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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::borrow::Cow;

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

    use super::{AccountCheckPayload, AccountCheckResp};
    use crate::errors::*;
    use crate::AppData;

    #[my_codegen::post(path = "crate::V1_API_ROUTES.account.username_exists")]
    async fn username_exists(
        payload: web::Json<AccountCheckPayload>,
        data: AppData,
    ) -> ServiceResult<impl Responder> {
        let resp = runners::username_exists(&payload, &data).await?;
        Ok(HttpResponse::Ok().json(resp))
    }

    pub mod runners {
        use super::*;

        pub async fn username_exists(
            payload: &AccountCheckPayload,
            data: &AppData,
        ) -> ServiceResult<AccountCheckResp> {
            let res = sqlx::query!(
                "SELECT EXISTS (SELECT 1 from mcaptcha_users WHERE name = $1)",
                &payload.val,
            )
            .fetch_one(&data.db)
            .await?;

            let mut resp = AccountCheckResp { exists: false };

            if let Some(x) = res.exists {
                if x {
                    resp.exists = true;
                }
            }

            Ok(resp)
        }
    }

    #[derive(Clone, Debug, Deserialize, Serialize)]
    pub struct Username {
        pub username: String,
    }

    /// update username
    #[my_codegen::post(
        path = "crate::V1_API_ROUTES.account.update_username",
        wrap = "crate::api::v1::get_middleware()"
    )]
    async fn set_username(
        id: Identity,
        payload: web::Json<Username>,
        data: AppData,
    ) -> ServiceResult<impl Responder> {
        let username = id.identity().unwrap();

        let processed_uname = data.creds.username(&payload.username)?;

        let res = sqlx::query!(
            "UPDATE mcaptcha_users set name = $1
            WHERE name = $2",
            &processed_uname,
            &username,
        )
        .execute(&data.db)
        .await;

        if res.is_err() {
            if let Err(sqlx::Error::Database(err)) = res {
                if err.code() == Some(Cow::from("23505"))
                    && err.message().contains("mcaptcha_users_name_key")
                {
                    return Err(ServiceError::UsernameTaken);
                } else {
                    return Err(sqlx::Error::Database(err).into());
                }
            };
        }
        id.forget();
        id.remember(processed_uname);

        Ok(HttpResponse::Ok())
    }

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