# Copyright 2010-2013 by Peter Cock.  All rights reserved.
#
# This file is part of the Biopython distribution and governed by your
# choice of the "Biopython License Agreement" or the "BSD 3-Clause License".
# Please see the LICENSE file that should have been included as part of this
# package.
"""Testing Bio.TogoWS online code."""


import unittest
from io import StringIO
from urllib.error import HTTPError

# We want to test these:
from Bio import TogoWS

# In order to check any sequences returned
from Bio import SeqIO
from Bio.SeqUtils.CheckSum import seguid
from Bio import Medline

import requires_internet

requires_internet.check()

#####################################################################


class TogoFields(unittest.TestCase):
    def test_invalid_database(self):
        """Check asking for fields of invalid database fails."""
        self.assertRaises(
            IOError, TogoWS._get_fields, "http://togows.dbcls.jp/entry/invalid?fields"
        )

    def test_databases(self):
        """Check supported databases."""
        dbs = set(TogoWS._get_entry_dbs())
        expected = {
            "nuccore",
            "nucest",
            "nucgss",
            "nucleotide",
            "protein",
            "gene",
            "homologene",
            "snp",
            "mesh",
            "pubmed",  # 'embl',
            "uniprot",
            "uniparc",
            "uniref100",
            "uniref90",
            "uniref50",
            "ddbj",
            "dad",
            "pdb",
            "compound",
            "drug",
            "enzyme",
            "genes",
            "glycan",
            "orthology",
            "reaction",
            "module",
            "pathway",
        }
        self.assertTrue(
            dbs.issuperset(expected),
            f"Missing DB: {', '.join(sorted(expected.difference(dbs)))}",
        )

    def test_pubmed(self):
        """Check supported fields for pubmed database."""
        fields = set(TogoWS._get_entry_fields("pubmed"))
        self.assertTrue(
            fields.issuperset(
                ["abstract", "au", "authors", "doi", "mesh", "so", "title"]
            ),
            fields,
        )

    def test_ncbi_protein(self):
        """Check supported fields for NCBI protein database."""
        fields = set(TogoWS._get_entry_fields("ncbi-protein"))
        self.assertTrue(
            fields.issuperset(
                [
                    "entry_id",
                    "length",
                    "strand",
                    "moltype",
                    "linearity",
                    "division",
                    "date",
                    "definition",
                    "accession",
                    "accessions",
                    "version",
                    "versions",
                    "acc_version",
                    "gi",
                    "keywords",
                    "organism",
                    "common_name",
                    "taxonomy",
                    "comment",
                    "seq",
                ]
            ),
            fields,
        )

    def test_ddbj(self):
        """Check supported fields for ddbj database."""
        fields = set(TogoWS._get_entry_fields("ddbj"))
        self.assertTrue(
            fields.issuperset(
                [
                    "entry_id",
                    "length",
                    "strand",
                    "moltype",
                    "linearity",
                    "division",
                    "date",
                    "definition",
                    "accession",
                    "accessions",
                    "version",
                    "versions",
                    "acc_version",
                    "gi",
                    "keywords",
                    "organism",
                    "common_name",
                    "taxonomy",
                    "comment",
                    "seq",
                ]
            ),
            fields,
        )

    def test_uniprot(self):
        """Check supported fields for uniprot database."""
        fields = set(TogoWS._get_entry_fields("uniprot"))
        self.assertTrue(fields.issuperset(["definition", "entry_id", "seq"]), fields)

    def test_pdb(self):
        """Check supported fields for pdb database."""
        fields = set(TogoWS._get_entry_fields("pdb"))
        self.assertTrue(
            fields.issuperset(["accession", "chains", "keywords", "models"]), fields
        )


