#!/usr/bin/perl 

# Copyright (c) 2020 Freda Bundchen

# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

use warnings;
use strict;

use Getopt::Std qw(getopts);

our ($opt_I);

# === SUBROUTINES  =====================================================

sub import_chase_credit ($$$$) {
	my ($bookings_ref, $accounts_ref, $compiled_ref,
	    $csv_account) = @_;
	my ($trans_date, $post_date, $description, $category, 
	    $type, $amount);
	chomp(my $header = <>);
	while (<>) {
		next if (/^$/);
		chomp;
		s#(\d+)/(\d+)/(\d+)#$3$1$2#g; 
		my $line = $_;
		($trans_date, $post_date, $description, $category, 
		    $type, $amount) = split /,/;
		$description =~ s/#//g;
		my ($debit, $credit);
		my $booking = "";
		my $account = "";
		foreach my $regex (@$compiled_ref) {
			if ($line =~ /$regex/) {
				$account = %$accounts_ref{$regex};
				$booking = %$bookings_ref{$regex};
				last;
			}
		}
		if ($booking eq "" || $account eq "") {
			die "import parse error: $line";
		}
		if ($amount <= 0) {
			$amount = substr $amount, 1;
			$credit = $csv_account;	
			$debit = $account;
		} else {
			$debit = $csv_account;	
			$credit = $account;
		}
		print "$post_date $booking $debit $credit $amount " .
		    "$description\n";
	}
}

sub import_capital_one_credit ($$$$) {
	my ($bookings_ref, $accounts_ref, $compiled_ref,
	    $csv_account) = @_;
	my ($trans_date, $post_date, $card_num, $description,
	    $category, $csv_debit, $csv_credit, $amount);
	chomp(my $header = <>);
	while (<>) {
		next if (/^$/);
		chomp;
		s/(\d+)-(\d+)-(\d+)/$1$2$3/g; 
		my $line = $_;
		($trans_date, $post_date, $card_num, $description,
		    $category, , $csv_debit, $csv_credit) = split /,/;
		$description =~ s/#//g;
		my ($debit, $credit);
		my $booking = "";
		my $account = "";
		foreach my $regex (@$compiled_ref) {
			if ($line =~ /$regex/) {
				$account = %$accounts_ref{$regex};
				$booking = %$bookings_ref{$regex};
				last;
			}
		}
		if ($booking eq "" || $account eq "") {
			die "import parse error: $line";
		}
		if ($csv_debit =~ /^$/) {
			$amount = $csv_credit;
			$credit = $account;
			$debit = $csv_account;
		} else {
			$amount = $csv_debit;
			$credit = $csv_account;
			$debit = $account;
		}
		print "$post_date $booking $debit $credit $amount " .
		    "$description\n";
	}
}

sub import_optum_hsa {
        my ($bookings_ref, $accounts_ref, $compiled_ref,
            $csv_account) = @_;
        my ($date, $description, $amount,
            $type);
        chomp(my $header = <>);
        while (<>) {
                next if (/^$/);
                chomp;
                s#(\d+)-(\d+)-(\d+)#$1$2$3#;
                my $line = $_;
                ($date, $description, $amount,
                    $type) = split /,/;
                $description =~ s/#//g;
                $amount =~ s/\$//;
                my ($debit, $credit);
                my $booking = "";
                my $account = "";
                foreach my $regex (@$compiled_ref) {
                        if ($line =~ /$regex/) {
                                $account = %$accounts_ref{$regex};
                                $booking = %$bookings_ref{$regex};
                                last;
                        }
                }
                if ($booking eq "" || $account eq "") {
                        die "import parse error: $line";
                }
                if ($amount <= 0) {
                        $amount = substr $amount, 1;
                        $credit = $csv_account;
                        $debit = $account;
                } else {
                        $debit = $csv_account;
                        $credit = $account;
                }
                print "$date $booking $debit $credit $amount " .
                    "$description\n";
        }
}

sub usage () {
	printf STDERR "usage: %s -I bankname csvfilename\n", $0;
	exit 1;
}

# === MAIN PROGRAM =====================================================

my ($csv_account, $fn, $in, $sub_name, %accounts, %bookings, @compiled);
getopts 'I:' or usage;
if ($opt_I) {
	$sub_name = "import_" . $opt_I;
	$fn = $sub_name . ".txt";
	open $in, $fn or die "$fn: $!";
} else {
	usage;
}
while (<$in>) {
	chomp;
	next if /^(?:#|$)/;
	my $line = $_;
	if (/^ACCOUNT\s+(\d+)$/) {
		$csv_account and die "duplicate ACCOUNT line: $1";
		$csv_account = $1;
		next;
	}
	s/^(.*),\s+(\d+)\s+(\S+)// or
	    die "$fn import parse error: $line";
	my ($reg, $account, $booking) = ($1, $2, $3);
	$reg =~ s/(?:^|(?<=,))(?:$|(?=,))/[^,]*/g;
	$reg = qr/$reg/;
	push @compiled, $reg;
	$bookings{$reg} = $booking;
	$accounts{$reg} = $account;
}
close $in;
$csv_account or die "no ACCOUNT line in $fn";
my $sub_ref = \&$sub_name;
&$sub_ref(\%bookings, \%accounts, \@compiled, $csv_account);