#!/usr/bin/env python

import envoy
import glob
import os


def main(chapters=[], epub=False, pdf=False, html=False, mobi=False, pandoc_epub=False):
    if not os.path.isdir('output'):
        os.mkdir('output')
    else:
        output_files = glob.glob('output/*')
        for f in output_files:
            run('rm {}'.format(f))

    chapter_dirs = [
        'blockcode',
        'ci',
        'cluster',
        'contingent',
        'crawler',
        'dagoba',
        'data-store',
        'event-web-framework',
        'flow-shop',
        'functionalDB',
        'image-filters',
        'interpreter',
        'modeller',
        'objmodel',
        'ocr',
        'pedometer',
        'same-origin-policy',
        'sampler',
        'spreadsheet',
        'static-analysis',
        'template-engine',
        'web-server',
    ]
    if len(chapters) > 0:
        chapter_dirs = [
            chapter_dir
            for chapter_dir in
            chapter_dirs
            if chapter_dir in chapters
        ]

    chapter_markdowns = [
        './' + chapter_dir + '/' + chapter_dir + '.markdown'
        for chapter_dir in
        chapter_dirs
    ]

    chapter_markdowns_exist = [
        envoy.run('test -f ' + chapter_markdown).status_code
        for chapter_markdown in
        chapter_markdowns
    ]

    process_chapters = [
        chapter_markdown
        for chapter_markdown, process in
        zip(chapter_markdowns, chapter_markdowns_exist)
        if process == 0
    ]

    chapter_names = [
        getbasename(chapter)
        for chapter in
        chapter_dirs
    ]

    image_paths = [
        './blockcode/blockcode-images',
        './ci/ci-images',
        './cluster/cluster-images',
        './contingent/contingent-images',
        './crawler/crawler-images',
        './data-store/data-store-images',
        './flow-shop/flow-shop-images',
        './functionalDB/functionalDB-images',
        './image-filters/image-filters-images',
        './interpreter/interpreter-images',
        './modeller/modeller-images',
        './objmodel/objmodel-images',
        './ocr/ocr-images',
        './pedometer/pedometer-images',
        './same-origin-policy/same-origin-policy-images',
        './sampler/sampler-images',
        './spreadsheet/spreadsheet-images',
        './web-server/web-server-images',
        ]

    run('cp -r minutiae/pdf/ tex')

    with open('tex/500L.tex', 'w') as out:
        with open('tex/500L.template.tex') as template:
            lines = template.readlines()
            for line in lines:
                if 'chapterchapterchapter' in line:
                    out.write(
                        '\n'.join(
                            '\include{%s}\n' % (chapter_name)
                            for chapter_name in chapter_names
                            )
                        )
                else:
                    out.write(line)

    if pdf:
        for imgpath in image_paths:
            run('cp -a {imgpath} tex/'.format(imgpath=imgpath))
        for chapter_markdown in process_chapters:
            pandoc_cmd(chapter_markdown)
        build_pdf()

    if epub:
        for imgpath in image_paths:
            run('cp -a {imgpath} epub/'.format(imgpath=imgpath))
        run('cp minutiae/html/introduction.md epub/introduction.markdown')
        build_epub(process_chapters, pandoc_epub)

    if mobi and not epub:
        print 'Cannot build .mobi; depends on .epub.'
        print 'Use --epub --mobi to build .mobi file.'
    elif mobi:
        build_mobi()

    if html:
        for imgpath in image_paths:
            run('cp -a {imgpath} html/content/pages/'.format(imgpath=imgpath))
        run('cp minutiae/html/introduction.md html/content/pages/.')
        build_html(process_chapters)
        for imgpath in image_paths:
            run('cp -a {imgpath} html/output/pages/'.format(imgpath=imgpath))

def build_pdf():
    os.chdir('tex')
    run('pdflatex -interaction nonstopmode 500L')
    os.chdir('..')
    run('mv tex/500L.pdf output/')


