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|
use warp::http::StatusCode;
use warp::{Filter, Rejection, reject::InvalidQuery};
use serde_json::{json, Value};
use serde::{Serialize, Deserialize};
use crate::database::{MicropubChannel, Storage};
#[derive(Serialize, Deserialize)]
#[serde(rename_all = "kebab-case")]
enum QueryType {
Source,
Config,
Channel,
SyndicateTo
}
#[derive(Serialize, Deserialize)]
struct MicropubQuery {
q: QueryType,
url: Option<String>
}
#[derive(Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
enum ErrorType {
InvalidRequest,
InternalServerError
}
#[derive(Serialize, Deserialize)]
struct MicropubError {
error: ErrorType,
error_description: String
}
impl From<MicropubError> for StatusCode {
fn from(err: MicropubError) -> Self {
match err.error {
ErrorType::InvalidRequest => StatusCode::BAD_REQUEST,
ErrorType::InternalServerError => StatusCode::INTERNAL_SERVER_ERROR
}
}
}
impl MicropubError {
fn new(error: ErrorType, error_description: &str) -> Self {
Self {
error,
error_description: error_description.to_owned()
}
}
}
pub fn query<D: Storage>(db: D) -> impl Filter<Extract = (impl warp::Reply,), Error = warp::Rejection> + Clone {
warp::get()
.map(move || db.clone())
.and(crate::util::require_host())
.and(warp::query::<MicropubQuery>())
.then(|db: D, host: warp::host::Authority, query: MicropubQuery| async move {
match query.q {
QueryType::Config => {
let channels: Vec<MicropubChannel> = match db.get_channels(host.as_str()).await {
Ok(chans) => chans,
Err(err) => return warp::reply::json(&MicropubError::new(
ErrorType::InternalServerError,
&format!("Error fetching channels: {}", err)
))
};
warp::reply::json(json!({
"q": [
QueryType::Source,
QueryType::Config,
QueryType::Channel,
QueryType::SyndicateTo
],
"channels": channels,
"_kittybox_authority": host.as_str()
}).as_object().unwrap())
},
_ => {
todo!()
}
}
})
.recover(|err: Rejection| async move {
let error = if let Some(_) = err.find::<InvalidQuery>() {
MicropubError::new(
ErrorType::InvalidRequest,
"Invalid query parameters sent. Try ?q=config to see what you can do."
)
} else {
log::error!("Unhandled rejection: {:?}", err);
MicropubError::new(
ErrorType::InternalServerError,
&format!("Unknown error: {:?}", err)
)
};
Ok(warp::reply::with_status(warp::reply::json(&error), error.into()))
})
}
|
