omarchy/install/helpers/logging.sh

# Log output UI for .automated_script.sh
# Tails /var/log/omarchy-install.log and displays it with pretty formatting
start_log_output() {
  local ANSI_SAVE_CURSOR="\033[s"
  local ANSI_RESTORE_CURSOR="\033[u"
  local ANSI_CLEAR_LINE="\033[2K"
  local ANSI_HIDE_CURSOR="\033[?25l"
  local ANSI_RESET="\033[0m"
  local ANSI_GRAY="\033[90m"
  
  local log_file="${1:-/var/log/omarchy-install.log}"

  # Save cursor position and hide cursor
  printf $ANSI_SAVE_CURSOR
  printf $ANSI_HIDE_CURSOR

  (
    local log_lines=20
    local max_line_width=$((LOGO_WIDTH - 4))

    while true; do
      # Read the last N lines into an array
      mapfile -t current_lines < <(tail -n $log_lines "$log_file" 2>/dev/null)

      # Build complete output buffer with escape sequences
      output=""
      for ((i = 0; i < log_lines; i++)); do
        line="${current_lines[i]:-}"

        # Truncate if needed
        if [ ${#line} -gt $max_line_width ]; then
          line="${line:0:$max_line_width}..."
        fi

        # Add clear line escape and formatted output for each line
        if [ -n "$line" ]; then
          output+="${ANSI_CLEAR_LINE}${ANSI_GRAY}${PADDING_LEFT_SPACES}  → ${line}${ANSI_RESET}\n"
        else
          output+="${ANSI_CLEAR_LINE}${PADDING_LEFT_SPACES}\n"
        fi
      done

      printf "${ANSI_RESTORE_CURSOR}%b" "$output"

      sleep 0.1
    done
  ) &
  monitor_pid=$!
}

stop_log_output() {
  if [ -n "${monitor_pid:-}" ]; then
    kill $monitor_pid 2>/dev/null || true
    wait $monitor_pid 2>/dev/null || true
    unset monitor_pid
  fi
}