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//! The backend of `PermaplanT`.

#![recursion_limit = "1024"]
// Enable all lints apart from clippy::restriction by default.
// See https://rust-lang.github.io/rust-clippy/master/index.html#blanket_clippy_restriction_lints for as to why restriction is not enabled.
#![warn(clippy::pedantic)]
#![warn(clippy::nursery)]
#![warn(clippy::cargo)]
// Lints in clippy::restriction which seem useful.
#![warn(
    clippy::clone_on_ref_ptr,
    clippy::empty_structs_with_brackets,
    clippy::exit,
    clippy::expect_used,
    clippy::format_push_string,
    clippy::get_unwrap,
    clippy::if_then_some_else_none,
    clippy::indexing_slicing,
    clippy::integer_division,
    clippy::large_include_file,
    clippy::missing_docs_in_private_items,
    clippy::mixed_read_write_in_expression,
    clippy::multiple_inherent_impl,
    clippy::mutex_atomic,
    clippy::panic_in_result_fn,
    clippy::partial_pub_fields,
    clippy::print_stderr,
    clippy::print_stdout,
    clippy::rc_buffer,
    clippy::rc_mutex,
    clippy::rest_pat_in_fully_bound_structs,
    clippy::same_name_method,
    clippy::shadow_unrelated,
    clippy::str_to_string,
    clippy::string_to_string,
    clippy::suspicious_xor_used_as_pow,
    clippy::todo,
    clippy::try_err,
    clippy::unimplemented,
    clippy::unnecessary_self_imports,
    clippy::unneeded_field_pattern,
    clippy::unreachable,
    clippy::unseparated_literal_suffix,
    clippy::unwrap_in_result,
    clippy::unwrap_used,
    clippy::use_debug,
    clippy::verbose_file_reads
)]
// Cannot fix some errors because dependencies import them.
#![allow(clippy::multiple_crate_versions)]
// Clippy suggests lots of false "x.get(0)" => "x.first()"
#![allow(clippy::get_first)]
// We often want the same name per module (for instance every enum).
#![allow(clippy::module_name_repetitions)]

use actix_cors::Cors;
use actix_web::{http, middleware::Logger, App, HttpServer};
use config::{api_doc, auth::Config, routes};
use db::{
    connection::Pool,
    cronjobs::{cleanup_layers, cleanup_maps},
};
use std::sync::Arc;

pub mod config;
pub mod controller;
pub mod db;
pub mod error;
pub mod keycloak_api;
pub mod model;
/// Auto generated by diesel.
#[allow(clippy::missing_docs_in_private_items)]
pub mod schema;
pub mod service;
pub mod sse;
#[cfg(test)]
pub mod test;

/// Main function.
#[actix_web::main]
async fn main() -> std::io::Result<()> {
    let config = match config::app::Config::from_env() {
        Ok(config) => config,
        Err(e) => {
            return Err(std::io::Error::new(
                std::io::ErrorKind::Other,
                format!("Error reading configuration: {e}"),
            ));
        }
    };

    env_logger::init();

    log::info!("Configuration loaded: {:#?}", config);

    Config::init(&config).await;

    log::info!(
        "Starting server on {}:{}",
        config.bind_address.0,
        config.bind_address.1
    );

    let data_init = config::data::init(&config);
    let pool = data_init.pool.clone().into_inner();
    start_cronjobs(pool);

    HttpServer::new(move || {
        App::new()
            .wrap(cors_configuration())
            .app_data(data_init.pool.clone())
            .app_data(data_init.broadcaster.clone())
            .app_data(data_init.http_client.clone())
            .app_data(data_init.keycloak_api.clone())
            .configure(routes::config)
            .configure(api_doc::config)
            .wrap(Logger::default())
    })
    .shutdown_timeout(5)
    .bind(config.bind_address)?
    .run()
    .await
}

/// Create a CORS configuration for the server.
fn cors_configuration() -> Cors {
    Cors::default()
        .allowed_origin("http://localhost:5173")
        .allowed_origin("https://mr.permaplant.net")
        .allowed_origin("https://dev.permaplant.net")
        .allowed_origin("https://master.permaplant.net")
        .allowed_origin("https://www.permaplant.net")
        .allowed_origin("https://cloud.permaplant.net")
        .allowed_methods(vec!["GET", "POST", "PUT", "PATCH", "DELETE"])
        .allowed_headers(vec![
            http::header::AUTHORIZATION,
            http::header::ACCEPT,
            http::header::CONTENT_TYPE,
        ])
        .max_age(3600)
}

/// Start all scheduled jobs that get run in the backend.
fn start_cronjobs(pool: Arc<Pool>) {
    tokio::spawn(cleanup_maps(Arc::clone(&pool)));
    tokio::spawn(cleanup_layers(pool));
}