from __main__ import *
import posixpath

__all__ = ['markup_neighbors', 'auto_neighbors']

def get_title(full_name, meta):
    entry_text = load(full_name)
    entry_meta = {'name' : full_name, 
                  'outer_name' : meta['name']}
    entry_text = markup(entry_text, entry_meta)
    return entry_meta.get('title', 'Untitled')

def auto_neighbors(before=True, search="[_insert_html _page]"):
    import __main__
    if before:
        replacement = '[neighbors]' + search
    else:
        replacement = search + '[neighbors]'

    __main__.page_markup = __main__.page_markup.replace(search, replacement)

def markup_neighbors(text, meta):
    if meta.has_key('outer_name'): return u''
    if not meta['name'].split("/")[-1].startswith('0'):
        return u''

    location = meta['name']
    if '/' in location:
        parent_location = posixpath.split(location)[0]
    else:
        parent_location = ''
    names = [full_name for name, full_name in list_names(parent_location)
        if name.startswith('0')]
    names.sort()

    try:
        this_entry = names.index(location)
    except:
        return u'<!-- entry not found in list_names() %s %r %r -->' % (names, location, parent_location)

    #return u'len(names)=%d this_entry=%d' % (len(names), this_entry)
    result = []
    if this_entry != 0:
        name = names[this_entry - 1]
        t = '[html ' + get_title(name, meta) + ']'
        result.append('[link [page ' + name + u'] \xab ' + t + ']')
#    else:
#        result.append("(No older entry)")

    result.append('[link [page ' + parent_location + '] Newest entries]')

    if this_entry + 1 < len(names):
        name = names[this_entry + 1]
        t = '[html ' + get_title(name, meta) + ']'
        result.append('[link [page ' + name + u'] ' + t + u' \xbb]')
#    else:
#        result.append('(no newer entry)')
    
    return markup('[line ' + " | ".join(result) + '][line]', meta, False)
    
# vim:sts=4:et:sw=4: