# -*- coding: utf-8 -*-
#
# This file is part of SENAITE.CORE.
#
# SENAITE.CORE is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, version 2.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright 2018-2019 by it's authors.
# Some rights reserved, see README and LICENSE.

""" Shimadzu ICPE-9000 Multitype
"""
from bika.lims import bikaMessageFactory as _
from datetime import datetime
import json
import re
from bika.lims.exportimport.instruments.resultsimport import \
        InstrumentCSVResultsFileParser, AnalysisResultsImporter
import traceback

title = "Shimadzu ICPE-9000 Multitype"


def Import(context, request):
    """ Read Shimadzu GICPE-9000 Multitype analysis results
    """
    form = request.form
    # TODO form['file'] sometimes returns a list
    infile = form['instrument_results_file'][0] if \
        isinstance(form['instrument_results_file'], list) else \
        form['instrument_results_file']
    artoapply = form['artoapply']
    override = form['results_override']

    instrument = form.get('instrument', None)
    errors = []
    logs = []

    # Load the most suitable parser according to file extension/options/etc...
    parser = None
    if not hasattr(infile, 'filename'):
        errors.append(_("No file selected"))
    parser = ICPEMultitypeCSVParser(infile)

    if parser:
        # Load the importer
        status = ['sample_received', 'attachment_due', 'to_be_verified']
        if artoapply == 'received':
            status = ['sample_received']
        elif artoapply == 'received_tobeverified':
            status = ['sample_received', 'attachment_due', 'to_be_verified']

        over = [False, False]
        if override == 'nooverride':
            over = [False, False]
        elif override == 'override':
            over = [True, False]
        elif override == 'overrideempty':
            over = [True, True]

        importer = ICPEMultitypeImporter(parser=parser,
                                         context=context,
                                         allowed_ar_states=status,
                                         allowed_analysis_states=None,
                                         override=over,
                                         instrument_uid=instrument)
        tbex = ''
        try:
            importer.process()
        except:
            tbex = traceback.format_exc()
        errors = importer.errors
        logs = importer.logs
        warns = importer.warns
        if tbex:
            errors.append(tbex)

    results = {'errors': errors, 'log': logs, 'warns': warns}

    return json.dumps(results)


class ICPEMultitypeCSVParser(InstrumentCSVResultsFileParser):

    QUANTITATIONRESULTS_NUMERICHEADERS = ('Title8', 'Title9',
                                          'Title31', 'Title32',
                                          'Title41', 'Title42',
                                          'Title43',)

    def __init__(self, csv):
        InstrumentCSVResultsFileParser.__init__(self, csv)
        self._end_header = False
        self._quantitationresultsheader = []
        self._numline = 0

    def _parseline(self, line):
        return self.parse_resultsline(line)

    def parse_resultsline(self, line):
        """ Parses result lines
        """

        # Metals Mix Method with IS longer cali\tCAL1\tBlank\t9/23/2016
        # 11:54:59
        # AM\t\tMRC\tAs\tQUANT\t193.759\t1\tppb\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
        # \t\t\t\tAfter Drift Correction\t-0.0936625\t-0.1063610\t-0.1266098\t
        # \t\t\t\t\t\t\t-0.1088778\t0.0166172\t15.26

        splitted = [token.strip() for token in line.split('\t')]
        if len(splitted) == 1:
            self.err("""A tab separator was not found on the file. Maybe you are
            not using the correct file.""")
            return 0

        quantitation = {'DefaultResult': 'Title21'}
        # File has no headers
        self._quantitationresultsheader = ['Title%s' % x for x in range(44)]
        for colname in self._quantitationresultsheader:
            quantitation[colname] = ''

        for i in range(len(splitted)):
            token = splitted[i]
            if i < len(self._quantitationresultsheader):
                colname = self._quantitationresultsheader[i]
                if colname in self.QUANTITATIONRESULTS_NUMERICHEADERS:
                    try:
                        quantitation[colname] = float(token)
                    except ValueError:
                        quantitation[colname] = token

                elif colname == 'Title3':
                    d = datetime.strptime(token, "%m/%d/%Y %I:%M:%S %p")
                    quantitation[colname] = d
                else:
                    quantitation[colname] = token

            elif token:
                self.err("Orphan value in column ${index} (${token})",
                         mapping={"index": str(i+1),
                                  "token": token},
                         numline=self._numline, line=line)

        result = quantitation[quantitation['DefaultResult']]
        column_name = quantitation['DefaultResult']
        result = self.zeroValueDefaultInstrumentResults(column_name,
                                                        result, line)
        quantitation[quantitation['DefaultResult']] = result

        val = re.sub(r"\W", "", splitted[6])
        self._addRawResult(quantitation['Title2'],
                           values={val: quantitation},
                           override=False)

    def zeroValueDefaultInstrumentResults(self, column_name, result, line):
        result = str(result)
        if result.startswith('--') or result == '' or result == 'ND':
            return 0.0

        try:
            result = float(result)
            if result < 0.0:
                result = 0.0
        except ValueError:
            self.err(
                "No valid number ${result} in column (${column_name})",
                mapping={"result": result,
                         "column_name": column_name},
                numline=self._numline, line=line)
            return
        return result


class ICPEMultitypeImporter(AnalysisResultsImporter):

    def __init__(self, parser, context,  override,
                 allowed_ar_states=None, allowed_analysis_states=None,
                 instrument_uid=''):
        AnalysisResultsImporter.__init__(self, parser,
                                         context, 
                                         override, allowed_ar_states,
                                         allowed_analysis_states,
                                         instrument_uid)
