package be.jeffcheasey88.peeratcode.parser.java;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInstance;
import org.junit.jupiter.api.TestInstance.Lifecycle;

import be.jeffcheasey88.peeratcode.parser.java.operations.ConditionalOperation.ForOperation;
import be.jeffcheasey88.peeratcode.parser.java.operations.ConditionalOperation.WhileOperation;
import be.jeffcheasey88.peeratcode.parser.java.operations.DoOperation;
import be.jeffcheasey88.peeratcode.parser.java.operations.LoopAffectOperation.BreakOperation;
import be.jeffcheasey88.peeratcode.parser.java.operations.LoopAffectOperation.ContinueOperation;
import be.jeffcheasey88.peeratcode.parser.java.operations.MethodCallOperation;
import be.jeffcheasey88.peeratcode.parser.java.operations.SynchronizedOperation;

@TestInstance(Lifecycle.PER_CLASS)
class OperationTest{
	
	JavaParser parse(String code) throws Exception{
		BufferedReader reader = new BufferedReader(new Reader(){public int read(char[] cbuf, int off, int len) throws IOException{return 0;}public void close() throws IOException {}}) {
			private boolean read = false;
			@Override
			public String readLine() throws IOException{
				if(read) return null;
				read = true;
				return code;
			}
		};
		
		JavaParser parser = new JavaParser();
		parser.parse(reader);
		return parser;
	}
	
	@Test
	void ifOperation(){
		try {
			JavaParser parser =  parse("package be.jeffcheasey88.peeratcode.parser.java; class Test{ void function(){ int i = 0; if(i == 0)      { return i; } return i; } }");
			Class clazz = parser.getClazz();
			
			assertEquals(1, clazz.getChilds().size());
			Function function = (Function) clazz.getChilds().get(0);
			assertEquals(3, function.getChilds().size());
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
	
	@Test
	void ifWithNoneOperation(){
		try {
			JavaParser parser =  parse("package be.jeffcheasey88.peeratcode.parser.java; class Test{ void function(){ int i = 0; if(i == 0); return i; } }");
			Class clazz = parser.getClazz();
			
			assertEquals(1, clazz.getChilds().size());
			Function function = (Function) clazz.getChilds().get(0);
			assertEquals(3, function.getChilds().size());
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
	
	@Test
	void doWhileOperation(){
		try {
			JavaParser parser =  parse("package be.jeffcheasey88.peeratcode.parser.java; class Test{ void function(){ int i = 0; do{ System.out.println(\"Hello\"); }while(i == 0); return i; } }");
			Class clazz = parser.getClazz();
			
			assertEquals(1, clazz.getChilds().size());
			Function function = (Function) clazz.getChilds().get(0);
			assertEquals(4, function.getChilds().size());
			
			assertEquals(DoOperation.class, function.getChilds().get(1).getClass());
			DoOperation doOp = (DoOperation)function.getChilds().get(1);
			assertEquals(1, doOp.getChilds().size());
			assertEquals(MethodCallOperation.class, doOp.getChilds().get(0).getClass());
			
			assertEquals(WhileOperation.class, function.getChilds().get(2).getClass());
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
	
	@Test
	void continueOperation(){
		try {
			JavaParser parser =  parse("package be.jeffcheasey88.peeratcode.parser.java; class Test{ void function(){ for(int i = 0; i < 1; i++) continue; } }");
			Class clazz = parser.getClazz();
			
			assertEquals(1, clazz.getChilds().size());
			Function function = (Function) clazz.getChilds().get(0);
			assertEquals(1, function.getChilds().size());
			
			assertEquals(ForOperation.class, function.getChilds().get(0).getClass());
			ForOperation f = (ForOperation)function.getChilds().get(0);
			assertEquals(1, f.getChilds().size());
			assertEquals(ContinueOperation.class, f.getChilds().get(0).getClass());
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
	
	@Test
	void breakOperation(){
		try {
			JavaParser parser =  parse("package be.jeffcheasey88.peeratcode.parser.java; class Test{ void function(){ for(int i = 0; i < 1; i++) break    ; } }");
			Class clazz = parser.getClazz();
			
			assertEquals(1, clazz.getChilds().size());
			Function function = (Function) clazz.getChilds().get(0);
			assertEquals(1, function.getChilds().size());
			
			assertEquals(ForOperation.class, function.getChilds().get(0).getClass());
			ForOperation f = (ForOperation)function.getChilds().get(0);
			assertEquals(1, f.getChilds().size());
			assertEquals(BreakOperation.class, f.getChilds().get(0).getClass());
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
	
	@Test
	void synchronizedOperation(){
		try {
			JavaParser parser =  parse("package be.jeffcheasey88.peeratcode.parser.java; class Test{ void function(){ synchronized(this) { this.none(); } } }");
			Class clazz = parser.getClazz();
			
			assertEquals(1, clazz.getChilds().size());
			Function function = (Function) clazz.getChilds().get(0);
			assertEquals(1, function.getChilds().size());
			
			assertEquals(SynchronizedOperation.class, function.getChilds().get(0).getClass());
			SynchronizedOperation sync = (SynchronizedOperation)function.getChilds().get(0);
			assertEquals(1, sync.getChilds().size());
			assertEquals(MethodCallOperation.class, sync.getChilds().get(0).getClass());
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
}