use crate::{
config::{Config, CONFIG},
server::RequestExt,
utils::{ErrorTemplate, Preferences},
};
use askama::Template;
use build_html::{Container, Html, HtmlContainer, Table};
use hyper::{http::Error, Body, Request, Response};
use once_cell::sync::Lazy;
use serde::{Deserialize, Serialize};
use time::OffsetDateTime;
// This is the local static that is intialized at runtime (technically at
// the first request to the info endpoint) and contains the data
// retrieved from the info endpoint.
pub static INSTANCE_INFO: Lazy<InstanceInfo> = Lazy::new(InstanceInfo::new);
/// Handles instance info endpoint
pub async fn instance_info(req: Request<Body>) -> Result<Response<Body>, String> {
// This will retrieve the extension given, or create a new string - which will
// simply become the last option, an HTML page.
let extension = req.param("extension").unwrap_or_default();
let response = match extension.as_str() {
"yaml" | "yml" => info_yaml(),
"txt" => info_txt(),
"json" => info_json(),
"html" | "" => info_html(&req),
_ => {
let error = ErrorTemplate {
msg: "Error: Invalid info extension".into(),
prefs: Preferences::new(&req),
url: req.uri().to_string(),
}
.render()
.unwrap();
Response::builder().status(404).header("content-type", "text/html; charset=utf-8").body(error.into())
}
};
response.map_err(|err| format!("{err}"))
}
fn info_json() -> Result<Response<Body>, Error> {
if let Ok(body) = serde_json::to_string(&*INSTANCE_INFO) {
Response::builder().status(200).header("content-type", "application/json").body(body.into())
} else {
Response::builder()
.status(500)
.header("content-type", "text/plain")
.body(Body::from("Error serializing JSON"))
}
}
fn info_yaml() -> Result<Response<Body>, Error> {
if let Ok(body) = serde_yaml::to_string(&*INSTANCE_INFO) {
// We can use `application/yaml` as media type, though there is no guarantee
// that browsers will honor it. But we'll do it anyway. See:
// https://github.com/ietf-wg-httpapi/mediatypes/blob/main/draft-ietf-httpapi-yaml-mediatypes.md#media-type-applicationyaml-application-yaml
Response::builder().status(200).header("content-type", "application/yaml").body(body.into())
} else {
Response::builder()
.status(500)
.header("content-type", "text/plain")
.body(Body::from("Error serializing YAML."))
}
}
fn info_txt() -> Result<Response<Body>, Error> {
Response::builder()
.status(200)
.header("content-type", "text/plain")
.body(Body::from(INSTANCE_INFO.to_string(&StringType::Raw)))
}
fn info_html(req: &Request<Body>) -> Result<Response<Body>, Error> {
let message = MessageTemplate {
title: String::from("Instance information"),
body: INSTANCE_INFO.to_string(&StringType::Html),
prefs: Preferences::new(req),
url: req.uri().to_string(),
}
.render()
.unwrap();
Response::builder().status(200).header("content-type", "text/html; charset=utf8").body(Body::from(message))
}
#[derive(Serialize, Deserialize, Default)]
pub struct InstanceInfo {
package_name: String,
crate_version: String,
git_commit: String,
deploy_date: String,
compile_mode: String,
deploy_unix_ts: i64,
config: Config,
}
impl InstanceInfo {
pub fn new() -> Self {
Self {
package_name: env!("CARGO_PKG_NAME").to_string(),
crate_version: env!("CARGO_PKG_VERSION").to_string(),
git_commit: env!("GIT_HASH").to_string(),
deploy_date: OffsetDateTime::now_local().unwrap_or_else(|_| OffsetDateTime::now_utc()).to_string(),
#[cfg(debug_assertions)]
compile_mode: "Debug".into(),
#[cfg(not(debug_assertions))]
compile_mode: "Release".into(),
deploy_unix_ts: OffsetDateTime::now_local().unwrap_or_else(|_| OffsetDateTime::now_utc()).unix_timestamp(),
