#!/usr/bin/perl

########################################################################
#::: 13th floor import script
#::: Items Source: http://items.sodeq.org/download.php
#::: How To:
#:::   1. Place this script with your server eqemu_config.json
#:::   2. Download the items.txt file and place with this script
#:::   3. Run this script with Perl
#:::   4. Review new and updated items in the items_new table
#:::   5. Make any desired changes and replace the items table contents
########################################################################

use DBI;
use DBD::mysql;

my $db_host = "";
my $db_port = "";
my $db_name = "";
my $db_user = "";
my $db_pass = "";
my $total_items = 0;
my $read_items_file = "items.txt"; #default
my $keep_temp_items_table = 0; #keeps the imported items table

read_eqemu_config_json();

my $dbh = DBI->connect("DBI:mysql:database=$db_name;host=$db_host;port=$db_port", $db_user, $db_pass) or die "Cannot connect to MySql.";

read_items_file_from_13th_floor_text();
update_items_table();

print "\n\nImport complete! Review items_new table before replacing into items table.\n\n";

sub read_eqemu_config_json {
    use JSON;
    my $json = new JSON();
    my $config;
    my $config_file = "eqemu_config.json";

    my $content;
    open(my $fh, '<', $config_file) or die "cannot open file $config_file"; {
      local $/;
      $content = <$fh>;
    }
    close($fh);

    $config = $json->decode($content);

    $db_host = $config->{"server"}{"database"}{"host"};
    $db_port = $config->{"server"}{"database"}{"port"};
    $db_name = $config->{"server"}{"database"}{"db"};
    $db_user = $config->{"server"}{"database"}{"username"};
    $db_pass = $config->{"server"}{"database"}{"password"};
}

sub read_items_file_from_13th_floor_text {

        #::: Read from file and place into array
        open(F, "<" . $read_items_file) or die "Unable to open itemfile: " . $read_items_file . "\n";
        my @item_file_lines = <F>;
        close(F);

        #::: Chomp this array...
        my @newitem_file_lines;
        chomp($item_file_lines[0]);
        @fields = split("(?<!\\\\)\\|", $item_file_lines[0]);

        my $sth = $dbh->prepare("SHOW TABLES LIKE 'items_floor'");
        $sth->execute();
        my $has_items_floor = $sth->fetchrow_array();

        #::: If we don't have items_floor table
        if ($has_items_floor eq '') {
                $dbh->do("CREATE TABLE `items_floor` (`" . join("` VARCHAR(64) NOT NULL DEFAULT '', `", @fields). "` VARCHAR(64) NOT NULL DEFAULT '', UNIQUE INDEX `ID` (`id`)) COLLATE='latin1_swedish_ci' ENGINE=MyISAM");
                $dbh->do("ALTER TABLE `items_floor` CHANGE `id` `id` INT(11) NOT NULL DEFAULT '0'");
                printf "Database items_floor created\n";
        }

        #::: Create REPLACE INTO header and define worker variables...
        $master_insert = "REPLACE INTO `items_floor` (" . join(",", @fields) . ") VALUES ";
        $query_insert_ph = ""; #::: Used for building placeholder values in query Ex: (?, ?, ?)
        @field_values = (); #::: Used for stuffing mysql field values
        $query_count = 0; #::: Used for chunking query updates
        $print_cycle = 0; #::: Counter for console updates
        $start_time = time(); #::: Start time for import
        $total_items_file = scalar(grep $_, @item_file_lines) - 1; #::: Total items in text file

        #::: Iterate through each item in items.txt
        for (1 .. $#item_file_lines) {
                @f = split("(?<!\\\\)\\|", $item_file_lines[$_]);

                #::: Build our individual prepared statement (?, ?) values in the insert_ph
                #::: ?, ? placeholders will be resolved via @field_values in the execute
                $query_insert_ph .= " (";
                foreach (@f) {
                        push (@field_values, trim($_));
                        $query_insert_ph .= "?, ";
                }
                $query_insert_ph = substr($query_insert_ph, 0, -2);
                $query_insert_ph .= "), ";

