// THQA Subtitle format (.sub)
// Text-based subtitle file with timing information
// Format: <start_seconds> <duration_seconds> <text>\r\n

type thqa_sub ui("Subtitle File", root)
{
  criteria {
    require _ext == "sub";
    // First character should be a digit (start of timestamp)
    first_byte = u8at(0);
    require first_byte >= 0x30 && first_byte <= 0x39;
  }

  // Read entire file as UTF-8 text (handles special characters properly)
  fileset_text(utf8(read(size())));

  // Split into lines
  lines = split_lines(file_text);
  line_count = len(lines);

  // Parse each line
  skip_tree("subtitles");
  line_idx = 0;
  repeat(line_count) {
    lineset_text(list_at(lines, line_idx));

    // Split line by spaces: "start duration text..."
    // First space separates start time
    space1 = find(line_text, " ");
    if (space1 > 0) {
      start_str = substr(line_text, 0, space1);
      rest1 = substr(line_text, space1 + 1, len(line_text) - space1 - 1);

      // Second space separates duration from text
      space2 = find(rest1, " ");
      if (space2 > 0) {
        duration_str = substr(rest1, 0, space2);
        subset_text(substr(rest1, space2 + 1, len(rest1) - space2 - 1));

        ctx_set("_thqa_sub_start", start_str);
        ctx_set("_thqa_sub_duration", duration_str);
        ctx_set("_thqa_sub_text", sub_text);
        ctx_set("_thqa_sub_idx", line_idx);

        dummy = bytesat(0, 1);
        row_child = dummy |> parse thqa_sub_row;
        push("subtitles", row_child);
      }
    }

    line_idx = line_idx + 1;
  }

  // Table display attribute
  ui_table("subtitles", "subtitles", "Index,Start,Duration,Text");

  subtitle_count = len(lines) ui("Subtitle Count");
  file_size = size() ui("File Size");
}

// Row type for subtitle table
type thqa_sub_row ui("Subtitle")
{
  set_hidden();
  Index = ctx_get("_thqa_sub_idx");
  Start = ctx_get("_thqa_sub_start");
  Duration = ctx_get("_thqa_sub_duration");
  Text = ctx_get("_thqa_sub_text");
}