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use actions::*;
use chrono::prelude::*;
use rayon::prelude::*;
use reqwest;
use rss::{self, Channel, Item};
use serde_json;
use std::collections::BTreeSet;
use std::fs::{self, DirBuilder, File};
use std::io::{self, Read, Write};
use utils::*;
#[derive(Serialize, Deserialize, Clone)]
pub struct Subscription {
title: String,
url: String,
}
impl Subscription {
pub fn title(&self) -> String {
self.title.clone()
}
pub fn url(&self) -> String {
self.url.clone()
}
}
#[derive(Serialize, Deserialize, Clone)]
pub struct State {
last_run_time: DateTime<Utc>,
subs: Vec<Subscription>,
}
impl State {
pub fn new() -> State {
let mut path = get_podcast_dir();
path.push(".subscriptions");
if path.exists() {
let mut s = String::new();
File::open(&path).unwrap().read_to_string(&mut s).unwrap();
let mut state: State = serde_json::from_str(&s).unwrap();
// Check if a day has passed (86400 seconds)
if state
.last_run_time
.signed_duration_since(Utc::now())
.num_seconds() < -86400
{
update_rss(&state.clone());
}
state.last_run_time = Utc::now();
state
} else {
State {
last_run_time: Utc::now(),
subs: Vec::new(),
}
}
}
pub fn subscribe(&mut self, url: &str) {
let mut set = BTreeSet::new();
for sub in self.subscriptions() {
set.insert(sub.title());
}
let channel = Channel::from_url(url).unwrap();
if !set.contains(channel.title()) {
self.subs.push(Subscription {
title: String::from(channel.title()),
url: String::from(url),
});
}
if let Err(err) = self.save() {
eprintln!("{}", err);
}
download_rss(url);
}
pub fn subscriptions(&self) -> Vec<Subscription> {
self.subs.clone()
}
pub fn save(&self) -> Result<(), io::Error> {
let mut path = get_podcast_dir();
DirBuilder::new().recursive(true).create(&path).unwrap();
path.push(".subscriptions.tmp");
let serialized = serde_json::to_string(self)?;
let mut file = File::create(&path)?;
file.write_all(serialized.as_bytes())?;
fs::rename(&path, get_sub_file())?;
Ok(())
}
}
#[derive(Clone)]
pub struct Podcast(Channel);
#[derive(Clone)]
pub struct Episode(Item);
impl From<Channel> for Podcast {
fn from(channel: Channel) -> Podcast {
Podcast(channel)
}
}
impl From<Item> for Episode {
fn from(item: Item) -> Episode {
Episode(item)
}
}
impl Podcast {
pub fn title(&self) -> &str {
self.0.title()
}
#[allow(dead_code)]
pub fn url(&self) -> &str {
self.0.link()
}
pub fn from_url(url: &str) -> Result<Podcast, rss::Error> {
match Channel::from_url(url) {
Ok(val) => Ok(Podcast::from(val)),
Err(err) => Err(err),
}
}
pub fn episodes(&self) -> Vec<Episode> {
let mut result = Vec::new();
let items = self.0.items().to_vec();
for item in items {
result.push(Episode::from(item));
}
result
}
pub fn download(&self) {
let mut path = get_podcast_dir();
path.push(self.title());
let downloaded = already_downloaded(self.title());
self.episodes().par_iter().for_each(
|ref i| if let Some(ep_title) =
i.title()
{
if !downloaded.contains(ep_title) {
if let Err(err) = i.download(self.title()) {
println!("{}", err);
}
}
},
);
}
pub fn download_specific(&self, episode_numbers: Vec<usize>) {
let mut path = get_podcast_dir();
path.push(self.title());
let downloaded = already_downloaded(self.title());
let episodes = self.episodes();
episode_numbers.par_iter().for_each(
|ep_num| if let Some(ep_title) =
episodes[episodes.len() - ep_num].title()
{
if !downloaded.contains(ep_title) {
if let Err(err) = episodes[episodes.len() - ep_num].download(self.title()) {
println!("{}", err);
}
}
},
);
}
}
impl Episode {
pub fn title(&self) -> Option<&str> {
self.0.title()
}
pub fn url(&self) -> Option<&str> {
match self.0.enclosure() {
Some(val) => Some(val.url()),
None => None,
}
}
pub fn extension(&self) -> Option<&str> {
match self.0.enclosure() {
Some(enclosure) => {
match enclosure.mime_type() {
"audio/mpeg" => Some(".mp3"),
"audio/mp4" => Some(".m4a"),
"audio/ogg" => Some(".ogg"),
_ => None,
}
}
None => None,
}
}
pub fn download(&self, podcast_name: &str) -> Result<(), io::Error> {
let mut path = get_podcast_dir();
path.push(podcast_name);
DirBuilder::new().recursive(true).create(&path).unwrap();
if let Some(url) = self.url() {
if let Some(title) = self.title() {
println!("Downloading: {}", title);
let mut filename = String::from(title);
filename.push_str(self.extension().unwrap());
path.push(filename);
let mut file = File::create(&path)?;
let mut resp = reqwest::get(url).unwrap();
let mut content: Vec<u8> = Vec::new();
resp.read_to_end(&mut content)?;
file.write_all(&content)?;
return Ok(());
}
}
Ok(())
}
}
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