# $URL$
# $Id$

drilldownFieldNames = {
    'drilldown.norm.date.year':       {'en':'Year', 'nl':'Jaar'},
    'drilldown.norm.date.decennium':  {'en':'Decennium', 'nl':'Decennium'},
    'drilldown.norm.date.centennium': {'en':'Centennium', 'nl':'Centennium'},

    'drilldown.norm.name.oneinitial': {'en':'Name', 'nl':'Naam'},
    'drilldown.norm.name.lastname':   {'en':'Top 10 Names', 'nl':'Top 10 Namen'},

    'drilldown.meta.repository.id':   {'en':'Repository', 'nl':'Repository'},
    'drilldown.meta.repository.repositoryGroupId':   {'en':'Source', 'nl':'Bron'},

    'drilldown.mods.classification':   {'en':'Classification', 'nl':'Classificatie'},
    'drilldown.mods.genre':           {'en':'Genre', 'nl':'Genre'},
    'drilldown.mods.language.languageTerm': {'en':'Language', 'nl':'Taal'},
    'drilldown.mods.relatedItem.titleInfo.title': {'en':'Journal/series', 'nl':'Tijdschrift/reeks'},
    'drilldown.mods.subject.topic':   {'en':'Subject', 'nl':'Onderwerp'}
}

drilldownFields = [
#####
##### TP: (field, number, sorted)
##### number == 0: all items? 
    ('drilldown.mods.genre',                          0, True),
    ('drilldown.mods.subject.topic',                 10, True),
#####
    #('drilldown.mods.name.namePart', 20, False),
    #('drilldown.norm.name.oneinitial', 20, False),
    #('drilldown.meta.repository.id',                 10, False),
    ('drilldown.meta.repository.repositoryGroupId',  10, True),
    ('drilldown.mods.classification',                10, True),
    ('drilldown.mods.language.languageTerm',         10, True),
    ('drilldown.mods.relatedItem.titleInfo.title',   10, True)
]

drilldownFieldsNoMultiLevel = []
drilldownFieldsNoMultiLevel.extend(drilldownFields)
drilldownFieldsNoMultiLevel.insert(0, ('drilldown.norm.name.lastname',   10, False))
drilldownFieldsNoMultiLevel.insert(0, ('drilldown.norm.date.centennium', 10, False))

groupName = {
    'ir-uvt-nl': {'en': 'Tilburg University Repository', 'nl': 'Tilburg University Repository'},
    'kuleuven-be': {'en': 'EO: KU Leuven', 'nl': 'EO: KU Leuven'},
    'lse-ac-uk': {'en': 'EO: London School of Economics', 'nl': 'EO: London School of Economics'},
    'opc-uvt-nl': {'en': 'Catalogue', 'nl': 'Catalogus'},
    'repec-org': {'en': 'RePEc', 'nl': 'RePEc'},
    'repub-eur-nl': {'en': 'EO: Erasmus University Rotterdam', 'nl': 'EO: Erasmus Universiteit Rotterdam'},
    'tilburguniversity-nl': {'en': 'EO: Tilburg University', 'nl': 'EO: Universiteit van Tilburg'},
    'ulb-ac-be': {'en': 'EO: Universite Libre de Bruxelles', 'nl': 'EO: Universite Libre de Bruxelles'},
    'unimaas-nl': {'en': 'EO: Maastricht University', 'nl': 'EO: Universiteit Maastricht'},
}

space = "             "  

def fieldAndTermSplit(fieldAndTerm):
    return fieldAndTerm.split(':', 1)

def fieldAndTermJoin(field, term):
    return '%s:%s' % (field, term)

def shrink(aString, maxLength=160):
    if len(aString) > maxLength:
        return aString[:maxLength] + '...'
    return aString

def createDrilldownQuery(drilldownArgs, httpQuery):
    newArguments = [('query', httpQuery)]
    for existing in drilldownArgs:
        newArguments.append(('drilldown', existing))
    return urlencode(newArguments)

