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/*
* Copyright (C) 2021  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 actix_web::{web, HttpResponse, Responder};
use derive_builder::Builder;
use serde::{Deserialize, Serialize};

use crate::Data;
use crate::{GIT_COMMIT_HASH, VERSION};

#[derive(Clone, Debug, Deserialize, Builder, Serialize)]
pub struct BuildDetails {
    pub version: &'static str,
    pub git_commit_hash: &'static str,
}

pub mod routes {
    pub struct Meta {
        pub build_details: &'static str,
        pub health: &'static str,
    }

    impl Meta {
        pub const fn new() -> Self {
            Self {
                build_details: "/api/v1/meta/build",
                health: "/api/v1/meta/health",
            }
        }
    }
}

/// emmits build details of the bninary
async fn build_details() -> impl Responder {
    let build = BuildDetails {
        version: VERSION,
        git_commit_hash: &GIT_COMMIT_HASH,
    };
    HttpResponse::Ok().json(build)
}

#[derive(Clone, Debug, Deserialize, Builder, Serialize)]
/// Health check return datatype
pub struct Health {
    db: bool,
}

/// checks all components of the system
async fn health(data: web::Data<Data>) -> impl Responder {
    use sqlx::Connection;

    let mut resp_builder = HealthBuilder::default();
    resp_builder.db(false);
    if let Ok(mut con) = data.db.acquire().await {
        if let Ok(_) = con.ping().await {
            resp_builder.db(true);
        }
    };

    HttpResponse::Ok().json(resp_builder.build().unwrap())
}

pub fn services(cfg: &mut web::ServiceConfig) {
    use crate::define_resource;
    use crate::V1_API_ROUTES;

    define_resource!(
        cfg,
        V1_API_ROUTES.meta.build_details,
        Methods::Get,
        build_details
    );
    define_resource!(cfg, V1_API_ROUTES.meta.health, Methods::Get, health);
}

#[cfg(test)]
mod tests {
    use actix_web::{http::StatusCode, test, App};

    use super::*;
    use crate::api::v1::new_services;
    use crate::*;

    #[actix_rt::test]
    async fn build_details_works() {
        //       const GET_URI: &str = "/api/v1/meta/build";
        let mut app = test::init_service(App::new().configure(new_services)).await;

        let resp = test::call_service(
            &mut app,
            test::TestRequest::get()
                .uri(V1_API_ROUTES.meta.build_details)
                .to_request(),
        )
        .await;
        assert_eq!(resp.status(), StatusCode::OK);
    }

    #[actix_rt::test]
    async fn health_works() {
        //        const GET_URI: &str = "/api/v1/meta/health";

        println!("{}", V1_API_ROUTES.meta.health);
        let data = Data::new().await;
        let mut app = get_app!(data).await;

        let resp = test::call_service(
            &mut app,
            test::TestRequest::get()
                .uri(V1_API_ROUTES.meta.health)
                .to_request(),
        )
        .await;
        assert_eq!(resp.status(), StatusCode::OK);

        let health_resp: Health = test::read_body_json(resp).await;
        assert_eq!(health_resp.db, true);
    }
}