class TogoEntry(unittest.TestCase):
    def test_pubmed_16381885(self):
        """Bio.TogoWS.entry("pubmed", "16381885")."""
        # Gives Medline plain text
        handle = TogoWS.entry("pubmed", "16381885")
        data = Medline.read(handle)
        handle.close()
        self.assertEqual(
            data["TI"], "From genomics to chemical genomics: new developments in KEGG."
        )
        self.assertEqual(
            data["AU"],
            [
                "Kanehisa M",
                "Goto S",
                "Hattori M",
                "Aoki-Kinoshita KF",
                "Itoh M",
                "Kawashima S",
                "Katayama T",
                "Araki M",
                "Hirakawa M",
            ],
        )

    def test_pubmed_16381885_ti(self):
        """Bio.TogoWS.entry("pubmed", "16381885", field="title")."""
        handle = TogoWS.entry("pubmed", "16381885", field="title")
        data = handle.read().strip()
        handle.close()
        self.assertEqual(
            data, "From genomics to chemical genomics: new developments in KEGG."
        )

    def test_pubmed_16381885_title(self):
        """Bio.TogoWS.entry("pubmed", "16381885", field="title")."""
        handle = TogoWS.entry("pubmed", "16381885", field="title")
        data = handle.read().strip()
        handle.close()
        self.assertEqual(
            data, "From genomics to chemical genomics: new developments in KEGG."
        )

    def test_pubmed_16381885_au(self):
        """Bio.TogoWS.entry("pubmed", "16381885", field="au")."""
        # Gives one name per line (i.e. \n separated), no dots
        handle = TogoWS.entry("pubmed", "16381885", field="au")
        data = handle.read().strip().split("\n")
        handle.close()
        self.assertEqual(
            data,
            [
                "Kanehisa M",
                "Goto S",
                "Hattori M",
                "Aoki-Kinoshita KF",
                "Itoh M",
                "Kawashima S",
                "Katayama T",
                "Araki M",
                "Hirakawa M",
            ],
        )

    def test_pubmed_16381885_authors(self):
        """Bio.TogoWS.entry("pubmed", "16381885", field="authors")."""
        # Gives names tab separated (i.e. \t separated)
        handle = TogoWS.entry("pubmed", "16381885", field="authors")
        data = handle.read().strip().split("\t")
        handle.close()
        self.assertEqual(
            data,
            [
                "Kanehisa, M.",
                "Goto, S.",
                "Hattori, M.",
                "Aoki-Kinoshita, K. F.",
                "Itoh, M.",
                "Kawashima, S.",
                "Katayama, T.",
                "Araki, M.",
                "Hirakawa, M.",
            ],
        )

    def test_pubmed_16381885_invalid_field(self):
        """Bio.TogoWS.entry("pubmed", "16381885", field="invalid_for_testing")."""
        self.assertRaises(
            ValueError, TogoWS.entry, "pubmed", "16381885", field="invalid_for_testing"
        )

    def test_pubmed_16381885_invalid_format(self):
        """Bio.TogoWS.entry("pubmed", "16381885", format="invalid_for_testing")."""
        self.assertRaises(
            ValueError, TogoWS.entry, "pubmed", "16381885", format="invalid_for_testing"
        )

    def test_pubmed_invalid_id(self):
        """Bio.TogoWS.entry("pubmed", "invalid_for_testing")."""
        self.assertRaises(IOError, TogoWS.entry, "pubmed", "invalid_for_testing")

    def test_pubmed_16381885_and_19850725(self):
        """Bio.TogoWS.entry("pubmed", "16381885,19850725")."""
        handle = TogoWS.entry("pubmed", "16381885,19850725")
        records = list(Medline.parse(handle))
        handle.close()
        self.assertEqual(len(records), 2)
        self.assertEqual(
            records[0]["TI"],
            "From genomics to chemical genomics: new developments in KEGG.",
        )
        self.assertEqual(
            records[0]["AU"],
            [
                "Kanehisa M",
                "Goto S",
                "Hattori M",
                "Aoki-Kinoshita KF",
                "Itoh M",
                "Kawashima S",
                "Katayama T",
                "Araki M",
                "Hirakawa M",
            ],
        )
        self.assertEqual(
            records[1]["TI"],
            "DDBJ launches a new archive database with "
            "analytical tools for next-generation sequence data.",
        )
        self.assertEqual(
            records[1]["AU"],
            [
                "Kaminuma E",
                "Mashima J",
                "Kodama Y",
                "Gojobori T",
                "Ogasawara O",
                "Okubo K",
                "Takagi T",
                "Nakamura Y",
            ],
        )