def displayLabel(label):
    return '<h5>%s</h5>' % label

def displayTerm(term, fieldName, language, maxLength=25):
    if fieldName == 'drilldown.mods.genre': term = term.replace('info:eu-repo/semantics/', '')
    elif (fieldName == 'drilldown.meta.repository.repositoryGroupId'):
        term = groupName.get(term, {'en':term, 'nl':term})[language]
    return shrink(term, maxLength)

def displayDrilldownFields(total, bitMatrixRow, httpQuery, arguments, language):
    yield '\n' + space + ' <div id="drilldownfields">'

    if total < 500000:
####### TP: result set is not too large, multilevel results will be calculated   
        multilevelResults = any.multiLevelDrilldown(bitMatrixRow, ['date', 'author'])
        for (fieldName, levelField), termCounts in multilevelResults:
            label = drilldownFieldNames.get(levelField, {'en':levelField, 'nl':levelField})[language]
            yield '\n' + space + '  %s' % displayLabel(label)
            yield '\n' + space + '  <ul>'
            for term, count in termCounts:
                drilldownArgs = set(arguments.get('drilldown', []) + [fieldAndTermJoin(levelField, term)])
                query = createDrilldownQuery(drilldownArgs, httpQuery)
                yield '\n' + space + '   <li><a href="?%s" title="%s">%s: %s</a></li>' % (query, escapeHtml(term), displayTerm(term, fieldName, language), count)
            yield '\n' + space + '  </ul>'
	fields = drilldownFields
    else:
####### TP: result set is too large, only one level of the multilevel facests will be calculated.
        fields = drilldownFieldsNoMultiLevel
#        fields = drilldownFields

    drilldownResults = any.drilldown(bitMatrixRow, fields)
    drilldownResultsAsDict = dict(drilldownResults)
    for fieldName, number, sorted in fields:
        termCounts = drilldownResultsAsDict.get(fieldName,[])
        label = drilldownFieldNames.get(fieldName, {'en':fieldName, 'nl':fieldName})[language]
        if termCounts == []:
            continue
        yield '\n' + space + '  %s' % displayLabel(label)
        yield '\n' + space + '  <ul>'
        for term, count in termCounts:
            drilldownArgs = set(arguments.get('drilldown', []) + [fieldAndTermJoin(fieldName, term)])
            query = createDrilldownQuery(drilldownArgs, httpQuery)
            yield '\n' + space + '   <li><a href="?%s" title="%s">%s: %s</a></li>' % (query, escapeHtml(term), displayTerm(term, fieldName, language), count)
        yield '\n' + space + '  </ul>'
    yield """
%(space)s </div>
%(space)s <! -- close drilldownfields -->""" % {'space': space}

#def main(hits, httpQuery, arguments, path='', *args, **kwargs):
def main(total, bitMatrixRow, httpQuery, arguments, path='', *args, **kwargs):
    language = path.startswith('/en/') and 'en' or 'nl'

    yield '\n' + space + '<div id="drilldownresults">'

    selectedFacets = arguments.get('drilldown', [])
    if selectedFacets:
        yield '\n' + space + ' <div id="drilldownselection">'
        yield '\n' + space + '  <h3>%s</h3>' % {'nl':'Geselecteerde facetten', 'en':'Selected Facets'}[language]
        yield '\n  <ul class="selectedFacets">'
        for drilldownItem in selectedFacets:
            fieldName, value = fieldAndTermSplit(drilldownItem)
            drilldownArgs = set(selectedFacets)
            drilldownArgs.remove(drilldownItem)

            label = drilldownFieldNames.get(fieldName, {'en':fieldName, 'nl':fieldName})[language]

            query = createDrilldownQuery(drilldownArgs, httpQuery)
            yield '\n' + space + '   <li><a href="?%s" title="%s">[-] %s: %s</a></li>' % (query, escapeHtml(value), label, escapeHtml( displayTerm(value, fieldName, language)))
        yield """
%(space)s  </ul>
%(space)s </div>
%(space)s <!-- close drilldownselection -->""" % {'space': space}

    if total > 0:
        yield displayDrilldownFields(total, bitMatrixRow, httpQuery, arguments, language)