YoursFunny/TelegramTwitterMediaBot
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refactor(send): model a payload's media as MediaRef, not media + file_id

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MediaItemPayload carried one String field with two meanings and a file_id
bool beside it to say which, in all three variants; every reader re-checked
the flag (input_file had a three-arm pattern just to find the file-id case).
MediaRef::Source/FileId says it once, and the readers now match on it —
local_media_paths, item_url, input_file and the download path each shrank to
the one branch they care about.

Fixes a real failure that the flag was hiding: send_animation built its
InputFile with input_file_for(media_url), which read a cached file id as a
local path and answered "local media file missing" — permanent. So the
second request for a single-gif post always failed (the third worked, from
the degraded entry). It now uses the payload's own input_file, and
a_cached_animation_sends_by_file_id fails without that line.

Wire shape: a queued row from before this change no longer parses, and the
queue already handles that shape (handle_task dead-letters it as an invalid
payload, and dead_letter_notify still names the post and drops the stale
cache entry).
This commit is contained in:
YoursFunny
2026-09-21 18:44:26 +08:00
parent 70d4f2ec88
commit aa70b45ae6
7 changed files with 164 additions and 110 deletions
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crates/xmedia-bot/src/handlers/urls.rs
+46 -30
View File
@@ -5,7 +5,7 @@ use super::{log_key, reply};
use crate::ctx::AppContext;
use crate::link_cache::{CachedMedia, CachedMediaKind, CachedPost};
use crate::media_sender::MediaSender;
use crate::send::{self, Delivery, MediaItemPayload, Task};
use crate::send::{self, Delivery, MediaItemPayload, MediaRef, Task};
use crate::state::ChatData;
use std::collections::{HashMap, HashSet};
use std::future::Future;
@@ -188,24 +188,21 @@ pub(super) fn media_to_payload(media: &Media, sensitive: bool) -> MediaItemPaylo
// A gif inside a group becomes a video item; a lone gif takes the
// animation path (see url_media).
Media::Illustration { .. } => MediaItemPayload::Photo {
media: media.url().to_string(),
media: MediaRef::Source(media.url().to_string()),
has_spoiler: sensitive,
fallback_url,
file_id: false,
},
Media::Video { .. } => MediaItemPayload::Video {
media: media.url().to_string(),
media: MediaRef::Source(media.url().to_string()),
has_spoiler: sensitive,
thumbnail: thumbnail_for(media),
fallback_url,
file_id: false,
},
Media::Animated { .. } => MediaItemPayload::Video {
media: media.url().to_string(),
media: MediaRef::Source(media.url().to_string()),
has_spoiler: sensitive,
thumbnail: thumbnail_for(media),
fallback_url,
file_id: false,
},
}
}
@@ -293,11 +290,12 @@ async fn dispatch_send(
/// the URL costs Telegram a fetch (or the upload fallback a download) and saves
/// the whole source round trip, including a ugoira encode or an HLS remux.
fn cached_media_payload(media: &CachedMedia, sensitive: bool) -> MediaItemPayload {
let has_file_id = !media.file_id.is_empty();
let source = if has_file_id {
media.file_id.clone()
// The entry's file id when it has one, else its source URL (a permanently
// failed send degrades the entry and clears the id).
let source = if media.file_id.is_empty() {
MediaRef::Source(media.url.clone())
} else {
media.url.clone()
MediaRef::FileId(media.file_id.clone())
};
// A degraded item carries no smaller variant: a fresh fetch's would, but
// the item is what the source itself sent, so an oversize is handled by the
@@ -308,19 +306,16 @@ fn cached_media_payload(media: &CachedMedia, sensitive: bool) -> MediaItemPayloa
media: source,
has_spoiler: sensitive,
fallback_url,
file_id: has_file_id,
},
CachedMediaKind::Video => MediaItemPayload::Video {
media: source,
has_spoiler: sensitive,
thumbnail: None,
fallback_url,
file_id: has_file_id,
},
CachedMediaKind::Animation => MediaItemPayload::Animation {
media: source,
has_spoiler: sensitive,
file_id: has_file_id,
},
}
}
@@ -729,6 +724,34 @@ mod tests {
assert!(entry.media[0].file_id.is_empty());
}
/// A repeat request for a single-gif post re-sends the cached file id
/// instead of failing: the animation path used to hand the id to
/// `input_file_for`, which read it as a local path and answered "local
/// media file missing" (permanent), so the second request of a gif link
/// always failed and only the third — from the degraded entry — worked.
#[tokio::test]
async fn a_cached_animation_sends_by_file_id() {
let stores = TestStores::new();
let sender = MockSender::scripted(vec![Outcome::AnimationOk], permanent_error);
let ctx = stores.ctx(&sender);
let mut entry = cached_photo();
entry.media = vec![CachedMedia {
kind: CachedMediaKind::Animation,
file_id: "AgAC-gif".into(),
url: "https://p/1.gif".into(),
}];
stores.link_cache().put("twitter:1", &entry).await;
url_media(&ctx, 1, 2, "https://x.com/u/status/1", PostSend::FromChat).await;
assert_eq!(sender.calls(), vec!["send_chat_action", "send_animation"]);
assert_eq!(
sender.animation_files(),
vec!["AgAC-gif"],
"a cached gif must go out as its file id, not as an upload"
);
}
/// The two payload shapes a cached item can take, asserted directly: the
/// file id when there is one, the source URL when the entry was degraded.
#[test]
@@ -740,16 +763,14 @@ mod tests {
};
match cached_media_payload(&with_id, true) {
MediaItemPayload::Photo {
media,
media: MediaRef::FileId(media),
has_spoiler,
file_id,
..
} => {
assert_eq!(media, "AgAC");
assert!(file_id, "a cached send must go by file id");
assert_eq!(media, "AgAC", "a cached send must go by file id");
assert!(has_spoiler);
}
_ => panic!("expected a photo payload"),
other => panic!("expected a photo payload by file id, got {other:?}"),
}
let degraded = CachedMedia {
@@ -759,16 +780,14 @@ mod tests {
};
match cached_media_payload(&degraded, false) {
MediaItemPayload::Video {
media,
file_id,
media: MediaRef::Source(media),
fallback_url,
..
} => {
assert_eq!(media, "https://v/1.mp4");
assert!(!file_id, "a degraded send must go by URL");
assert_eq!(media, "https://v/1.mp4", "a degraded send goes by URL");
assert!(fallback_url.is_none());
}
_ => panic!("expected a video payload"),
other => panic!("expected a video payload by URL, got {other:?}"),
}
}
@@ -1101,17 +1120,15 @@ mod tests {
use MediaItemPayload::{Animation, Photo, Video};
let photo = || Photo {
media: "https://p/1.jpg".into(),
media: MediaRef::Source("https://p/1.jpg".into()),
has_spoiler: false,
fallback_url: None,
file_id: false,
};
let video = || Video {
media: "https://v/1.mp4".into(),
media: MediaRef::Source("https://v/1.mp4".into()),
has_spoiler: false,
thumbnail: None,
fallback_url: None,
file_id: false,
};
// Unknown before the fetch: the pipeline starts on "typing".
@@ -1124,9 +1141,8 @@ mod tests {
ActionHint::for_items(&[
video(),
Animation {
media: "https://v/2.mp4".into(),
media: MediaRef::Source("https://v/2.mp4".into()),
has_spoiler: false,
file_id: false,
}
])
.action(),