#!/usr/bin/perl

use Text::CSV;
use Data::Dumper;

# cw_products
# 0 id  1 sku  2 product_name

# cw_skus
# 0 sku_id  1 sku  2 product_id

# cw_orders
# 0 order_id  1 date  2 status  3 customer_id

# cw_order_skus
# 0 id  1 order_id  2 sku_id

# cw_customers
# 0 customer_id  1 customer_type  2 date_added  3 date_modified  4 first_name  5 last_name
# 6 7 8 9 10 = address

@products     = load_csv("cw_products.csv");
@skus         = load_csv("cw_skus.csv");
@orders       = load_csv("cw_orders.csv");
@order_skus   = load_csv("cw_order_skus.csv");
@customers    = load_csv("cw_customers.csv");
@order_status = load_csv("cw_order_status.csv");

$product_name_lookup = {};
for $product (@products) {
  $sku_name = $product->[1];
  $product_name = $product->[2];
  $product_name_lookup->{ $sku_name } = $product_name;
}

$sku_id_lookup = {};
for $sku (@skus) {
  $sku_id = $sku->[0];
  $sku_name = $sku->[1];
  $product_name = $product_name_lookup->{ $sku_name };
  $sku_id_lookup->{ $sku_id } = $sku_name;
  print $sku_name . "\t" . $product_name . "\n";
}












sub load_csv () {
  my $filename = shift;
  my @rows;
  my $csv = Text::CSV->new ( { binary => 1 } )  # should set binary attribute.
                 or die "Cannot use CSV: ".Text::CSV->error_diag ();
 
  open my $fh, "<:encoding(utf8)", $filename or die "$filename: $!";
  while ( my $row = $csv->getline( $fh ) ) {
    push @rows, $row;
  }
  $csv->eof or $csv->error_diag();
  close $fh;
  return @rows;
}