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Feat: search for comments within posts

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Add the ability to search for specific comments within posts.
Known issues:
  - Just like on reddit, this does not work with comment sorting. The
    sorting order is ignored during the search and changing the sorting
    order after the search does not change anything. I do not think we
    can fix this before reddit does, since in my understanding we rely
    on them for the sorting. However we could implement a default
    sorting method ourselves by taking the vector of comments returned
    from the search and sorting it manually.
  - The UI could be improved on mobile. On screens with a max width
    inferior to 480 pixels, the comment search bar is displayed below
    the comment sorting form. It would be great if we could make the
    search bar have the same width as the whole comment sorting form
    but I do not have the willpower to write any more css.
This commit is contained in:
gmnsii 2023-03-24 17:41:26 -07:00
parent e25622dac2
commit 1e418619f1
6 changed files with 187 additions and 103 deletions
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4
build.rs
View file

@ -1,6 +1,4 @@
use std::{
process::{Command, ExitStatus, Output},
};
use std::process::{Command, ExitStatus, Output};
#[cfg(not(target_os = "windows"))]
use std::os::unix::process::ExitStatusExt;

233
src/post.rs
View file

@ -8,6 +8,8 @@ use crate::utils::{
use hyper::{Body, Request, Response};
use askama::Template;
use once_cell::sync::Lazy;
use regex::Regex;
use std::collections::HashSet;
// STRUCTS
@ -20,13 +22,18 @@ struct PostTemplate {
prefs: Preferences,
single_thread: bool,
url: String,
url_without_query: String,
comment_query: String,
}
static COMMENT_SEARCH_CAPTURE: Lazy<Regex> = Lazy::new(|| Regex::new(r#"\?q=(.*)&type=comment"#).unwrap());
pub async fn item(req: Request<Body>) -> Result<Response<Body>, String> {
// Build Reddit API path
let mut path: String = format!("{}.json?{}&raw_json=1", req.uri().path(), req.uri().query().unwrap_or_default());
let sub = req.param("sub").unwrap_or_default();
let quarantined = can_access_quarantine(&req, &sub);
let url = req.uri().to_string();
// Set sort to sort query parameter
let sort = param(&path, "sort").unwrap_or_else(|| {
@ -63,17 +70,26 @@ pub async fn item(req: Request<Body>) -> Result<Response<Body>, String> {
return Ok(nsfw_landing(req).await.unwrap_or_default());
}
let comments = parse_comments(&response[1], &post.permalink, &post.author.name, highlighted_comment, &get_filters(&req), &req);
let url = req.uri().to_string();
let query = match COMMENT_SEARCH_CAPTURE.captures(&url) {
Some(captures) => captures.get(1).unwrap().as_str().replace("%20", " ").replace("+", " "),
None => String::new(),
};
let comments = match query.as_str() {
"" => parse_comments(&response[1], &post.permalink, &post.author.name, highlighted_comment, &get_filters(&req), &req),
_ => query_comments(&response[1], &post.permalink, &post.author.name, highlighted_comment, &get_filters(&req), &query, &req),
};
// Use the Post and Comment structs to generate a website to show users
template(PostTemplate {
comments,
post,
url_without_query: url.clone().trim_end_matches(&format!("?q={query}&type=comment")).to_string(),
sort,
prefs: Preferences::new(&req),
single_thread,
url,
comment_query: query,
})
}
// If the Reddit API returns an error, exit and send error page to user
@ -88,7 +104,8 @@ pub async fn item(req: Request<Body>) -> Result<Response<Body>, String> {
}
}
// COMMENTS
/* COMMENTS */
fn parse_comments(json: &serde_json::Value, post_link: &str, post_author: &str, highlighted_comment: &str, filters: &HashSet<String>, req: &Request<Body>) -> Vec<Comment> {
// Parse the comment JSON into a Vector of Comments
let comments = json["data"]["children"].as_array().map_or(Vec::new(), std::borrow::ToOwned::to_owned);
@ -97,96 +114,136 @@ fn parse_comments(json: &serde_json::Value, post_link: &str, post_author: &str,
comments
.into_iter()
.map(|comment| {
let kind = comment["kind"].as_str().unwrap_or_default().to_string();
let data = &comment["data"];
let unix_time = data["created_utc"].as_f64().unwrap_or_default();
let (rel_time, created) = time(unix_time);
let edited = data["edited"].as_f64().map_or((String::new(), String::new()), time);
let score = data["score"].as_i64().unwrap_or(0);
// The JSON API only provides comments up to some threshold.
// Further comments have to be loaded by subsequent requests.
// The "kind" value will be "more" and the "count"
// shows how many more (sub-)comments exist in the respective nesting level.
// Note that in certain (seemingly random) cases, the count is simply wrong.
let more_count = data["count"].as_i64().unwrap_or_default();
// If this comment contains replies, handle those too
let replies: Vec<Comment> = if data["replies"].is_object() {
parse_comments(&data["replies"], post_link, post_author, highlighted_comment, filters, req)
} else {
Vec::new()
Vec::with_capacity(0)
};
let awards: Awards = Awards::parse(&data["all_awardings"]);
let parent_kind_and_id = val(&comment, "parent_id");
let parent_info = parent_kind_and_id.split('_').collect::<Vec<&str>>();
let id = val(&comment, "id");
let highlighted = id == highlighted_comment;
let body = if (val(&comment, "author") == "[deleted]" && val(&comment, "body") == "[removed]") || val(&comment, "body") == "[ Removed by Reddit ]" {
format!(
"<div class=\"md\"><p>[removed] — <a href=\"https://www.unddit.com{}{}\">view removed comment</a></p></div>",
