use axum::{Extension, Json, extract::Path, response::IntoResponse};
use crate::cookie::CookieJar;
use tetratto_core::model::{oauth, 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, oauth::AppScope::CommunityCreateChannels) {
        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, oauth::AppScope::CommunityManageChannels) {
        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.first().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
            && 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;

    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, oauth::AppScope::CommunityManageChannels) {
        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, oauth::AppScope::CommunityManageChannels) {
        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, oauth::AppScope::CommunityManageChannels) {
        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 add_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, oauth::AppScope::CommunityManageChannels) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    match data.add_channel_member(id, user, req.member).await {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Member added".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, oauth::AppScope::CommunityManageChannels) {
        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()),
    }
}

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

    match data.get_channels_by_user(user.id).await {
        Ok(c) => Json(ApiReturn {
            ok: true,
            message: "Success".to_string(),
            payload: Some(c),
        }),
        Err(e) => Json(e.into()),
    }
}

pub async fn get_community_channels_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, oauth::AppScope::CommunityManageChannels) {
        Some(ua) => ua,
        None => return Json(Error::NotAllowed.into()),
    };

    if data
        .get_membership_by_owner_community_no_void(user.id, id)
        .await
        .is_err()
    {
        // must be a member of the community to request channels
        return Json(Error::NotAllowed.into());
    }

    match data.get_channels_by_community(id).await {
        Ok(c) => Json(ApiReturn {
            ok: true,
            message: "Success".to_string(),
            payload: Some(c),
        }),
        Err(e) => Json(e.into()),
    }
}

pub async fn get_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Path(id): Path<usize>,
) -> impl IntoResponse {
    let data = &(data.read().await).0;
    if get_user_from_token!(jar, data, oauth::AppScope::CommunityManageChannels).is_none() {
        return Json(Error::NotAllowed.into());
    }

    match data.get_channel_by_id(id).await {
        Ok(c) => Json(ApiReturn {
            ok: true,
            message: "Success".to_string(),
            payload: Some(c),
        }),
        Err(e) => Json(e.into()),
    }
}

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

    if user.channel_mutes.contains(&id) {
        return Json(Error::MiscError("Channel already muted".to_string()).into());
    }

    user.channel_mutes.push(id);
    match data
        .update_user_channel_mutes(user.id, user.channel_mutes)
        .await
    {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Channel muted".to_string(),
            payload: (),
        }),
        Err(e) => Json(e.into()),
    }
}

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

    let pos = match user.channel_mutes.iter().position(|x| *x == id) {
        Some(x) => x,
        None => return Json(Error::MiscError("Channel not muted".to_string()).into()),
    };

    user.channel_mutes.remove(pos);
    match data
        .update_user_channel_mutes(user.id, user.channel_mutes)
        .await
    {
        Ok(_) => Json(ApiReturn {
            ok: true,
            message: "Channel muted".to_string(),
            payload: (),
        }),
        Err(e) => Json(e.into()),
    }
}