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add enum containing all successful route returns (#614)

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* add enum containing all successful route returns

This enum derives `Responder`, so it can be used as route result.
We also implement `From`, so it can be converted

* disable clippy warning about this enum

There's no use trying to chase this warning.
The next warning will be about `Redirect`, which itself is 360 byte,
according to @fdb-hiroshima (thanks for the research!)

So, if anything, we can try to get Rocket to work on that!

* refactor routes/posts to only use one level of Result

* admin settings error is not an ErrorPage, so dont use Result<>

* refactor: use early return to remove indent of main logic

This diff is absolutely atrocious.
but the resulting readability is worth it

* refactor routes/post for early returns & RespondOrRedirect

* refactor routes/session for early returns & use RespondOrRedirect

* refactor routes/user -- add another field to enum

* refactor routes/blogs for early returns & RespondOrRedirect

* refactor routes/blogs for early returns & RespondOrRedirect

This is a final refactor of `pub fn update()` for readability.
We're removing at least one indentation level.
This commit is contained in:
Igor Galić 2019-06-14 09:33:30 +02:00 committed by GitHub
parent 4b205fa995
commit 3d27e283ad
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
7 changed files with 337 additions and 292 deletions
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59
src/routes/blogs.rs
View file

@ -16,7 +16,7 @@ use plume_models::{
blog_authors::*, blogs::*, instance::Instance, medias::*, posts::Post, safe_string::SafeString,
users::User, Connection, PlumeRocket,
};
use routes::{errors::ErrorPage, Page};
use routes::{errors::ErrorPage, Page, RespondOrRedirect};
use template_utils::{IntoContext, Ructe};
#[get("/~/<name>?<page>", rank = 2)]
@ -84,10 +84,7 @@ fn valid_slug(title: &str) -> Result<(), ValidationError> {
}
#[post("/blogs/new", data = "<form>")]
pub fn create(
form: LenientForm<NewBlogForm>,
rockets: PlumeRocket,
) -> Result<Flash<Redirect>, Ructe> {
pub fn create(form: LenientForm<NewBlogForm>, rockets: PlumeRocket) -> RespondOrRedirect {
let slug = utils::make_actor_id(&form.title);
let conn = &*rockets.conn;
let intl = &rockets.intl.catalog;
@ -111,7 +108,10 @@ pub fn create(
);
}
if errors.is_empty() {
if !errors.is_empty() {
return render!(blogs::new(&rockets.to_context(), &*form, errors)).into();
}
let blog = Blog::insert(
&*conn,
NewBlog::new_local(
@ -136,17 +136,15 @@ pub fn create(
)
.expect("blog::create: author error");
Ok(Flash::success(
Flash::success(
Redirect::to(uri!(details: name = slug.clone(), page = _)),
&i18n!(intl, "Your blog was successfully created!"),
))
} else {
Err(render!(blogs::new(&rockets.to_context(), &*form, errors)))
}
)
.into()
}
#[post("/~/<name>/delete")]
pub fn delete(name: String, rockets: PlumeRocket) -> Result<Flash<Redirect>, Ructe> {
pub fn delete(name: String, rockets: PlumeRocket) -> RespondOrRedirect {
let conn = &*rockets.conn;
let blog = Blog::find_by_fqn(&rockets, &name).expect("blog::delete: blog not found");
@ -158,19 +156,21 @@ pub fn delete(name: String, rockets: PlumeRocket) -> Result<Flash<Redirect>, Ruc
{
blog.delete(&conn, &rockets.searcher)
.expect("blog::expect: deletion error");
Ok(Flash::success(
Flash::success(
Redirect::to(uri!(super::instance::index)),
i18n!(rockets.intl.catalog, "Your blog was deleted."),
))
)
.into()
} else {
// TODO actually return 403 error code
Err(render!(errors::not_authorized(
render!(errors::not_authorized(
&rockets.to_context(),
i18n!(
rockets.intl.catalog,
"You are not allowed to delete this blog."
)
)))
))
.into()
}
}
@ -236,16 +236,27 @@ pub fn update(
name: String,
form: LenientForm<EditForm>,
rockets: PlumeRocket,
) -> Result<Flash<Redirect>, Ructe> {
) -> RespondOrRedirect {
let conn = &*rockets.conn;
let intl = &rockets.intl.catalog;
let mut blog = Blog::find_by_fqn(&rockets, &name).expect("blog::update: blog not found");
if rockets
if !rockets
.user
.clone()
.and_then(|u| u.is_author_in(&*conn, &blog).ok())
.unwrap_or(false)
{
// TODO actually return 403 error code
return render!(errors::not_authorized(
&rockets.to_context(),
i18n!(
rockets.intl.catalog,
"You are not allowed to edit this blog."
)
))
.into();
}
let user = rockets
.user
.clone()
@ -324,16 +335,8 @@ pub fn update(
err
))
})
} else {
// TODO actually return 403 error code
Err(render!(errors::not_authorized(
&rockets.to_context(),
i18n!(
rockets.intl.catalog,
"You are not allowed to edit this blog."
)
)))
}
.unwrap()
.into()
}
#[get("/~/<name>/outbox")]