post_link, id
)
} else {
rewrite_urls(&val(&comment, "body_html"))
};
let author = Author {
name: val(&comment, "author"),
flair: Flair {
flair_parts: FlairPart::parse(
data["author_flair_type"].as_str().unwrap_or_default(),
data["author_flair_richtext"].as_array(),
data["author_flair_text"].as_str(),
),
text: val(&comment, "link_flair_text"),
background_color: val(&comment, "author_flair_background_color"),
foreground_color: val(&comment, "author_flair_text_color"),
},
distinguished: val(&comment, "distinguished"),
};
let is_filtered = filters.contains(&["u_", author.name.as_str()].concat());
// Many subreddits have a default comment posted about the sub's rules etc.
// Many libreddit users do not wish to see this kind of comment by default.
// Reddit does not tell us which users are "bots", so a good heuristic is to
// collapse stickied moderator comments.
let is_moderator_comment = data["distinguished"].as_str().unwrap_or_default() == "moderator";
let is_stickied = data["stickied"].as_bool().unwrap_or_default();
let collapsed = (is_moderator_comment && is_stickied) || is_filtered;
Comment {
id,
kind,
parent_id: parent_info[1].to_string(),
parent_kind: parent_info[0].to_string(),
post_link: post_link.to_string(),
post_author: post_author.to_string(),
body,
author,
score: if data["score_hidden"].as_bool().unwrap_or_default() {
("\u{2022}".to_string(), "Hidden".to_string())
} else {
format_num(score)
},
rel_time,
created,
edited,
replies,
highlighted,
awards,
collapsed,
is_filtered,
more_count,
prefs: Preferences::new(req),
}
build_comment(&comment, data, replies, post_link, post_author, highlighted_comment, filters, req)
})
.collect()
}
fn query_comments(
json: &serde_json::Value,
post_link: &str,
post_author: &str,
highlighted_comment: &str,
filters: &HashSet<String>,
query: &str,
req: &Request<Body>,
) -> Vec<Comment> {
let comments = json["data"]["children"].as_array().map_or(Vec::new(), std::borrow::ToOwned::to_owned);
let mut results = Vec::new();
comments.into_iter().for_each(|comment| {
let data = &comment["data"];
// If this comment contains replies, handle those too
if data["replies"].is_object() {
results.append(&mut query_comments(&data["replies"], post_link, post_author, highlighted_comment, filters, query, req))
}
let c = build_comment(&comment, data, Vec::with_capacity(0), post_link, post_author, highlighted_comment, filters, req);
if c.body.to_lowercase().contains(&query.to_lowercase()) {
results.push(c);
}
});
results
}
fn build_comment(
comment: &serde_json::Value,
data: &serde_json::Value,
replies: Vec<Comment>,
post_link: &str,
post_author: &str,
highlighted_comment: &str,
filters: &HashSet<String>,
req: &Request<Body>,
) -> Comment {
let id = val(&comment, "id");
let body = if (val(&comment, "author") == "[deleted]" && val(&comment, "body") == "[removed]") || val(&comment, "body") == "[ Removed by Reddit ]" {
format!(
"<div class=\"md\"><p>[removed] — <a href=\"https://www.unddit.com{}{}\">view removed comment</a></p></div>",
post_link, id
)
} else {
rewrite_urls(&val(&comment, "body_html"))
};
let kind = comment["kind"].as_str().unwrap_or_default().to_string();
let unix_time = data["created_utc"].as_f64().unwrap_or_default();
let (rel_time, created) = time(unix_time);
let edited = data["edited"].as_f64().map_or((String::new(), String::new()), time);
let score = data["score"].as_i64().unwrap_or(0);
// The JSON API only provides comments up to some threshold.
// Further comments have to be loaded by subsequent requests.
// The "kind" value will be "more" and the "count"
// shows how many more (sub-)comments exist in the respective nesting level.
// Note that in certain (seemingly random) cases, the count is simply wrong.
let more_count = data["count"].as_i64().unwrap_or_default();
let awards: Awards = Awards::parse(&data["all_awardings"]);
let parent_kind_and_id = val(&comment, "parent_id");
let parent_info = parent_kind_and_id.split('_').collect::<Vec<&str>>();
let highlighted = id == highlighted_comment;
let author = Author {
name: val(&comment, "author"),
flair: Flair {
flair_parts: FlairPart::parse(
data["author_flair_type"].as_str().unwrap_or_default(),
data["author_flair_richtext"].as_array(),
data["author_flair_text"].as_str(),
),
text: val(&comment, "link_flair_text"),
background_color: val(&comment, "author_flair_background_color"),
foreground_color: val(&comment, "author_flair_text_color"),
},
distinguished: val(&comment, "distinguished"),
};
let is_filtered = filters.contains(&["u_", author.name.as_str()].concat());
// Many subreddits have a default comment posted about the sub's rules etc.
// Many libreddit users do not wish to see this kind of comment by default.
// Reddit does not tell us which users are "bots", so a good heuristic is to
// collapse stickied moderator comments.
let is_moderator_comment = data["distinguished"].as_str().unwrap_or_default() == "moderator";
let is_stickied = data["stickied"].as_bool().unwrap_or_default();
let collapsed = (is_moderator_comment && is_stickied) || is_filtered;
return Comment {
id,
kind,
parent_id: parent_info[1].to_string(),
parent_kind: parent_info[0].to_string(),
post_link: post_link.to_string(),
post_author: post_author.to_string(),
body,
author,
score: if data["score_hidden"].as_bool().unwrap_or_default() {
("\u{2022}".to_string(), "Hidden".to_string())
} else {
format_num(score)
},
rel_time,
created,
edited,
replies,
highlighted,
awards,
collapsed,
is_filtered,
more_count,
prefs: Preferences::new(&req),
};
}

