#!/usr/bin/env ruby

require "json"
require "open-uri"

FEED_URL = "https://bookmarks.davideisinger.com/u:dce.json"

index = (ARGV.pop || 1).to_i
content = []
links = []
refs = []

item_content = ->(item) do
  title = "[#{item["title"]}][#{index}]"

  if item["referrer"]
    title += " ([via][#{index + 1}])"
  end
  
  <<~OUT
    * #{title}

      > #{item["description"].tr("\n", " ").squeeze(" ")}
  OUT
end

item_link = ->(item) do
  "[#{index}]: #{item["url"]}"
end

add_item = ->(item) do
  ref = `bin/archive "#{item["url"]}"`.gsub("references:\n", "")

  content << item_content[item]
  links << item_link[item]
  refs << ref

  index += 1

  if item["referrer"]
    ref = `bin/archive "#{item["referrer"]}"`.gsub("references:\n", "")

    links << "[#{index}]: #{item["referrer"]}"
    refs << ref

    index += 1
  end
end

result = -> do
  <<~OUT
    ---
    #{content.join("\n")}
    #{links.join("\n")}
    ---
    references:
    #{refs.join}
  OUT
end

process_item = ->(item) do
  puts <<~OUT

    #{item_content[item]}
    #{item_link[item]}

  OUT

  print "Include? (y/n/a): "

  case gets.chomp
  when "y"
    add_item[item]
  when "n"
    nil
  when "a"
    puts result.call
    abort
  else
    process_item[item]
  end
end

URI.parse(FEED_URL).open do |json|
  feed = JSON.parse(json.read)

  feed.each do |item|
    process_item[item]
  end

  puts result.call
end