An experiment to create a wiki cli app. The results are not promising.

wiki-cli.rb

#!/usr/bin/env ruby

require "net/http"
require "json"
require "bundler/inline"

gemfile do
  source 'https://rubygems.org'
  gem "addressable"
  gem "tty-prompt"
  gem "reverse_markdown"
  gem "tty-markdown"
  gem "tty-pager"
  gem "ruby-readability", :require => 'readability'
end

URL_TEMPLATE = Addressable::Template
  .new("https://{lang}.wikipedia.org/w/api.php{?action,search,limit,format}")
  .partial_expand(lang: "en", action: "opensearch", limit: 25, format: "json")
  .freeze

search = ARGV.map(&:strip).join(" ")

if search.empty?
  puts "usage: wiki-cli [SEARCH TERM]"
  exit(1)
end

search_url = URL_TEMPLATE
  .expand(search: search)
  .then { URI(_1) }
response_body = Net::HTTP.get(search_url)
search_results = JSON
  .parse(response_body)
  .then { |json| json[1].zip(json[3]) }
  .to_h
  .freeze

choice = TTY::Prompt
  .new(
    quiet: true,
    track_history: false,
    interrupt: :exit,
    symbols: { marker: ">" },
    enable_color: !ENV["NO_COLOR"]
  )
  .select("Choose a wikipedia article to read:", search_results.keys)

content_url = search_results
  .fetch(choice)
  .then { URI(_1) }
content_html = Net::HTTP.get(content_url)
article_html = Readability::Document
  .new(
    content_html,
    tags: %w[div p h1 h2 h3 h4 h5 h6 a ul li table tbody tr td],
    remove_empty_nodes: true,
    blacklist: 'h2#References, ol.references, figcaption'
  ).content
markdown = ReverseMarkdown.convert(article_html)
pretty_markdown = TTY::Markdown.parse(markdown)
TTY::Pager.page(pretty_markdown, width: 100)