/**
* function make_conversation()
* A controller function to run the instructions to make the conversation
*
* @link http://blog.program-o.com/?p=1209
* @param array $convoArr - the current state of the conversation array
* @return array $convoArr (updated)
*/
function make_conversation($convoArr)
{
runDebug(__FILE__, __FUNCTION__, __LINE__, "Making conversation", 4);
//get the user input and clean it
$convoArr['aiml']['lookingfor'] = normalize_text($convoArr['user_say'][1]);
//find an aiml match in the db
$convoArr = get_aiml_to_parse($convoArr);
$convoArr = parse_matched_aiml($convoArr, 'normal');
//parse the aiml to build a response
//store the conversation
$convoArr = push_on_front_convoArr('parsed_template', $convoArr['aiml']['parsed_template'], $convoArr);
$convoArr = push_on_front_convoArr('template', $convoArr['aiml']['template'], $convoArr);
//display conversation vars to user.
$convoArr['conversation']['totallines']++;
return $convoArr;
}
/**
* function run_srai()
* This function controls the SRAI recursion calls
* @param array $convoArr - a reference to the existing conversation array
* @param string $now_look_for_this - the text to search for
* @return string $srai_parsed_template - the result of the search
**/
function run_srai(&$convoArr, $now_look_for_this)
{
global $srai_iterations, $error_response, $dbConn, $dbn;
$bot_parent_id = $convoArr['conversation']['bot_parent_id'];
$bot_id = $convoArr['conversation']['bot_id'];
if ($bot_parent_id != 0 and $bot_parent_id != $bot_id) {
$sql_bot_select = " (bot_id = '{$bot_id}' OR bot_id = '{$bot_parent_id}') ";
} else {
$sql_bot_select = " bot_id = '{$bot_id}' ";
}
$bot_id = $convoArr['conversation']['bot_id'];
runDebug(__FILE__, __FUNCTION__, __LINE__, 'Checking for entries in the srai_lookup table.', 2);
runDebug(__FILE__, __FUNCTION__, __LINE__, "google bot_id = {$bot_id}", 2);
$lookingfor = $convoArr['aiml']['lookingfor'];
//$now_look_for_this = strtoupper($now_look_for_this);
$sql = "select `template_id` from `{$dbn}`.`srai_lookup` where `pattern` = '{$now_look_for_this}' and {$sql_bot_select};";
runDebug(__FILE__, __FUNCTION__, __LINE__, "lookup SQL = {$sql}", 2);
$sth = $dbConn->prepare($sql);
$sth->execute();
$row = $sth->fetchAll();
runDebug(__FILE__, __FUNCTION__, __LINE__, 'Result = ' . print_r($row, true), 2);
$num_rows = count($row);
if ($num_rows > 0) {
runDebug(__FILE__, __FUNCTION__, __LINE__, "Found {$num_rows} rows in lookup table: " . print_r($row, true), 2);
$template_id = $row[0]['template_id'];
runDebug(__FILE__, __FUNCTION__, __LINE__, "Found a matching entry in the lookup table. Using ID# {$template_id}.", 2);
$sql = "select `template` from `{$dbn}`.`aiml` where `id` = '{$template_id}';";
$sth = $dbConn->prepare($sql);
$sth->execute();
$row = $sth->fetch();
runDebug(__FILE__, __FUNCTION__, __LINE__, "Row found in AIML for ID {$template_id}: " . print_r($row, true), 2);
if (!empty($row)) {
$template = add_text_tags($row['template']);
try {
$sraiTemplate = new SimpleXMLElement($template, LIBXML_NOCDATA);
} catch (exception $e) {
trigger_error("There was a problem parsing the SRAI template as XML. Template value:\n{$template}", E_USER_WARNING);
$sraiTemplate = new SimpleXMLElement("<text>{$error_response}</text>", LIBXML_NOCDATA);
}
$responseArray = parseTemplateRecursive($convoArr, $sraiTemplate);
$response = implode_recursive(' ', $responseArray, __FILE__, __FUNCTION__, __LINE__);
runDebug(__FILE__, __FUNCTION__, __LINE__, "Returning results from stored srai lookup.", 2);
