from zope.interface import implements
from zope.component import getUtility

from Products.MetadataPortal.interfaces import iMDPortal, IWaramu
from Products.MetadataPortal.waramulib.interfaces import IAttachable
from Products.MetadataPortal.utils import translate, getLanguage

class Attachments(object):
    implements(IAttachable)

    def __init__(self, context):
        self.context = context

    def view(self):
        r = u'<label for="%s">%s</label>' % ('attachments', translate(self, 'Files', getLanguage(self.context.request)))
        if self.context.getNOfAttachments() > 0:
            pr = getUtility(iMDPortal, context=self.context)
            w = getUtility(IWaramu, context=self.context).__of__(pr)
            loa = w.listAttachments(self.context.getId())
            ats = loa.items()
            ats.sort()
            r += '<ol>'
            wurl = w.getWaramuWebUrl()
            for aid, fname in ats:
                r += '<li><a href="%sdownloader?resourceId=%s&attachmentId=%s">%s</a></li>' % (wurl, self.context.getId(), aid, fname)
            r+= '</ol>'
        else:
            r += translate(self, 'No files available', getLanguage(self.context.request))
        return r

    def edit(self):
        r = u'<label for="%s">%s</label>' % ('attachments', 'Files')
        r += '<div id="filesList">\n'
        if not self.context.isNew():
            if self.context.getNOfAttachments() > 0:
                # fetch a list of attachments
                pr = getUtility(iMDPortal, context=self.context)
                w = getUtility(IWaramu, context=self.context).__of__(pr)
                loa = w.listAttachments(self.context.getId())
                ats = loa.items()
                ats.sort()

                for aid, fname in ats:
                    r += '<div id="file_'+str(aid)+'" onclick="javascript:warnFileRemoval(\'file_'+str(aid)+'\')">'
                    r += '<span class="closeCross">X</span>'
                    r += '&nbsp;<span>'+fname+'</span>'
                    r += '</div>'
        r += '</div>'
        r += '<div>\n\t<a href="javascript:startUpload()">'+translate(self, "add a file", getLanguage(self.context.request))+'</a>\n</div>'
        return r