Class: Enwrite

Inherits:
Object
  • Object
show all
Defined in:
lib/enwrite.rb

Defined Under Namespace

Modules: Version

Constant Summary collapse

PLUGINS = 
%w[hugo]

Class Method Summary collapse

Class Method Details

.run ⇒ Object 



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# File 'lib/enwrite.rb', line 30

def self.run

  options = OpenStruct.new
  options.removetags = []
  options.verbose = false
  options.debug = false
  options.outputplugin = 'hugo'
  options.configtag = '_enwrite_config'
  options.filestagprefix = '_enwrite_files'

  opts = OptionParser.new do |opts|
    def opts.version_string
      "Enwrite v#{Enwrite::Version::STRING}"
    end
    
    opts.banner = "#{opts.version_string}\n\nUsage: #{$0} [options] (at least one of -n or -s has to be specified)"

    def opts.show_usage
      puts self
      exit
    end

    def opts.show_version
      puts version_string
      exit
    end

    opts.separator "\nSearch options:"
    opts.on("-n", "--notebook NOTEBOOK",
            "Process notes from specified notebook.") do |notebook|
      options.notebook = notebook
    end
    opts.on("-t", "--tag TAG",
            "Process only notes that have this tag",
            "within the given notebook.") do |tag|
      options.tag = tag
    end
    opts.on("--remove-tags [t1,t2,t3]", Array,
            "List of tags to remove from output posts.",
            "If no argument given, defaults to --tag.") do |removetags|
      options.removetags = removetags || [options.tag]
    end
    opts.on("-s", "--search SEARCHEXP",
            "Process notes that match given search",
            "expression. If specified, --notebook",
            "and --tag are ignored.") do |searchexp|
      options.searchexp = searchexp
      options.tag = nil
      options.notebook = nil
    end
    opts.separator 'Output options:'
    opts.on("-p", "--output-plugin PLUGIN", PLUGINS,
            "Output plugin to use (Valid values: #{PLUGINS.join(', ')})") do |plugin|
      options.outputplugin = plugin
    end
    opts.on("-o", "--output-dir OUTDIR",
            "Base dir of hugo output installation") do |outdir|
      options.outdir = outdir
    end
    opts.on("--rebuild-all",
            "Process all notes that match the given",
            "conditions (normally only updated notes",
            "are processed)") { options.rebuild_all = true }
    opts.separator 'Other options:'
    opts.on("--auth [TOKEN]",
            "Force Evernote reauthentication (will",
            "happen automatically if needed). Use",
            "TOKEN if given, otherwise get one",
            "interactively.") do |forceauth|
      options.forceauth = true
      options.authtoken = forceauth
    end
    opts.on("--config-tag TAG",
            "Specify tag to determine config notes",
            "(default: #{options.configtag})") { |conftag|
      options.configtag = conftag
    }
    opts.on_tail("-v", "--verbose", "Verbose mode") { options.verbose=true }
    opts.on_tail("-d", "--debug", "Debug output mode") {
      options.debug=true
      options.verbose=true
    }
    opts.on_tail("--version", "Show version") { opts.show_version }
    opts.on_tail("-h", "--help", "Shows this help message") { opts.show_usage }
  end

  opts.parse!

  begin
    eval "require 'output/#{options.outputplugin}'"
  rescue LoadError
    error "There was an error loading output module '#{plugin}': #{e.to_s}"
    exit 1
  end

  $enwrite_verbose = options.verbose
  $enwrite_debug = options.debug

  verbose("Options: " + options.to_s)

  if not (options.notebook or options.searchexp or options.forceauth)
    error "You have to specify at least one of --notebook, --search or --auth"
    exit(1)
  end
  exps = [ options.searchexp ? options.searchexp : nil,
           options.notebook ? "notebook:#{options.notebook}" : nil,
           options.tag ? "tag:#{options.tag}" : nil,
         ].reject(&:nil?)
  searchexp = exps.join(' ')

  verbose "Output dir: #{options.outdir}"
  verbose "Search expression: #{searchexp}"

  begin
    
    # Initialize Evernote access
    Evernote_utils.init(options.forceauth, options.authtoken)

    if not searchexp # Only --auth was specified
      exit 0
    end
    
    updatecount_index = "updatecount_#{searchexp}"
    latestUpdateCount = config(updatecount_index, 0)
    if options.rebuild_all
      msg "Processing ALL notes (--rebuild-all)."
      latestUpdateCount = 0
    end

    verbose "Latest stored update count for #{searchexp}: #{latestUpdateCount}"

    currentState = Evernote_utils.noteStore.getSyncState(Evernote_utils.authToken)
    currentUpdateCount = currentState.updateCount

    verbose "Current update count for the account: #{currentUpdateCount}"

    if (currentUpdateCount > latestUpdateCount)
      msg "Checking updated Evernote contents..."

