use crate::{db::permissions::PermissionRaw, prelude::*};

#[derive(Deserialize, Debug)]
pub struct Params {
    folder_id: Uuid,
    permission_type: PermissionRaw,
    user_id: i32,
}

pub async fn set(
    claims: Claims,
    State(pool): State<Pool>,
    Json(params): Json<Params>,
) -> GeneralResult<EmptyResponse> {
    let root = db::folder::get_root(claims.user_id, &pool)
        .await
        .handle_internal("Error getting the root folder")?;
    if params.folder_id == root {
        return Err(GeneralError::message(
            StatusCode::BAD_REQUEST,
            "Cannot set permissions for the root folder",
        ));
    }

    db::folder::get_permissions(params.folder_id, claims.user_id, &pool)
        .await
        .can_manage_guard()?;

    if params.user_id == claims.user_id {
        return Err(GeneralError::message(
            StatusCode::BAD_REQUEST,
            "Cannot set your own permissions",
        ));
    }

    let folder_info = db::folder::get_by_id(params.folder_id, &pool)
        .await
        .handle_internal("Error getting folder info")?
        .item_not_found()?;
    if folder_info.owner_id == params.user_id {
        return Err(GeneralError::message(
            StatusCode::BAD_REQUEST,
            "Cannot set permissions of the folder's owner",
        ));
    }

    db::permissions::insert(
        params.user_id,
        params.folder_id,
        params.permission_type,
        &pool,
    )
    .await
    .handle_internal("Error writing to the database")?;

    Ok(EmptyResponse)
}