redsunlib/src/subreddit.rs
2021-01-01 15:28:13 -08:00

80 lines
2.4 KiB
Rust

// CRATES
use crate::utils::{error, fetch_posts, format_num, format_url, param, request, val, Post, Subreddit};
use actix_web::{HttpRequest, HttpResponse, Result};
use askama::Template;
// STRUCTS
#[derive(Template)]
#[template(path = "subreddit.html", escape = "none")]
struct SubredditTemplate {
sub: Subreddit,
posts: Vec<Post>,
sort: (String, String),
ends: (String, String),
}
// SERVICES
// web::Path(sub): web::Path<String>, params: web::Query<Params>
pub async fn page(req: HttpRequest) -> Result<HttpResponse> {
let path = format!("{}.json?{}", req.path(), req.query_string());
let sub = req.match_info().get("sub").unwrap_or("popular").to_string();
let sort = req.match_info().get("sort").unwrap_or("hot").to_string();
let sub_result = if !&sub.contains('+') && sub != "popular" {
subreddit(&sub).await.unwrap_or_default()
} else {
Subreddit::default()
};
match fetch_posts(&path, String::new()).await {
Ok(items) => {
let s = SubredditTemplate {
sub: sub_result,
posts: items.0,
sort: (sort, param(&path, "t")),
ends: (param(&path, "after"), items.1),
}
.render()
.unwrap();
Ok(HttpResponse::Ok().content_type("text/html").body(s))
},
Err(msg) => error(msg.to_string()).await
}
}
// SUBREDDIT
async fn subreddit(sub: &str) -> Result<Subreddit, &'static str> {
// Build the Reddit JSON API url
let path: String = format!("r/{}/about.json?raw_json=1", sub);
let res;
// Send a request to the url
match request(&path).await {
// If success, receive JSON in response
Ok(response) => { res = response; },
// If the Reddit API returns an error, exit this function
Err(msg) => return Err(msg)
}
// Metadata regarding the subreddit
let members: i64 = res["data"]["subscribers"].as_u64().unwrap_or_default() as i64;
let active: i64 = res["data"]["accounts_active"].as_u64().unwrap_or_default() as i64;
// Fetch subreddit icon either from the community_icon or icon_img value
let community_icon: &str = res["data"]["community_icon"].as_str().unwrap_or("").split('?').collect::<Vec<&str>>()[0];
let icon = if community_icon.is_empty() { val(&res, "icon_img") } else { community_icon.to_string() };
let sub = Subreddit {
name: val(&res, "display_name"),
title: val(&res, "title"),
description: val(&res, "public_description"),
info: val(&res, "description_html").replace("\\", ""),
icon: format_url(icon).await,
members: format_num(members),
active: format_num(active),
};
Ok(sub)
}