# -*- coding: utf-8 -*-
require 'rails-latex/erb_latex'
require 'ostruct'
require 'pathname'
require 'logger'

Rails=OpenStruct.new(:root => TMP_DIR=File.expand_path("../tmp",__FILE__), :logger => Logger.new(STDERR))

class TestLatexToPdf < Minitest::Test
  def setup
    super
    FileUtils.rm_rf("#{TMP_DIR}/tmp/rails-latex")
  end

  def teardown
    super
    LatexToPdf.instance_eval { @config=nil }
  end

  def write_pdf
    FileUtils.mkdir_p(TMP_DIR)
    pdf_file=File.join(TMP_DIR,'out.pdf')
    File.delete(pdf_file) if File.exist?(pdf_file)
    File.open(pdf_file,'wb') do |wio|
      wio.write(yield)
    end
    pdf_file
  end

  def test_escape
    assert_equal "dsf \\textless{} \\textgreater{} \\& ! @ \\# \\$ \\% \\textasciicircum{} \\textasciitilde{} \\textbackslash{} fds", LatexToPdf.escape_latex('dsf < > & ! @ # $ % ^ ~ \\ fds')
    LatexToPdf.instance_eval{@latex_escaper=nil}
    require 'redcloth'
    assert_equal "dsf \\textless{} \\textgreater{} \\& ! @ \\# \\$ \\% \\^{} \\~{} \\textbackslash{} fds", LatexToPdf.escape_latex('dsf < > & ! @ # $ % ^ ~ \\ fds')
  end

  def test_broken_doc_halt_on_error
    begin
      LatexToPdf.generate_pdf(IO.read(File.expand_path('../test_broken_doc.tex',__FILE__)),{})
      fail "Should throw exception"
    rescue => e
      assert(/^pdflatex failed: See / =~ e.message)
    end
  end

  def test_broken_doc_overriding_halt_on_error
    pdf_file=write_pdf do
      LatexToPdf.generate_pdf(IO.read(File.expand_path('../test_broken_doc.tex',__FILE__)),{arguments: []})
    end
    assert_equal "file with error\n\n1\n\n\f", `pdftotext #{pdf_file} -`
  end

  def test_generate_pdf_one_parse
    pdf_file=write_pdf do
      LatexToPdf.generate_pdf(IO.read(File.expand_path('../test_doc.tex',__FILE__)),{})
    end
    assert_equal "The last page is ??.\n\n1\n\n\f", `pdftotext #{pdf_file} -`

    assert_equal ["#{TMP_DIR}/tmp/rails-latex/input.log"], Dir["#{TMP_DIR}/tmp/rails-latex/*.log"]
  end

  def test_generate_pdf_two_parse
    pdf_file=write_pdf do
      LatexToPdf.config[:parse_twice]=true
      LatexToPdf.generate_pdf(IO.read(File.expand_path('../test_doc.tex',__FILE__)),{})
    end
    assert_equal "The last page is 1.\n\n1\n\n\f", `pdftotext #{pdf_file} -`

    assert_equal ["#{TMP_DIR}/tmp/rails-latex/input.log"], Dir["#{TMP_DIR}/tmp/rails-latex/*.log"]
  end

  def test_generate_pdf_parse_runs
    pdf_file=write_pdf do
      LatexToPdf.config[:parse_runs]=2
      LatexToPdf.generate_pdf(IO.read(File.expand_path('../test_doc.tex',__FILE__)),{})
    end
    assert_equal "The last page is 1.\n\n1\n\n\f", `pdftotext #{pdf_file} -`

    assert_equal ["#{TMP_DIR}/tmp/rails-latex/input.log"], Dir["#{TMP_DIR}/tmp/rails-latex/*.log"]
  end

  def test_doc_log_written
    begin
      LatexToPdf.generate_pdf(IO.read(File.expand_path('../test_doc.tex',__FILE__)),{})
      assert_equal ["#{TMP_DIR}/tmp/rails-latex/input.log"], Dir["#{TMP_DIR}/tmp/rails-latex/*.log"]
      assert( File.read("#{TMP_DIR}/tmp/rails-latex/input.log") =~ /entering extended mode/ )
    end
  end

end