class Troy::Page

def compress(content)
  content = HtmlPress.press(content) if config.assets.compress_html
  content
end

def config
  Troy.configuration
end

def content
  ExtensionMatcher
    .new(path)
    .default { meta.content }
    .on("builder") { XML.new(meta.content, to_context).to_xml }
    .on("erb") { EmbeddedRuby.new(meta.content, to_context).render }
    .on("md") { Markdown.new(meta.content).to_html }
    .on("txt") { EmbeddedRuby.new(meta.content, to_context).render }
    .match
end

def filename
  ExtensionMatcher.new(path)
                  .default { "#{permalink}.html" }
                  .on("builder") { "#{permalink}.xml" }
                  .on("xml") { "#{permalink}.xml" }
                  .on("txt") { "#{permalink}.txt" }
                  .match
end

def initialize(site, path, meta = nil)
  @site = site
  @path = path
  @meta = meta || Meta.new(path)
end

def layout
  site.root.join("layouts/#{meta.fetch('layout', 'default')}.erb")
end

def method_missing(name, *args, &block)
  return meta[name.to_s] if meta.key?(name.to_s)
  super
end

def output_file
  base = File.dirname(path)
             .gsub(site.root.join("source").to_s, "")
             .gsub(%r{^/}, "")
  site.root.join("public", base, filename)
end

def permalink
  meta.fetch("permalink", File.basename(path).gsub(/\..*?$/, ""))
end

def render
  ExtensionMatcher.new(path)
                  .default { content }
                  .on("html") { compress render_erb }
                  .on("md") { compress render_erb }
                  .on("erb") { compress render_erb }
                  .match
end

def render_erb
  if layout.exist?
    EmbeddedRuby.new(
      layout.read,
      to_context.merge(content: content)
    ).render
  else
    content
  end
end

def respond_to_missing?(name, _include_private = false)
  meta.key?(name.to_s)
end

def save
  FileUtils.mkdir_p(File.dirname(output_file))
  save_to(output_file)
end

def save_to(path)
  File.open(path, "w") do |file|
    I18n.with_locale(meta.locale) do
      file << render
    end
  end
end

def to_context
  {
    page: self,
    site: site
  }
end