use serde::{Serialize, Deserialize};
use tide::{Request, Response, Result, StatusCode, Next};
use log::{info,error};
use crate::ApplicationState;
use crate::database::Storage;
static POSTS_PER_PAGE: usize = 20;
mod templates {
use log::error;
use http_types::StatusCode;
use ellipse::Ellipse;
use chrono;
use super::IndiewebEndpoints;
/// Return a pretty location specifier from a geo: URI.
fn decode_geo_uri(uri: &str) -> String {
if let Some(part) = uri.split(":").collect::<Vec<_>>().get(1) {
if let Some(part) = part.split(";").next() {
let mut parts = part.split(",");
let lat = parts.next().unwrap();
let lon = parts.next().unwrap();
// TODO - format them as proper latitude and longitude
return format!("{}, {}", lat, lon)
} else {
return uri.to_string()
}
} else {
return uri.to_string()
}
}
markup::define! {
Template<'a>(title: &'a str, endpoints: IndiewebEndpoints, content: String) {
@markup::doctype()
html {
head {
title { @title }
link[rel="preconnect", href="https://fonts.gstatic.com"];
link[rel="stylesheet", href="/static/style.css"];
meta[name="viewport", content="initial-scale=1, width=device-width"];
// TODO: link rel= for common IndieWeb APIs: webmention, microsub
link[rel="micropub", href="/micropub"]; // Static, because it's built into the server itself
link[rel="authorization_endpoint", href=&endpoints.authorization_endpoint];
link[rel="token_endpoint", href=&endpoints.token_endpoint];
}
body {
nav#headerbar {
// TODO: Find a way to store the website name somewhere in the database
// Maybe in the settings?
ul {
li { a#homepage[href="/"] { "Vika's Hideout" } }
li.shiftright { a#login[href="/login"] { "Login" } }
}
}
main {
@markup::raw(content)
}
}
}
}
Entry<'a>(post: &'a serde_json::Value) {
article."h-entry" {
header.metadata {
@if post["properties"]["name"][0].is_string() {
h1."p-name" {
@post["properties"]["name"][0].as_str().unwrap()
}
}
div {
span {
a."u-url"."u-uid"[href=post["properties"]["uid"][0].as_str().unwrap()] {
time."dt-published"[datetime=post["properties"]["published"][0].as_str().unwrap()] {
@chrono::DateTime::parse_from_rfc3339(post["properties"]["published"][0].as_str().unwrap())
.map(|dt| dt.format("%a %b %e %T %Y").to_string())
.unwrap_or("ERROR: Couldn't parse the datetime".to_string())
}
}
}
@if post["properties"]["category"].is_array() {
span {
ul.categories {
"Tagged: "
@for cat in post["properties"]["category"].as_array().unwrap() {
li."p-category" { @cat.as_str().unwrap() }
}
}
}
}
@if post["properties"]["in-reply-to"].is_array() {
// TODO: Rich reply contexts - blocked on MF2 parser
span {
"In reply to: "
ul.replyctx {
@for ctx in post["properties"]["in-reply-to"].as_array().unwrap() {
li { a."u-in-reply-to"[href=ctx.as_str().unwrap()] {
@ctx.as_str().unwrap().truncate_ellipse(24).as_ref()
} }
}
}
}
}
}
@if post["properties"]["location"].is_array() || post["properties"]["checkin"].is_array() {
div {
@if post["properties"]["checkin"].is_array() {
span {
"Check-in to: "
@if post["properties"]["checkin"][0].is_string() {
// It's a URL
a."u-checkin"[href=post["properties"]["checkin"][0].as_str().unwrap()] {
@post["properties"]["checkin"][0].as_str().unwrap().truncate_ellipse(24).as_ref()
}
} else {
a."u-checkin"[href=post["properties"]["checkin"][0]["properties"]["uid"][0].as_str().unwrap()] {
@post["properties"]["checkin"][0]["properties"]["name"][0].as_str().unwrap()
}
}
}
}
@if post["properties"]["location"].is_array() {
span {
"Location: "
@if post["properties"]["location"][0].is_string() {
// It's a geo: URL
// We need to decode it
a."u-location"[href=post["properties"]["location"][0].as_str().unwrap()] {
@decode_geo_uri(post["properties"]["location"][0].as_str().unwrap())
}
} else {
// It's an inner h-geo object
a."u-location"[href=post["properties"]["location"][0]["value"].as_str().map(|x| x.to_string()).unwrap_or(format!("geo:{},{}", post["properties"]["location"][0]["properties"]["latitude"][0].as_str().unwrap(), post["properties"]["location"][0]["properties"]["longitude"][0].as_str().unwrap()))] {
// I'm a lazy bitch
@decode_geo_uri(&post["properties"]["location"][0]["value"].as_str().map(|x| x.to_string()).unwrap_or(format!("geo:{},{}", post["properties"]["location"][0]["properties"]["latitude"][0].as_str().unwrap(), post["properties"]["location"][0]["properties"]["longitude"][0].as_str().unwrap())))
}
}
}
}
}
}
@if post["properties"]["ate"].is_array() || post["properties"]["drank"].is_array() {
div {
@if post["properties"]["ate"].is_array() {
span { ul {
"Ate:"
@for food in post["properties"]["ate"].as_array().unwrap() {
li {
@if food.is_string() {
// If this is a string, it's a URL.
