# email.rs - source
Source of the Rust file `src/api/v1/account/email.rs`.
Keywords: rust, rustlang, rust-lang

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    /*
    * Copyright (C) 2021  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;

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

    #[my_codegen::post(path = "crate::V1_API_ROUTES.account.email_exists")]
    pub async fn email_exists(
        payload: web::Json<AccountCheckPayload>,
        data: AppData,
    ) -> ServiceResult<impl Responder> {
        let res = sqlx::query!(
            "SELECT EXISTS (SELECT 1 from mcaptcha_users WHERE email = $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(HttpResponse::Ok().json(resp))
    }

    /// update email
    #[my_codegen::post(
        path = "crate::V1_API_ROUTES.account.update_email",
        wrap = "crate::CheckLogin"
    )]
    async fn set_email(
        id: Identity,
        payload: web::Json<Email>,
        data: AppData,
    ) -> ServiceResult<impl Responder> {
        let username = id.identity().unwrap();

        data.creds.email(&payload.email)?;

        let res = sqlx::query!(
            "UPDATE mcaptcha_users set email = $1
            WHERE name = $2",
            &payload.email,
            &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_email_key")
                {
                    return Err(ServiceError::EmailTaken);
                } else {
                    return Err(sqlx::Error::Database(err).into());
                }
            };
        }
        Ok(HttpResponse::Ok())
    }

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