34
src/routes/instance.rs
View file

@ -13,7 +13,7 @@ use plume_models::{
admin::Admin, comments::Comment, db_conn::DbConn, headers::Headers, instance::*, posts::Post,
safe_string::SafeString, users::User, Error, PlumeRocket, CONFIG,
};
use routes::{errors::ErrorPage, rocket_uri_macro_static_files, Page};
use routes::{errors::ErrorPage, rocket_uri_macro_static_files, Page, RespondOrRedirect};
use template_utils::{IntoContext, Ructe};
#[get("/")]
@ -114,10 +114,19 @@ pub fn update_settings(
_admin: Admin,
form: LenientForm<InstanceSettingsForm>,
rockets: PlumeRocket,
) -> Result<Flash<Redirect>, Ructe> {
) -> RespondOrRedirect {
let conn = &*rockets.conn;
form.validate()
.and_then(|_| {
if let Err(e) = form.validate() {
let local_inst =
Instance::get_local().expect("instance::update_settings: local instance error");
render!(instance::admin(
&rockets.to_context(),
local_inst,
form.clone(),
e
))
.into()
} else {
let instance =
Instance::get_local().expect("instance::update_settings: local instance error");
instance
@ -129,21 +138,12 @@ pub fn update_settings(
form.long_description.clone(),
)
.expect("instance::update_settings: save error");
Ok(Flash::success(
Flash::success(
Redirect::to(uri!(admin)),
i18n!(rockets.intl.catalog, "Instance settings have been saved."),
))
})
.or_else(|e| {
let local_inst =
Instance::get_local().expect("instance::update_settings: local instance error");
Err(render!(instance::admin(
&rockets.to_context(),
local_inst,
form.clone(),
e
)))
})
)
.into()
}
}
#[get("/admin/instances?<page>")]

11
src/routes/medias.rs
View file

@ -38,14 +38,16 @@ pub fn upload(
ct: &ContentType,
conn: DbConn,
) -> Result<Redirect, status::BadRequest<&'static str>> {
if ct.is_form_data() {
if !ct.is_form_data() {
return Ok(Redirect::to(uri!(new)));
}
let (_, boundary) = ct
.params()
.find(|&(k, _)| k == "boundary")
.ok_or_else(|| status::BadRequest(Some("No boundary")))?;
match Multipart::with_body(data.open(), boundary).save().temp() {
SaveResult::Full(entries) => {
if let SaveResult::Full(entries) = Multipart::with_body(data.open(), boundary).save().temp() {
let fields = entries.fields;
let filename = fields
@ -105,9 +107,6 @@ pub fn upload(
)
.map_err(|_| status::BadRequest(Some("Error while saving media")))?;
Ok(Redirect::to(uri!(details: id = media.id)))
}
SaveResult::Partial(_, _) | SaveResult::Error(_) => Ok(Redirect::to(uri!(new))),
}
} else {
Ok(Redirect::to(uri!(new)))
}

