mirror of https://github.com/spikecodes/libreddit
184 lines
5.4 KiB
Rust
184 lines
5.4 KiB
Rust
// CRATES
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use crate::utils::{self, catch_random, error, filter_posts, format_num, format_url, get_filters, param, redirect, setting, template, val, Post, Preferences};
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use crate::{
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client::json,
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subreddit::{can_access_quarantine, quarantine},
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RequestExt,
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};
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use askama::Template;
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use hyper::{Body, Request, Response};
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use once_cell::sync::Lazy;
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use regex::Regex;
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// STRUCTS
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struct SearchParams {
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q: String,
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sort: String,
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t: String,
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before: String,
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after: String,
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restrict_sr: String,
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typed: String,
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}
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// STRUCTS
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struct Subreddit {
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name: String,
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url: String,
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icon: String,
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description: String,
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subscribers: (String, String),
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}
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#[derive(Template)]
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#[template(path = "search.html")]
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struct SearchTemplate {
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posts: Vec<Post>,
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subreddits: Vec<Subreddit>,
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sub: String,
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params: SearchParams,
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prefs: Preferences,
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url: String,
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/// Whether the subreddit itself is filtered.
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is_filtered: bool,
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/// Whether all fetched posts are filtered (to differentiate between no posts fetched in the first place,
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/// and all fetched posts being filtered).
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all_posts_filtered: bool,
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/// Whether all posts were hidden because they are NSFW (and user has disabled show NSFW)
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all_posts_hidden_nsfw: bool,
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no_posts: bool,
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}
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// Regex matched against search queries to determine if they are reddit urls.
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static REDDIT_URL_MATCH: Lazy<Regex> = Lazy::new(|| Regex::new(r"^https?://([^\./]+\.)*reddit.com/").unwrap());
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// SERVICES
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pub async fn find(req: Request<Body>) -> Result<Response<Body>, String> {
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// This ensures that during a search, no NSFW posts are fetched at all
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let nsfw_results = if setting(&req, "show_nsfw") == "on" && !utils::sfw_only() {
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"&include_over_18=on"
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} else {
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""
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};
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let path = format!("{}.json?{}{}&raw_json=1", req.uri().path(), req.uri().query().unwrap_or_default(), nsfw_results);
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let mut query = param(&path, "q").unwrap_or_default();
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query = REDDIT_URL_MATCH.replace(&query, "").to_string();
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if query.is_empty() {
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return Ok(redirect("/".to_string()));
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}
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if query.starts_with("r/") {
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return Ok(redirect(format!("/{}", query)));
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}
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let sub = req.param("sub").unwrap_or_default();
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let quarantined = can_access_quarantine(&req, &sub);
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// Handle random subreddits
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if let Ok(random) = catch_random(&sub, "/find").await {
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return Ok(random);
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}
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let typed = param(&path, "type").unwrap_or_default();
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let sort = param(&path, "sort").unwrap_or_else(|| "relevance".to_string());
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let filters = get_filters(&req);
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// If search is not restricted to this subreddit, show other subreddits in search results
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let subreddits = if param(&path, "restrict_sr").is_none() {
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let mut subreddits = search_subreddits(&query, &typed).await;
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subreddits.retain(|s| !filters.contains(s.name.as_str()));
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subreddits
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} else {
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Vec::new()
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};
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let url = String::from(req.uri().path_and_query().map_or("", |val| val.as_str()));
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// If all requested subs are filtered, we don't need to fetch posts.
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if sub.split('+').all(|s| filters.contains(s)) {
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template(SearchTemplate {
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posts: Vec::new(),
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subreddits,
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sub,
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params: SearchParams {
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q: query.replace('"', """),
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sort,
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t: param(&path, "t").unwrap_or_default(),
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before: param(&path, "after").unwrap_or_default(),
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after: "".to_string(),
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restrict_sr: param(&path, "restrict_sr").unwrap_or_default(),
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typed,
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},
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prefs: Preferences::new(&req),
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url,
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is_filtered: true,
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all_posts_filtered: false,
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all_posts_hidden_nsfw: false,
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no_posts: false,
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})
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} else {
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match Post::fetch(&path, quarantined).await {
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Ok((mut posts, after)) => {
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let (_, all_posts_filtered) = filter_posts(&mut posts, &filters);
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let no_posts = posts.is_empty();
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let all_posts_hidden_nsfw = !no_posts && (posts.iter().all(|p| p.flags.nsfw) && setting(&req, "show_nsfw") != "on");
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template(SearchTemplate {
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posts,
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subreddits,
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sub,
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params: SearchParams {
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q: query.replace('"', """),
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sort,
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t: param(&path, "t").unwrap_or_default(),
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before: param(&path, "after").unwrap_or_default(),
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after,
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restrict_sr: param(&path, "restrict_sr").unwrap_or_default(),
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typed,
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},
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prefs: Preferences::new(&req),
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url,
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is_filtered: false,
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all_posts_filtered,
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all_posts_hidden_nsfw,
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no_posts,
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})
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}
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Err(msg) => {
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if msg == "quarantined" || msg == "gated" {
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let sub = req.param("sub").unwrap_or_default();
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quarantine(req, sub, msg)
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} else {
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error(req, msg).await
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}
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}
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}
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}
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}
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async fn search_subreddits(q: &str, typed: &str) -> Vec<Subreddit> {
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let limit = if typed == "sr_user" { "50" } else { "3" };
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let subreddit_search_path = format!("/subreddits/search.json?q={}&limit={}", q.replace(' ', "+"), limit);
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// Send a request to the url
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json(subreddit_search_path, false).await.unwrap_or_default()["data"]["children"]
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.as_array()
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.map(ToOwned::to_owned)
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.unwrap_or_default()
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.iter()
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.map(|subreddit| {
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// For each subreddit from subreddit list
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// Fetch subreddit icon either from the community_icon or icon_img value
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let icon = subreddit["data"]["community_icon"].as_str().map_or_else(|| val(subreddit, "icon_img"), ToString::to_string);
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Subreddit {
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name: val(subreddit, "display_name"),
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url: val(subreddit, "url"),
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icon: format_url(&icon),
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description: val(subreddit, "public_description"),
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subscribers: format_num(subreddit["data"]["subscribers"].as_f64().unwrap_or_default() as i64),
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}
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})
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.collect::<Vec<Subreddit>>()
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}
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