3 files changed, 146 insertions, 0 deletions

diff --git a/lib/ccc_conventions.rb b/lib/ccc_conventions.rb
new file mode 100644
index 0000000..352dd3c
--- /dev/null
+++ b/lib/ccc_conventions.rb
@@ -0,0 +1,53 @@
+module CccConventions
+  ERFA_PARENT_NAME       = "club/erfas"
+  CHAOSTREFF_PARENT_NAME = "club/chaostreffs"
+  SITEMAP_COLLAPSED_PATHS = %w[updates club/erfas club/chaostreffs disclosure].freeze
+
+  NODE_KINDS = {
+    "top_level" => {
+      parent:       -> { Node.root },
+      parent_match: ->(path) { path == [] },
+      path_prefix:  "",
+      label:        "Top Level"
+    },
+    "generic" => {
+      parent_match: ->(path) { true },
+      label:        "Generic",
+      hint:         "Can be created anywhere - choose the parent below."
+    },
+    "update" => {
+      parent:       -> { Update.find_or_create_parent },
+      parent_match: ->(path) { path[0] == "updates" && (path.length == 1 || path[1] =~ /\A\d{4}\z/) },
+      tags:         ["update"],
+      path_prefix:  -> { "updates/#{Time.now.year}" },
+      label:        "Update",
+      hint:         -> { "Automatically created in /updates/#{Time.now.year}/, gets tag \"update\", and inherits the update template." }
+    },
+    "press_release" => {
+      parent:       -> { Update.find_or_create_parent },
+      parent_match: ->(path) { path[0] == "updates" && (path.length == 1 || path[1] =~ /\A\d{4}\z/) },
+      tags:         ["update", "pressemitteilung"],
+      path_prefix:  -> { "updates/#{Time.now.year}" },
+      label:        "Pressemitteilung",
+      hint:         -> { "Automatically created in /updates/#{Time.now.year}/, gets tags \"update, pressemitteilung\", and inherits the update template." }
+    },
+    "erfa" => {
+      parent:       -> { Node.find_by_unique_name!(ERFA_PARENT_NAME) },
+      parent_match: ->(path) { path == ["club", "erfas"] },
+      tags:         ["erfa-detail"],
+      template:     "chapter_detail",
+      path_prefix:  ERFA_PARENT_NAME,
+      label:        "Erfa",
+      hint:         "Automatically created under the Erfa-Kreise overview page, gets tag \"erfa-detail\", and uses the chapter detail template."
+    },
+    "chaostreff" => {
+      parent:       -> { Node.find_by_unique_name!(CHAOSTREFF_PARENT_NAME) },
+      parent_match: ->(path) { path == ["club", "chaostreffs"] },
+      tags:         ["chaostreff-detail"],
+      template:     "chapter_detail",
+      path_prefix:  CHAOSTREFF_PARENT_NAME,
+      label:        "Chaostreff",
+      hint:         "Automatically created under the Chaostreffs overview page, gets tag \"chaostreff-detail\", and uses the chapter detail template."
+    }
+  }.freeze
+end
diff --git a/lib/html_word_diff.rb b/lib/html_word_diff.rb
new file mode 100644
index 0000000..aa0cb86
--- /dev/null
+++ b/lib/html_word_diff.rb
@@ -0,0 +1,74 @@
+require 'diff/lcs'
+require 'cgi'
+
+module HtmlWordDiff
+  TOKEN_REGEXP = /<[^>]*>|[[:space:]]+|[[:alnum:]]+|[^[:space:][:alnum:]<>]/
+
+  def self.inline(old_html, new_html)
+    html = +''
+    each_change(old_html, new_html) do |action, old_token, new_token|
+      case action
+      when '='
+        html << new_token
+      when '-'
+        html << wrap_removed(old_token)
+      when '+'
+        html << wrap_inserted(new_token)
+      when '!'
+        html << wrap_removed(old_token)
+        html << wrap_inserted(new_token)
+      end
+    end
+    html
+  end
+
+  def self.side_by_side(old_html, new_html)
+    old_out = +''
+    new_out = +''
+    each_change(old_html, new_html) do |action, old_token, new_token|
+      case action
+      when '='
+        old_out << old_token
+        new_out << new_token
+      when '-'
+        old_out << wrap_removed(old_token)
+      when '+'
+        new_out << wrap_inserted(new_token)
+      when '!'
+        old_out << wrap_removed(old_token)
+        new_out << wrap_inserted(new_token)
+      end
+    end
+    [old_out, new_out]
+  end
+
+  def self.each_change(old_html, new_html)
+    Diff::LCS.sdiff(tokenize(old_html), tokenize(new_html)).each do |change|
+      yield change.action, change.old_element, change.new_element
+    end
+  end
+
+  def self.tokenize(html)
+    html.to_s.scan(TOKEN_REGEXP)
+  end
+
+  def self.tag_token?(token)
+    token.to_s.match?(/\A<[^>]*>\z/)
+  end
+
+  def self.wrap_removed(token)
+    if tag_token?(token)
+      %(<del class="diff_structural" title="removed: #{CGI.escapeHTML(token)}">\u00b6</del>)
+    else
+      "<del>#{token}</del>"
+    end
+  end
+
+  def self.wrap_inserted(token)
+    if tag_token?(token)
+      %(<ins class="diff_structural" title="added: #{CGI.escapeHTML(token)}">\u00b6</ins>)
+    else
+      "<ins>#{token}</ins>"
+    end
+  end
+end
diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
new file mode 100644
index 0000000..563dfad
--- /dev/null
+++ b/lib/tasks/assets.rake
@@ -0,0 +1,19 @@
+namespace :assets do
+  desc "Regenerate ImageMagick variants for every image asset from its stored original -- rerun whenever a new style is added to FileAttachment::STYLES after assets already exist. Scope to one asset first with ASSET_ID=123."
+  task :regenerate_variants => :environment do
+    scope = Asset.images
+    scope = scope.where(id: ENV["ASSET_ID"]) if ENV["ASSET_ID"].present?
+
+    scope.find_each do |asset|
+      original_path = asset.send(:file_path, :original)
+
+      unless File.exist?(original_path)
+        puts "Skipping Asset##{asset.id} (#{asset.name}) -- no original file at #{original_path}"
+        next
+      end
+
+      asset.send(:generate_variants, original_path)
+      puts "Regenerated variants for Asset##{asset.id} (#{asset.name})"
+    end
+  end
+end