package hhn.temp.project;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

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

public class BadCasesTest {
    AssignmentManager manager;

    @BeforeEach
    public void setup() {
        manager = new AssignmentManager();
    }

    @Test
    @DisplayName("Assert that added tasks can't be Null")
    public void assertNewTasksAreNotNull() {
        int workerId = manager.createWorker("Alfred");
        assertThrows(IllegalArgumentException.class, () -> manager.addTask(workerId, null, null));
        manager.removeWorker(workerId);
    }
    @Test
    @DisplayName("Assert List isn't empty after adding a task")
    public void assertListNowEmptyAfterAdd() {
        int workerId = manager.createWorker("Alfred");
        int taskId = manager.addTask(workerId, "Run", "Jog 10 Miles");
        assertFalse(manager.getTaskMap().isEmpty());
        manager.removeWorker(workerId);
        manager.removeTask(taskId);
    }
    @Test
    @DisplayName("Assert only existing tasks can be edited")
    public void assertEditOnlyExistingTasks() {
        int workerId = manager.createWorker("Alfred");
        assertThrows(IllegalArgumentException.class, () -> manager.editTask(workerId, 99969, "I", "am Illegal"));
        assertThrows(IllegalArgumentException.class, () -> manager.editTask(22200, 99969, "I", "am Illegal"));
        manager.removeWorker(workerId);
    }
    @Test
    @DisplayName("Assert Add Task is programmed defensively")
    public void assertAddTaskOnlyAcceptsValidParameters() {
        int workerId = manager.createWorker("Alfred");
        assertThrows(IllegalArgumentException.class, () -> manager.addTask( 20203,"I", "am Illegal"));
        assertThrows(IllegalArgumentException.class, () -> manager.addTask( workerId,null, null));
        manager.removeWorker(workerId);
    }
    @Test
    @DisplayName("Assert that Remove Task is programmed defensively")
    public void assertRemoveTaskOnlyAcceptsValidParameters() {
        assertThrows(IllegalArgumentException.class, () -> manager.removeTask(20320));
    }
    @Test
    @DisplayName("Assert that un-/finishing a Task only works with valid parameters")
    public void assertTaskStateChangesOnlyAcceptsValidParameters() {
        assertThrows(IllegalArgumentException.class, () -> manager.finishTask(20405, 21034));
        assertThrows(IllegalArgumentException.class, () -> manager.unfinishTask(20405, 21034));
    }
    @Test
    @DisplayName("Assert that removing a non-existent worker throws an Exception")
    public void assertRemovingNonExistentWorkerFails() {
        assertThrows(IllegalArgumentException.class, () -> manager.removeWorker(34054));
    }
    @Test
    @DisplayName("Assert non-existent commands are recognized as such")
    public void assertInvalidCommandsDontCrash() {
        int workerId = manager.createWorker("Alfred");
        int taskId = manager.addTask(workerId, "Run", "Jog 10 Miles");
        try {
            manager.getUserCommands().handleInput("baum");
        } catch (Exception e) {
            fail("Should not crash just because a command is invalid");
        }
        manager.removeWorker(workerId);
        manager.removeTask(taskId);
    }
}