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require 'date'

def parse_post filename
  file_raw = File.read(src filename).force_encoding('UTF-8').split('---')
  post = YAML.load file_raw[0]
  post['date'] = DateTime.parse(post['date'])
  post['content'] = file_raw[1].strip
  post['filename'] = filename
  post
end

def generate_blog_post post
  ERB.new(File.read(src 'post-template.html.erb')).result binding
end

def posts
  Dir.new(src 'blog').children.map do |filename|
    post = parse_post "blog/#{filename}"
  end.sort do |a, b|
    b['date'] <=> a['date']
  end
end

def format_date date
  date.strftime '%B %-d, %Y'
end

def write_blog_files
  posts.each do |post|
    content = ERB.new(File.read(src 'post-template.html.erb')).result binding
    write_templated content, post['filename'], head_title: post['title'], h1_title: 'Blog.'
  end
end

def write_blog_archive
  content = ERB.new(File.read(src 'blog.html.erb')).result
  write_templated content, 'blog.html', title: 'Blog.'
end