use axum::{Extension, Json, extract::Path, response::IntoResponse};
use axum_extra::extract::CookieJar;
use tetratto_core::model::{channels::Channel, ApiReturn, Error};
use crate::{
    get_user_from_token,
    routes::api::v1::{
        CreateChannel, CreateGroupChannel, KickMember, UpdateChannelPosition, UpdateChannelTitle,
    },
    State,
};

pub async fn create_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Json(req): Json<CreateChannel>,
) -> impl IntoResponse {
    let data = &(data.read().await).0;
    let user = match get_user_from_token!(jar, data) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    match data
        .create_channel(Channel::new(
            match req.community.parse::<usize>() {
                Ok(c) => c,
                Err(e) => return Json(Error::MiscError(e.to_string()).into()),
            },
            user.id,
            0,
            req.title,
        ))
        .await
    {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Channel created".to_string(),
            payload: (),
        }),
        Err(e) => Json(e.into()),
    }
}

pub async fn create_group_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Json(req): Json<CreateGroupChannel>,
) -> impl IntoResponse {
    let data = &(data.read().await).0;
    let user = match get_user_from_token!(jar, data) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    let mut members: Vec<usize> = Vec::new();

    for member in req.members {
        members.push(match member.parse::<usize>() {
            Ok(c) => c,
            Err(e) => return Json(Error::MiscError(e.to_string()).into()),
        })
    }

    // check for existing
    if members.len() == 1 {
        let other_user = members.get(0).unwrap().to_owned();
        if let Ok(channel) = data.get_channel_by_owner_member(user.id, other_user).await {
            return Json(ApiReturn {
                ok: true,
                message: "Channel exists".to_string(),
                payload: Some(channel.id.to_string()),
            });
        }
    }

    // check member permissions
    for member in &members {
        let other_user = match data.get_user_by_id(member.to_owned()).await {
            Ok(ua) => ua,
            Err(e) => return Json(e.into()),
        };

        if other_user.settings.private_chats {
            if data
                .get_userfollow_by_initiator_receiver(other_user.id, user.id)
                .await
                .is_err()
            {
                return Json(Error::NotAllowed.into());
            }
        }
    }

    // ...
    let mut props = Channel::new(0, user.id, 0, req.title);
    props.members = members;
    let id = props.id.clone();

    match data.create_channel(props).await {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Channel created".to_string(),
            payload: Some(id.to_string()),
        }),
        Err(e) => Json(e.into()),
    }
}

pub async fn delete_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Path(id): Path<usize>,
) -> impl IntoResponse {
    let data = &(data.read().await).0;
    let user = match get_user_from_token!(jar, data) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    match data.delete_channel(id, &user).await {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Channel deleted".to_string(),
            payload: (),
        }),
        Err(e) => Json(e.into()),
    }
}

pub async fn update_title_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Path(id): Path<usize>,
    Json(req): Json<UpdateChannelTitle>,
) -> impl IntoResponse {
    let data = &(data.read().await).0;
    let user = match get_user_from_token!(jar, data) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    match data.update_channel_title(id, user, &req.title).await {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Channel updated".to_string(),
            payload: (),
        }),
        Err(e) => Json(e.into()),
    }
}

pub async fn update_position_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Path(id): Path<usize>,
    Json(req): Json<UpdateChannelPosition>,
) -> impl IntoResponse {
    let data = &(data.read().await).0;
    let user = match get_user_from_token!(jar, data) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    match data.update_channel_position(id, user, req.position).await {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Channel updated".to_string(),
            payload: (),
        }),
        Err(e) => Json(e.into()),
    }
}

pub async fn kick_member_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Path(id): Path<usize>,
    Json(req): Json<KickMember>,
) -> impl IntoResponse {
    let data = &(data.read().await).0;
    let user = match get_user_from_token!(jar, data) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    match data
        .remove_channel_member(
            id,
            user,
            match req.member.parse::<usize>() {
                Ok(c) => c,
                Err(e) => return Json(Error::MiscError(e.to_string()).into()),
            },
        )
        .await
    {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Member removed".to_string(),
            payload: (),
        }),
        Err(e) => Json(e.into()),
    }
}