a."u-ate"[href=food.as_str().unwrap()] {
@food.as_str().unwrap().truncate_ellipse(24).as_ref()
}
} else {
// This is a rich food object (mm, sounds tasty! I wanna eat something tasty)
a."u-ate"[href=food["properties"]["uid"][0].as_str().unwrap()] {
@food["properties"]["name"][0].as_str()
.unwrap_or(food["properties"]["uid"][0].as_str().unwrap().truncate_ellipse(24).as_ref())
}
}
}
}
} }
}
@if post["properties"]["drank"].is_array() {
span { ul {
"Drank:"
@for food in post["properties"]["drank"].as_array().unwrap() {
li {
@if food.is_string() {
// If this is a string, it's a URL.
a."u-drank"[href=food.as_str().unwrap()] {
@food.as_str().unwrap().truncate_ellipse(24).as_ref()
}
} else {
// This is a rich food object (mm, sounds tasty! I wanna eat something tasty)
a."u-drank"[href=food["properties"]["uid"][0].as_str().unwrap()] {
@food["properties"]["name"][0].as_str()
.unwrap_or(food["properties"]["uid"][0].as_str().unwrap().truncate_ellipse(24).as_ref())
}
}
}
}
} }
}
}
}
}
@PhotoGallery { photos: post["properties"]["photo"].as_array() }
@if post["properties"]["content"][0]["html"].is_string() {
main."e-content" {
@markup::raw(post["properties"]["content"][0]["html"].as_str().unwrap().trim())
}
}
@WebInteractions { post: post }
}
}
PhotoGallery<'a>(photos: Option<&'a Vec<serde_json::Value>>) {
@if photos.is_some() {
@for photo in photos.unwrap() {
@if photo.is_string() {
img."u-photo"[src=photo.as_str().unwrap(), loading="lazy"];
} else if photo.is_array() {
img."u-photo"[src=photo["value"].as_str().unwrap(), loading="lazy", alt=photo["alt"].as_str().unwrap_or("")];
}
}
}
}
WebInteractions<'a>(post: &'a serde_json::Value) {
footer.webinteractions {
ul.counters {
li {
span.icon { "❤️" }
span.counter { @post["properties"]["like"].as_array().map(|a| a.len()).unwrap_or(0) }
}
li {
span.icon { "💬" }
span.counter { @post["properties"]["comment"].as_array().map(|a| a.len()).unwrap_or(0) }
}
li {
span.icon { "🔄" }
span.counter { @post["properties"]["repost"].as_array().map(|a| a.len()).unwrap_or(0) }
}
li {
span.icon { "🔖" }
span.counter { @post["properties"]["bookmark"].as_array().map(|a| a.len()).unwrap_or(0) }
}
}
// Needs rich webmention support which may or may not depend on an MF2 parser
// Might circumvent with an external parser with CORS support
// why write this stuff in rust then tho
/*details {
summary { "Show comments and reactions" }
@if post["properties"]["like"].as_array().map(|a| a.len()).unwrap_or(0) > 0 {
// Show a facepile of likes for a post
}
@if post["properties"]["bookmark"].as_array().map(|a| a.len()).unwrap_or(0) > 0 {
// Show a facepile of bookmarks for a post
}
@if post["properties"]["repost"].as_array().map(|a| a.len()).unwrap_or(0) > 0 {
// Show a facepile of reposts for a post
}
@if post["properties"]["comment"].as_array().map(|a| a.len()).unwrap_or(0) > 0 {
// Show all the comments recursively (so we could do Salmention with them)
