from django.conf import settings
import lucene

lucene.initVM(lucene.CLASSPATH)

STORE = lucene.SimpleFSDirectory(lucene.File(settings.INDEX_PATH))
ANALYZER = lucene.PerFieldAnalyzerWrapper(lucene.StandardAnalyzer(lucene.Version.LUCENE_CURRENT))
ANALYZER.addAnalyzer("tags", lucene.FrenchAnalyzer(lucene.Version.LUCENE_CURRENT))
ANALYZER.addAnalyzer("title", lucene.FrenchAnalyzer(lucene.Version.LUCENE_CURRENT))
ANALYZER.addAnalyzer("abstract", lucene.FrenchAnalyzer(lucene.Version.LUCENE_CURRENT))
ANALYZER.addAnalyzer("all", lucene.FrenchAnalyzer(lucene.Version.LUCENE_CURRENT))

def get_writer():
    lucene.getVMEnv().attachCurrentThread()
    return lucene.IndexWriter(STORE, ANALYZER, False, lucene.IndexWriter.MaxFieldLength.UNLIMITED)

def get_searcher():
    lucene.getVMEnv().attachCurrentThread()
    return lucene.IndexSearcher(STORE)

def get_query_parser(field):
    queryParser = lucene.QueryParser(lucene.Version.LUCENE_30, field, lucene.FrenchAnalyzer(lucene.Version.LUCENE_30))
    queryParser.setDefaultOperator(lucene.QueryParser.Operator.AND)
    return queryParser
