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/*
This file is part of jellything (https://codeberg.org/metamuffin/jellything)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2025 metamuffin <metamuffin.org>
*/
use crate::{cues::generate_cues, stream_info, SMediaInfo};
use anyhow::{anyhow, Result};
use jellystream_types::TrackNum;
use std::{
io::{Cursor, Read},
ops::Range,
sync::Arc,
};
pub fn fragment_index(info: Arc<SMediaInfo>, track: TrackNum) -> Result<Vec<Range<f64>>> {
let (iinfo, info) = stream_info(info)?;
let (file_index, _) = *iinfo
.track_to_file
.get(track)
.ok_or(anyhow!("track not found"))?;
let cue_stat = generate_cues(&iinfo.paths[file_index])?;
Ok(cue_stat
.cues
.iter()
.map(|c| c.time as f64 / 1_000_000_000.)
.zip(
cue_stat
.cues
.iter()
.skip(1)
.map(|c| c.time as f64 / 1_000_000_000.)
.chain([info.duration]),
)
.map(|(start, end)| start..end)
.collect())
}
pub fn fragment_index_stream(
info: Arc<SMediaInfo>,
track: TrackNum,
) -> Result<Box<dyn Read + Send + Sync>> {
Ok(Box::new(Cursor::new(serde_json::to_string(
&fragment_index(info, track)?,
)?)))
}
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