use std::collections::HashMap;

use actix_web::{error, web, HttpRequest, Responder};
use actix_web_lab::respond::Html;

use log::info;
use minijinja::context;
use rusqlite::params;
use serde::Deserialize;
use uuid::Uuid;
use crate::db::external_id::{Id, SecurityId};

use crate::events::Event;

use crate::webui::services::ServicesFactory;
use crate::webui::templates::MiniJinjaRenderer;

#[actix_web::get("/actions")]
pub async fn actions(tmpl_env: MiniJinjaRenderer) -> actix_web::Result<impl Responder> {
    tmpl_env.render("actions.html", ())
}

#[actix_web::get("/accounts")]
pub async fn accounts(tmpl_env: MiniJinjaRenderer,
                      req: HttpRequest,
                      service_factory: web::Data<ServicesFactory>) -> actix_web::Result<impl Responder> {
    let conn = service_factory.get_connection()?;
    let auth_service = service_factory.get_authentication_service(&conn)?;
    let user = auth_service.get_login(&req);
    let account_service = service_factory.get_account_service(& conn)?;
    let accounts = account_service.get_user_accounts(&user.unwrap())
        .map_err(error::ErrorInternalServerError)?;
    tmpl_env.render("accounts.html", context!{accounts => accounts})
}

#[actix_web::get("/accounts/{account_id}")]
pub async fn account(tmpl_env: MiniJinjaRenderer,
                      req: HttpRequest,
                      service_factory: web::Data<ServicesFactory>) -> actix_web::Result<impl Responder> {

    tmpl_env.render("account.html", context!{})
}



#[actix_web::get("/securities")]
pub async fn securities(tmpl_env: MiniJinjaRenderer,
                        service_factory: web::Data<ServicesFactory>) -> actix_web::Result<impl Responder> {
    let conn = service_factory.get_connection()?;
    let account_service = service_factory.get_security_service(& conn)?;
    let ctx = context!{
        securities => account_service.list_securities()
    };
    tmpl_env.render("securities.html", ctx)
}

#[actix_web::get("/securities/{sec_id}")]
pub async fn security(tmpl_env: MiniJinjaRenderer,
                        service_factory: web::Data<ServicesFactory>) -> actix_web::Result<impl Responder> {

    let ctx = context!{};
    tmpl_env.render("security.html", ctx)
}

#[actix_web::get("/users")]
pub async fn users(
    tmpl_env: MiniJinjaRenderer,
    service_factory: web::Data<ServicesFactory>,
) -> actix_web::Result<impl Responder> {
    let conn = service_factory.get_connection()?;
    let user_service = service_factory.get_user_service(&conn)?;

    let users = user_service.list_users().unwrap();
    let ctx = context! {
        users => users,
    };
    tmpl_env.render("users.html", ctx)
}

#[actix_web::get("/partials/overview/submit_button")]
pub async fn overview_submit_button(
    tmpl_env: MiniJinjaRenderer,
    query: web::Query<HashMap<String, String>>,
) -> actix_web::Result<Html> {
    let ctx = context! {
        event_type => query.get("event_type").unwrap_or(&"".to_string()),
    };
    tmpl_env.render("partials/overview/submit_button.html", ctx)
}


#[actix_web::get("/partials/actions/accounts-by-security-selectors")]
pub async fn get_accounts_by_security_selectors(
    req: HttpRequest,
    tmpl_env: MiniJinjaRenderer,
    query: web::Query<HashMap<String, String>>,
    service_factory: web::Data<ServicesFactory>,
) -> actix_web::Result<Html> {
    let sec_id = query
        .get("sec-id")
        .and_then(SecurityId::from_string)
        .ok_or(error::ErrorBadRequest("Invalid sec-id parameters"))?;
    let conn = service_factory.get_connection()?;
    let account_service = service_factory.get_account_service(&conn)?;
    let authentication_service = service_factory.get_authentication_service(&conn)?;

    let maybe_user = authentication_service.get_login(&req);
    if maybe_user.is_none() {
        return Err(error::ErrorForbidden(""))
    }
    let user_id = maybe_user.unwrap();

    let ctx = context! {
        sec_id => &sec_id,
        user_id => &user_id,
        accounts => account_service.get_checking_accounts_for_security(&sec_id).map_err(error::ErrorInternalServerError)?,
    };
    tmpl_env.render("partials/actions/accounts-by-security-selectors.html", ctx)
}


#[actix_web::get("/partials/actions/action-form")]
pub async fn actions_partials(
    req: HttpRequest,
    tmpl_env: MiniJinjaRenderer,
    query: web::Query<HashMap<String, String>>,
    service_factory: web::Data<ServicesFactory>,
) -> actix_web::Result<Html> {
    let event_type = query
        .get("event_type")
        .unwrap_or(&"404".to_string())
        .to_string();
    let conn = service_factory.get_connection()?;
    let security_service = service_factory.get_security_service(&conn)?;
    let account_service = service_factory.get_account_service(&conn)?;
    let authentication_service = service_factory.get_authentication_service(&conn)?;
    let maybeUser = authentication_service.get_login(&req);
    if maybeUser.is_none() {
        return Err(actix_web::error::ErrorForbidden(""))
    }
    let user = maybeUser.unwrap();
    let ctx = context! {
        event_type => event_type,
        securities => security_service.list_securities(),
        emitter_accounts => account_service.get_user_emitter_accounts(&user).map_err(error::ErrorInternalServerError)?,
        accounts => account_service.get_user_emitter_accounts(&user).map_err(error::ErrorInternalServerError)?,
        user => authentication_service.get_logged_in_user(&req).map_err(error::ErrorInternalServerError)?,
    };
    let template_location = format!("partials/actions/{:}.html", event_type);
    info!("Getting template at: {:?}", template_location);
    tmpl_env.render(template_location.as_str(), ctx)
}

#[derive(Deserialize, Debug)]
pub struct CreateEventPayload {
    event: Event,
    event_type: String,
    initiator: String,
}

#[actix_web::post("/events/{event_type}")]
pub async fn push_event(
    req: HttpRequest,
    tmpl_env: MiniJinjaRenderer,
    event_channel: web::Data<async_channel::Sender<(Uuid, Event)>>,
    web::Json(form): web::Json<CreateEventPayload>,
) -> actix_web::Result<Html> {
    let path_event_type = req.match_info().get("event_type").unwrap();
    if path_event_type.to_string() != form.event_type {
        return Err(error::ErrorBadRequest("Inconsistent event type."));
    }
    let validation = form.event.validate_event();
    if validation.is_err() {
        return Err(error::ErrorBadRequest(validation.err().unwrap()));
    }
    let _ = event_channel.send((Uuid::new_v4(), form.event)).await;
    let ctx = context! {
        event_type => "event received.",
    };
    tmpl_env.render("partials/v1/event_processed.html", ctx)
}