# encoding: utf-8
# copyright: 2015, Dominik Richter
# author: Dominik Richter
# author: Christoph Hartmann
# license: All rights reserved

require 'verify/specfile'
require 'vulcano/log'

module Vulcano
  # Handle Vulcano Profiles
  class Profiles
    attr_reader :profiles
    def initialize(opts = {})
      @profiles = {}
      @profile_id = opts[:id]
      @log = Log.new(opts)
    end

    def add_folder(f)
      path = File.expand_path(f)
      if File.directory? path
        add_specs_in_folder path
      else
        @log.error "Path is not a folder: #{path}"
      end
      self
    end

    def valid_folder?(f)
      path = File.expand_path(f)
      if !File.directory? path
        return @log.error "This is not a folder: #{path}"
      else
        @log.ok 'Valid directory'
      end

      metadata = Metadata.for_path(path, @profile_id)
      @log.ok 'vmetadata.rb' unless metadata.nil? or !metadata.valid?

      specs = Dir["#{path}/spec/*_spec.rb"]
      if specs.empty?
        @log.warn "No tests found in #{path}"
      end
      specs.each { |s| valid_spec? s, metadata }
    end

    def valid_spec?(f, metadata)
      return @log.error "Can't find spec file #{f}" unless File.file? f

      # Load the spec file
      specs = SpecFile.from_file(f, metadata)
      valid = validate_spec_file(specs)

      return unless valid && specs.instance_variable_get(:@invalid_calls).empty?
      @log.ok "Valid spec file in #{f} with #{meta['rules'].length} rules"
    end

    private

    def validate_spec_file(specs, invalid) # rubocop:disable Metrics/AbcSize, Metrics/PerceivedComplexity
      valid = true
      # helper for printing violations
      invalid = lambda {|type, msg|
        @log.send type, "#{msg} (#{File.basename f})"
        valid = false if type == :error
      }

      # find all errors during parsing
      specs.errors.each do |err|
        invalid.call(:error, err)
      end
      # detect missing metadata
      meta = specs.metadata
      if meta['title'].nil?
        invalid.call(:warn, 'Missing title in spec file')
      end
      if meta['copyright'].nil?
        invalid.call(:warn, 'Missing copyright in spec file')
      end
      # detect empty rules
      unless meta['rules'][''].nil?
        invalid.call(:error, 'Please configure IDs for all rules.')
      end

      meta['rules'].each do |k, v|
        if v['impact'].nil?
          invalid.call(:error, "Missing impact for rule #{k}")
        else
          invalid.call(:error, "Impact cannot be larger than 1.0 for rule #{k}") if v['impact'] > 1.0
          invalid.call(:error, "Impact cannot be less than 0.0 for rule #{k}") if v['impact'] < 0.0
        end
        invalid.call(:warn, "Missing title for rule #{k}") if v['title'].nil?
        invalid.call(:warn, "Missing description for rule #{k}") if v['desc'].nil?
      end

      valid
    end

    def add_specs_in_folder(path)
      allrules = {}
      meta = Metadata.for_path(path, @profile_id, @log)

      Dir["#{path}/spec/*_spec.rb"].each do |specfile|
        rel_path = specfile.sub(File.join(path, ''), '')
        specs = SpecFile.from_file(specfile, meta)
        allrules[rel_path] = sanitize_specfile_json(specs.metadata)
      end

      meta.dict['rules'] = allrules
      @profiles = meta.dict
    end

    def sanitize_specfile_json(j)
      j['rules'].each do |k, v|
        v['title'] = k if v['title'].nil?
        v['desc'] = '' if v['desc'].nil?
        v['impact'] = 0.5 if v['impact'].nil?
      end
      j
    end
  end
end