# frozen_string_literal: true

require "rspec/core/rake_task"

module DNote
  # = Developmer's Notes Rake Task
  #
  class RakeTask < Rake::TaskLib
    require "rake/clean"

    # Default note labels to looked for in source code.
    DEFAULT_LABELS = %w(TODO FIXME OPTIMIZE DEPRECATE).freeze

    # File paths to search.
    attr_accessor :files

    # Labels to document. Defaults are: TODO, FIXME, OPTIMIZE and DEPRECATE.
    attr_accessor :labels

    # Formats (xml, html, rdoc, rdoc/list and so on).
    attr_accessor :formats

    # Exclude paths.
    attr_accessor :exclude

    # Ignore paths based on any part of pathname.
    attr_accessor :ignore

    # Output directory to save notes file. Defaults to <tt>dnote/</tt> under
    # the project log directory (eg. <tt>log/dnote/</tt>).
    attr_reader :output

    # Title to use if temaplte can use it.
    attr_accessor :title

    def output=(path)
      @output = Pathname.new(path)
    end

    def init
      require "dnote"
      require "dnote/format"
      @files   = "**/*.rb"
      @output  = "log/dnote"
      @formats = ["index"]
      @labels  = nil
    end

    def define
      desc "Collect Developer's Notes"
      task "dnote" do
        document
      end
      task "dnote:clobber" do
        clean
      end
      task clobber: ["dnote:clobber"]
    end

    # Generate notes document(s).
    def document
      abort "dnote: #{output} is not a directory" unless output.directory?

      session = new_session

      formats.each do |format|
        generate_document_for_format(session, format)
      end
    end

    # Remove output files.
    def clean
      formats.each do |format|
        clean_format format
      end
    end

    private

    def new_session
      ::DNote::Session.new do |s|
        s.paths   = files
        s.exclude = exclude
        s.ignore  = ignore
        s.labels  = labels
        s.title   = title
        s.output  = output
        s.dryrun  = application.options.dryrun # trial?
      end
    end

    def generate_document_for_format(session, format)
      if format == "index"
        session.format = "html"
        session.output = File.join(output, "index.html")
      else
        session.format = format
      end
      session.run
      report "Updated #{output.to_s.sub("#{Dir.pwd}/", '')}" unless trial?
    end

    def clean_format(format)
      if format == "index"
        file = "#{output}index.html".to_s
      else
        ext = ::DNote::Format::EXTENSIONS[format] || format
        file = (output + "notes.#{ext}").to_s
      end
      rm(file)
      report "Removed #{output}"
    end
  end
end