return $response;
}
} else {
runDebug(__FILE__, __FUNCTION__, __LINE__, 'No match found in lookup table.', 2);
}
runDebug(__FILE__, __FUNCTION__, __LINE__, "Nothing found in the SRAI lookup table. Looking for a direct pattern match for '{$now_look_for_this}'.", 2);
$sql = "SELECT `id`, `bot_id`, `pattern`, `thatpattern`, `topic` FROM `{$dbn}`.`aiml` where `pattern` = :pattern and {$sql_bot_select} order by `id` asc;";
$sth = $dbConn->prepare($sql);
$sth->bindValue(':pattern', $now_look_for_this);
$sth->execute();
$result = $sth->fetchAll();
$num_rows = count($result);
runDebug(__FILE__, __FUNCTION__, __LINE__, "Found {$num_rows} potential responses.", 2);
$allrows = array();
$i = 0;
if ($result && $num_rows > 0) {
$tmp_rows = number_format($num_rows);
runDebug(__FILE__, __FUNCTION__, __LINE__, "FOUND: ({$num_rows}) potential AIML matches", 2);
//loop through results
foreach ($result as $row) {
$row['aiml_id'] = $row['id'];
$row['score'] = 0;
$row['track_score'] = '';
$allrows[] = $row;
$mu = memory_get_usage(true);
if ($mu >= MEM_TRIGGER) {
runDebug(__FILE__, __FUNCTION__, __LINE__, 'Current operation exceeds memory threshold. Aborting data retrieval.', 0);
break;
}
}
} else {
runDebug(__FILE__, __FUNCTION__, __LINE__, "Error: FOUND NO AIML matches in DB", 1);
$allrows[$i]['aiml_id'] = "-1";
$allrows[$i]['bot_id'] = "-1";
$allrows[$i]['pattern'] = "no results";
$allrows[$i]['thatpattern'] = '';
$allrows[$i]['topic'] = '';
}
//unset all irrelvant matches
$allrows = unset_all_bad_pattern_matches($convoArr, $allrows, $now_look_for_this);
//score the relevant matches
$allrows = score_matches($convoArr, $allrows, $now_look_for_this);
//get the highest
$allrows = get_highest_scoring_row($convoArr, $allrows, $lookingfor);
if (isset($allrows['aiml_id']) && $allrows['aiml_id'] > 0) {
$sql = "select `template` from `{$dbn}`.`aiml` where `id` = :id limit 1;";
$sth = $dbConn->prepare($sql);
$aiml_id = $allrows['aiml_id'];
$pattern = $allrows['pattern'];
$sth->bindValue(':id', $aiml_id);
$sth->execute();
$row = $sth->fetch();
$sth->closeCursor();
$template = add_text_tags($row['template']);
try {
$sraiTemplate = new SimpleXMLElement($template, LIBXML_NOCDATA);
} catch (exception $e) {
trigger_error("There was a problem parsing the SRAI template as XML. Template value:\n{$template}", E_USER_WARNING);
$sraiTemplate = new SimpleXMLElement("<text>{$error_response}</text>", LIBXML_NOCDATA);
}
$responseArray = parseTemplateRecursive($convoArr, $sraiTemplate);
$response = implode_recursive(' ', $responseArray, __FILE__, __FUNCTION__, __LINE__);
try {
// code to try here
$sql = "insert into `{$dbn}`.`srai_lookup` (`id`, `bot_id`, `pattern`, `template_id`) values(null, :bot_id, :pattern, :template_id);";
$sth = $dbConn->prepare($sql);
$sth->bindValue(':bot_id', $bot_id);
$sth->bindValue(':pattern', $pattern);
$sth->bindValue(':template_id', $aiml_id);
$sth->execute();
$affectedRows = $sth->rowCount();
if ($affectedRows > 0) {
runDebug(__FILE__, __FUNCTION__, __LINE__, "Successfully inserted entry for '{$pattern}'.", 1);
}
} catch (Exception $e) {
//something to handle the problem here, usually involving $e->getMessage()
$err = $e->getMessage();
runDebug(__FILE__, __FUNCTION__, __LINE__, "Unable to insert entry for '{$pattern}'! Error = {$err}.", 1);
runDebug(__FILE__, __FUNCTION__, __LINE__, "SQL = {$sql}", 1);
}
//
runDebug(__FILE__, __FUNCTION__, __LINE__, "Returning results from stored srai lookup.", 2);
return $response;
}