38
src/routes/mod.rs
View file

@ -7,15 +7,51 @@ use rocket::{
RawStr, Status,
},
request::{self, FromFormValue, FromRequest, Request},
response::NamedFile,
response::{Flash, NamedFile, Redirect},
Outcome,
};
use std::path::{Path, PathBuf};
use template_utils::Ructe;
use plume_models::{posts::Post, Connection};
const ITEMS_PER_PAGE: i32 = 12;
/// Special return type used for routes that "cannot fail", and instead
/// `Redirect`, or `Flash<Redirect>`, when we cannot deliver a `Ructe` Response
#[allow(clippy::large_enum_variant)]
#[derive(Responder)]
pub enum RespondOrRedirect {
Response(Ructe),
FlashResponse(Flash<Ructe>),
Redirect(Redirect),
FlashRedirect(Flash<Redirect>),
}
impl From<Ructe> for RespondOrRedirect {
fn from(response: Ructe) -> Self {
RespondOrRedirect::Response(response)
}
}
impl From<Flash<Ructe>> for RespondOrRedirect {
fn from(response: Flash<Ructe>) -> Self {
RespondOrRedirect::FlashResponse(response)
}
}
impl From<Redirect> for RespondOrRedirect {
fn from(redirect: Redirect) -> Self {
RespondOrRedirect::Redirect(redirect)
}
}
impl From<Flash<Redirect>> for RespondOrRedirect {
fn from(redirect: Flash<Redirect>) -> Self {
RespondOrRedirect::FlashRedirect(redirect)
}
}
#[derive(Shrinkwrap, Copy, Clone, UriDisplayQuery)]
pub struct Page(i32);