}
}*/
}
}
VCard<'a>(card: &'a serde_json::Value) {
article."h-card" {
@if card["properties"]["photo"][0].is_string() {
img."u-photo"[src=card["properties"]["photo"][0].as_str().unwrap()];
}
h1 {
a."u-url"."u-uid"."p-name"[href=card["properties"]["uid"][0].as_str().unwrap()] {
@card["properties"]["name"][0].as_str().unwrap()
}
}
@if card["properties"]["pronoun"].is_array() {
span {
"("
@for (i, pronoun) in card["properties"]["pronoun"].as_array().unwrap().iter().filter_map(|v| v.as_str()).enumerate() {
span."p-pronoun" {
@pronoun
}
// Insert commas between multiple sets of pronouns
@if i < (card["properties"]["pronoun"].as_array().unwrap().len() - 1) {", "}
}
")"
}
}
p."p-note" {
@card["properties"]["note"][0]["value"].as_str().unwrap_or_else(|| card["properties"]["note"][0].as_str().unwrap())
}
}
}
Food<'a>(food: &'a serde_json::Value) {
article."h-food" {
header.metadata {
h1 {
a."p-name"."u-url"[href=food["properties"]["url"][0].as_str().unwrap()] {
@food["properties"]["name"][0].as_str().unwrap()
}
}
}
@PhotoGallery { photos: food["properties"]["photo"].as_array() }
}
}
Feed<'a>(feed: &'a serde_json::Value) {
div."h-feed" {
div.metadata {
@if feed["properties"]["name"][0].is_string() {
h1."p-name".titanic {
a[href=feed["properties"]["uid"][0].as_str().unwrap(), rel="feed"] {
@feed["properties"]["name"][0].as_str().unwrap()
}
}
}
}
@if feed["children"].is_array() {
@for child in feed["children"].as_array().unwrap() {
@match child["type"][0].as_str().unwrap() {
"h-entry" => { @Entry { post: child } }
"h-feed" => { @Feed { feed: child } }
"h-event" => {
@{error!("Templating error: h-events aren't implemented yet");}
}
"h-card" => { @VCard { card: child }}
something_else => {
@{error!("Templating error: found a {} object that couldn't be parsed", something_else);}
}
}
}
}
@if feed["children"].as_array().map(|a| a.len()).unwrap_or(0) == 0 {
p {
"Looks like you reached the end. Wanna jump back to the "
a[href=feed["properties"]["uid"][0].as_str().unwrap()] {
"beginning"
} "?"
}
}
@if feed["children"].as_array().map(|a| a.len()).unwrap_or(0) == super::POSTS_PER_PAGE {
a[rel="prev", href=feed["properties"]["uid"][0].as_str().unwrap().to_string()
+ "?after=" + feed["children"][super::POSTS_PER_PAGE - 1]["properties"]["uid"][0].as_str().unwrap()] {
"Older posts"
}
}
}
}
MainPage<'a>(feed: &'a serde_json::Value, card: &'a serde_json::Value) {
.sidebyside {
@VCard { card }
#dynamicstuff {
p { "This section will provide interesting statistics or tidbits about my life in this exact moment (with maybe a small delay)." }
p { "It will probably require JavaScript to self-update, but I promise to keep this widget lightweight and open-source!" }
p { small {
"JavaScript isn't a menace, stop fearing it or I will switch to WebAssembly "
"and knock your nico-nico-kneecaps so fast with its speed you won't even notice that... "
small { "omae ha mou shindeiru" }
// NANI?!!!
