# -*- coding: iso-8859-1 -*-
"""
    MoinMoin - fullsearch action

    This is the backend of the search form. Search pages and print results.
    
    @copyright: 2001 by Jürgen Hermann <jh@web.de>
    @license: GNU GPL, see COPYING for details.
"""

from MoinMoin.Page import Page
from MoinMoin import wikiutil
from MoinMoin.util import MoinMoinNoFooter


def isTitleSearch(request):
    """ Return True for title search, False for full text search 
    
    When used in FullSearch macro, we have 'titlesearch' parameter with
    '0' or '1'. In standard search, we have either 'titlesearch' or
    'fullsearch' with localized string. If both missing, default to
    True (might happen with Safari).
    """
    try:
        return int(request.form['titlesearch'][0])
    except ValueError:
        return True
    except KeyError:
        return 'fullsearch' not in request.form


def execute(pagename, request, fieldname='value', titlesearch=0):
    _ = request.getText
    titlesearch = isTitleSearch(request)

    # context is relevant only for full search
    if titlesearch:        
        context = 0      
    else:
        context = int(request.form.get('context', [0])[0])        
    
    # Get other form parameters
    needle = request.form.get(fieldname, [''])[0]
    case = int(request.form.get('case', [0])[0])
    regex = int(request.form.get('regex', [0])[0]) # no interface currently

    max_context = 1 # only show first `max_context` contexts XXX still unused

    # check for sensible search term
    striped = needle.strip()
    if len(striped) == 0:
        err = _('Please use a more selective search term instead '
                'of {{{"%s"}}}') % needle
        # send http headers
        request.http_headers()
        Page(request, pagename).send_page(request, msg=err) 
        return

    # search the pages
    from MoinMoin import search
    query = search.QueryParser(case=case, regex=regex,
                               titlesearch=titlesearch).parse_query(needle)
    results = search.searchPages(request, query)

    # directly show a single hit
    # XXX won't work with attachment search
    # improve if we have one...
    if len(results.hits) == 1:
        page = results.hits[0]
        if not page.attachment: # we did not find an attachment
            page = Page(request, page.page_name)
            # TODO: remove escape=0 in 2.0
            url = page.url(request, querystr={'highlight': query.highlight_re()},
                           escape=0)
            request.http_redirect(url)
            raise MoinMoinNoFooter

    # send http headers
    request.http_headers()

    # This action generate data using the user language
    request.setContentLanguage(request.lang)

    # Setup for type of search
    if titlesearch:
        title = _('Title Search: "%s"')
        results.sortByPagename()
    else:
        title = _('Full Text Search: "%s"')
        results.sortByWeight() 

    wikiutil.send_title(request, title % needle, form=request.form,
                        pagename=pagename)
    
    # Start content (important for RTL support)
    request.write(request.formatter.startContent("content"))

    # First search stats
    request.write(results.stats(request, request.formatter))

    # Then search results
    info = not titlesearch
    if context:
        output = results.pageListWithContext(request, request.formatter, info=info,
                                             context=context)
    else:
        output = results.pageList(request, request.formatter, info=info)        
    request.write(output)

    # End content and send footer
    request.write(request.formatter.endContent())
    wikiutil.send_footer(request, pagename)