config: CONFIG.clone(),
}
}
fn to_table(&self) -> String {
let mut container = Container::default();
let convert = |o: &Option<String>| -> String { o.clone().unwrap_or_else(|| "<span class=\"unset\"><i>Unset</i></span>".to_owned()) };
if let Some(banner) = &self.config.banner {
container.add_header(3, "Instance banner");
container.add_raw("<br />");
container.add_paragraph(banner);
container.add_raw("<br />");
}
container.add_table(
Table::from([
["Package name", &self.package_name],
["Crate version", &self.crate_version],
["Git commit", &self.git_commit],
["Deploy date", &self.deploy_date],
["Deploy timestamp", &self.deploy_unix_ts.to_string()],
["Compile mode", &self.compile_mode],
["SFW only", &convert(&self.config.sfw_only)],
["Pushshift frontend", &convert(&self.config.pushshift)],
//TODO: fallback to crate::config::DEFAULT_PUSHSHIFT_FRONTEND
])
.with_header_row(["Settings"]),
);
container.add_raw("<br />");
container.add_table(
Table::from([
["Hide awards", &convert(&self.config.default_hide_awards)],
["Hide score", &convert(&self.config.default_hide_score)],
["Theme", &convert(&self.config.default_theme)],
["Front page", &convert(&self.config.default_front_page)],
["Layout", &convert(&self.config.default_layout)],
["Wide", &convert(&self.config.default_wide)],
["Comment sort", &convert(&self.config.default_comment_sort)],
["Post sort", &convert(&self.config.default_post_sort)],
["Blur Spoiler", &convert(&self.config.default_blur_spoiler)],
["Show NSFW", &convert(&self.config.default_show_nsfw)],
["Blur NSFW", &convert(&self.config.default_blur_nsfw)],
["Use HLS", &convert(&self.config.default_use_hls)],
["Hide HLS notification", &convert(&self.config.default_hide_hls_notification)],
["Subscriptions", &convert(&self.config.default_subscriptions)],
["Filters", &convert(&self.config.default_filters)],
])
.with_header_row(["Default preferences"]),
);
container.to_html_string().replace("<th>", "<th colspan=\"2\">")
}
fn to_string(&self, string_type: &StringType) -> String {
match string_type {
StringType::Raw => {
format!(
"Package name: {}\n
Crate version: {}\n
Git commit: {}\n
Deploy date: {}\n
Deploy timestamp: {}\n
Compile mode: {}\n
SFW only: {:?}\n
Pushshift frontend: {:?}\n
Config:\n
Banner: {:?}\n
Hide awards: {:?}\n
Hide score: {:?}\n
Default theme: {:?}\n
Default front page: {:?}\n
Default layout: {:?}\n
Default wide: {:?}\n
Default comment sort: {:?}\n
Default post sort: {:?}\n
Default blur Spoiler: {:?}\n
Default show NSFW: {:?}\n
Default blur NSFW: {:?}\n
Default use HLS: {:?}\n
Default hide HLS notification: {:?}\n
Default subscriptions: {:?}\n
Default filters: {:?}\n",
self.package_name,
self.crate_version,
self.git_commit,
self.deploy_date,
self.deploy_unix_ts,
self.compile_mode,
self.config.sfw_only,
self.config.pushshift,
self.config.banner,
self.config.default_hide_awards,
self.config.default_hide_score,
self.config.default_theme,
self.config.default_front_page,
self.config.default_layout,
self.config.default_wide,
self.config.default_comment_sort,
self.config.default_post_sort,
self.config.default_blur_spoiler,
self.config.default_show_nsfw,
self.config.default_blur_nsfw,
self.config.default_use_hls,
self.config.default_hide_hls_notification,
self.config.default_subscriptions,
self.config.default_filters,
)
}
StringType::Html => self.to_table(),
}
}
}
enum StringType {
Raw,
Html,
}
#[derive(Template)]
#[template(path = "message.html")]
struct MessageTemplate {
title: String,
body: String,
prefs: Preferences,
url: String,
}