                #::: Let's chunk our updates so we can break up the amount of individual queries
                if($query_count > 500){
                        $query_insert_ph = substr($query_insert_ph, 0, -2);
                        $dbh->prepare($master_insert . " " . $query_insert_ph)->execute(@field_values);
                        $query_count = 0;
                        $query_insert_ph = "";
                        @field_values = ();
                }

                #::: Print updates to console
                if($print_cycle > 25){
                        print "Processing (" . $read_items_file . ") :: (Items: " . $total_items . "/" . $total_items_file . ")                 \r";
                        $print_cycle = 0;
                }

                #::: Counters
                $total_items++;
                $query_count++;
                $print_cycle++;
        }

        #::: One last processing print
        print "Processing (" . $read_items_file . ") :: (Items: " . $total_items . "/" . $total_items_file . ")                 \r";

        printf "\n" . $total_items . " items imported... Took " . (time() - $start_time) . " second(s)... \n";

        #::: Process slots 21, 22
        print "Flipping slots 21 and 22...";
        $rows_affected = $dbh->prepare("
                UPDATE `items_floor`
                SET `slots` = (`slots` ^ 6291456)
                WHERE (`slots` & 6291456)
                IN (2097152, 4194304)")->execute();
        print " :: Rows affected (" . $rows_affected . ")\n";

        #::: Update idfile entries
        print "Updating idfile entries...";
        $rows_affected = $dbh->prepare("
                UPDATE `items_floor`
                SET `idfile` = CONCAT('IT', `idfile`)")->execute();
        print " :: Rows affected(" . $rows_affected . ")\n";
}

sub update_items_table {

        #::: Establish items_new table
        print "Setting up new items table...\n";
        $dbh->do("DROP TABLE IF EXISTS items_new");
        $dbh->do("CREATE TABLE items_new AS SELECT * FROM items");

        print "Updating new items table...\n";

        my @matching_table;
        my @missing_items_table;
        my @missing_items_floor_table;

        print "Comparing table structure...\n";
        #::: Get columns from `items`
        my $sth = $dbh->prepare("SHOW COLUMNS FROM `items_new`;");
        $sth->execute();
        my @items_table;
        while (my @row = $sth->fetchrow_array()) {
                push(@items_table, $row[0]);
        }

        #::: Get columns from `items_floor`
        $sth2 = $dbh->prepare("SHOW COLUMNS FROM `items_floor`");
        $sth2->execute();
        my @items_floor_table;
        while (my @row = $sth2->fetchrow_array()) {
                push(@items_floor_table, $row[0]);
        }

        #::: Go through the original items table columns and line them up with what columns match on 13th floor
        #::: This is so we can use the matching columns to update and insert item data into `items` table
        foreach $value (@items_table) {
                if ( grep( /^$value$/i, @items_floor_table ) ) {
                        push(@matching_table, $value);
                } else {
                        #::: What values are we missing from EMU items table..
                        push(@missing_items_table, $value);
                }
        }

        #::: What values are we missing from.. 13thFloor
        foreach $value (@items_floor_table) {
                if ( grep( /^$value$/i, @items_table ) ) {
                        #DO NOTHING...
                } else {
                        push(@missing_items_floor_table, $value);
                }
        }

        #::: Go through the matched columns and build our query strings...

        my $items_field_list = ""; #::: Build the field list for the INSERT (field1, field2)
        my $items_floor_field_list = ""; #::: What fields we will select from items_floor table to insert into items (matched columns)
        my $update_fields = ""; #::: To update an existing item entry if it exists...

        foreach $match (@matching_table) {
                $match = lc($match);
                $update_fields .= "`" . $match . "` = fi.`" . $match . "`, ";
                $items_field_list .= "`" . $match . "`, ";
                $items_floor_field_list .= "fi.`" . $match . "`, ";
        }
        #::: Trim ', ' off the ends
        $update_fields = substr($update_fields, 0, -2);
        $items_field_list = substr($items_field_list, 0, -2);
        $items_floor_field_list = substr($items_floor_field_list, 0, -2);

