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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 actix_identity::Identity;
    use actix_web::{HttpResponse, Responder};
    use serde::{Deserialize, Serialize};

    use crate::errors::*;
    use crate::AppData;

    use db_core::Notification;

    #[derive(Default, PartialEq, Clone, Deserialize, Serialize)]
    pub struct NotificationResp {
        pub name: String,
        pub heading: String,
        pub message: String,
        pub received: i64,
        pub id: i32,
    }

    impl From<Notification> for NotificationResp {
        fn from(n: Notification) -> Self {
            NotificationResp {
                name: n.name.unwrap(),
                heading: n.heading.unwrap(),
                received: n.received.unwrap(),
                id: n.id.unwrap(),
                message: n.message.unwrap(),
            }
        }
    }

    impl NotificationResp {
        pub fn from_notifications(mut n: Vec<Notification>) -> Vec<Self> {
            let mut notifications = Vec::with_capacity(n.len());

            n.drain(0..).for_each(|x| {
                let y: NotificationResp = x.into();
                notifications.push(y)
            });

            notifications
        }
    }

    /// route handler that gets all unread notifications
    #[my_codegen::get(
        path = "crate::V1_API_ROUTES.notifications.get",
        wrap = "crate::api::v1::get_middleware()"
    )]
    pub async fn get_notification(
        data: AppData,
        id: Identity,
    ) -> ServiceResult<impl Responder> {
        let receiver = id.identity().unwrap();
        // TODO handle error where payload.to doesnt exist

        let notifications = data.db.get_all_unread_notifications(&receiver).await?;
        let notifications = NotificationResp::from_notifications(notifications);
        Ok(HttpResponse::Ok().json(notifications))
    }

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

        use super::*;
        use crate::api::v1::notifications::add::AddNotificationRequest;
        use crate::tests::*;
        use crate::*;

        #[actix_rt::test]
        pub async fn notification_get_works() {
            const NAME1: &str = "notifuser12";
            const NAME2: &str = "notiuser22";
            const PASSWORD: &str = "longpassworddomain";
            const EMAIL1: &str = "testnotification12@a.com";
            const EMAIL2: &str = "testnotification22@a.com";
            const HEADING: &str = "testing notifications get";
            const MESSAGE: &str = "testing notifications get message";

            let data = get_data().await;
            let data = &data;

            delete_user(data, NAME1).await;
            delete_user(data, NAME2).await;

            register_and_signin(data, NAME1, EMAIL1, PASSWORD).await;
            register_and_signin(data, NAME2, EMAIL2, PASSWORD).await;
            let (_creds, signin_resp) = signin(data, NAME1, PASSWORD).await;
            let (_creds2, signin_resp2) = signin(data, NAME2, PASSWORD).await;
            let cookies = get_cookie!(signin_resp);
            let cookies2 = get_cookie!(signin_resp2);
            let app = get_app!(data).await;

            let msg = AddNotificationRequest {
                to: NAME2.into(),
                heading: HEADING.into(),
                message: MESSAGE.into(),
            };

            let send_notification_resp = test::call_service(
                &app,
                post_request!(&msg, V1_API_ROUTES.notifications.add)
                    .cookie(cookies.clone())
                    .to_request(),
            )
            .await;
            assert_eq!(send_notification_resp.status(), StatusCode::OK);

            let get_notifications_resp = test::call_service(
                &app,
                test::TestRequest::get()
                    .uri(V1_API_ROUTES.notifications.get)
                    .cookie(cookies2.clone())
                    .to_request(),
            )
            .await;
            assert_eq!(get_notifications_resp.status(), StatusCode::OK);

            let mut notifications: Vec<NotificationResp> =
                test::read_body_json(get_notifications_resp).await;
            let notification = notifications.pop().unwrap();
            assert_eq!(notification.name, NAME1);
            assert_eq!(notification.message, MESSAGE);
            assert_eq!(notification.heading, HEADING);
        }
    }