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|
use super::actions::*;
use super::utils::*;
use crate::errors::*;
use core::ops::Deref;
use std::collections::HashSet;
use std::fs::{self, File};
use std::io::{self, BufReader, BufWriter, Write};
use chrono::prelude::*;
use regex::Regex;
use rss::{Channel, Item};
use serde_json;
use std::path::PathBuf;
#[cfg(target_os = "macos")]
const ESCAPE_REGEX: &str = r"/";
#[cfg(target_os = "linux")]
const ESCAPE_REGEX: &str = r"/";
#[cfg(target_os = "windows")]
const ESCAPE_REGEX: &str = r#"[\\/:*?"<>|]"#;
lazy_static! {
static ref FILENAME_ESCAPE: Regex = Regex::new(ESCAPE_REGEX).unwrap();
}
fn create_new_config_file(path: &PathBuf) -> Result<Config> {
writeln!(
io::stdout().lock(),
"Creating new config file at {:?}",
&path
)
.ok();
let download_limit = 1;
let file = File::create(&path)?;
let config = Config {
auto_download_limit: download_limit,
};
serde_yaml::to_writer(file, &config)?;
Ok(config)
}
#[derive(Copy, Clone, Debug, PartialEq, Serialize, Deserialize)]
pub struct Config {
pub auto_download_limit: i64,
}
impl Config {
pub fn new() -> Result<Config> {
let mut path = get_podcast_dir()?;
path.push(".config.yaml");
let config = if path.exists() {
let file = File::open(&path)?;
match serde_yaml::from_reader(file) {
Ok(config) => config,
Err(err) => {
let mut new_path = path.clone();
new_path.set_extension("yaml.bk");
let stderr = io::stderr();
let mut handle = stderr.lock();
writeln!(
&mut handle,
"{}\nFailed to open config file, moving to {:?}",
err, &new_path
)
.ok();
fs::rename(&path, new_path)?;
create_new_config_file(&path)?
}
}
} else {
create_new_config_file(&path)?
};
Ok(config)
}
}
#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
pub struct Subscription {
pub title: String,
pub url: String,
pub num_episodes: usize,
}
impl Subscription {
pub fn title(&self) -> &str {
&self.title
}
}
#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
pub struct State {
pub version: String,
pub last_run_time: DateTime<Utc>,
pub subscriptions: Vec<Subscription>,
}
impl State {
pub fn new(version: &str) -> Result<State> {
let path = get_sub_file()?;
if path.exists() {
let file = File::open(&path)?;
let mut state: State = serde_json::from_reader(BufReader::new(&file))?;
state.version = String::from(version);
// Check if a day has passed (86400 seconds) since last launch
if 86400
< Utc::now()
.signed_duration_since(state.last_run_time)
.num_seconds()
{
update_rss(&mut state);
check_for_update(&state.version)?;
}
state.last_run_time = Utc::now();
state.save()?;
Ok(state)
} else {
writeln!(io::stdout().lock(), "Creating new file: {:?}", &path).ok();
Ok(State {
version: String::from(version),
last_run_time: Utc::now(),
subscriptions: Vec::new(),
})
}
}
pub fn subscriptions(&self) -> &[Subscription] {
&self.subscriptions
}
pub fn subscriptions_mut(&mut self) -> &mut [Subscription] {
&mut self.subscriptions
}
pub fn subscribe(&mut self, url: &str) -> Result<()> {
let mut set = HashSet::new();
for sub in self.subscriptions() {
set.insert(sub.title.clone());
}
let podcast = Podcast::from(Channel::from_url(url)?);
if !set.contains(podcast.title()) {
self.subscriptions.push(Subscription {
title: String::from(podcast.title()),
url: String::from(url),
num_episodes: podcast.episodes().len(),
});
}
self.save()
}
pub fn save(&self) -> Result<()> {
let mut path = get_sub_file()?;
path.set_extension("json.tmp");
let file = File::create(&path)?;
serde_json::to_writer(BufWriter::new(file), self)?;
fs::rename(&path, get_sub_file()?)?;
Ok(())
}
}
#[derive(Clone, Debug, PartialEq)]
pub struct Podcast(Channel);
impl From<Channel> for Podcast {
fn from(channel: Channel) -> Podcast {
Podcast(channel)
}
}
impl Deref for Podcast {
type Target = Channel;
fn deref(&self) -> &Channel {
&self.0
}
}
impl Podcast {
pub fn title(&self) -> &str {
self.0.title()
}
#[allow(dead_code)]
pub fn url(&self) -> &str {
self.0.link()
}
#[allow(dead_code)]
pub fn from_url(url: &str) -> Result<Podcast> {
Ok(Podcast::from(Channel::from_url(url)?))
}
pub fn from_title(title: &str) -> Result<Podcast> {
let mut path = get_xml_dir()?;
let mut filename = String::from(title);
filename.push_str(".xml");
path.push(filename);
let file = File::open(&path)?;
Ok(Podcast::from(Channel::read_from(BufReader::new(file))?))
}
pub fn episodes(&self) -> Vec<Episode> {
let mut result = Vec::new();
for item in self.0.items().to_owned() {
result.push(Episode::from(item));
}
result
}
}
#[derive(Clone, Debug, PartialEq)]
pub struct Episode(Item);
impl From<Item> for Episode {
fn from(item: Item) -> Episode {
Episode(item)
}
}
impl Episode {
pub fn title(&self) -> Option<String> {
Some(
FILENAME_ESCAPE
.replace_all(self.0.title()?, "_")
.to_string(),
)
}
pub fn url(&self) -> Option<&str> {
match self.0.enclosure() {
Some(val) => Some(val.url()),
None => None,
}
}
pub fn extension(&self) -> Option<String> {
match self.0.enclosure()?.mime_type() {
"audio/mpeg" => Some("mp3".into()),
"audio/mp4" => Some("m4a".into()),
"audio/aac" => Some("m4a".into()),
"audio/ogg" => Some("ogg".into()),
"audio/vorbis" => Some("ogg".into()),
"audio/opus" => Some("opus".into()),
_ => find_extension(self.url().unwrap()),
}
}
}
|
