import glob
import os
import zipfile
import sys
import re
from BeautifulSoup import BeautifulSoup as BS

def head(styles):
    title = '<title>{{=response.title or request.application}}</title>'
    items = '\n'.join(["{{response.files.append(URL(request.application,'static','%s'))}}" % (style) for style in styles])
    loc="""<style>
div.flash {
    position: absolute;
    float: right;
    padding: 10px;
    top: 0px;
    right: 0px;
    opacity: 0.75;
    margin: 10px 10px 10px 10px;
    text-align: center;
    clear: both;
    color: #fff;
    font-size: 11pt;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    background: black;
    border: 2px solid #fff;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    z-index: 2;
}
div.error {
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    background-color: red;
    color: white;
    padding: 3px;
    border: 1px solid #666;
}
</style>"""
    return "\n%s\n%s\n{{include 'web2py_ajax.html'}}\n%s" % (title,items,loc)

def content():
    return """<div class="flash">{{=response.flash or ''}}</div>{{include}}"""


def process(folder):
    soup = BS(open(os.path.join(folder,'index.html'),'rb').read())
    styles = [x['href'] for x in soup.findAll('link')]
    soup.find('head').contents=BS(head(styles))
    try:
        soup.find('h1').contents=BS('{{=response.title or request.application}}')
        soup.find('h2').contents=BS("{{=response.subtitle or '=response.subtitle'}}")
    except:
        pass                
    for match in (soup.find('div',id='menu'),
              soup.find('div',{'class':'menu'}),
              soup.find('div',id='nav'),
              soup.find('div',{'class':'nav'})):
        if match:
            match.contents=BS('{{=MENU(response.menu)}}')
            break
    done=False
    for match in (soup.find('div',id='content'),
              soup.find('div',{'class':'content'}),
              soup.find('div',id='main'),
              soup.find('div',{'class':'main'})):
        if match:
            match.contents=BS(content())
            done=True
            break
    if done:
        page = soup.prettify()        
        page = re.compile("\s*\{\{=response\.flash or ''\}\}\s*",re.MULTILINE)\
            .sub("{{=response.flash or ''}}",page)
        print page
    else:
        raise Exception, "Unable to convert"

if __name__=='__main__':
    if len(sys.argv)<2:
        print """USAGE:
1) start a new web2py application
2) Download a sample free layout from the web into the static/ folder of 
   your web2py application (make sure a sample index.html is there)
3) run this script with

   python layout_make.py /path/to/web2py/applications/app/static/  
     > /path/to/web2py/applications/app/views/layout.html
"""
    elif not os.path.exists(sys.argv[1]):
        print 'Folder %s does not exist' % sys.argv[1]
    else:
        process(sys.argv[1])