/*
 * 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_identity::Identity;
use actix_web::{http, web, HttpResponse, Responder};
use sailfish::TemplateOnce;
use sqlx::Error::RowNotFound;

use crate::api::v1::mcaptcha::easy::TrafficPattern;
use crate::errors::*;
use crate::AppData;

const PAGE: &str = "Edit Sitekey";

#[derive(Clone)]
struct McaptchaConfig {
    config_id: i32,
    duration: i32,
    name: String,
}

#[derive(Clone)]
struct Level {
    difficulty_factor: i32,
    visitor_threshold: i32,
}

#[derive(TemplateOnce, Clone)]
#[template(path = "panel/sitekey/edit/advance.html")]
struct AdvanceEditPage {
    duration: u32,
    name: String,
    key: String,
    levels: Vec<Level>,
}

impl AdvanceEditPage {
    fn new(config: McaptchaConfig, levels: Vec<Level>, key: String) -> Self {
        AdvanceEditPage {
            duration: config.duration as u32,
            name: config.name,
            levels,
            key,
        }
    }
}

/// route handler that renders individual views for sitekeys
#[my_codegen::get(
    path = "crate::PAGES.panel.sitekey.edit_advance",
    wrap = "crate::CheckLogin"
)]
pub async fn advance(
    path: web::Path<String>,
    data: AppData,
    id: Identity,
) -> PageResult<impl Responder> {
    let username = id.identity().unwrap();
    let key = path.into_inner();

    let config = sqlx::query_as!(
        McaptchaConfig,
        "SELECT config_id, duration, name from mcaptcha_config WHERE
        key = $1 AND
        user_id = (SELECT ID FROM mcaptcha_users WHERE name = $2) ",
        &key,
        &username,
    )
    .fetch_one(&data.db)
    .await?;

    let levels = sqlx::query_as!(
        Level,
        "SELECT 
            difficulty_factor, visitor_threshold 
        FROM 
            mcaptcha_levels 
        WHERE config_id = $1 ORDER BY difficulty_factor ASC",
        &config.config_id
    )
    .fetch_all(&data.db)
    .await?;

    let body = AdvanceEditPage::new(config, levels, key)
        .render_once()
        .unwrap();
    Ok(HttpResponse::Ok()
        .content_type("text/html; charset=utf-8")
        .body(body))
}

#[derive(TemplateOnce, Clone)]
#[template(path = "panel/sitekey/edit/easy/index.html")]
pub struct EasyEditPage<'a> {
    pub form_title: &'a str,
    pub pattern: TrafficPattern,
    pub key: String,
}

impl<'a> EasyEditPage<'a> {
    pub fn new(key: String, pattern: TrafficPattern) -> Self {
        Self {
            form_title: PAGE,
            pattern,
            key,
        }
    }
}

/// route handler that renders individual views for sitekeys
#[my_codegen::get(
    path = "crate::PAGES.panel.sitekey.edit_easy",
    wrap = "crate::CheckLogin"
)]
pub async fn easy(
    path: web::Path<String>,
    data: AppData,
    id: Identity,
) -> PageResult<impl Responder> {
    let username = id.identity().unwrap();
    let key = path.into_inner();

    struct Traffic {
        peak_sustainable_traffic: i32,
        avg_traffic: i32,
        broke_my_site_traffic: Option<i32>,
    }

    match sqlx::query_as!(
        Traffic,
        "SELECT 
          avg_traffic, 
          peak_sustainable_traffic, 
          broke_my_site_traffic 
        FROM 
          mcaptcha_sitekey_user_provided_avg_traffic 
        WHERE 
          config_id = (
            SELECT 
              config_id 
            FROM 
              mcaptcha_config 
            WHERE 
              KEY = $1 
              AND user_id = (
                SELECT 
                  id 
                FROM 
                  mcaptcha_users 
                WHERE 
                  NAME = $2
              )
          )
        ",
        &key,
        &username
    )
    .fetch_one(&data.db)
    .await
    {
        Ok(c) => {
            struct Description {
                name: String,
            }
            let description = sqlx::query_as!(
                Description,
                "SELECT name FROM mcaptcha_config 
                WHERE key = $1 
                AND user_id = (
                    SELECT user_id FROM mcaptcha_users WHERE NAME = $2)",
                &key,
                &username
            )
            .fetch_one(&data.db)
            .await?;

            let pattern = TrafficPattern {
                peak_sustainable_traffic: c.peak_sustainable_traffic as u32,
                avg_traffic: c.avg_traffic as u32,
                broke_my_site_traffic: c.broke_my_site_traffic.map(|n| n as u32),
                description: description.name,
            };

            let page = EasyEditPage::new(key, pattern).render_once().unwrap();
            return Ok(HttpResponse::Ok()
                .content_type("text/html; charset=utf-8")
                .body(page));
        }
        Err(RowNotFound) => {
            return Ok(HttpResponse::Found()
                .insert_header((
                    http::header::LOCATION,
                    crate::PAGES.panel.sitekey.get_edit_advance(&key),
                ))
                .finish());
        }
        Err(e) => Err(e.into()),
    }
}

#[cfg(test)]
mod test {
    use actix_web::http::{header, StatusCode};
    use actix_web::test;
    use actix_web::web::Bytes;

    use crate::tests::*;
    use crate::*;

    #[actix_rt::test]
    async fn edit_sitekey_work() {
        const NAME: &str = "editsitekeyuser";
        const PASSWORD: &str = "longpassworddomain";
        const EMAIL: &str = "editsitekeyuser@a.com";

        {
            let data = Data::new().await;
            delete_user(NAME, &data).await;
        }

        register_and_signin(NAME, EMAIL, PASSWORD).await;
        let (data, _, signin_resp, key) = add_levels_util(NAME, PASSWORD).await;
        let cookies = get_cookie!(signin_resp);

        let app = get_app!(data).await;

        let url = PAGES.panel.sitekey.get_edit_advance(&key.key);

        let list_sitekey_resp = test::call_service(
            &app,
            test::TestRequest::get()
                .uri(&url)
                .cookie(cookies.clone())
                .to_request(),
        )
        .await;

        assert_eq!(list_sitekey_resp.status(), StatusCode::OK);

        let body: Bytes = test::read_body(list_sitekey_resp).await;
        let body = String::from_utf8(body.to_vec()).unwrap();

        assert!(body.contains(&key.name));

        assert!(body.contains(&L1.visitor_threshold.to_string()));
        assert!(body.contains(&L1.difficulty_factor.to_string()));
        assert!(body.contains(&L2.difficulty_factor.to_string()));
        assert!(body.contains(&L2.visitor_threshold.to_string()));

        let easy_url = PAGES.panel.sitekey.get_edit_easy(&key.key);

        let redirect_resp = test::call_service(
            &app,
            test::TestRequest::get()
                .uri(&easy_url)
                .cookie(cookies.clone())
                .to_request(),
        )
        .await;
        assert_eq!(redirect_resp.status(), StatusCode::FOUND);
        let headers = redirect_resp.headers();
        assert_eq!(headers.get(header::LOCATION).unwrap(), &url);
    }
}