def build_epub(chapter_markdowns, pandoc_epub):
    basenames = [
        os.path.splitext(
            os.path.split(chapter_markdown)[1]
        )[0] + '.markdown'
        for chapter_markdown in chapter_markdowns
    ]
    temp = 'python _build/preprocessor.py --chapter {chapnum} --output=epub/{basename}.markdown.1 --latex {md}'
    for i, markdown in enumerate(chapter_markdowns):
        basename = os.path.splitext(os.path.split(markdown)[1])[0]
        run(temp.format(md=markdown, basename=basename, chapnum=i+1))
    os.chdir('epub')
    temp = '../_build/increaseheaders.sh {basename}.markdown.1 {basename}.markdown {chapnum}'
    for i, markdown in enumerate(chapter_markdowns):
        basename = os.path.splitext(os.path.split(markdown)[1])[0]
        run(temp.format(md=markdown, basename=basename, chapnum=i+1))
    pandoc_path = 'pandoc'
    cmd = '{pandoc} --chapters -S -f markdown+mmd_title_block --highlight-style=kate -o 500L.epub epubtitle.txt introduction.markdown {markdowns}'
    if pandoc_epub:
        run(cmd.format(pandoc=pandoc_path, markdowns=' '.join(basenames)))
        print cmd.format(pandoc=pandoc_path, markdowns=' '.join(basenames))
#    import subprocess as sp
#    output = ' '.join(open('image-list.txt').read().splitlines())
#    print 'zip 500L.epub META-INF mimetype nav.xhtml toc.ncx stylesheet.css content.opf ' + output
#    sp.check_output(
#        'zip 500L.epub META-INF mimetype nav.xhtml toc.ncx stylesheet.css content.opf ' + output,
#        shell=True)
#    if os.path.isdir('tmp-epub-contents'):
#        run('rm -r tmp-epub-contents')
#    os.mkdir('tmp-epub-contents')
#    sp.check_output(
#        'unzip 500L.epub -d tmp-epub-contents/',
#        shell=True,
#    )
#    sp.check_output(
#        'rsync -a tmp-epub-contents/* ./',
#        shell=True
#    )
#    run('rm -r tmp-epub-contents')
    run('cp 500L.epub ../output/500L.epub')
    os.chdir('..')


def build_mobi():
    run('ebook-convert output/500L.epub output/500L.mobi')


def build_html(chapter_markdowns):
    run('mkdir -p html/content/pages')
    temp = 'python _build/preprocessor.py --chapter {chap} --html-refs --output={md}.1 --latex {md}'
    temp2 = 'pandoc --csl=minutiae/pdf/ieee.csl --mathjax -t html -f markdown+citations -o html/content/pages/{basename}.md {md}.1'
    temp3 = './_build/fix_html_title.sh html/content/pages/{basename}.md'
    for i, markdown in enumerate(chapter_markdowns):
        basename = os.path.splitext(os.path.split(markdown)[1])[0]
        run(temp.format(chap=i+1, md=markdown, basename=basename))
        run(temp2.format(md=markdown, basename=basename))
        run(temp3.format(md=markdown, basename=basename))
    os.chdir('html')
    run('make html')
    os.chdir('..')


def getbasename(chapter_markdown):
    import os
    basename = os.path.splitext(
        os.path.split(chapter_markdown)[1]
    )[0]
    return basename


def _pandoc_cmd(chapter_markdown):
    pandoc_path = 'pandoc'
    # tex/md because that's where the preprocessed markdowns end up
    temp = '{pandoc} -V chaptertoken={chaptertoken} -t latex --chapters -S -f markdown+mmd_title_block+tex_math_dollars --template=tex/chaptertemplate.tex --no-highlight -o tex/{basename}.tex.1 tex/{md}'
    basename = getbasename(chapter_markdown)
    result = temp.format(pandoc=pandoc_path, basename=basename, md=chapter_markdown, chaptertoken='s:' + basename)
    return result


def preprocessor_command(chapter_markdown):
    temp = 'python _build/preprocessor.py --output=tex/{basename}.markdown --markdown {md}'
    basename = getbasename(chapter_markdown)
    result = temp.format(basename=basename, md=chapter_markdown)
    print result
    return (result, basename)


def postprocessor_command(basename):
    temp = 'python _build/postprocessor.py --output=tex/{basename}.tex tex/{basename}.tex.1'
    return temp.format(basename=basename)


def pandoc_cmd(chapter_markdown):
    cmd, basename = preprocessor_command(chapter_markdown)
    result = envoy.run(cmd)
    new_chapter_markdown = basename + '.markdown'
    if result.status_code != 0:
        print result.std_err
    else:
        print result.std_out
    result = envoy.run(_pandoc_cmd(new_chapter_markdown))
    if result.status_code != 0:
        print result.std_err
    else:
        print result.std_out
    result2 = envoy.run(postprocessor_command(basename))
    return result2


def run(cmd):
    print cmd
    result = envoy.run(cmd)
    print result.std_out
    print result.std_err
    return result


if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('chapters', nargs='*')
    parser.add_argument('--epub', action='store_true', default=False)
    parser.add_argument('--mobi', action='store_true', default=False)
    parser.add_argument('--pdf', action='store_true', default=False)
    parser.add_argument('--html', action='store_true', default=False)
    parser.add_argument('--pandoc-epub', action='store_true', default=False)
    args = parser.parse_args()
    main(chapters=args.chapters, epub=args.epub, pdf=args.pdf, html=args.html, mobi=args.mobi, pandoc_epub=args.pandoc_epub)