest_service("/static", ServeDir::new("static"))
/* For an example for timeouts and tracing, have a look at the git history */
.with_state(shared_state);
let listener = tokio::net::TcpListener::bind(("0.0.0.0", port)).await.unwrap();
axum::serve(listener,
app.into_make_service_with_connect_info::<SocketAddr>())
.await.unwrap()
}
#[derive(PartialEq)]
enum ActivePage {
Dashboard,
Settings,
}
impl ActivePage {
// Used by templates/head.html to include the correct js files in <head>
fn styles(&self) -> Vec<&'static str> {
match self {
ActivePage::Dashboard => vec!["dashboard.js", "main.js"],
ActivePage::Settings => vec!["settings.js", "main.js"],
}
}
}
#[derive(Template)]
#[template(path = "dashboard.html")]
struct DashboardTemplate<'a> {
title: &'a str,
page: ActivePage,
conf: config::Config,
params: Vec<crate::dabmux::Param>,
params_errors: Option<String>,
stats: Option<crate::dabmux::Stats>,
stats_errors: Option<String>,
}
async fn dashboard(State(state): State<SharedState>) -> DashboardTemplate<'static> {
let (conf, params_result, stats_result) = {
let mut st = state.lock().unwrap();
let params_result = st.dabmux.get_rc_parameters();
let stats_result = st.dabmux.get_stats();
info!("STATS: {:?}", stats_result);
(st.conf.clone(), params_result, stats_result)
};
let (params, params_errors) = match params_result {
Ok(v) => (v, None),
Err(e) => (Vec::new(), Some(format!("{}", e))),
};
let (stats, stats_errors) = match stats_result {
Ok(v) => (Some(v), None),
Err(e) => (None, Some(format!("{}", e))),
};
DashboardTemplate {
title: "Dashboard",
conf,
page: ActivePage::Dashboard,
params,
params_errors,
stats,
stats_errors,
}
}
#[derive(Deserialize)]
struct SetRc {
pub module : String,
pub param : String,
pub value : String,
}
async fn post_rc(
State(state): State<SharedState>,
Json(set_rc): Json<SetRc>) -> (StatusCode, String) {
let set_rc_result = {
let mut st = state.lock().unwrap();
st.dabmux.set_rc_parameter(&set_rc.module, &set_rc.param, &set_rc.value)
};
match set_rc_result {
Ok(()) => (StatusCode::OK, "".to_owned()),
Err(e) => (StatusCode::BAD_REQUEST, e.to_string()),
}
}
#[derive(Template)]
#[template(path = "settings.html")]
struct SettingsTemplate<'a> {
title: &'a str,
page: ActivePage,
conf: config::Config,
}
async fn show_settings(State(state): State<SharedState>) -> SettingsTemplate<'static> {
SettingsTemplate {
title: "Settings",
page: ActivePage::Settings,
conf: state.lock().unwrap().conf.clone(),
}
}
async fn post_settings(
State(state): State<SharedState>,
Json(conf): Json<config::Config>) -> (StatusCode, String) {
match conf.store() {
Ok(()) => {
state.lock().unwrap().conf.clone_from(&conf);
match conf.write_dabmux_json() {
Ok(()) => (StatusCode::OK, "".to_owned()),
Err(e) => (StatusCode::INTERNAL_SERVER_ERROR,
format!("Failed to write odr-dabmux config: {}", e.to_string()))
}
}
Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("Failed to write UI config: {}", e.to_string()))
}
}
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