    def test_pubmed_16381885_and_19850725_authors(self):
        """Bio.TogoWS.entry("pubmed", "16381885,19850725", field="authors")."""
        handle = TogoWS.entry("pubmed", "16381885,19850725", field="authors")
        # Little hack to remove blank lines...
        # names = handle.read().replace("\n\n", "\n").strip().split("\n")
        names = handle.read().strip().split("\n")
        handle.close()
        self.assertEqual(2, len(names))
        names1, names2 = names
        self.assertEqual(
            names1.split("\t"),
            [
                "Kanehisa, M.",
                "Goto, S.",
                "Hattori, M.",
                "Aoki-Kinoshita, K. F.",
                "Itoh, M.",
                "Kawashima, S.",
                "Katayama, T.",
                "Araki, M.",
                "Hirakawa, M.",
            ],
        )
        self.assertEqual(
            names2.split("\t"),
            [
                "Kaminuma, E.",
                "Mashima, J.",
                "Kodama, Y.",
                "Gojobori, T.",
                "Ogasawara, O.",
                "Okubo, K.",
                "Takagi, T.",
                "Nakamura, Y.",
            ],
        )

    def test_invalid_db(self):
        """Bio.TogoWS.entry("invalid_db", "invalid_id")."""
        self.assertRaises(ValueError, TogoWS.entry, "invalid_db", "invalid_id")

    def test_ddbj_genbank_length(self):
        """Bio.TogoWS.entry("ddbj", "X52960", field="length")."""
        handle = TogoWS.entry("ddbj", "X52960", field="length")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(data, "248")

    def test_ddbj_genbank(self):
        """Bio.TogoWS.entry("ddbj", "X52960")."""
        handle = TogoWS.entry("ddbj", "X52960")  # Returns "genbank" format
        record = SeqIO.read(handle, "gb")
        handle.close()
        self.assertEqual(record.id, "X52960.1")
        self.assertEqual(record.name, "X52960")
        self.assertEqual(len(record), 248)
        self.assertEqual(seguid(record.seq), "Ktxz0HgMlhQmrKTuZpOxPZJ6zGU")

    def test_nucleotide_genbank_length(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="length")."""
        handle = TogoWS.entry("nucleotide", "X52960", field="length")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(data, "248")

    def test_nucleotide_genbank_seq(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="seq")."""
        handle = TogoWS.entry("nucleotide", "X52960", field="seq")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(seguid(data), "Ktxz0HgMlhQmrKTuZpOxPZJ6zGU")

    def test_nucleotide_genbank_definition(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="definition")."""
        handle = TogoWS.entry("nucleotide", "X52960", field="definition")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(data, "Coleus blumei viroid 1 (CbVd) RNA.")

    def test_nucleotide_genbank_accession(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="accession")."""
        handle = TogoWS.entry("nucleotide", "X52960", field="accession")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(data, "X52960")

    def test_nucleotide_genbank_version(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="version")."""
        handle = TogoWS.entry("nucleotide", "X52960", field="version")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(data, "1")

    def test_nucleotide_genbank_acc_version(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="acc_version")."""
        handle = TogoWS.entry("nucleotide", "X52960", field="acc_version")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(data, "X52960.1")

    def test_nucleotide_genbank_organism(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="organism")."""
        handle = TogoWS.entry("nucleotide", "X52960", field="organism")
        data = handle.read().strip()  # ignore trailing \n
        handle.close()
        self.assertEqual(data, "Coleus blumei viroid 1")

    def test_ddbj_genbank_invalid_field(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", field="invalid_for_testing")."""
        self.assertRaises(
            ValueError,
            TogoWS.entry,
            "nucleotide",
            "X52960",
            field="invalid_for_testing",
        )

