mod html;
mod middleware;
mod pages;

use actix_web::{App, HttpServer, web};
use clap::Parser;
use serde::Deserialize;
use sqlx::PgPool;
use std::fs::File;
use std::io::Read;
use std::process::exit;
use toml::from_slice;

use middleware::MimeType;
use pages::{
    files::file,
    index,
    projects::{project, projects},
};

#[derive(Parser)]
#[command(name = "aindustries-be", version, about = "This is the amazing webserver for aindustries.be!", long_about = None)]
struct Cli {
    #[arg(
        short,
        long,
        value_name = "CONFIG",
        help = "Path to config file, defaults to /etc/aindustries-be/config.toml"
    )]
    config: Option<String>,
}

#[derive(Deserialize)]
struct Config {
    server: ServerConfig,
    database: DatabaseConfig,
}

#[derive(Deserialize)]
struct ServerConfig {
    assets: String,
    bind: String,
}

#[derive(Deserialize)]
struct DatabaseConfig {
    address: String,
    user: String,
    password: String,
    database_name: String,
}

struct AppState {
    assets: String,
    pool: PgPool,
}

#[actix_web::main]
async fn main() {
    let cli = Cli::parse();
    let config_file_path = cli
        .config
        .unwrap_or("/etc/aindustries-be/config.toml".to_string());
    let mut config_file = match File::open(&config_file_path) {
        Ok(config_file) => config_file,
        Err(e) => {
            eprintln!("Could not open config file ({config_file_path}): {e}");
            exit(1);
        }
    };
    let mut buf = vec![];
    if let Err(e) = config_file.read_to_end(&mut buf) {
        eprintln!("Could not read config file: {e}");
        exit(1);
    }
    let config: Config = match from_slice(&buf) {
        Ok(config) => config,
        Err(e) => {
            eprintln!("Could not parse config file {e}");
            exit(1);
        }
    };
    let bind_address = config.server.bind;
    let assets = config.server.assets;
    let database_address = format!(
        "postgres://{}:{}@{}/{}",
        config.database.user,
        config.database.password,
        config.database.address,
        config.database.database_name
    );
    let pool = match PgPool::connect(&database_address).await {
        Ok(pool) => pool,
        Err(e) => {
            eprintln!("Could not connect to database: {e}");
            exit(1);
        }
    };
    let assets = assets.replace("~", "/home/conta/Code/aindustries.be/assets");
    let data = web::Data::new(AppState { assets, pool });
    if let Ok(server) = HttpServer::new(move || {
        App::new().app_data(data.clone()).service(file).service(
            web::scope("")
                .wrap(MimeType::new("text/html"))
                .service(index)
                .service(projects)
                .service(project),
        )
    })
    .bind(bind_address)
    {
        match server.run().await {
            Ok(_) => {}
            Err(e) => {
                eprintln!("An error occurred: {e}");
            }
        }
    }
}