} }
}
}
@Feed { feed }
}
ErrorPage(code: StatusCode) {
h1 { @format!("HTTP {} {}", code, code.canonical_reason()) }
@match code {
StatusCode::Unauthorized => {
p { "Looks like you need to authenticate yourself before seeing this page. Try logging in with IndieAuth using the Login button above!" }
}
StatusCode::Forbidden => {
p { "Looks like you're forbidden from viewing this page." }
p {
"This might've been caused by being banned from viewing my website"
"or simply by trying to see what you're not supposed to see, "
"like a private post that's not intended for you. It's ok, it happens."
}
}
StatusCode::Gone => {
p { "Looks like the page you're trying to find is gone and is never coming back." }
}
StatusCode::UnavailableForLegalReasons => {
p { "The page is there, but I can't legally provide it to you because the censorship said so." }
}
StatusCode::NotFound => {
p { "Looks like there's no such page. Maybe you or someone else mistyped a URL or my database experienced data loss." }
}
StatusCode::ImATeapot => {
p { "Wait, do you seriously expect my website to brew you coffee? It's not a coffee machine!" }
p {
small { "I could brew you some coffee tho if we meet one day... "
small { i { "i-it's nothing personal, I just like brewing coffee, b-baka!!!~ >.<!" } } }
}
}
_ => { p { "It seems like you have found an error. Not to worry, it has already been logged." } }
}
P { "For now, may I suggest to visit " a[href="/"] {"the main page"} " of this website?" }
}
}
}
use templates::{Template,ErrorPage,MainPage};
#[derive(Clone, Serialize, Deserialize)]
pub struct IndiewebEndpoints {
authorization_endpoint: String,
token_endpoint: String,
webmention: Option<String>,
microsub: Option<String>
}
#[derive(Deserialize)]
struct QueryParams {
after: Option<String>
}
#[derive(Debug)]
struct FrontendError {
msg: String,
source: Option<Box<dyn std::error::Error + Send + Sync + 'static>>,
code: StatusCode
}
impl FrontendError {
pub fn with_code(code: StatusCode, msg: &str) -> Self {
Self { msg: msg.to_string(), source: None, code }
}
pub fn msg(&self) -> &str { &self.msg }
pub fn code(&self) -> StatusCode { self.code }
}
impl From<crate::database::StorageError> for FrontendError {
fn from(err: crate::database::StorageError) -> Self {
Self {
msg: "Database error".to_string(),
source: Some(Box::new(err)),
code: StatusCode::InternalServerError
}
}
}
impl std::error::Error for FrontendError {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
self.source.as_ref().map(|e| e.as_ref() as &(dyn std::error::Error + 'static))
}
}
impl std::fmt::Display for FrontendError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.msg)
}
}
async fn get_post_from_database<S: Storage>(db: &S, url: &str, after: Option<String>, user: &Option<String>) -> std::result::Result<serde_json::Value, FrontendError> {
match db.read_feed_with_limit(url, &after, POSTS_PER_PAGE, user).await {
Ok(result) => match result {
Some(post) => Ok(post),
None => Err(FrontendError::with_code(StatusCode::NotFound, "Post not found in the database"))
},
Err(err) => match err.kind() {
crate::database::ErrorKind::PermissionDenied => {
// TODO: Authentication
if user.is_some() {
Err(FrontendError::with_code(StatusCode::Forbidden, "User authenticated AND forbidden to access this resource"))
} else {
Err(FrontendError::with_code(StatusCode::Unauthorized, "User needs to authenticate themselves"))
}
}
_ => Err(err.into())
}
}
}
pub async fn coffee<S: Storage>(_: Request<ApplicationState<S>>) -> Result {
Err(FrontendError::with_code(StatusCode::ImATeapot, "Someone asked this website to brew them some coffee..."))?;
return Ok(Response::builder(500).build()) // unreachable
}
pub async fn mainpage<S: Storage>(req: Request<ApplicationState<S>>) -> Result {
let backend = &req.state().storage;
let query = req.query::<QueryParams>()?;
let authorization_endpoint = req.state().authorization_endpoint.to_string();
let token_endpoint = req.state().token_endpoint.to_string();
let user: Option<String> = None;
#[cfg(any(not(debug_assertions), test))]
let url = req.url();
#[cfg(all(debug_assertions, not(test)))]
let url = url::Url::parse("http://localhost:8080/").unwrap();
info!("Request at {}", url);
let hcard_url = url.as_str();
let feed_url = url.join("feeds/main").unwrap().to_string();
let card = get_post_from_database(backend, hcard_url, None, &user).await;
let feed = get_post_from_database(backend, &feed_url, query.after, &user).await;
if card.is_err() && feed.is_err() {
// Uh-oh! No main feed and no h-card? Need to do onboarding.