    def test_nucleotide_invalid_format(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", format="invalid_for_testing")."""
        self.assertRaises(
            ValueError,
            TogoWS.entry,
            "nucleotide",
            "X52960",
            format="invalid_for_testing",
        )

    def test_ddbj_gff3(self):
        """Bio.TogoWS.entry("ddbj", "X52960", format="gff")."""
        handle = TogoWS.entry("ddbj", "X52960", format="gff")
        data = handle.read()
        handle.close()
        self.assertTrue(data.startswith("##gff-version 3\nX52960\tDDBJ\t"), data)

    def test_genbank_gff3(self):
        """Bio.TogoWS.entry("nucleotide", "X52960", format="gff")."""
        # Note - Using manual URL with genbank instead of nucleotide works
        handle = TogoWS.entry("nucleotide", "X52960", format="gff")
        data = handle.read()
        handle.close()
        self.assertTrue(data.startswith("##gff-version 3\nX52960\tGenbank\t"), data)

    def test_ddbj_fasta(self):
        """Bio.TogoWS.entry("ddbj", "X52960", "fasta")."""
        handle = TogoWS.entry("ddbj", "X52960", "fasta")
        record = SeqIO.read(handle, "fasta")
        handle.close()
        self.assertIn("X52960", record.id)
        self.assertIn("X52960", record.name)
        self.assertEqual(len(record), 248)
        self.assertEqual(seguid(record.seq), "Ktxz0HgMlhQmrKTuZpOxPZJ6zGU")

    def test_nucleotide_fasta(self):
        """Bio.TogoWS.entry("nucleotide", "6273291", "fasta")."""
        handle = TogoWS.entry("nucleotide", "6273291", "fasta")
        record = SeqIO.read(handle, "fasta")
        handle.close()
        # NCBI is phasing out GI numbers, so no longer true:
        # self.assertIn("6273291", record.id)
        # self.assertIn("6273291", record.name)
        self.assertIn("AF191665.1", record.id)
        self.assertIn("AF191665.1", record.name)
        self.assertEqual(len(record), 902)
        self.assertEqual(seguid(record.seq), "bLhlq4mEFJOoS9PieOx4nhGnjAQ")

    def test_protein_fasta(self):
        """Bio.TogoWS.entry("protein", "16130152", "fasta")."""
        handle = TogoWS.entry("protein", "16130152", "fasta")
        record = SeqIO.read(handle, "fasta")
        handle.close()
        # NCBI is phasing out GI numbers, so no longer true:
        # self.assertIn("16130152", record.id)
        # self.assertIn("16130152", record.name)
        self.assertIn("NP_416719.1", record.id)
        self.assertIn("NP_416719.1", record.name)
        self.assertIn(" porin ", record.description)
        self.assertEqual(len(record), 367)
        self.assertEqual(seguid(record.seq), "fCjcjMFeGIrilHAn6h+yju267lg")


class TogoSearch(unittest.TestCase):
    """Search tests."""

    def test_bad_args_just_limit(self):
        """Reject Bio.TogoWS.search(...) with just limit."""
        self.assertRaises(ValueError, TogoWS.search, "pubmed", "lung+cancer", limit=10)

    def test_bad_args_just_offset(self):
        """Reject Bio.TogoWS.search(...) with just offset."""
        self.assertRaises(ValueError, TogoWS.search, "pubmed", "lung+cancer", offset=10)

    def test_bad_args_zero_limit(self):
        """Reject Bio.TogoWS.search(...) with zero limit."""
        self.assertRaises(
            ValueError, TogoWS.search, "pubmed", "lung+cancer", offset=1, limit=0
        )

    def test_bad_args_zero_offset(self):
        """Reject Bio.TogoWS.search(...) with zero offset."""
        self.assertRaises(
            ValueError, TogoWS.search, "pubmed", "lung+cancer", offset=0, limit=10
        )

    def test_bad_args_non_int_offset(self):
        """Reject Bio.TogoWS.search(...) with non-integer offset."""
        self.assertRaises(
            ValueError, TogoWS.search, "pubmed", "lung+cancer", offset="test", limit=10
        )

