# -*- coding: utf-8 -*-
#!/usr/bin/env python
from __future__ import absolute_import, print_function
import sys
import getopt
import os
import csv
from base import RAW_DIR, TARGET_DIR, create_csv

OCT_RAW_DIR = os.path.join(RAW_DIR, '..', 'oct')
verbose = False
writefile = False


def process_lo_data4search(model=None):
    '''
    return group of LO by model
        if not asking for model, return dict with all models + LO
    '''
    groupy = {}
    with open(os.path.join(OCT_RAW_DIR, 'LO_DataFor_Search.csv'), 'rU') as f:
        '''
        PEP278 explained what rU stands for:
            In a Python with universal newline support open() the mode
            parameter can also be "U", meaning "open for input as a text file
            with universal newline interpretation". Mode "rU" is also allowed,
            for symmetry with "rb".
        '''
        rows = csv.reader(f)
        for row in rows:
            if row[1] not in groupy:
                groupy[row[1]] = []
            groupy[row[1]].append(row)
    if not model:
        return groupy
    elif model in groupy:
        return groupy[model]
    else:
        return []


def get_lo_list_from_part7(model=None, rtype=None):
    '''
    Fetch data from part 7 putting in List for easy access
    '''
    if not model and not rtype:
        return []
    result = []
    filename = '%s-%s.csv' % (model, rtype)
    with open(os.path.join(TARGET_DIR, 'part7', filename), 'rb') as f:
        rows = csv.reader(f)
        for row in rows:
            result.append(row)
    return result


def isMatch(a, b):
    '''
    ----> one limit : b needs to be 1-char since it will complicate things too much
    possibility:
        Y/N* --- N, Y
    '''
    match = False
    aa = a.replace('*', '').split('/')
    if b in aa:
        return True
    return False


def get_matched_lo_list(los, ros):
    COMPARSION_PAIR = [  # ใส่ไป (#R, #LO) คือ
        (5, 2), (6, 3), (7, 6), (8, 7), (9, 10),
        (10,12), (11,13), (12,15), (13,17), (14,18),
        (15,19), (16,21) ,(17, 22), (18, 24), (19, 27),
        (20, 29), (21, 30), (22, 31), (23, 33)
    ]
    ok = []

    isMatched = False
    for lo in los:
        if verbose:
            print('\n----------------------------------------------')
        for ro in ros:
            if isMatched:
                continue
            # check if all columns are matched
            count = 0
            for r, l in COMPARSION_PAIR:
                if isMatch(ro[r], lo[l]):
                    # print('MATCHED: %s === %s' % (ro[r], lo[l]), end=' | ')
                    if verbose:
                        print('_', end='')
                    count += 1
                else:
                    # print(' X     : %s !== %s' % (ro[r], lo[l]), end=' | ')
                    if verbose:
                        print('X', end='')
            # if matched column count == len(COMPARSION_PAIR), then it's a match
            if count == len(COMPARSION_PAIR):
                isMatched = True
            if verbose:
                print('\n%s %s ==> %s | matched pair #%s/%s' % (
                    lo[0], ro[0], isMatched, count, len(COMPARSION_PAIR)))
        if isMatched:
            ok.append(lo)
        # reset match boolean
        isMatched = False

    return ok


def startProcessingS10(model, rtype):
    data4search = process_lo_data4search(model)
    part7data = get_lo_list_from_part7(model, rtype)
    output = get_matched_lo_list(data4search, part7data)
    print('==============================================')
    print('output: #%s' % len(output))

    if len(output):
        print([l[0] for l in output])

    if writefile:
        output_name = '%s-%s.csv' % (model, rtype)
        create_csv(output_name, output, directory='part10')


def usage():
    print(
        '''Help:
    [opts]
    -m, --model     Model Name
    -r, --rtype     R_Type
    -v              verbose
    -w              write output to file
Usage:
    $ python s10.py [opts] [value]
Example:
    $ python s10.py -mCFHD -r3
    $ python s10.py -mCFHD -r3 -v               << show more information
    $ python s10.py -m CFHD -r 3 -v             << same as above
    $ python s10.py --model=CFHD --rtype=3 -v   << same as above
    $ python s10.py -m CFHD -r 3 -w     << write output file too.
    $ python s10.py -mCFHD -r3 -vw      << show more information & output file.
    ''')


def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], 'm:r:vw', ['model=', 'rtype='])
    except getopt.GetoptError:
        usage()
        sys.exit(2)
    model_value = rtype_value = None
    for opt, arg in opts:
        if opt == "-v":
            global verbose
            verbose = True
        elif opt == "-w":
            global writefile
            writefile = True
        elif opt in ('-m', '--model'):
            ## TODO: filter model availabel and throw exception if invalid
            if len(arg) != 4:
                usage()
                sys.exit(2)
            model_value = arg.upper()
        elif opt in ('-r', '--rtype'):
            if arg not in '1234':
                usage()
                sys.exit(2)
            rtype_value = arg

    print('[s10] model: %s | r_type: %s' % (model_value, rtype_value))

    startProcessingS10(model_value, rtype_value)

if __name__ == '__main__':
    main()