#!/usr/bin/env ruby
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/. -}

# frozen_string_literal: true

require 'pg'

connection = PG.connect(user: ENV['user'], dbname: ENV['DBNAME'])
query = <<~SQL
  SELECT articles.*, categories.name
  FROM articles
  INNER JOIN categories on categories.id = articles.category_id
SQL
connection.exec query do |result|
  result.each do |row|
    post_contents = <<~POST
      ---
      layout: post
    POST

    date = row['created_at'].gsub /\.[[:digit:]]+$/, '' # Remove milliseconds from the value.
    post_contents << "date: #{date}\n"
    category = row['name']
    post_contents << "tags: #{category}\n"

    if row['title'].include? '"'
      post_contents << "title: |\n  #{row['title']}\n"
    else
      post_contents << "title: #{row['title']}\n"
    end

    post_contents << "teaser:\n  #{row['teaser']}\n" unless row['teaser'].nil?
    post_contents << "---\n"
    post_contents << "#{row['description'].delete("\r")}\n"

    post_path = (Pathname.new('posts') + row['slug']).sub_ext('.html')

    post_path.dirname.mkpath
    post_path.write post_contents
  end
end