libreddit/src/subreddit.rs

110 lines
3.2 KiB
Rust

// CRATES
use crate::utils::{fetch_posts, format_num, format_url, request, val, ErrorTemplate, Params, Post, Subreddit};
use actix_web::{http::StatusCode, web, HttpResponse, Result};
use askama::Template;
use std::convert::TryInto;
// STRUCTS
#[derive(Template)]
#[template(path = "subreddit.html", escape = "none")]
struct SubredditTemplate {
sub: Subreddit,
posts: Vec<Post>,
sort: String,
ends: (String, String),
}
// SERVICES
#[allow(dead_code)]
pub async fn page(web::Path(sub): web::Path<String>, params: web::Query<Params>) -> Result<HttpResponse> {
render(sub, params.sort.clone(), (params.before.clone(), params.after.clone())).await
}
pub async fn render(sub_name: String, sort: Option<String>, ends: (Option<String>, Option<String>)) -> Result<HttpResponse> {
let sorting = sort.unwrap_or("hot".to_string());
let before = ends.1.clone().unwrap_or(String::new()); // If there is an after, there must be a before
// Build the Reddit JSON API url
let url = match ends.0 {
Some(val) => format!("r/{}/{}.json?before={}&count=25", sub_name, sorting, val),
None => match ends.1 {
Some(val) => format!("r/{}/{}.json?after={}&count=25", sub_name, sorting, val),
None => format!("r/{}/{}.json", sub_name, sorting),
},
};
let sub_result = if !&sub_name.contains("+") {
subreddit(&sub_name).await
} else {
Ok(Subreddit {
name: String::new(),
title: String::new(),
description: String::new(),
icon: String::new(),
members: String::new(),
active: String::new(),
})
};
let items_result = fetch_posts(url, String::new()).await;
if sub_result.is_err() || items_result.is_err() {
let s = ErrorTemplate {
message: sub_result.err().unwrap().to_string(),
}
.render()
.unwrap();
Ok(HttpResponse::Ok().status(StatusCode::NOT_FOUND).content_type("text/html").body(s))
} else {
let sub = sub_result.unwrap();
let items = items_result.unwrap();
let s = SubredditTemplate {
sub: sub,
posts: items.0,
sort: sorting,
ends: (before, items.1),
}
.render()
.unwrap();
Ok(HttpResponse::Ok().content_type("text/html").body(s))
}
}
// SUBREDDIT
async fn subreddit(sub: &String) -> Result<Subreddit, &'static str> {
// Build the Reddit JSON API url
let url: String = format!("r/{}/about.json", sub);
// Send a request to the url, receive JSON in response
let req = request(url).await;
// If the Reddit API returns an error, exit this function
if req.is_err() {
return Err(req.err().unwrap());
}
// Otherwise, grab the JSON output from the request
let res = req.unwrap();
let members = res["data"]["subscribers"].as_u64().unwrap_or(0);
let active = res["data"]["accounts_active"].as_u64().unwrap_or(0);
let community_icon: &str = res["data"]["community_icon"].as_str().unwrap().split("?").collect::<Vec<&str>>()[0];
let icon = if community_icon.is_empty() {
val(&res, "icon_img").await
} else {
community_icon.to_string()
};
let sub = Subreddit {
name: val(&res, "display_name").await,
title: val(&res, "title").await,
description: val(&res, "public_description").await,
icon: format_url(icon).await,
members: format_num(members.try_into().unwrap()),
active: format_num(active.try_into().unwrap()),
};
Ok(sub)
}