module Slather::CoverageInfo

def branch_coverage_data_for_statement_on_line(line_number)
  branch_coverage_data[line_number] || []
end

def ignored?
  project.ignore_list.any? do |ignore|
    File.fnmatch(ignore, source_file_pathname_relative_to_repo_root)
  end
end

def include_file?
  rv = true # default true return value to fix https://github.com/SlatherOrg/slather/issues/561
  project.source_files.any? do |include|
    rv = File.fnmatch(include, source_file_pathname_relative_to_repo_root)
  end
  rv
end

def num_branch_hits_for_statement_on_line(line_number)
  branch_coverage_data_for_statement_on_line(line_number).count { |hit_count| hit_count > 0 }
end

def num_branches_for_statement_on_line(line_number)
  branch_coverage_data_for_statement_on_line(line_number).length
end

def num_branches_testable
  branch_coverage_data.keys.reduce(0) do |sum, line_number|
    sum += num_branches_for_statement_on_line(line_number)
  end
end

def num_branches_tested
  branch_coverage_data.keys.reduce(0) do |sum, line_number|
    sum += num_branch_hits_for_statement_on_line(line_number)
  end
end

def num_lines_testable
  line_coverage_data.compact.count
end

def num_lines_tested
  line_coverage_data.compact.select { |cd| cd > 0 }.count
end

def percentage_branch_coverage_for_statement_on_line(line_number)
  rate_branch_coverage_for_statement_on_line(line_number) * 100
end

def percentage_lines_tested
  if num_lines_testable == 0
    100
  else
    rate_lines_tested * 100
  end
end

def rate_branch_coverage_for_statement_on_line(line_number)
  branch_data = branch_coverage_data_for_statement_on_line(line_number)
  if branch_data.empty?
    0.0
  else
    (num_branch_hits_for_statement_on_line(line_number) / branch_data.length.to_f)
  end
end

def rate_branches_tested
  if (num_branches_testable > 0)
    (num_branches_tested / num_branches_testable.to_f)
  else
    0.0
  end
end

def rate_lines_tested
  if num_lines_testable > 0
    (num_lines_tested / num_lines_testable.to_f)
  else
    0
  end
end

def source_file_pathname_relative_to_repo_root
  source_file_pathname.realpath.relative_path_from(Pathname("./").realpath)
end