    def test_bad_args_non_int_limit(self):
        """Reject Bio.TogoWS.search(...) with non-integer limit."""
        self.assertRaises(
            ValueError, TogoWS.search, "pubmed", "lung+cancer", offset=1, limit="lots"
        )

    def test_pubmed_search_togows(self):
        """Bio.TogoWS.search_iter("pubmed", "TogoWS") etc."""
        self.check("pubmed", "TogoWS", ["20472643"])

    def test_pubmed_search_bioruby(self):
        """Bio.TogoWS.search_iter("pubmed", "BioRuby") etc."""
        self.check(
            "pubmed",
            "BioRuby",
            ["22994508", "22399473", "20739307", "20015970", "14693808"],
        )

    def test_pubmed_search_porin(self):
        """Bio.TogoWS.search_iter("pubmed", "human porin") etc.

        Count was 357 at time of writing, this was chosen to
        be larger than the default chunk size for iteration,
        but still not too big to download the full list.
        """
        self.check("pubmed", "human porin", ["21189321", "21835183"])

    # TogoWS search for PDBj currently unavailable
    #    def test_pdb_search_porin(self):
    #        """Bio.TogoWS.search_iter("pdb", "porin") etc
    #
    #        Count was about 161 at time of writing.
    #        """
    #        self.check("pdb", "porin", ["2j1n", "2vqg", "3m8b", "2k0l"])

    def test_uniprot_search_lung_cancer(self):
        """Bio.TogoWS.search_iter("uniprot", "terminal+lung+cancer", limit=150) etc.

        Search count was 211 at time of writing, a bit large to
        download all the results in a unit test. Want to use a limit
        larger than the batch size (100) to ensure at least two
        batches.
        """
        self.check("uniprot", "terminal+lung+cancer", limit=150)

    def check(self, database, search_term, expected_matches=(), limit=None):
        if expected_matches and limit:
            raise ValueError("Bad test - TogoWS makes no promises about order")
        try:
            search_count = TogoWS.search_count(database, search_term)
        except HTTPError as err:
            raise ValueError(f"{err} from {err.url}") from None
        if expected_matches:
            self.assertGreaterEqual(search_count, len(expected_matches))
        if search_count > 5000 and not limit:
            print("%i results, skipping" % search_count)
            return
        if limit:
            count = min(search_count, limit)
        else:
            count = search_count

        # Iteration should find everything... unless a limit is used
        search_iter = list(TogoWS.search_iter(database, search_term, limit))
        self.assertEqual(count, len(search_iter))
        for match in expected_matches:
            self.assertIn(match, search_iter, f"Expected {match} in results")


class TogoConvert(unittest.TestCase):
    """Conversion tests."""

    def test_invalid_format(self):
        """Check convert file format checking."""
        self.assertRaises(
            ValueError,
            TogoWS.convert,
            StringIO("PLACEHOLDER"),
            "genbank",
            "invalid_for_testing",
        )
        self.assertRaises(
            ValueError,
            TogoWS.convert,
            StringIO("PLACEHOLDER"),
            "invalid_for_testing",
            "fasta",
        )

    def test_genbank_to_fasta(self):
        """Conversion of GenBank to FASTA."""
        filename = "GenBank/NC_005816.gb"
        old = SeqIO.read(filename, "gb")
        with open(filename) as handle:
            new = SeqIO.read(TogoWS.convert(handle, "genbank", "fasta"), "fasta")
        self.assertEqual(old.seq, new.seq)


#    def test_genbank_to_embl(self):
#        """Conversion of GenBank to EMBL."""
#        filename = "GenBank/NC_005816.gb"
#        old = SeqIO.read(filename, "gb")
#        with open(filename) as handle:
#            new = SeqIO.read(TogoWS.convert(handle, "genbank", "embl"), "embl")
#        self.assertEqual(str(old.seq), str(new.seq))


if __name__ == "__main__":
    runner = unittest.TextTestRunner(verbosity=2)
    unittest.main(testRunner=runner)