        #::: Mixed up fields...
        $items_floor_field_list =~ s/booktype/booklang/g; #our booktype is mixed with theirs...
        $update_fields =~ s/`booktype` = fi.`booktype`/`booktype` = fi.`booklang`/g;

        #::: FIELDS THAT DO NOT MATCH GO HERE
        my @items_add = (
                "casttime_", "endur", "range", "attuneable", "evolvinglevel", "herosforgemodel", "scrolltype",
                "scriptfileid", "powersourcecapacity", "augslot1unk2", "augslot2unk2", "augslot3unk2", "augslot4unk2",
                "augslot5unk2", "augslot6unk2", "recskill", "book", "procunk1"
        );
        my @items_floor_add = (
                "foodduration", "endurance", "therange", "attunable", "evolvl", "heroforge1", "scrolleffecttype",
                "rightclickscriptid", "powersourcecap",    "augslot1unk", "augslot2unk", "augslot3unk", "augslot4unk",
                "augslot5unk", "augslot6unk", "reqskill", "booktype", "prockunk1"
        );

        #::: Match the mis-matched fields...
        print "Matching fields...\n";
        my $spot = 0;
        foreach $value (@items_add) {
                $items_field_list .= ", `" . $value . "`";
                $update_fields .= ", `" . $value . "` = fi.`" . $items_floor_add[$spot] . "`";
                $spot++;
                @missing_items_table = grep {$_ ne $value} @missing_items_table;
        }
        foreach $value (@items_floor_add) {
                $items_floor_field_list .= ", fi.`" . $value . "`";
                @missing_items_floor_table = grep {$_ ne $value} @missing_items_floor_table;
        }

        my $update_query = "
                INSERT INTO items_new (" . $items_field_list . ")
                SELECT " . $items_floor_field_list . "
                FROM items_floor fi
                ON DUPLICATE KEY UPDATE " . $update_fields;

        #::: Print missing fields to file
        print "Writing query and discrepencies to file...\n";
        my $write_file = "missing_item_fields.txt";

        open(F, ">$write_file") or die "Unable to open file: $write_file\n";
        print F "$update_query \n\n";
        print F "EQEMU items table extra fields:\n";
        foreach $value (@missing_items_table) {
                print F "$value\n";
        }
        print F "\n\n13thFloor items table extra fields:\n";
        foreach $value (@missing_items_floor_table) {
                print F "$value\n";
        }
        close(F);

        #::: Number of rows affected by query
        $rows = $dbh->do($update_query);
        print "Added or updated " . $rows . " entries.\n";

        #::: Update stackables
        print "Updating stackable field...\n";
        $dbh->do("UPDATE items_new i SET i.stackable = 1 WHERE i.stacksize > 1");

        #::: Update legacy research tome bagtypes
        print "Updating legacy research tomes...\n";
        $dbh->do("UPDATE items_new i SET i.bagtype = 24 WHERE i.id IN (17655, 17903)"); #RESEARCHWIZ
        $dbh->do("UPDATE items_new i SET i.bagtype = 25 WHERE i.id IN (17502, 17653)"); #RESEARCHMAG
        $dbh->do("UPDATE items_new i SET i.bagtype = 26 WHERE i.id IN (17501, 17654)"); #RESEARCHNEC
        $dbh->do("UPDATE items_new i SET i.bagtype = 27 WHERE i.id IN (17500, 17652)"); #RESEARCHENC

        #::: Remove temp table
        if (!$keep_temp_items_table) {
          print "Cleaning up temp items table...\n";
          $dbh->do("DROP TABLE items_floor");
        }
}

sub trim($) {
        my $string = shift;
        $string =~ s/^\s+//;
        $string =~ s/\s+$//;
        return $string;
}