    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120

    /*
     * 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_web::{web, HttpResponse, Responder};
    use lazy_static::lazy_static;
    use sailfish::TemplateOnce;

    use crate::errors::PageError;

    #[derive(Clone, TemplateOnce)]
    #[template(path = "errors/index.html")]
    struct ErrorPage<'a> {
        title: &'a str,
        message: &'a str,
    }

    const PAGE: &str = "Error";

    impl<'a> ErrorPage<'a> {
        fn new(title: &'a str, message: &'a str) -> Self {
            ErrorPage { title, message }
        }
    }

    lazy_static! {
        static ref INTERNAL_SERVER_ERROR_BODY: String = ErrorPage::new(
            "Internal Server Error",
            &format!("{}", PageError::InternalServerError),
        )
        .render_once()
        .unwrap();
        static ref UNKNOWN_ERROR_BODY: String = ErrorPage::new(
            "Something went wrong",
            &format!("{}", PageError::InternalServerError),
        )
        .render_once()
        .unwrap();
    }

    const ERROR_ROUTE: &str = "/error/{id}";

    #[my_codegen::get(path = "ERROR_ROUTE")]
    async fn error(path: web::Path<usize>) -> impl Responder {
        let resp = match path.into_inner() {
            500 => HttpResponse::InternalServerError()
                .content_type("text/html; charset=utf-8")
                .body(&**INTERNAL_SERVER_ERROR_BODY),

            _ => HttpResponse::InternalServerError()
                .content_type("text/html; charset=utf-8")
                .body(&**UNKNOWN_ERROR_BODY),
        };

        resp
    }

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

    pub mod routes {
        pub struct Errors {
            pub internal_server_error: &'static str,
            pub unknown_error: &'static str,
        }

        impl Errors {
            pub const fn new() -> Self {
                Errors {
                    internal_server_error: "/error/500",
                    unknown_error: "/error/007",
                }
            }
        }
    }

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

        use super::*;
        use crate::PAGES;

        #[actix_rt::test]
        async fn error_pages_work() {
            let app = test::init_service(App::new().configure(services)).await;

            let resp = test::call_service(
                &app,
                test::TestRequest::get()
                    .uri(PAGES.errors.internal_server_error)
                    .to_request(),
            )
            .await;
            assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);

            let resp = test::call_service(
                &app,
                test::TestRequest::get()
                    .uri(PAGES.errors.unknown_error)
                    .to_request(),
            )
            .await;
            assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
        }
    }