#!/usr/bin/env python

#  Copyright (c) 2005 Gavin E. Crooks <gec@threeplusone.com>
#
#  This software is distributed under the MIT Open Source License.
#  <http://www.opensource.org/licenses/mit-license.html>
#
#  Permission is hereby granted, free of charge, to any person obtaining a
#  copy of this software and associated documentation files (the "Software"),
#  to deal in the Software without restriction, including without limitation
#  the rights to use, copy, modify, merge, publish, distribute, sublicense,
#  and/or sell copies of the Software, and to permit persons to whom the
#  Software is furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included
#  in all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.
#

import unittest
from io import StringIO

from weblogo.seq import nucleic_alphabet, protein_alphabet
from weblogo.seq_io import clustal_io, fasta_io, plain_io

from . import data_stream

example_with_optional_comments = """
>SEQUENCE_1
;comment line 1 (optional)
MTEITAAMVKELRESTGAGMMDCKNALSETNGDFDKAVQLLREKGLGKAAKKADRLAAEG
LVSVKVSDDFTIAAMRPSYLSYEDLDMTFVENEYKALVAELEKENEERRRLKDPNKPEHK
IPQFASRKQLSDAILKEAEEKIKEELKAQGKPEKIWDNIIPGKMNSFIADNSQLDSKLTL
MGQFYVMDDKKTVEQVIAEKEKEFGGKIKIVEFICFEVGEGLEKKTEDFAAEVAAQL
>SEQUENCE_2
;comment line 1 (optional)
;comment line 2 (optional)
SATVSEINSETDFVAKNDQFIALTKDTTAHIQSNSLQSVEELHSSTINGVKFEEYLKSQI
ATIGENLVVRRFATLKAGANGVVNGYIHTNGRVGVVIAAACDSAEVASKSRDLLRQICMH
"""

example3 = """
>
AAAGTG
>
AAAGCG
>
TGCCCT
>
TGCCTT
"""

example4 = """
>
AAAGTG
>
AAAGCG

TGCCCT
>
TGCCTT
"""


class test_fasta_io(unittest.TestCase):
    def test_read(self):
        f = StringIO(fasta_io.example)
        seqs = fasta_io.read(f)
        # print seqs
        self.assertEqual(len(seqs), 3)
        self.assertEqual(seqs[0].description, "Lamprey GLOBIN V - SEA LAMPREY")
        self.assertEqual(seqs[0].name, "Lamprey")
        self.assertEqual(len(seqs[1]), 231)

    #    def test_read_long(self):
    #        f = data_stream("NC_000913.ffn")
    #        count = 0
    #        start = time.time()
    #        for s in seq_io.fasta_io.read_seq(f):
    #            count +=1
    #        end = time.time()
    #        t = end-start
    #
    #        self.assertEqual(count, 4243)
    #
    #        # Timing is 3s 1.67 GHz G4
    #        # print t

    def test_read_fail(self):
        f = StringIO(fasta_io.example)
        # Wrong alphabet
        self.assertRaises(ValueError, fasta_io.read, f, nucleic_alphabet)

    def test_parse_globin(self):
        # f = open_resource(__file__, "test_data", "globin.fa")
        f = data_stream("globin.fa")
        seqs = fasta_io.read(f, protein_alphabet)
        self.assertEqual(len(seqs), 56)
        f.close()

    def test_parse_clustal_fail(self):
        # should fail with parse error
        f = StringIO(clustal_io.example)
        self.assertRaises(ValueError, fasta_io.read, f, protein_alphabet)

    def test_parse_plain_fail(self):
        # should fail with parse error
        f = StringIO(plain_io.example)
        self.assertRaises(ValueError, fasta_io.read, f)

    def test_write_seq(self):
        f = StringIO(fasta_io.example)
        seqs = fasta_io.read(f)
        fout = StringIO()
        fasta_io.write(fout, seqs)

        fout.seek(0)
        seqs2 = fasta_io.read(fout)

        self.assertEqual(seqs, seqs2)

    def test_write_with_header(self):
        f = StringIO(fasta_io.example)
        seqs = fasta_io.read(f)
        seqs.description = "A description\nMore description"
        fout = StringIO()
        fasta_io.write(fout, seqs)

    def test_read_comments(self):
        f = StringIO(example_with_optional_comments)
        seqs = fasta_io.read(f)
        self.assertEqual(len(seqs), 2)
        self.assertEqual(seqs[1].startswith("SATVSEI"), True)
        self.assertEqual(
            seqs[1].description.splitlines()[1], ("comment line 1 (optional)")
        )

    def test_write_comments(self):
        f = StringIO(example_with_optional_comments)
        seqs = fasta_io.read(f)
        fout = StringIO()
        fasta_io.write(fout, seqs)
        fout.seek(0)
        seqs2 = fasta_io.read(fout)
        self.assertEqual(seqs, seqs2)

        self.assertEqual(seqs[1].description, seqs2[1].description)

    def test_read_headerless(self):
        # This example has blank headers.
        f = StringIO(example3)
        seqs = fasta_io.read(f)
        self.assertEqual(len(seqs), 4)
        # print seqs

        fout = StringIO()
        fasta_io.write(fout, seqs)

    def test_read_empty(self):
        f = StringIO()
        seqs = fasta_io.read(f)
        assert len(seqs) == 0

    def test_isaligned(self):
        seqs = fasta_io.read(StringIO())
        assert seqs.isaligned()
        seqs = fasta_io.read(StringIO(fasta_io.example))
        assert seqs.isaligned()
        seqs = fasta_io.read(StringIO(example4))
        assert not seqs.isaligned()

    def test_read_with_blank_line(self):
        f = StringIO(example4)
        seqs = fasta_io.read(f)
        assert not seqs.isaligned()
        self.assertEqual(len(seqs), 3)


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