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use anyhow::anyhow;
use std::fmt::Write;
pub fn webvtt_from_ass_blocks(
title: String,
_codec_private: Vec<u8>,
blocks: Vec<(u64, u64, Vec<u8>)>,
) -> anyhow::Result<String> {
let mut out = String::new();
writeln!(out, "WEBVTT - {title}")?; // TODO ensure title does not contain "-->"
writeln!(out)?;
for (pts, dur, block) in blocks {
let block = String::from_utf8(block)?;
let text = convert_block(&block).ok_or(anyhow!("bad ass xD"))?;
writeln!(out, "{} --> {}", format_time(pts), format_time(pts + dur))?;
writeln!(out, "- {text}")?;
writeln!(out)?;
}
Ok(out)
}
fn format_time(t: u64) -> String {
let t = t as f64 / 1_000_000.;
// let mmm = (t.fract() * 1000.).floor();
// let mmm = ((t * 60.).fract() * 60.).floor();
// let mmm = ((t / 60).fract() * 60.).floor();
// format!("{hh:4}:{mm:02}:{ss:02}.{mmm:03}")
format!("{t}")
}
fn convert_block(s: &str) -> Option<&str> {
// ReadOrder, Layer, Style, Name, MarginL, MarginR, MarginV, Effect, Text
let (_read_order, s) = s.split_once(',')?;
let (_layer, s) = s.split_once(',')?;
let (_style, s) = s.split_once(',')?;
let (_name, s) = s.split_once(',')?;
let (_marginl, s) = s.split_once(',')?;
let (_marginr, s) = s.split_once(',')?;
let (_marginv, s) = s.split_once(',')?;
let (_effect, text) = s.split_once(',')?;
Some(text)
}
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