import unittest
import pysal
from pysal.core.util.weight_converter import WeightConverter
from pysal.core.util.weight_converter import weight_convert
import tempfile
import os
import warnings


class test_WeightConverter(unittest.TestCase):
    def setUp(self):
        self.base_dir = pysal.examples.get_path('')
        test_files = ['arcgis_ohio.dbf', 'arcgis_txt.txt', 'ohio.swm',
                           'wmat.dat', 'wmat.mtx', 'sids2.gal', 'juvenile.gwt',
                           'geobugs_scot', 'stata_full.txt', 'stata_sparse.txt',
                           'spat-sym-us.mat', 'spat-sym-us.wk1']
        self.test_files = [pysal.examples.get_path(f) for f in test_files]
        dataformats = ['arcgis_dbf', 'arcgis_text', None, None, None, None, None,
                       'geobugs_text', 'stata_text', 'stata_text', None, None]
        ns = [88, 3, 88, 49, 49, 100, 168, 56, 56, 56, 46, 46]
        self.dataformats = dict(zip(self.test_files, dataformats))
        self.ns = dict(zip(self.test_files, ns))
        self.fileformats = [('dbf', 'arcgis_dbf'), ('txt', 'arcgis_text'), ('swm', None),
                            ('dat', None), ('mtx', None), ('gal', None), ('',
                                                                          'geobugs_text'),
                            ('gwt', None), ('txt', 'stata_text'), ('mat', None), ('wk1', None)]

    def test__setW(self):
        for f in self.test_files:
            with warnings.catch_warnings(record=True) as warn:
                # note: we are just suppressing the warnings here; individual warnings
                #       are tested in their specific readers
                warnings.simplefilter("always")
                wc = WeightConverter(f,
                                     dataFormat=self.dataformats[f])
            self.assertEqual(wc.w_set(), True)
            self.assertEqual(wc.w.n, self.ns[f])

    def test_write(self):
        for f in self.test_files:
            with warnings.catch_warnings(record=True) as warn:
                # note: we are just suppressing the warnings here; individual warnings
                #       are tested in their specific readers
                warnings.simplefilter("always")
                wc = WeightConverter(f,
                                     dataFormat=self.dataformats[f])

            for ext, dataformat in self.fileformats:
                if f.lower().endswith(ext):
                    continue
                temp_f = tempfile.NamedTemporaryFile(
                    suffix='.%s' % ext, dir=self.base_dir)
                temp_fname = temp_f.name
                temp_f.close()

                with warnings.catch_warnings(record=True) as warn:
                    # note: we are just suppressing the warnings here; individual warnings
                    #       are tested in their specific readers
                    warnings.simplefilter("always")
                    if ext == 'swm':
                        wc.write(temp_fname, useIdIndex=True)
                    elif dataformat is None:
                        wc.write(temp_fname)
                    elif dataformat in ['arcgis_dbf', 'arcgis_text']:
                        wc.write(temp_fname, dataFormat=dataformat,
                                 useIdIndex=True)
                    elif dataformat == 'stata_text':
                        wc.write(temp_fname, dataFormat=dataformat,
                                 matrix_form=True)
                    else:
                        wc.write(temp_fname, dataFormat=dataformat)

                with warnings.catch_warnings(record=True) as warn:
                    # note: we are just suppressing the warnings here; individual warnings
                    #       are tested in their specific readers
                    warnings.simplefilter("always")
                    if dataformat is None:
                        wnew = pysal.open(temp_fname, 'r').read()
                    else:
                        wnew = pysal.open(temp_fname, 'r', dataformat).read()

                if (ext in ['dbf', 'swm', 'dat', 'wk1', 'gwt'] or dataformat == 'arcgis_text'):
                    self.assertEqual(wnew.n, wc.w.n - len(wc.w.islands))
                else:
                    self.assertEqual(wnew.n, wc.w.n)
                os.remove(temp_fname)

    def test_weight_convert(self):
        for f in self.test_files:
            inFile =  f
            inDataFormat = self.dataformats[f]
            with warnings.catch_warnings(record=True) as warn:
                # note: we are just suppressing the warnings here; individual warnings
                #       are tested in their specific readers
                warnings.simplefilter("always")
                if inDataFormat is None:
                    in_file = pysal.open(inFile, 'r')
                else:
                    in_file = pysal.open(inFile, 'r', inDataFormat)
                wold = in_file.read()
                in_file.close()

            for ext, dataformat in self.fileformats:
                if f.lower().endswith(ext):
                    continue
                temp_f = tempfile.NamedTemporaryFile(
                    suffix='.%s' % ext, dir=self.base_dir)
                outFile = temp_f.name
                temp_f.close()
                outDataFormat, useIdIndex, matrix_form = dataformat, False, False
                if ext == 'swm' or dataformat in ['arcgis_dbf', 'arcgis_text']:
                    useIdIndex = True
                elif dataformat == 'stata_text':
                    matrix_form = True

                with warnings.catch_warnings(record=True) as warn:
                    # note: we are just suppressing the warnings here; individual warnings
                    #       are tested in their specific readers
                    warnings.simplefilter("always")
                    weight_convert(inFile, outFile, inDataFormat, outDataFormat, useIdIndex, matrix_form)

                with warnings.catch_warnings(record=True) as warn:
                    # note: we are just suppressing the warnings here; individual warnings
                    #       are tested in their specific readers
                    warnings.simplefilter("always")
                    if dataformat is None:
                        wnew = pysal.open(outFile, 'r').read()
                    else:
                        wnew = pysal.open(outFile, 'r', dataformat).read()

                if (ext in ['dbf', 'swm', 'dat', 'wk1', 'gwt'] or dataformat == 'arcgis_text'):
                    self.assertEqual(wnew.n, wold.n - len(wold.islands))
                else:
                    self.assertEqual(wnew.n, wold.n)
                os.remove(outFile)

if __name__ == '__main__':
    unittest.main()
