# frozen_string_literal: true

# Public: Allows to render HTML tags for scripts and styles processed by Vite.
module ViteRails::TagHelpers
  # Public: Renders a script tag for vite/client to enable HMR in development.
  def vite_client_tag
    return unless src = vite_manifest.vite_client_src

    tag.script(src: src, type: 'module')
  end

  # Public: Renders a script tag to enable HMR with React Refresh.
  def vite_react_refresh_tag
    vite_manifest.react_refresh_preamble&.html_safe
  end

  # Public: Resolves the path for the specified Vite asset.
  #
  # Example:
  #   <%= vite_asset_path 'calendar.css' %> # => "/vite/assets/calendar-1016838bab065ae1e122.css"
  def vite_asset_path(name, **options)
    path_to_asset vite_manifest.path_for(name, **options)
  end

  # Public: Renders a <script> tag for the specified Vite entrypoints.
  def vite_javascript_tag(*names,
                          type: 'module',
                          asset_type: :javascript,
                          skip_preload_tags: false,
                          skip_style_tags: false,
                          crossorigin: 'anonymous',
                          media: 'screen',
                          **options)
    entries = vite_manifest.resolve_entries(*names, type: asset_type)
    tags = javascript_include_tag(*entries.fetch(:scripts), crossorigin: crossorigin, type: type, extname: false, **options)
    tags << vite_preload_tag(*entries.fetch(:imports), crossorigin: crossorigin, **options) unless skip_preload_tags
    tags << stylesheet_link_tag(*entries.fetch(:stylesheets), media: media, **options) unless skip_style_tags
    tags
  end

  # Public: Renders a <script> tag for the specified Vite entrypoints.
  def vite_typescript_tag(*names, **options)
    vite_javascript_tag(*names, asset_type: :typescript, **options)
  end

  # Public: Renders a <link> tag for the specified Vite entrypoints.
  def vite_stylesheet_tag(*names, **options)
    style_paths = names.map { |name| vite_asset_path(name, type: :stylesheet) }
    stylesheet_link_tag(*style_paths, **options)
  end

  # Public: Renders an <img> tag for the specified Vite asset.
  def vite_image_tag(name, **options)
    if options[:srcset] && !options[:srcset].is_a?(String)
      options[:srcset] = options[:srcset].map do |src_name, size|
        "#{ vite_asset_path(src_name) } #{ size }"
      end.join(', ')
    end

    image_tag(vite_asset_path(name), options)
  end

private

  # Internal: Returns the current manifest loaded by Vite Ruby.
  def vite_manifest
    ViteRuby.instance.manifest
  end

  # Internal: Renders a modulepreload link tag.
  def vite_preload_tag(*sources, crossorigin:, **options)
    sources.map { |source|
      href = path_to_asset(source)
      try(:request).try(:send_early_hints, 'Link' => %(<#{ href }>; rel=modulepreload; as=script; crossorigin=#{ crossorigin }))
      tag.link(rel: 'modulepreload', href: href, as: 'script', crossorigin: crossorigin, **options)
    }.join("\n").html_safe
  end
end