require "tailwindcss-rails"
require "shellwords"
require "panda_cms/engine"

ENV["TAILWIND_PATH"] ||= Tailwindcss::Engine.root.join("exe/tailwindcss").to_s

namespace :panda_cms do
  desc "Generate missing blocks from template files"
  task generate_missing_blocks: [:environment] do
    # Loop through all templates in app/views/layouts/*.html.erb
    Dir.glob("app/views/layouts/*.html.erb").each do |file|
      File.open(file).each_line do |line|
        # Matches:
        # PandaCms::RichTextComponent.new(key: :value)
        # PandaCms::RichTextComponent.new key: :value, key: value
        line.match(/PandaCms::([a-zA-Z]+)Component\.new[ \(]+([^\)]+)[\)]*/) do |match|
          # Extract the hash values
          template_path = file.gsub("app/views/", "").gsub(".html.erb", "")
          template_name = template_path.gsub("layouts/", "").titleize

          # Create the template if it doesn't exist
          template = PandaCms::Template.find_or_create_by!(file_path: template_path) do |template|
            template.name = template_name
          end

          block_kind = match[1].underscore

          match[2].split(",").map do |keyvar|
            key, value = keyvar.split(":", 2)
            next if key != "key"

            block_name = value.to_s.strip.tr(":", "")
            # Create the block if it doesn't exist
            block = PandaCms::Block.find_or_create_by!(template: template, kind: block_kind, key: block_name) do |block|
              block.name = block_name.titleize
            end

            # For the given block, create the block_content for each page using the template
            template.pages.each do |page|
              PandaCms::BlockContent.find_or_create_by!(block: block, page: page) do |block_content|
                block_content.content = ""
              end
            end
          end
        end
      end
    end
  end

  namespace :assets do
    desc "Compile assets for release"
    task :compile do
      # Copy all the JS files into public
      admin_js_path = PandaCms::Engine.root.join("app/javascript/panda_cms")
      FileUtils.cp_r "#{admin_js_path}/.", PandaCms::Engine.root.join("public/panda-cms-assets/javascripts")
    end

    desc "Build admin assets for Panda CMS"
    task :admin do
      # This is enough for development
      run_tailwind(
        root_path: PandaCms::Engine.root,
        input_path: "app/assets/stylesheets/panda_cms/application.tailwind.css",
        output_path: "app/assets/builds/panda_cms.css"
      )
    end

    desc "Build dummy assets for Panda CMS"
    # We only care about this in development
    task :dummy do
      run_tailwind(
        root_path: Rails.application.root,
        input_path: "app/assets/stylesheets/application.tailwind.css",
        output_path: "app/assets/builds/application.css",
        config_path: "config/tailwind.config.js"
      )
    end

    desc "Watch admin assets for Panda CMS"
    # We only care about this in development
    task :watch_admin do
      run_tailwind(
        root_path: PandaCms::Engine.root,
        input_path: "app/assets/stylesheets/panda_cms/application.tailwind.css",
        output_path: "app/assets/builds/panda_cms.css",
        watch: true
      )
    end

    desc "Watch dummy assets for Panda CMS"
    # We only care about this in development
    task :watch_dummy do
      run_tailwind(
        root_path: Rails.application.root,
        input_path: "app/assets/stylesheets/application.tailwind.css",
        output_path: "app/assets/builds/application.css",
        config_path: "config/tailwind.config.js",
        watch: true
      )
    end
  end
end

task default: [:spec, :panda_cms]

def run_tailwind(root_path:, input_path: nil, output_path: nil, config_path: nil, watch: false)
  Rails.logger = Logger.new($stdout)
  config_path ||= root_path.join("config/tailwind.config.js")

  command = [
    ENV["TAILWIND_PATH"],
    "-i #{root_path.join(input_path)}",
    "-o #{root_path.join(output_path)}",
    "-c #{root_path.join(config_path)}",
    "-m"
  ]

  command << "-w" if watch

  exec command.join(" ")
end