+require 'page'
+require 'store'
+
+class Navigator
+ def initialize(store)
+ @store = store
+ end
+
+ def write_atoz_pages
+ atoz_counts = {}
+
+ ('A'..'Z').each do |letter|
+ atoz_counts[letter] = write_authors_starting_with(letter)
+ end
+
+ content = '<table><tr><th>Author</th><th>Books</th></tr>'
+ ('A'..'Z').each do |letter|
+ content += ' <tr><td><a href="../atoz/output_' + letter + '.html">Starting with ' + letter + '</a></td><td>' + atoz_counts[letter].to_s + '</td></tr>'
+ end
+ page = Page.new(@store)
+ page.output_dir = 'atoz'
+ page.special = content
+ page.up = ['../output/index.html', 'Up']
+
+ page.write_html( [] )
+ end
+
+ def write_authors_starting_with(letter)
+ book_ids = @store.query_books_by_author(letter + '%')
+ puts 'Authors starting with "' + letter + '": ' + book_ids.length.to_s() + ' books.'
+
+ page = Page.new(@store)
+ if 'A' != letter
+ page.back = ['../atoz/output_' + (letter.ord - 1).chr + '.html', 'Prev']
+ end
+ if 'Z' != letter
+ page.forward = ['../atoz/output_' + (letter.ord + 1).chr + '.html', 'Next']
+ end
+ page.output_dir = 'atoz'
+ page.index_file = 'output_' + letter + '.html'
+ page.title = "Authors starting with '" + letter + "'"
+ page.up = ['../atoz/index.html', 'Up']
+
+ page.write_html(book_ids)
+ return book_ids.length
+ end
+
+ def write_series_for_age(age)
+ series_infos = []
+
+ series_ids = @store.query_series_by_age(age)
+
+ series_ids.each do |id|
+ series = @store.load_series(id)
+ book_ids = @store.query_books_by_series_id(id)
+ if nil != book_ids and book_ids.length > 0
+ series_infos.push( [series, book_ids] )
+ end
+ end
+
+ for idx in 0 .. (series_infos.length - 1) do
+ #puts series.descr + ': ' + book_ids.length.to_s + ' books.'
+
+ back = nil
+ fwd = nil
+
+ if idx > 0
+ back = series_infos[idx-1]
+ end
+ if (idx + 1) < series_infos.length
+ fwd = series_infos[idx+1]
+ end
+
+ cur = series_infos[idx]
+ series = cur[0]
+ book_ids = cur[1]
+
+ page = Page.new(@store)
+ if nil != back
+ page.back = [back[0].key + '.html', 'Back']
+ end
+ if nil != fwd
+ page.forward = [fwd[0].key + '.html', 'Forward']
+ end
+ page.output_dir = 'series/series_' + age
+ page.index_file = series.key + '.html'
+ page.title = 'Series “' + series.descr + '” (' + book_ids.length.to_s + ' books)'
+ page.up = ['index.html', 'Up']
+
+ page.write_html(book_ids)
+ end
+
+ content = '<h1>“' + age + '” Series</h1>'
+ content += '<p><table><tr><th>Author</th><th>Series</th><th>Genre</th><th>Books</th></tr>'
+ series_infos.each do |cur|
+ series = cur[0]
+ book_ids = cur[1]
+
+ author = series.grouping
+ letter = author[0]
+
+ content += ' <tr>'
+ content += '<td><a href="../../atoz/output_' + letter + '.html">' + author + '</a></td>'
+ content += '<td><a href="' + series.key + '.html">' + series.descr + '</a></td>'
+ content += '<td>' + series.genre + '</td>'
+ content += '<td>' + book_ids.length.to_s + '</td>'
+ content += '</tr>'
+ end
+ content += '</table></p>'
+ page = Page.new(@store)
+ page.output_dir = 'series/series_' + age
+ page.special = content
+ page.up = ['../index.html', 'Up']
+ page.write_html( [] )
+
+ return series_infos.length
+ end
+
+ def write_series_listing
+ ages = ['beginner', 'junior', 'ya', 'adult']
+ series_counts = {}
+
+ ages.each do |age|
+ puts 'Series for "' + age + '" readers...'
+
+ series_counts[age] = write_series_for_age(age)
+ end
+
+ content = '<h1>Browse Books By Series</h1>'
+ content += '<p>'
+ content += '<table><tr><th>Age</th><th>Number of Series</th></tr>'
+ ages.each do |age|
+ content += '<tr><td><a href="series_' + age + '/index.html">' + age + '</a></td><td>' + series_counts[age].to_s + '</td></tr>'
+ end
+ content += '</table></p>'
+ page = Page.new(@store)
+ page.output_dir = 'series'
+ page.special = content
+ page.up = ['../output/index.html', 'Up']
+ page.write_html( [] )
+ end
+end