Class: AstroSubframeOrganizer::FilenameParsers::FitsFilenameParser

Inherits:
AstroSubframeOrganizer::FilenameParser show all
Includes:
Logging
Defined in:
lib/astro_subframe_organizer/filename_parsers/fits_filename_parser.rb

Overview

Parser for FITS format files from ASIAir Plus.

Expected filename format:

Type_[Target]_[Mosaic]_Exposure_BinBinning_Camera_ISO/Gain_DateTime_CCDTemp_ImageIndex

Example:

Light_M42_1.0s_Bin1_T7_ISO100_20220508-120000_-10.0C_0001.fit
Dark_30.0s_Bin1_T7_ISO100_20220508-120000_-10.0C_0001.fit

Returns a hash with keys:

- :type (Light, Dark, Flat, Bias)
- :target (for Light files only)
- :mosaic_pane (optional, if present)
- :exposure (with units, e.g., "1.0s")
- :bin (numeric string)
- :camera (model name)
- :iso (numeric string, if present)
- :gain (numeric string, if ISO not present)
- :created_at (DateTime object)
- :ccd_temp (with units, e.g., "-10.0C")
- :image_index (numeric string)
- :file_format (:fits)
- :path (full file path)
- :filename (just the filename)

Instance Attribute Summary

Attributes inherited from AstroSubframeOrganizer::FilenameParser

#filename, #path, #result

Instance Method Summary collapse

Methods included from Logging

#logger

Methods inherited from AstroSubframeOrganizer::FilenameParser

for_file, #initialize

Constructor Details

This class inherits a constructor from AstroSubframeOrganizer::FilenameParser

Instance Method Details

#parse ⇒ Hash

Returns Parsed metadata from FITS filename.

Returns:

  • (Hash) —

    Parsed metadata from FITS filename



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# File 'lib/astro_subframe_organizer/filename_parsers/fits_filename_parser.rb', line 33

def parse # rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity
  base_name = extract_base_name
  parts = parse_parts(base_name)
  result = {}

  begin
    result[:file_format] = :fits
    result[:path] = @path
    result[:filename] = @filename

    # If the file is already organized somewhere, get the information from its path.
    result.merge!(extract_metadata_from_path)

    result[:type] = parts.shift
    result[:target] = parts.shift if result[:type] == 'Light'
    result[:mosaic_pane] = parts.shift if parts.first&.match?(/\A\d+-\d+\z/)
    result[:exposure] = parts.shift
    result[:bin] = parts.shift.gsub('Bin', '') if parts.first&.start_with?('Bin')
    result[:camera] = parts.shift if Equipment::Camera.all.include?(parts.first)
    result[:iso] = parts.shift.gsub('ISO', '') if parts.first&.start_with?('ISO')
    result[:gain] = parts.shift.gsub('gain', '') if parts.first&.start_with?('gain')
    result[:created_at] = DateTime.strptime(parts.shift, FILENAME_DT_FORMAT)
    result[:ccd_temp] = parts.shift
    result[:image_index] = parts.shift
  rescue StandardError => e
    logger.error e
  ensure
    logger.debug result
  end

  FileMetadata.from_parsed_data(result)
end