17
static/style.css
View file

@ -629,6 +629,15 @@ button.submit:hover > svg { stroke: var(--accent); }
background: transparent;
}
#commentQueryForms {
display: flex;
justify-content: space-between;
}
#allCommentsLink {
color: var(--green);
}
#sort, #search_sort {
display: flex;
align-items: center;
@ -1550,6 +1559,7 @@ td, th {
#user, #sidebar { margin: 20px 0; }
#logo, #links { margin-bottom: 5px; }
#searchbox { width: calc(100vw - 35px); }
}
@media screen and (max-width: 480px) {
@ -1623,4 +1633,9 @@ td, th {
.popup-inner {
max-width: 80%;
}
}
#commentQueryForms {
display: initial;
justify-content: initial;
}
}

2
templates/comment.html
View file

@ -35,7 +35,7 @@
<div class="comment_body {% if highlighted %}highlighted{% endif %}">{{ body|safe }}</div>
{% endif %}
<blockquote class="replies">{% for c in replies -%}{{ c.render().unwrap()|safe }}{%- endfor %}
</blockquote>
</bockquote>
</details>
</div>
{% endif %}

32
templates/post.html
View file

@ -43,18 +43,32 @@
{% call utils::post(post) %}
<!-- SORT FORM -->
<div id="commentQueryForms">
<form id="sort">
<p id="comment_count">{{post.comments.0}} {% if post.comments.0 == "1" %}comment{% else %}comments{% endif %} <span id="sorted_by">sorted by </span></p>
<select name="sort" title="Sort comments by">
<select name="sort" title="Sort comments by" id="commentSortSelect">
{% call utils::options(sort, ["confidence", "top", "new", "controversial", "old"], "confidence") %}
</select><button id="sort_submit" class="submit">
<svg width="15" viewBox="0 0 110 100" fill="none" stroke-width="10" stroke-linecap="round">
<path d="M20 50 H100" />
<path d="M75 15 L100 50 L75 85" />
&rarr;
</svg>
</button>
</form>
</select>
<button id="sort_submit" class="submit">
<svg width="15" viewBox="0 0 110 100" fill="none" stroke-width="10" stroke-linecap="round">
<path d="M20 50 H100" />
<path d="M75 15 L100 50 L75 85" />
&rarr;
</svg>
</button>
</form>
<!-- SEARCH FORM -->
<form id="sort">
<input id="search" type="search" name="q" value="{{ comment_query }}" placeholder="Search comments">
<input type="hidden" name="type" value="comment">
</form>
</div>
<div>
{% if comment_query != "" %}
Comments containing "{{ comment_query }}"&nbsp;|&nbsp;<a id="allCommentsLink" href="{{ url_without_query }}">All comments</a>
{% endif %}
</div>
<!-- COMMENTS -->
{% for c in comments -%}

2
templates/search.html
View file

@ -29,7 +29,7 @@
&rarr;
</svg>
</button>
</form>
</form>
{% if !is_filtered %}
{% if subreddits.len() > 0 || params.typed == "sr_user" %}