      # There are new notes, doesn't necessarily mean any of them are withing the
      # selected content, so we keep track of whether we actually produce any updates
      # in the output.
      something_updated = false

      filter = Evernote::EDAM::NoteStore::NoteFilter.new
      filter.words = searchexp
      filter.order = Evernote::EDAM::Type::NoteSortOrder::UPDATE_SEQUENCE_NUMBER
      filter.ascending = false

      spec = Evernote::EDAM::NoteStore::NotesMetadataResultSpec.new
      spec.includeTitle = true
      spec.includeCreated = true
      spec.includeTagGuids = true
      spec.includeContentLength = true
      spec.includeUpdateSequenceNum = true
      spec.includeDeleted = true

      results = Evernote_utils.noteStore.findNotesMetadata(Evernote_utils.authToken,
                                                           filter,
                                                           0,
                                                           Evernote::EDAM::Limits::EDAM_USER_NOTES_MAX,
                                                           spec)

      # Get also deleted notes so we can remove from the blog
      filter.inactive = true
      delresults = Evernote_utils.noteStore.findNotesMetadata(Evernote_utils.authToken,
                                                              filter,
                                                              0,
                                                              Evernote::EDAM::Limits::EDAM_USER_NOTES_MAX,
                                                              spec)

      # Go through the list looking for config notes, parse them and remove
      # them from the list
      enwriteconfig = { 'hugo' => {
                          'base_dir' => options.outdir,
                          'rebuild_all' => options.rebuild_all,
                        },
                      }

      if Evernote_utils.tags.include?(options.configtag)
        config_tag_guid = Evernote_utils.tags[options.configtag].guid
        results.notes.select { |note|
          note.tagGuids.include?(config_tag_guid)
        }.each { |confignotemd|
          msg "Found config note '#{confignotemd.title}'"
          confignote = Evernote_utils.getWholeNote(confignotemd)
          enml = ENML_utils.new(confignote.content)
          configtext = enml.to_text
          debug "   Config note text: '#{configtext}'"
          configyaml = YAML.load(configtext)
          debug "   Config note YAML: #{configyaml}"
          enwriteconfig.deep_merge!(configyaml)
          debug "   enwriteconfig = #{enwriteconfig}"
          results.notes.delete(confignotemd)
          results.totalNotes -= 1
        }
      end
      verbose "Final enwrite config: #{enwriteconfig}"

      files_tag = "#{options.filestagprefix}_#{options.outputplugin}"

      if Evernote_utils.tags.include?(files_tag)
        files_tag_guid = Evernote_utils.tags[files_tag].guid
        results.notes.select { |note|
          note.tagGuids.include?(files_tag_guid) &&
            note.updateSequenceNum > latestUpdateCount
        }.each { |filesnotemd|
          msg "Found files note '#{filesnotemd.title}'"
          filesnote = Evernote_utils.getWholeNote(filesnotemd)
          enml = ENML_utils.new(filesnote.content, filesnote.resources)
          files = enml.resource_files
          Dir.chdir("#{options.outdir}")
          files.each do |file|
            case
            when file[:basename] =~ /\.tar.gz$/
              f = Tempfile.new('enwrite')
              begin
                verbose "   Saving file #{file[:basename]} to #{f.path}"
                f.write(file[:data])
                f.close
                verbose "   Unpacking file #{f.path} with tar"
                ok = system("tar zxf #{f.path}")
                unless ok
                  error "   An error occurred when unpacking #{f.path}"
                end
              ensure
                f.close
                f.unlink
              end
            else
              open("#{options.outdir}/#{file[:basename]}", "w") do |f|
                verbose "   Saving file #{f.path}"
                f.write(file[:data])
              end
            end
          end
          something_updated = true
          results.notes.delete(filesnotemd)
          results.totalNotes -= 1
        }
      end

      debug "Evaluating: #{options.outputplugin.capitalize}.new(enwriteconfig[options.outputplugin])"
      writer = eval "#{options.outputplugin.capitalize}.new(enwriteconfig[options.outputplugin])"
      
      (results.notes + delresults.notes).select {
        |note| note.updateSequenceNum > latestUpdateCount
      }.sort_by {
        |note| note.updateSequenceNum
      }.each do |metadata|
        verbose "######################################################################"
        note = Evernote_utils.getWholeNote(metadata)
        note.tagNames = note.tagNames - options.removetags
        # This either creates or deletes posts as appropriate
        writer.output_note(note)
        something_updated = true
      end
      # Persist the latest updatecount for next time
      setconfig(updatecount_index, currentUpdateCount)
    end

    if something_updated
      exit 0
    else
      msg "No updated notes that match #{searchexp}"
      exit 1
    end
  rescue Evernote::EDAM::Error::EDAMUserException => e
    #the exceptions that come back from Evernote are hard to read, but really important to keep track of
    msg = "Caught an exception from Evernote trying to create a note.  #{Evernote_utils.translate_error(e)}"
    raise msg
  rescue Evernote::EDAM::Error::EDAMSystemException => e
    #the exceptions that come back from Evernote are hard to read, but really important to keep track of
    msg = "Caught an exception from Evernote trying to create a note.  #{Evernote_utils.translate_error(e)}"
    raise msg
  end
end