use crate::models::user::User;
use mysql::prelude::Queryable;
use mysql::{params, Error as MysqlError};
use r2d2::{Error as R2D2Error, Pool};
use r2d2_mysql::MySqlConnectionManager;
use thiserror::Error;

#[derive(Error, Debug)]
pub enum UserRepositoryError {
    #[error("mysql error: {0}")]
    MySqlError(#[from] MysqlError),

    #[error("Connection pool error: {0}")]
    PoolError(#[from] R2D2Error),
}

pub struct UserRepository {
    pool: Pool<MySqlConnectionManager>,
}

impl UserRepository {
    pub fn new(pool: Pool<MySqlConnectionManager>) -> Self {
        UserRepository { pool }
    }

    /**
     * 新建用户
     */
    pub fn create_user(&self, user: &User) -> Result<(), UserRepositoryError> {
        let mut conn = self.pool.get().unwrap();
        let sql = r"INSERT INTO users (id, name, age, email, password) VALUES (:id, :name, :age, :email, :password)";
        conn.exec_drop(
            sql,
            params! {
                "id" => &user.id,
                "name" => &user.name,
                "age" => &user.age,
                "email" => &user.email,
                "password" => &user.password,
            },
        )?;
        Ok(())
    }

    // /**
    //  * 删除用户
    //  */
    // pub fn delete_user(&mut self, user: &User) -> Result<(), mysql::Error> {
    //     let mut conn = self.pool.get().unwrap();
    //     conn.exec_drop(
    //         r"DELETE FROM users WHERE id = :id",
    //         params! {
    //             "id" => &user.id,
    //         },
    //     )
    // }

    // /**
    //  * 更新用户
    //  */
    // pub fn update_user(&mut self, user: &User) -> Result<(), mysql::Error> {
    //     let mut conn = self.pool.get().unwrap();
    //     conn.exec_drop(
    //         r"UPDATE users SET name = :name, age = :age, email = :email, password = :password WHERE id = :id",
    //         params! {
    //             "id" => &user.id,
    //             "name" => &user.name,
    //             "age" => &user.age,
    //             "email" => &user.email,
    //             "password" => &user.password,
    //         },
    //     )
    // }

    // /**
    //  * 查询所有用户
    //  */
    // pub fn query_all_user(&mut self) -> Result<Vec<User>, mysql::Error> {
    //     let mut conn = self.pool.get().unwrap();
    //     conn.query_map(
    //         "SELECT id, name, age, email, password FROM users",
    //         |(id, name, age, email, password)| User {
    //             id,
    //             name,
    //             age,
    //             email,
    //             password,
    //         },
    //     )
    // }

    // /**
    //  * 根据ID查询用户
    //  */
    // pub fn query_user_by_id(&mut self, id: i32) -> Result<Option<User>, mysql::Error> {
    //     let mut conn = self.pool.get().unwrap();
    //     let result: Option<User> = conn.exec_first(
    //         "SELECT id, name, age, email, password FROM users WHERE id = :id",
    //         params! {
    //             "id" => id,
    //         },
    //     )?;
    //     Ok(result)
    // }

    // /**
    //  * 根据用户名查询用户
    //  */
    // pub fn query_user_by_name(&mut self, name: &str) -> Result<Option<User>, mysql::Error> {
    //     let mut conn = self.pool.get().unwrap();
    //     conn.exec_first(
    //         "SELECT id, name, age, email, password FROM users WHERE name = :name",
    //         params! {
    //             "name" => name,
    //         },
    //     )
    // }

    // /**
    //  * 根据邮箱查询用户
    //  */
    // pub fn query_user_by_email(&mut self, email: &str) -> Result<Option<User>, mysql::Error> {
    //     let mut conn = self.pool.get().unwrap();
    //     conn.exec_first(
    //         "SELECT id, name, age, email, password FROM users WHERE email = :email",
    //         params! {
    //             "email" => email,
    //         },
    //     )
    // }
}