redsunlib/src/subreddit.rs
2020-11-16 18:49:08 -08:00

122 lines
3.6 KiB
Rust

// CRATES
use actix_web::{get, web, HttpResponse, Result};
use askama::Template;
use chrono::{TimeZone, Utc};
// STRUCTS
#[derive(Template)]
#[template(path = "subreddit.html", escape = "none")]
struct SubredditTemplate {
sub: Subreddit,
posts: Vec<Post>,
sort: String,
}
// Post flair with text, background color and foreground color
pub struct Flair(pub String, pub String, pub String);
pub struct Post {
pub title: String,
pub community: String,
pub author: String,
pub score: String,
pub image: String,
pub url: String,
pub time: String,
pub flair: Flair,
}
pub struct Subreddit {
pub name: String,
pub title: String,
pub description: String,
pub icon: String,
}
async fn render(sub_name: String, sort: String) -> Result<HttpResponse> {
let mut sub: Subreddit = subreddit(&sub_name).await;
let posts: Vec<Post> = posts(sub_name, &sort).await;
sub.icon = if sub.icon != "" {
format!(r#"<img class="subreddit_icon" src="{}">"#, sub.icon)
} else {
String::new()
};
let s = SubredditTemplate { sub: sub, posts: posts, sort: sort }.render().unwrap();
Ok(HttpResponse::Ok().content_type("text/html").body(s))
}
// SERVICES
#[allow(dead_code)]
#[get("/r/{sub}")]
async fn page(web::Path(sub): web::Path<String>) -> Result<HttpResponse> {
render(sub, String::from("hot")).await
}
#[allow(dead_code)]
#[get("/r/{sub}/{sort}")]
async fn sorted(web::Path((sub, sort)): web::Path<(String, String)>) -> Result<HttpResponse> {
render(sub, sort).await
}
// UTILITIES
async fn val(j: &serde_json::Value, k: &str) -> String {
String::from(j["data"][k].as_str().unwrap_or(""))
}
// SUBREDDIT
async fn subreddit(sub: &String) -> Subreddit {
let url: String = format!("https://www.reddit.com/r/{}/about.json", sub);
let resp: String = reqwest::get(&url).await.unwrap().text().await.unwrap();
let data: serde_json::Value = serde_json::from_str(resp.as_str()).expect("Failed to parse JSON");
let icon: String = String::from(data["data"]["community_icon"].as_str().unwrap()); //val(&data, "community_icon");
let icon_split: std::str::Split<&str> = icon.split("?");
let icon_parts: Vec<&str> = icon_split.collect();
Subreddit {
name: val(&data, "display_name").await,
title: val(&data, "title").await,
description: val(&data, "public_description").await,
icon: String::from(icon_parts[0]),
}
}
// POSTS
pub async fn posts(sub: String, sort: &String) -> Vec<Post> {
let url: String = format!("https://www.reddit.com/r/{}/{}.json", sub, sort);
let resp: String = reqwest::get(&url).await.unwrap().text().await.unwrap();
let popular: serde_json::Value = serde_json::from_str(resp.as_str()).expect("Failed to parse JSON");
let post_list = popular["data"]["children"].as_array().unwrap();
let mut posts: Vec<Post> = Vec::new();
for post in post_list.iter() {
let img = if val(post, "thumbnail").await.starts_with("https:/") {
val(post, "thumbnail").await
} else {
String::new()
};
let unix_time: i64 = post["data"]["created_utc"].as_f64().unwrap().round() as i64;
let score = post["data"]["score"].as_i64().unwrap();
posts.push(Post {
title: val(post, "title").await,
community: val(post, "subreddit").await,
author: val(post, "author").await,
score: if score > 1000 { format!("{}k", score / 1000) } else { score.to_string() },
image: img,
url: val(post, "permalink").await,
time: Utc.timestamp(unix_time, 0).format("%b %e '%y").to_string(),
flair: Flair(
val(post, "link_flair_text").await,
val(post, "link_flair_background_color").await,
if val(post, "link_flair_text_color").await == "dark" { "black".to_string() } else { "white".to_string() }
),
});
}
posts
}