// We can do it from inside the app without ever requesting an auth token.
let card_err = card.unwrap_err();
let feed_err = feed.unwrap_err();
if card_err.code == 404 {
// Yes, we definitely need some onboarding here.
todo!()
} else {
Err(feed_err)?
}
} else {
Ok(Response::builder(200)
.content_type("text/html; charset=utf-8")
.body(Template {
title: &format!("{} - Main page", url.host().unwrap().to_string()),
endpoints: IndiewebEndpoints {
authorization_endpoint, token_endpoint,
webmention: None, microsub: None
},
content: MainPage {
feed: &feed?,
card: &card?
}.to_string()
}.to_string()
).build())
}
}
pub async fn render_post<S: Storage>(req: Request<ApplicationState<S>>) -> Result {
let query = req.query::<QueryParams>()?;
let authorization_endpoint = req.state().authorization_endpoint.to_string();
let token_endpoint = req.state().token_endpoint.to_string();
let user: Option<String> = None;
#[cfg(any(not(debug_assertions), test))]
let url = req.url();
#[cfg(all(debug_assertions, not(test)))]
let url = url::Url::parse("http://localhost:8080/").unwrap().join(req.url().path()).unwrap();
let post = get_post_from_database(&req.state().storage, url.as_str(), query.after, &user).await?;
let template: String = match post["type"][0].as_str().expect("Empty type array or invalid type") {
"h-entry" => templates::Entry { post: &post }.to_string(),
"h-card" => templates::VCard { card: &post }.to_string(),
"h-feed" => templates::Feed { feed: &post }.to_string(),
_ => Err(FrontendError::with_code(StatusCode::InternalServerError, "Couldn't render an unknown type"))?
};
Ok(Response::builder(200)
.content_type("text/html; charset=utf-8")
.body(Template {
title: post["properties"]["name"][0].as_str().unwrap_or(&format!("Note at {}", url.host().unwrap().to_string())),
endpoints: IndiewebEndpoints {
authorization_endpoint, token_endpoint,
webmention: None, microsub: None
},
content: template
}.to_string()
).build())
}
pub struct ErrorHandlerMiddleware {}
#[async_trait::async_trait]
impl<S> tide::Middleware<ApplicationState<S>> for ErrorHandlerMiddleware where
S: crate::database::Storage
{
async fn handle(&self, request: Request<ApplicationState<S>>, next: Next<'_, ApplicationState<S>>) -> Result {
let authorization_endpoint = request.state().authorization_endpoint.to_string();
let token_endpoint = request.state().token_endpoint.to_string();
let mut res = next.run(request).await;
let mut code: Option<StatusCode> = None;
if let Some(err) = res.downcast_error::<FrontendError>() {
code = Some(err.code());
error!("Error caught while processing request: {}", err.msg());
let mut err: &dyn std::error::Error = err;
while let Some(e) = err.source() {
error!("Caused by: {}", e);
err = e;
}
}
if let Some(code) = code {
res.set_status(code);
res.set_content_type("text/html; charset=utf-8");
res.set_body(Template {
title: "Error",
endpoints: IndiewebEndpoints {
authorization_endpoint, token_endpoint,
webmention: None, microsub: None
},
content: ErrorPage { code }.to_string()
}.to_string());
}
Ok(res)
}
}
static STYLE_CSS: &[u8] = include_bytes!("./style.css");
pub async fn handle_static<S: Storage>(req: Request<ApplicationState<S>>) -> Result {
Ok(match req.param("path") {
Ok("style.css") => Ok(Response::builder(200)
.content_type("text/css; charset=utf-8")
.body(STYLE_CSS)
.build()),
Ok(_) => Err(FrontendError::with_code(StatusCode::NotFound, "Static file not found")),
Err(_) => panic!("Invalid usage of the frontend::handle_static() function")
}?)
}