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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::cell::RefCell;

    use actix_identity::Identity;
    use actix_web::http::header::ContentType;
    use serde::{Deserialize, Serialize};
    use tera::Context;

    use super::get_auth_middleware;
    use crate::db::Site;
    use crate::errors::ServiceResult;
    use crate::pages::errors::*;
    use crate::settings::Settings;
    use crate::AppCtx;

    use super::TemplateSiteEvent;

    pub use super::*;

    pub const DASH_HOME: TemplateFile = TemplateFile::new("dash_home", "pages/dash/index.html");

    pub struct Home {
        ctx: RefCell<Context>,
    }

    #[derive(Clone, Debug, Deserialize, Serialize, Eq, PartialEq)]
    pub struct TemplateSite {
        pub site: Site,
        pub view: String,
        pub last_update: Option<TemplateSiteEvent>,
    }

    impl TemplateSite {
        pub fn new(site: Site, last_update: Option<TemplateSiteEvent>) -> Self {
            let view = PAGES.dash.site.get_view(site.pub_id);
            Self {
                site,
                last_update,
                view,
            }
        }
    }

    impl CtxError for Home {
        fn with_error(&self, e: &ReadableError) -> String {
            self.ctx.borrow_mut().insert(ERROR_KEY, e);
            self.render()
        }
    }

    impl Home {
        pub fn new(settings: &Settings, sites: Option<&[TemplateSite]>) -> Self {
            let ctx = RefCell::new(context(settings));
            if let Some(sites) = sites {
                ctx.borrow_mut().insert(PAYLOAD_KEY, sites);
            }
            Self { ctx }
        }

        pub fn render(&self) -> String {
            TEMPLATES
                .render(DASH_HOME.name, &self.ctx.borrow())
                .unwrap()
        }
    }

    async fn get_site_data(ctx: &AppCtx, id: &Identity) -> ServiceResult<Vec<TemplateSite>> {
        let db_sites = ctx.db.list_all_sites(&id.identity().unwrap()).await?;
        let mut sites = Vec::with_capacity(db_sites.len());
        for site in db_sites {
            // TODO: impl method on DB to get latest "update" event
            let last_update = ctx
                .db
                .get_latest_update_event(&site.hostname)
                .await?
                .map(|e| e.into());
            sites.push(TemplateSite::new(site, last_update));
        }
        Ok(sites)
    }

    #[actix_web_codegen_const_routes::get(path = "PAGES.dash.home", wrap = "get_auth_middleware()")]
    #[tracing::instrument(name = "Dashboard homepage", skip(ctx, id))]
    pub async fn get_home(ctx: AppCtx, id: Identity) -> PageResult<impl Responder, Home> {
        let sites = get_site_data(&ctx, &id)
            .await
            .map_err(|e| PageError::new(Home::new(&ctx.settings, None), e))?;
        let home = Home::new(&ctx.settings, Some(&sites)).render();
        let html = ContentType::html();
        Ok(HttpResponse::Ok().content_type(html).body(home))
    }

    pub fn services(cfg: &mut web::ServiceConfig) {
        cfg.service(get_home);
    }

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

        use crate::ctx::ArcCtx;
        use crate::tests;
        use crate::*;

        use super::PAGES;

        #[actix_rt::test]
        async fn postgres_dash_home_works() {
            let (_, ctx) = tests::get_ctx().await;
            dashboard_home_works(ctx.clone()).await;
        }

        async fn dashboard_home_works(ctx: ArcCtx) {
            const NAME: &str = "testdashuser";
            const EMAIL: &str = "testdashuser@foo.com";
            const PASSWORD: &str = "longpassword";

            let _ = ctx.delete_user(NAME, PASSWORD).await;
            let (_, signin_resp) = ctx.register_and_signin(NAME, EMAIL, PASSWORD).await;
            let cookies = get_cookie!(signin_resp);
            let app = get_app!(ctx).await;

            let resp = get_request!(&app, PAGES.dash.home, cookies.clone());
            assert_eq!(resp.status(), StatusCode::OK);
            let res = String::from_utf8(test::read_body(resp).await.to_vec()).unwrap();
            println!("before adding site: {res}");
            assert!(res.contains("Nothing to show"));

            let page = ctx.add_test_site(NAME.into()).await;

            let resp = get_request!(&app, PAGES.dash.home, cookies.clone());
            assert_eq!(resp.status(), StatusCode::OK);
            let res = String::from_utf8(test::read_body(resp).await.to_vec()).unwrap();
            println!("after adding site: {res}");
            assert!(!res.contains("Nothing here"));
            assert!(res.contains(&page.domain));
            assert!(res.contains(&page.repo));

            let _ = ctx.delete_user(NAME, PASSWORD).await;
        }
    }