59
src/routes/posts.rs
View file

@ -26,7 +26,9 @@ use plume_models::{
users::User,
Error, PlumeRocket,
};
use routes::{comments::NewCommentForm, errors::ErrorPage, ContentLen, RemoteForm};
use routes::{
comments::NewCommentForm, errors::ErrorPage, ContentLen, RemoteForm, RespondOrRedirect,
};
use template_utils::{IntoContext, Ructe};
#[get("/~/<blog>/<slug>?<responding_to>", rank = 4)]
@ -40,12 +42,18 @@ pub fn details(
let user = rockets.user.clone();
let blog = Blog::find_by_fqn(&rockets, &blog)?;
let post = Post::find_by_slug(&*conn, &slug, blog.id)?;
if post.published
if !(post.published
|| post
.get_authors(&*conn)?
.into_iter()
.any(|a| a.id == user.clone().map(|u| u.id).unwrap_or(0))
.any(|a| a.id == user.clone().map(|u| u.id).unwrap_or(0)))
{
return Ok(render!(errors::not_authorized(
&rockets.to_context(),
i18n!(rockets.intl.catalog, "This post isn't published yet.")
)));
}
let comments = CommentTree::from_post(&*conn, &post, user.as_ref())?;
let previous = responding_to.and_then(|r| Comment::get(&*conn, r).ok());
@ -87,12 +95,6 @@ pub fn details(
user.and_then(|u| u.is_following(&*conn, post.get_authors(&*conn).ok()?[0].id).ok()).unwrap_or(false),
post.get_authors(&*conn)?[0].clone()
)))
} else {
Ok(render!(errors::not_authorized(
&rockets.to_context(),
i18n!(rockets.intl.catalog, "This post isn't published yet.")
)))
}
}
#[get("/~/<blog>/<slug>", rank = 3)]
@ -219,7 +221,7 @@ pub fn update(
cl: ContentLen,
form: LenientForm<NewPostForm>,
rockets: PlumeRocket,
) -> Result<Flash<Redirect>, Ructe> {
) -> RespondOrRedirect {
let conn = &*rockets.conn;
let b = Blog::find_by_fqn(&rockets, &blog).expect("post::update: blog error");
let mut post =
@ -255,10 +257,11 @@ pub fn update(
.expect("posts::update: is author in error")
{
// actually it's not "Ok"…
Ok(Flash::error(
Flash::error(
Redirect::to(uri!(super::blogs::details: name = blog, page = _)),
i18n!(&intl, "You are not allowed to publish on this blog."),
))
)
.into()
} else {
let (content, mentions, hashtags) = utils::md_to_html(
form.content.to_string().as_ref(),
@ -345,14 +348,15 @@ pub fn update(
}
}
Ok(Flash::success(
Flash::success(
Redirect::to(uri!(details: blog = blog, slug = new_slug, responding_to = _)),
i18n!(intl, "Your article has been updated."),
))
)
.into()
}
} else {
let medias = Media::for_user(&*conn, user.id).expect("posts:update: medias error");
Err(render!(posts::new(
render!(posts::new(
&rockets.to_context(),
i18n!(intl, "Edit {0}"; &form.title),
b,
@ -363,7 +367,8 @@ pub fn update(
errors.clone(),
medias.clone(),
cl.0
)))
))
.into()
}
}
@ -396,7 +401,7 @@ pub fn create(
form: LenientForm<NewPostForm>,
cl: ContentLen,
rockets: PlumeRocket,
) -> Result<Flash<Redirect>, Result<Ructe, ErrorPage>> {
) -> Result<RespondOrRedirect, ErrorPage> {
let conn = &*rockets.conn;
let blog = Blog::find_by_fqn(&rockets, &blog_name).expect("post::create: blog error");;
let slug = form.title.to_string().to_kebab_case();
@ -429,7 +434,8 @@ pub fn create(
&rockets.intl.catalog,
"You are not allowed to publish on this blog."
),
));
)
.into());
}
let (content, mentions, hashtags) = utils::md_to_html(
@ -530,10 +536,11 @@ pub fn create(
Ok(Flash::success(
Redirect::to(uri!(details: blog = blog_name, slug = slug, responding_to = _)),
i18n!(&rockets.intl.catalog, "Your article has been saved."),
))
)
.into())
} else {
let medias = Media::for_user(&*conn, user.id).expect("posts::create: medias error");
Err(Ok(render!(posts::new(
Ok(render!(posts::new(
&rockets.to_context(),
i18n!(rockets.intl.catalog, "New article"),
blog,
@ -544,7 +551,8 @@ pub fn create(
errors.clone(),
medias,
cl.0
))))
))
.into())
}
}
@ -627,14 +635,14 @@ pub fn remote_interact_post(
blog_name: String,
slug: String,
remote: LenientForm<RemoteForm>,
) -> Result<Result<Ructe, Redirect>, ErrorPage> {
) -> Result<RespondOrRedirect, ErrorPage> {
let target = Blog::find_by_fqn(&rockets, &blog_name)
.and_then(|blog| Post::find_by_slug(&rockets.conn, &slug, blog.id))?;
if let Some(uri) = User::fetch_remote_interact_uri(&remote.remote)
.ok()
.and_then(|uri| rt_format!(uri, uri = target.ap_url).ok())
{
Ok(Err(Redirect::to(uri)))
Ok(Redirect::to(uri).into())
} else {
let mut errs = ValidationErrors::new();
errs.add("remote", ValidationError {
@ -643,13 +651,14 @@ pub fn remote_interact_post(
params: HashMap::new(),
});
//could not get your remote url?
Ok(Ok(render!(posts::remote_interact(
Ok(render!(posts::remote_interact(
&rockets.to_context(),
target,
super::session::LoginForm::default(),
ValidationErrors::default(),
remote.clone(),
errs
))))
))
.into())
}
}

