Function handleLine

src/ipc/downloads.js:314–482

(line)

        activeProcs.set(id, proc);

        const handleLine = (line) => {
          const trimmed = line.trim();
          if (!trimmed) return;
          const idx = downloads.findIndex((d) => d.id === id);
          if (idx === -1) return;

          const update = {};

          // (frag N/total), source of truth for HLS progress
          const fragMatch = trimmed.match(/\(frag\s+(\d+)\/(\d+)\)/);
          if (fragMatch) {
            const currentFrag = parseInt(fragMatch[1]);
            const total = parseInt(fragMatch[2]);
            update.completedFragments = currentFrag;
            update.totalFragments = total;
            update.progress = Math.min(
              99,
              Math.round((currentFrag / total) * 100),
            );
            update.lastMessage = `Fragment ${currentFrag} / ${total}`;
          }

          // [download] X% of Y (direct mp4, no fragments)
          if (!fragMatch && !downloads[idx].totalFragments) {
            const dlPctMatch = trimmed.match(
              /^\[download\]\s+([\d.]+)%\s+of\s+~?\s*([\d.]+\s*(?:[KMGT]i?B|B))/i,
            );
            if (dlPctMatch) {
              const pct = parseFloat(dlPctMatch[1]);
              update.progress = Math.min(99, Math.round(pct));
              update.size = dlPctMatch[2].trim();
              const spMatch = trimmed.match(
                /\bat\s+([\d.]+\s*(?:[KMGT]i?B|B)\/s)/i,
              );
              if (spMatch) update.speed = spMatch[1].trim();
              update.lastMessage = `${Math.round(pct)}% of ${update.size}`;
            }
          }

          // ffmpeg Duration line
          const durationMatch = trimmed.match(
            /Duration:\s*(\d+):(\d+):([\d.]+)/,
          );
          if (durationMatch) {
            const totalSecs =
              parseInt(durationMatch[1]) * 3600 +
              parseInt(durationMatch[2]) * 60 +
              parseFloat(durationMatch[3]);
            if (totalSecs > 0) downloads[idx]._ffmpegTotalSecs = totalSecs;
            return;
          }

          // ffmpeg progress: size=… time=…
          const ffmpegMatch = trimmed.match(
            /size=\s*([\d.]+\s*\w+)\s+time=(\d+):(\d+):([\d.]+)/i,
          );
          if (ffmpegMatch) {
            const elapsedSecs =