use clap::Parser;
use crate::backend::backend::build_api;
use neo4rs::Graph;
use rocket::Config;
use rocket_okapi::swagger_ui::{make_swagger_ui, SwaggerUIConfig};

mod backend;
mod graph;

/// Simple Route planning application
#[derive(Parser, Debug)]
#[command(version, about, long_about = None)]
struct Args {
    /// host of db
    #[arg(long, default_value_t=String::from("127.0.0.1"))]
    host: String,

    /// port of db
    #[arg(long, default_value_t = 7687)]
    port: u16,

    /// username of db
    #[arg(long,  default_value_t = String::new())]
    username: String,

    /// password of db
    #[arg(long,  default_value_t = String::new())]
    password: String,
}

fn main() {
    let args = Args::parse();
    let tokio = tokio::runtime::Runtime::new().expect("Failed to spawn tokio runtime");

    tokio.block_on(async move {
        let uri: String = format!("{}:{}", args.host, args.port);
        // connect to neo4j database
        let graph = Graph::new(uri, args.username, args.password).await.unwrap();

        // configure api port and interface
        let config = Config {
            address: "0.0.0.0".parse().unwrap(),
            port: 8081,
            ..Default::default()
        };

        // configure api and swagger ui
        let rock = rocket::custom(config)
            .manage(graph)
            .mount("/api/", build_api())
            .mount(
                "/docs/",
                make_swagger_ui(&SwaggerUIConfig {
                    url: "../api/openapi.json".to_owned(),
                    ..Default::default()
                }),
            );

        let rock = rock.launch().await;
        match rock {
            Ok(_) => println!("Rocket shut down gracefully."),
            Err(err) => println!("Rocket had an error: {}", err),
        };
    });
}