feat: add watch-later views and Terebi watched-state tracking

src/youtube.rs

@@ -1,12 +1,13 @@
 use std::{
     ffi::OsStr,
     io::{self, Read},
+    path::Path,
     process::{Child, Command, Stdio},
     sync::mpsc::{self, Receiver, TryRecvError},
     thread,
 };
 
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 pub const PAGE_SIZE: usize = 20;
 
@@ -16,7 +17,7 @@ pub struct Page {
     pub cutoff: Option<i64>,
 }
 
-#[derive(Deserialize)]
+#[derive(Clone, Deserialize, Serialize)]
 pub struct Video {
     pub id: String,
     pub title: String,
@@ -67,14 +68,14 @@ fn valid_channel_id(id: &str) -> bool {
             .all(|c| c.is_ascii_alphanumeric() || c == b'-' || c == b'_')
 }
 
-fn valid_video_id(id: &str) -> bool {
+pub(crate) fn valid_video_id(id: &str) -> bool {
     id.len() == 11
         && id
             .bytes()
             .all(|c| c.is_ascii_alphanumeric() || c == b'-' || c == b'_')
 }
 
-fn validate_video(video: &mut Video) -> Result<(), String> {
+pub(crate) fn validate_video(video: &mut Video) -> Result<(), String> {
     if !valid_video_id(&video.id) {
         return Err("an invalid YouTube video ID".into());
     }
@@ -463,19 +464,22 @@ pub struct PlayerLaunch {
 }
 
 impl PlayerLaunch {
-    pub fn start(id: &str, player: &OsStr) -> io::Result<Self> {
+    pub fn start(id: &str, player: &OsStr, progress_file: &Path) -> io::Result<Self> {
         if !valid_video_id(id) {
             return Err(io::Error::new(
                 io::ErrorKind::InvalidInput,
                 "Invalid YouTube video ID",
             ));
         }
+        crate::watch_later::register_identity(progress_file, id)?;
         let mut player = isolated_command(player)
             .args([
                 "--new-instance",
                 "--url",
                 &format!("https://www.youtube.com/watch?v={id}"),
             ])
+            .arg("--progress-file")
+            .arg(progress_file)
             .stdin(Stdio::null())
             .stdout(Stdio::null())
             .stderr(Stdio::piped())
@@ -519,7 +523,7 @@ mod tests {
     fn player_launch_rejects_unsafe_video_ids_before_spawning() {
         for id in ["", "--help", "jNQXAC9IVRw&list=other", "日本語"] {
             assert!(matches!(
-                PlayerLaunch::start(id, OsStr::new("terebi")),
+                PlayerLaunch::start(id, OsStr::new("terebi"), Path::new("progress.jsonl")),
                 Err(error) if error.kind() == io::ErrorKind::InvalidInput
             ));
         }