class Fontist::Formula

# File lib/fontist/formula.rb, line 96
def self.all
  formulas = Dir[Fontist.formulas_path.join("**/*.yml").to_s].map do |path|
    Formula.from_file(path)
  end

  FormulaCollection.new(formulas)
end

# File lib/fontist/formula.rb, line 104
def self.all_keys
  Dir[Fontist.formulas_path.join("**/*.yml").to_s].map do |path|
    path.sub("#{Fontist.formulas_path}/", "").sub(".yml", "")
  end
end

# File lib/fontist/formula.rb, line 110
def self.find(font_name)
  Indexes::FontIndex.from_file.load_formulas(font_name).first
end

# File lib/fontist/formula.rb, line 161
def self.find_by_font_file(font_file)
  key = Indexes::FilenameIndex.from_file
    .load_index_formulas(File.basename(font_file))
    .flat_map(&:name)
    .first

  find_by_key(key)
end

# File lib/fontist/formula.rb, line 144
def self.find_by_key(key)
  path = Fontist.formulas_path.join("#{key}.yml")
  return unless File.exist?(path)

  from_file(path)
end

# File lib/fontist/formula.rb, line 140
def self.find_by_key_or_name(name)
  find_by_key(name) || find_by_name(name)
end

# File lib/fontist/formula.rb, line 151
def self.find_by_name(name)
  key = name_to_key(name)

  find_by_key(key)
end

# File lib/fontist/formula.rb, line 118
def self.find_fonts(font_name)
  formulas = Indexes::FontIndex.from_file.load_formulas(font_name)

  formulas.map do |formula|
    formula.all_fonts.select do |f|
      f.name.casecmp?(font_name)
    end
  end.flatten
end

# File lib/fontist/formula.rb, line 114
def self.find_many(font_name)
  Indexes::FontIndex.from_file.load_formulas(font_name)
end

# File lib/fontist/formula.rb, line 128
def self.find_styles(font_name, style_name)
  formulas = Indexes::FontIndex.from_file.load_formulas(font_name)

  formulas.map do |formula|
    formula.all_fonts.map do |f|
      f.styles.select do |s|
        f.name.casecmp?(font_name) && s.type.casecmp?(style_name)
      end
    end
  end.flatten
end

# File lib/fontist/formula.rb, line 170
def self.from_file(path)
  unless File.exist?(path)
    raise Fontist::Errors::FormulaCouldNotBeFoundError,
          "Formula file not found: #{path}"
  end

  content = File.read(path)

  from_yaml(content).tap do |formula|
    formula.path = path
    formula.name = titleize(formula.key_from_path) if formula.name.nil?
  end
end

# File lib/fontist/formula.rb, line 157
def self.name_to_key(name)
  name.downcase.gsub(" ", "_")
end

# File lib/fontist/formula.rb, line 184
def self.titleize(str)
  str.split("/").map do |part|
    part.tr("_", " ").split.map(&:capitalize).join(" ")
  end.join("/")
end

# File lib/fontist/formula.rb, line 92
def self.update_formulas_repo
  Update.call
end

# File lib/fontist/formula.rb, line 241
def all_fonts
  Array(fonts) + collection_fonts
end

# File lib/fontist/formula.rb, line 245
def collection_fonts
  Array(font_collections).flat_map do |c|
    c.fonts.flat_map do |f|
      f.styles.each do |s|
        s.font = c.filename
        s.source_font = c.source_filename
      end
      f
    end
  end
end

# File lib/fontist/formula.rb, line 194
def downloadable?
  !resources.nil? && !resources.empty?
end

# File lib/fontist/formula.rb, line 223
def file_size
  return nil if resources.nil? || resources.empty?

  resources.first.file_size
end

# File lib/fontist/formula.rb, line 229
def font_by_name(name)
  all_fonts.find do |font|
    font.name.casecmp?(name)
  end
end

# File lib/fontist/formula.rb, line 235
def fonts_by_name(name)
  all_fonts.select do |font|
    font.name.casecmp?(name)
  end
end

# File lib/fontist/formula.rb, line 204
def key
  @key ||= key_from_path
end

# File lib/fontist/formula.rb, line 208
def key_from_path
  return "" unless @path

  escaped = Regexp.escape("#{Fontist.formulas_path}/")
  @path.sub(Regexp.new("^#{escaped}"), "").sub(/\.yml$/, "").to_s
end

# File lib/fontist/formula.rb, line 215
def license
  open_license || requires_license_agreement
end

# File lib/fontist/formula.rb, line 219
def license_required?
  requires_license_agreement ? true : false
end

# File lib/fontist/formula.rb, line 190
def manual?
  !downloadable?
end

# File lib/fontist/formula.rb, line 198
def source
  return nil if resources.empty?

  resources.first.source
end

# File lib/fontist/formula.rb, line 257
def style_override(font)
  all_fonts
    .map(&:styles)
    .flatten
    .detect { |s| s.family_name == font }&.override || {}
end