#!/usr/bin/env ruby
require 'erb'

MEDIA_DIR = '/srv/media'
MEDIA_URL = 'https://media.pdp8.info'
WWW_DIR = '/srv/www/pdp8-test'
SNIPPETS = File.join(File.dirname(__FILE__), 'html')

def nav(cat)
  html = '<nav>'
  html += "<a id='logo' href='/about.html'><img src='/pdp8.png' alt='pdp8'></a>"
  %w[music pictures videos code contact].each do |c|
    cl = c == cat ? 'item current' : 'item'
    html += "<a class='#{cl}' href='/#{c}.html'>#{c}</a>"
  end
  html += "<a class='item' href='/rss.xml'>rss</a>"
  html += "<a id='menu' href='#' onclick='show_vertical_menu()'>&equiv;</a>"
  html += '</nav>'
  html
end

def file_html(basename)
  path = File.join(SNIPPETS, basename + '.html')
  html = File.read(File.join(SNIPPETS, 'head.html'))
  html += nav basename
  html += "<div class='post'>"
  html += File.read(path)
  html += '</div>'
  html += File.read(File.join(SNIPPETS, 'tail.html'))
  print_html basename, html
end

def print_html(basename, html)
  out = File.join(WWW_DIR, basename + '.html')
  puts out
  File.open(out, 'w+') { |f| f.puts html }
  File.open('tmp.html', 'w+') { |f| f.puts html } if basename == 'music'
  puts `tidy -iqm -w 0 #{out} 2>&1`
end

def music_html
  music = Dir[File.join(MEDIA_DIR, 'music', '*')].sort.reverse
  html = File.read(File.join(SNIPPETS, 'head.html'))
  html += nav 'music'
  music.each do |dir|
    date = File.basename(dir).split('_')[0]
    html += "<div class='post' id='#{date}'>"
    title = File.basename(dir).split('_')[1..-1].join(' ')
    html += "<h1>#{title}</h1>"
    html += File.read(File.join(dir, 'README')).chomp.gsub("\n\n", '<p>').gsub("\n", '<br>') + '<p>'
    cover = File.join(MEDIA_URL, dir.sub(MEDIA_DIR, ''), 'cover.jpeg')
    html += "<img class='cover' src='#{cover}' alt='cover'>"
    html += '<table>'
    copyrights_file = File.join(dir, 'copyrights')
    copyrights = File.readlines(copyrights_file).collect { |l| l.chomp } if File.exist? copyrights_file
    Dir[File.join(dir, '*mp3')].each_with_index do |mp3, _i|
      mp3 = File.join(MEDIA_URL, mp3.sub(MEDIA_DIR, ''))
      name = File.basename(mp3, '.mp3')[3..-1]
      # name += " &copy;#{copyrights[i]}" if copyrights
      html += '<tr>'
      html += "<td>
        <audio controls>
        <source src='#{mp3}' type='audio/mpeg'>
        </audio>
        </td>"
      html += "<td>#{name}</td>"
      html += '</tr>'
    end
    html += '</table>'
    bc = if File.exist?(File.join(dir, 'bandcamp'))
           File.read(File.join(dir, 'bandcamp')).chomp
         else
           "https://pdp8.bandcamp.com/album/#{title.gsub(' ', '-')}"
         end
    html += "<p>Bandcamp: <a href='#{bc}'>#{bc}</a>"
    html += '</div>'
    html += '<hr>'
  end
  html += '<p>&copy; pdp8 <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>'
  html += File.read(File.join(SNIPPETS, 'tail.html'))
  print_html 'music', html
end

def video_html
  videos = Dir[File.join(MEDIA_DIR, 'videos', '*')].sort.reverse
  html = File.read(File.join(SNIPPETS, 'head.html'))
  html += nav 'videos'
  videos.each_with_index do |dir, _i|
    date = File.basename(dir).split('_')[0]
    html += "<div class='post' id='#{date}'>"
    title = File.basename(dir).split('_')[1..-1].join(' ')
    html += "<h1>#{title}</h1>"
    txt = File.read(File.join(dir, 'README'))
    txt = txt.gsub(/(http\S*)/, '<a href="\1">\1</a>')
    lines = txt.split("\n")
    html += lines.shift + '<p>'

    mp4 =   File.join(MEDIA_URL, 'videos', File.basename(dir), title.gsub(' ', '_') + '.mp4')
    webm = File.join(MEDIA_URL, 'videos', File.basename(dir), title.gsub(' ', '_') + '.webm')
    poster = File.join(MEDIA_URL, 'videos', File.basename(dir), 'poster.png')

    html += "<video controls poster='#{poster}'>
        <source src='#{webm}' type='video/webm'>
        <source src='#{mp4}' type='video/mp4'>
        </video><p>
        "
    html += lines.join('<br>')
    html += '</div>'
    html += '<hr>'
  end
  html += '<p>&nbsp;&copy; pdp8 <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>'
  html += File.read(File.join(SNIPPETS, 'tail.html'))
  print_html 'videos', html
end

music_html
video_html

%w[about code pictures contact].each do |basename|
  file_html basename
end

last = (Dir[File.join(MEDIA_DIR, 'music', '*')] + Dir[File.join(MEDIA_DIR, 'videos', '*')]).sort_by { |d|
  File.basename(d)
}.last.split('/')[-2] + '.html'
puts `cp "#{File.join(WWW_DIR, last)}" "#{File.join(WWW_DIR, 'index.html')}"`

[
  'pdp8.png',
  '540px-PDP-8_.jpg',
  'style.css',
  'slideshow.js',
  'robots.txt'
].each { |f| puts `rsync -av "#{File.join(SNIPPETS, f)}" "#{WWW_DIR}"` }