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    /*
     * Copyright (C) 2022  Aravinth Manivannan <realaravinth@batsense.net>
     *
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero 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 Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program.  If not, see <https://www.gnu.org/licenses/>.
     */
    use std::env;

    use actix_identity::{CookieIdentityPolicy, IdentityService};
    use actix_web::{
        error::InternalError, http::StatusCode, middleware as actix_middleware, web::Data as WebData,
        web::JsonConfig, App, HttpServer,
    };
    use clap::{Parser, Subcommand};
    use static_assets::FileMap;
    use tracing::info;
    use tracing_actix_web::TracingLogger;

    mod api;
    mod conductor;
    mod ctx;
    mod db;
    mod errors;
    mod git;
    mod page;
    mod page_config;
    mod pages;
    mod preview;
    mod serve;
    mod settings;
    mod static_assets;
    mod subdomains;
    #[cfg(test)]
    mod tests;
    mod utils;

    pub use crate::api::v1::ROUTES as V1_API_ROUTES;
    use ctx::Ctx;
    pub use settings::Settings;

    pub const CACHE_AGE: u32 = 604800;

    pub const GIT_COMMIT_HASH: &str = env!("GIT_HASH");
    pub const VERSION: &str = env!("CARGO_PKG_VERSION");
    pub const PKG_NAME: &str = env!("CARGO_PKG_NAME");
    pub const PKG_DESCRIPTION: &str = env!("CARGO_PKG_DESCRIPTION");
    pub const PKG_HOMEPAGE: &str = env!("CARGO_PKG_HOMEPAGE");

    pub type AppCtx = WebData<ctx::ArcCtx>;

    lazy_static::lazy_static! {
        pub static ref FILES: FileMap = FileMap::new();
    }

    #[derive(Parser)]
    #[clap(author, version, about, long_about = None)]
    struct Cli {
        #[clap(subcommand)]
        command: Commands,
    }

    #[derive(Subcommand)]
    enum Commands {
        /// run database migrations
        Migrate,

        /// run server
        Serve,
    }

    #[actix_web::main]
    #[cfg(not(tarpaulin_include))]
    async fn main() -> std::io::Result<()> {
        if env::var("RUST_LOG").is_err() {
            env::set_var("RUST_LOG", "info");
        }

        pretty_env_logger::init();
        let cli = Cli::parse();

        info!(
            "{}: {}.\nFor more information, see: {}\nBuild info:\nVersion: {} commit: {}",
            PKG_NAME, PKG_DESCRIPTION, PKG_HOMEPAGE, VERSION, GIT_COMMIT_HASH
        );

        let settings = Settings::new().unwrap();

        match &cli.command {
            Commands::Migrate => db::get_db(&settings).await.migrate().await.unwrap(),
            Commands::Serve => {
                let ctx = Ctx::new(settings.clone()).await;
                let ctx = actix_web::web::Data::new(ctx);
                settings.init();
                serve(settings, ctx).await.unwrap();
            }
        }
        Ok(())
    }

    async fn serve(settings: Settings, ctx: AppCtx) -> std::io::Result<()> {
        let ip = settings.server.get_ip();
        let workers = settings.server.workers.unwrap_or_else(num_cpus::get);

        info!("Starting server on: http://{}", ip);
        HttpServer::new(move || {
            App::new()
                .wrap(TracingLogger::default())
                .wrap(actix_middleware::Compress::default())
                .app_data(ctx.clone())
                .app_data(get_json_err())
                .wrap(get_identity_service(&(settings.clone())))
                .wrap(
                    actix_middleware::DefaultHeaders::new()
                        .add(("Permissions-Policy", "interest-cohort=()")),
                )
                .wrap(actix_middleware::NormalizePath::new(
                    actix_middleware::TrailingSlash::Trim,
                ))
                .configure(services)
        })
        .workers(workers)
        .bind(ip)
        .unwrap()
        .run()
        .await
    }

    #[cfg(not(tarpaulin_include))]
    pub fn get_json_err() -> JsonConfig {
        JsonConfig::default().error_handler(|err, _| {
            //debug!("JSON deserialization error: {:?}", &err);
            InternalError::new(err, StatusCode::BAD_REQUEST).into()
        })
    }

    #[cfg(not(tarpaulin_include))]
    pub fn get_identity_service(settings: &Settings) -> IdentityService<CookieIdentityPolicy> {
        let cookie_secret = &settings.server.cookie_secret;
        IdentityService::new(
            CookieIdentityPolicy::new(cookie_secret.as_bytes())
                .path("/")
                .name("Authorization")
                //TODO change cookie age
                .max_age_secs(216000)
                .domain(&settings.server.domain)
                .secure(false),
        )
    }

    pub fn services(cfg: &mut actix_web::web::ServiceConfig) {
        crate::api::v1::services(cfg);
        crate::pages::services(cfg);
        crate::static_assets::services(cfg);
        crate::serve::services(cfg);
    }