require 'pluginscan/reports/sloccount_report'
require 'pluginscan/reports/cloc_report'
require 'pluginscan/reports/vulnerability_report'
require 'pluginscan/reports/issues_report'
require 'pluginscan/reports/issues_report/issues_printer_factory'
require 'pluginscan/error'

module Pluginscan
  class Scanner
    DEFAULT_OPTIONS = {
      output: $stdout,
      sloccount: true,
      cloc: true,
      advisories: true,
      issues_format: :report,
      hide_ignores: false,
    }.freeze

    def initialize(options = {})
      @options = DEFAULT_OPTIONS.merge options
    end

    def scan(plugin_directory)
      fail Errno::ENOENT unless Dir.exist? plugin_directory

      output_sloccount_report(plugin_directory) if @options[:sloccount]
      output_cloc_report(plugin_directory)      if @options[:cloc]

      output_vulnerability_report(plugin_directory) if @options[:advisories]

      output_issues_report(plugin_directory)
      output_error_list_to_file(plugin_directory) if @options[:error_list_file]

      true
    end

    private def output_sloccount_report(plugin_directory)
      sloccount_printer = SLOCCountPrinter.new(@options[:output])
      Reports::SLOCCountReport.print(plugin_directory, sloccount_printer, error_printer)
    end

    private def output_cloc_report(plugin_directory)
      cloc_printer = CLOCPrinter.new(@options[:output])
      Reports::CLOCReport.print(plugin_directory, cloc_printer, error_printer)
    end

    private def output_vulnerability_report(plugin_directory)
      vulnerabilities_printer = VulnerabilitiesPrinter.new(@options[:output])
      Reports::VulnerabilityReport.print(plugin_directory, vulnerabilities_printer, error_printer)
    end

    private def output_issues_report(plugin_directory)
      printer = IssuesPrinterFactory.create_printer(@options[:issues_format], @options[:hide_ignores], @options[:output])
      Reports::IssuesReport.new(plugin_directory, printer).print
    end

    private def error_printer
      @error_printer ||= ErrorPrinter.new(@options[:output])
    end

    private def output_error_list_to_file(plugin_directory)
      error_list_file = @options[:error_list_file]
      fail(IOError, IOError.message(error_list_file.class)) unless error_list_file.respond_to?(:puts)

      printer = IssuesPrinterFactory.create_printer(:error_list, @options[:hide_ignores], error_list_file)
      Reports::IssuesReport.new(plugin_directory, printer).print
    end
  end
end