32
src/routes/session.rs
View file

@ -7,6 +7,7 @@ use rocket::{
State,
};
use rocket_i18n::I18n;
use routes::RespondOrRedirect;
use std::{
borrow::Cow,
sync::{Arc, Mutex},
@ -45,7 +46,7 @@ pub fn create(
form: LenientForm<LoginForm>,
mut cookies: Cookies,
rockets: PlumeRocket,
) -> Result<Flash<Redirect>, Ructe> {
) -> RespondOrRedirect {
let conn = &*rockets.conn;
let user = User::find_by_email(&*conn, &form.email_or_name)
.or_else(|_| User::find_by_fqn(&rockets, &form.email_or_name));
@ -76,7 +77,10 @@ pub fn create(
String::new()
};
if errors.is_empty() {
if !errors.is_empty() {
return render!(session::login(&rockets.to_context(), None, &*form, errors)).into();
}
cookies.add_private(
Cookie::build(AUTH_COOKIE, user_id)
.same_site(SameSite::Lax)
@ -96,28 +100,20 @@ pub fn create(
)
.unwrap_or_else(|| "/".to_owned());
let uri = Uri::parse(&destination)
.map(IntoOwned::into_owned)
.map_err(|_| {
if let Ok(uri) = Uri::parse(&destination).map(IntoOwned::into_owned) {
Flash::success(
Redirect::to(uri),
i18n!(&rockets.intl.catalog, "You are now connected."),
)
.into()
} else {
render!(session::login(
&(conn, &rockets.intl.catalog, None, None),
None,
&*form,
errors
))
})?;
Ok(Flash::success(
Redirect::to(uri),
i18n!(&rockets.intl.catalog, "You are now connected."),
))
} else {
Err(render!(session::login(
&rockets.to_context(),
None,
&*form,
errors
)))
.into()
}
}

22
src/routes/user.rs
View file

@ -25,14 +25,14 @@ use plume_models::{
users::*,
Error, PlumeRocket,
};
use routes::{errors::ErrorPage, Page, RemoteForm};
use routes::{errors::ErrorPage, Page, RemoteForm, RespondOrRedirect};
use template_utils::{IntoContext, Ructe};
#[get("/me")]
pub fn me(user: Option<User>) -> Result<Redirect, Flash<Redirect>> {
pub fn me(user: Option<User>) -> RespondOrRedirect {
match user {
Some(user) => Ok(Redirect::to(uri!(details: name = user.username))),
None => Err(utils::requires_login("", uri!(me))),
Some(user) => Redirect::to(uri!(details: name = user.username)).into(),
None => utils::requires_login("", uri!(me)).into(),
}
}
@ -190,7 +190,7 @@ pub fn follow_not_connected(
name: String,
remote_form: Option<LenientForm<RemoteForm>>,
i18n: I18n,
) -> Result<Result<Flash<Ructe>, Redirect>, ErrorPage> {
) -> Result<RespondOrRedirect, ErrorPage> {
let target = User::find_by_fqn(&rockets, &name)?;
if let Some(remote_form) = remote_form {
if let Some(uri) = User::fetch_remote_interact_uri(&remote_form)
@ -207,7 +207,7 @@ pub fn follow_not_connected(
.ok()
})
{
Ok(Err(Redirect::to(uri)))
Ok(Redirect::to(uri).into())
} else {
let mut err = ValidationErrors::default();
err.add("remote",
@ -217,7 +217,7 @@ pub fn follow_not_connected(
params: HashMap::new(),
},
);
Ok(Ok(Flash::new(
Ok(Flash::new(
render!(users::follow_remote(
&rockets.to_context(),
target,
@ -228,10 +228,11 @@ pub fn follow_not_connected(
)),
"callback",
uri!(follow: name = name).to_string(),
)))
)
.into())
}
} else {
Ok(Ok(Flash::new(
Ok(Flash::new(
render!(users::follow_remote(
&rockets.to_context(),
target,
@ -243,7 +244,8 @@ pub fn follow_not_connected(
)),
"callback",
uri!(follow: name = name).to_string(),
)))
)
.into())
}
}