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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/>.
     */

    //! Error-handling utilities
    use std::borrow::Cow;

    use db_core::dev::*;
    use sqlx::Error;

    /// map custom row not found error to DB error
    pub fn map_row_not_found_err(e: Error, row_not_found: DBError) -> DBError {
        if let Error::RowNotFound = e {
            row_not_found
        } else {
            map_register_err(e)
        }
    }

    /// map postgres errors to [DBError](DBError) types
    pub fn map_register_err(e: Error) -> DBError {
        if let Error::Database(err) = e {
            if err.code() == Some(Cow::from("23000")) {
                let msg = err.message();
                if msg.contains("for key 'name'") {
                    DBError::UsernameTaken
                } else if msg.contains("for key 'email'") {
                    DBError::EmailTaken
                } else if msg.contains("for key 'secret'") {
                    DBError::SecretTaken
                } else if msg.contains("for key 'captcha_key'") {
                    DBError::CaptchaKeyTaken
                } else {
                    DBError::DBError(Box::new(Error::Database(err)))
                }
            } else {
                DBError::DBError(Box::new(Error::Database(err)))
            }
        } else {
            DBError::DBError(Box::new(e))
        }
    }