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use std::fs::File;
use std::io::BufReader;
use std::io::Write;
use std::path::PathBuf;
use anyhow::Context;
use anyhow::Result;
use async_trait::async_trait;
use log::info;
use ntfy::Auth;
use ntfy::Dispatcher;
use ntfy::Payload;
use ntfy::Priority;
use ntfy::Url;
use rand::distributions::Alphanumeric;
use rand::thread_rng;
use rand::Rng;
use serde::Deserialize;
use serde::Serialize;
use serde_json::from_reader;
use serde_json::to_string;
use super::Action;
use crate::message::MessageConfig;
use crate::message::MessageFormat;
use crate::message::MessageParams;
#[derive(Debug, Clone, Deserialize, Serialize)]
struct NtfyData {
topic: String,
}
fn get_random_topic() -> String {
thread_rng()
.sample_iter(&Alphanumeric)
.take(16)
.map(char::from)
.collect()
}
impl Default for NtfyData {
fn default() -> Self {
NtfyData {
topic: get_random_topic(),
}
}
}
fn get_ntfy_data_filepath() -> PathBuf {
dirs::cache_dir()
.unwrap_or(PathBuf::from("cache"))
.join(env!("CARGO_PKG_NAME"))
.join("ntfy.json")
}
fn get_ntfy_topic() -> Result<String> {
let path = get_ntfy_data_filepath();
Ok(match File::open(&path) {
Ok(file) => {
let reader = BufReader::new(file);
from_reader(reader)
.with_context(|| format!("cannot read ntfy data from '{}'", path.display()))
}
Err(_) => {
let ntfy_data = NtfyData::default();
let mut file = File::create(&path)?;
file.write_all(to_string(&ntfy_data)?.as_bytes())
.with_context(|| format!("could not write ntfy data to '{}'", path.display()))?;
Ok(ntfy_data)
}
}?
.topic)
}
#[derive(Deserialize, Debug)]
#[serde(remote = "Priority")]
#[serde(rename_all = "snake_case")]
pub enum NtfyPriority {
Max = 5,
High = 4,
Default = 3,
Low = 2,
Min = 1,
}
#[derive(Deserialize, Debug)]
pub struct NtfyCredentials {
username: String,
password: String,
}
#[derive(Deserialize, Debug)]
pub struct NtfyConfig {
url: Option<String>,
proxy: Option<String>,
topic: Option<String>,
pub credentials: Option<NtfyCredentials>,
#[serde(with = "NtfyPriority")]
#[serde(default)]
pub priority: Priority,
pub tags: Option<Vec<String>>,
pub attach: Option<Url>,
pub filename: Option<String>,
pub delay: Option<String>,
pub email: Option<String>,
}
impl NtfyConfig {
pub fn url(&self) -> &str {
self.url.as_deref().unwrap_or("https://ntfy.sh")
}
pub fn topic(&self) -> Option<&str> {
self.topic.as_deref()
}
}
pub struct NtfyAction<'a> {
message_config: &'a MessageConfig,
dispatcher: Dispatcher,
payload_template: Payload,
}
impl<'a> NtfyAction<'a> {
pub fn new(message_config: &'a MessageConfig, ntfy_config: &'a NtfyConfig) -> Result<Self> {
let mut dispatcher_builder = Dispatcher::builder(ntfy_config.url());
if let Some(cred) = &ntfy_config.credentials {
dispatcher_builder =
dispatcher_builder.credentials(Auth::new(&cred.username, &cred.password));
}
if let Some(proxy) = &ntfy_config.proxy {
dispatcher_builder = dispatcher_builder.proxy(proxy);
}
let topic = ntfy_config
.topic()
.unwrap_or(&get_ntfy_topic()?)
.to_string();
info!(
"[ntfy] using topic '{}', connect to {}/{}",
topic,
ntfy_config.url(),
topic
);
let mut payload = Payload::new(&topic)
.markdown(match message_config.format() {
MessageFormat::Plain => false,
MessageFormat::Markdown => true,
MessageFormat::Html => true,
})
.priority(ntfy_config.priority.clone())
.tags(
ntfy_config
.tags
.as_deref()
.unwrap_or(&["rotating_light".to_string()]),
);
if let Some(attach) = &ntfy_config.attach {
payload = payload.attach(attach.clone());
}
if let Some(filename) = &ntfy_config.filename {
payload = payload.filename(filename.clone());
}
if let Some(delay) = &ntfy_config.delay {
payload = payload.delay(delay.parse()?);
}
if let Some(email) = &ntfy_config.email {
payload = payload.email(email.clone());
}
Ok(Self {
message_config,
dispatcher: dispatcher_builder.build()?,
payload_template: payload,
})
}
}
#[async_trait]
impl Action<'_> for NtfyAction<'_> {
fn name(&self) -> &'static str {
"ntfy"
}
async fn run(&self, params: Option<&MessageParams<'_, '_>>) -> Result<()> {
let payload = self
.payload_template
.clone()
.title(self.message_config.subject(params)?)
.message(self.message_config.body(params)?)
.click(self.message_config.get_tx_url(params)?.parse()?);
self.dispatcher.send(&payload).await?;
Ok(())
}
}
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