Notes

public class Magpie4 {
/**
* Get a default greeting
* @return a greeting
*/
public String getGreeting() {
return "Hey, let's have a conversation with each other.";
}


public String getResponse(String statement) {
String response = "";

// Look for a two word (you <something> me) pattern
int youPsn = findKeyword(statement, "you", 0);
int iPsn = findKeyword(statement, "I", 0);

if (statement.length() == 0) {
response = "You do know that having a conversation requires you to speak.";
} else if (findKeyword(statement, "no") >= 0) {
response = "Why so negative?";
} else if (findKeyword(statement, "mother") >= 0
|| findKeyword(statement, "father") >= 0
|| findKeyword(statement, "sister") >= 0
|| findKeyword(statement, "siblings") >= 0
|| findKeyword(statement, "Parents") >= 0
|| findKeyword(statement, "Grandmother") >= 0
|| findKeyword(statement, "Grandfather") >= 0
|| findKeyword(statement, "Grandparents") >= 0
|| findKeyword(statement, "brother") >= 0) {
response = "Tell me more about your family.";
}

// Responses which require transformations
else if (youPsn >= 0 && findKeyword(statement, "me", youPsn) >= 0) {
response = transformYouMeStatement(statement);
} else if (iPsn >= 0 && findKeyword(statement, "you", iPsn) >= 0) {
response = transformIYouStatement(statement);
} else if (findKeyword(statement, "I want to", 0) >= 0) {
response = transformIWantToStatement(statement);
} else if (findKeyword(statement, "I want", 0) >= 0) {
response = transformIWantStatement(statement);
} else {
response = getRandomResponse();
}

return response;
}


private String transformIWantToStatement(String statement) {
statement = statement.trim();
String lastChar = statement.substring(statement
.length() - 1);
if (lastChar.equals(".") || lastChar.equals("!"))
{
statement = statement.substring(0, statement
.length() - 1);
}
int psn = findKeyword (statement, "I want to", 0);
String restOfStatement = statement.substring(psn + 9).trim();
return "What would it mean to " + restOfStatement + "?";
}

private String transformIWantStatement(String statement) {
statement = statement.trim();
String lastChar = statement.substring(statement.length() - 1);
if (lastChar.equals(".") || lastChar.equals("!"))
{
statement = statement.substring(0, statement.length() - 1);
}
int psn = findKeyword (statement, "I want", 0);
String restOfStatement = statement.substring(psn + 6).trim();
return "Would you really be happy/ At peace if you had " + restOfStatement + "?";
}

private String transformYouMeStatement(String statement) {
// Remove the final period, if there is one
statement = statement.trim();
String lastChar = statement.substring(statement.length() - 1);
if (lastChar.equals("."))
{
statement = statement.substring(0, statement.length() - 1);
}

int psnOfYou = findKeyword (statement, "you", 0);
int psnOfMe = findKeyword (statement, "me", psnOfYou + 3);

String restOfStatement = statement.substring(psnOfYou + 3, psnOfMe).trim();
return "What makes you think that I " + restOfStatement + " you?";
}

private String transformIYouStatement(String statement) {
// Remove the final period, if there is one
statement = statement.trim();
String lastChar = statement.substring(statement.length() - 1);
if (lastChar.equals("."))
{
statement = statement.substring(0, statement.length() - 1);
}

int psnOfI = findKeyword (statement, "I", 0);
int psnOfYou = findKeyword (statement, "you", psnOfI + 1);

String restOfStatement = statement.substring(psnOfI + 1, psnOfYou).trim();
return "Why do you " + restOfStatement + " me?";
}

private int findKeyword(String statement, String goal, int startPos) {
String phrase = statement.trim();
int psn = phrase.toLowerCase().indexOf(goal.toLowerCase(), startPos);

while (psn >= 0)
{

String before = " ", after = " ";
if (psn > 0)
{
before = phrase.substring (psn - 1, psn).toLowerCase();
}
if (psn + goal.length() < phrase.length())
{
after = phrase.substring(psn + goal.length(), psn + goal.length() + 1).toLowerCase();
}

if (((before.compareTo ("a") < 0 ) || (before.compareTo("z") > 0)) // before is not a letter
&& ((after.compareTo ("a") < 0 ) || (after.compareTo("z") > 0)))
{
return psn;
}

psn = phrase.indexOf(goal.toLowerCase(), psn + 1);

}

return -1;
}


private int findKeyword(String statement, String goal) {
return findKeyword (statement, goal, 0);
}


private String getRandomResponse() {
final int NUMBER_OF_RESPONSES = 7;
double r = Math.random();
int whichResponse = (int) (r * NUMBER_OF_RESPONSES);
String response = "";

if (whichResponse == 0) {
response = "I personally don't care for what you say.";
} else if (whichResponse == 1) {
response = "And How does it make you feel?";
} else if (whichResponse == 2) {
response = "K.";
} else if (whichResponse == 3) {
response = "Bet.";
} else if (whichResponse == 4) {
response = "Interesting...";
} else if (whichResponse == 5) {
response = "I know this is off topic but I really like Fried Chicken and Cheese fries";
} else if (whichResponse == 6) {
response = "I have this teacher, his name is bajcz and hes amazing";
}

return response;
}

}