runDebug(__FILE__, __FUNCTION__, __LINE__, "Running SRAI {$srai_iterations} on {$now_look_for_this}", 3);
runDebug(__FILE__, __FUNCTION__, __LINE__, $convoArr['aiml']['html_template'], 4);
//number of srai iterations - will stop recursion if it is over 10
$srai_iterations++;
runDebug(__FILE__, __FUNCTION__, __LINE__, "Incrementing srai iterations to {$srai_iterations}", 4);
if ($srai_iterations > 10) {
runDebug(__FILE__, __FUNCTION__, __LINE__, "ERROR - Too much recursion breaking out", 1);
$convoArr['aiml']['parsed_template'] = $error_response;
return $error_response;
}
//$tmp_convoArr = array();
$tmp_convoArr = $convoArr;
if (!isset($tmp_convoArr['stack'])) {
$tmp_convoArr = load_blank_stack($tmp_convoArr);
}
if (!isset($tmp_convoArr['topic'])) {
$tmp_convoArr['topic'] = array();
$tmp_convoArr['topic'][1] = '';
}
$tmp_convoArr['aiml'] = array();
$tmp_convoArr['that'][1][1] = "";
//added
$tmp_convoArr['aiml']['parsed_template'] = "";
$tmp_convoArr['aiml']['lookingfor'] = $now_look_for_this;
$tmp_convoArr['aiml']['pattern'] = $now_look_for_this;
$tmp_convoArr['aiml']['thatpattern'] = $convoArr['aiml']['thatpattern'];
$tmp_convoArr = get_aiml_to_parse($tmp_convoArr);
$tmp_convoArr = parse_matched_aiml($tmp_convoArr, "srai");
$srai_parsed_template = $tmp_convoArr['aiml']['parsed_template'];
runDebug(__FILE__, __FUNCTION__, __LINE__, "SRAI Found. Returning '{$srai_parsed_template}'", 2);
$convoArr['client_properties'] = $tmp_convoArr['client_properties'];
$convoArr['topic'] = $tmp_convoArr['topic'];
$convoArr['stack'] = $tmp_convoArr['stack'];
$srai_iterations--;
runDebug(__FILE__, __FUNCTION__, __LINE__, "Decrementing srai iterations to {$srai_iterations}", 4);
return $srai_parsed_template . " ";
}
/**
* function run_srai()
* This function controls the SRAI recursion calls
* @param array $convoArr - a reference to the existing conversation array
* @param string $now_look_for_this - the text to search for
* @return string $srai_parsed_template - the result of the search
**/
function run_srai(&$convoArr, $now_look_for_this)
{
global $srai_iterations, $offset, $error_response;
runDebug(__FILE__, __FUNCTION__, __LINE__, "Running SRAI {$srai_iterations} on {$now_look_for_this}", 3);
runDebug(__FILE__, __FUNCTION__, __LINE__, $convoArr['aiml']['html_template'], 4);
//number of srai iterations - will stop recursion if it is over 10
$srai_iterations++;
runDebug(__FILE__, __FUNCTION__, __LINE__, "Incrementing srai iterations to {$srai_iterations}", 4);
if ($srai_iterations > 10) {
runDebug(__FILE__, __FUNCTION__, __LINE__, "ERROR - Too much recursion breaking out", 1);
$convoArr['aiml']['parsed_template'] = $error_response;
return $error_response;
}
$tmp_convoArr = array();
$tmp_convoArr = $convoArr;
$tmp_convoArr['aiml'] = array();
$tmp_convoArr['that'][$offset][$offset] = "";
//added
$tmp_convoArr['aiml']['parsed_template'] = "";
$tmp_convoArr['aiml']['lookingfor'] = $now_look_for_this;
$tmp_convoArr = get_aiml_to_parse($tmp_convoArr);
$tmp_convoArr = parse_matched_aiml($tmp_convoArr, "srai");
$srai_parsed_template = $tmp_convoArr['aiml']['parsed_template'];
runDebug(__FILE__, __FUNCTION__, __LINE__, "SRAI Found: '{$srai_parsed_template}'", 2);
$convoArr['client_properties'] = $tmp_convoArr['client_properties'];
$convoArr['topic'] = $tmp_convoArr['topic'];
$convoArr['stack'] = $tmp_convoArr['stack'];
$srai_iterations--;
runDebug(__FILE__, __FUNCTION__, __LINE__, "Decrementing srai iterations to {$srai_iterations}", 4);
return $srai_parsed_template . " ";
}