import { describe, it, expect } from "vitest";
import { LocalCourse } from "@/models/local/localCourse";
import { CourseDifferences } from "../fileStorage/utils/courseDifferences";

describe("CourseDifferencesDeletionsTests", () => {
  it("same module does not get deleted", () => {
    const oldCourse: LocalCourse = {
      settings: {
        name: "test course",
        assignmentGroups: [],
        daysOfWeek: [],
        startDate: "07/09/2024 23:59:00",
        endDate: "07/09/2024 23:59:00",
        defaultDueTime: {
          hour: 23,
          minute: 59,
        },
      },
      modules: [
        {
          name: "test module",
          assignments: [],
          quizzes: [],
          pages: [],
        },
      ],
    };
    const newCourse: LocalCourse = {
      ...oldCourse,
      modules: [
        {
          name: "test module",
          assignments: [],
          quizzes: [],
          pages: [],
        },
      ],
    };

    const differences = CourseDifferences.getDeletedChanges(
      newCourse,
      oldCourse
    );

    expect(differences.namesOfModulesToDeleteCompletely).toHaveLength(0);
  });

  it("changed module - old one gets deleted", () => {
    const oldCourse: LocalCourse = {
      settings: {
        name: "test course",
        assignmentGroups: [],
        daysOfWeek: [],
        startDate: "07/09/2024 23:59:00",
        endDate: "07/09/2024 23:59:00",
        defaultDueTime: {
          hour: 23,
          minute: 59,
        },
      },
      modules: [
        {
          name: "test module",
          assignments: [],
          quizzes: [],
          pages: [],
        },
      ],
    };
    const newCourse: LocalCourse = {
      ...oldCourse,
      modules: [
        {
          name: "test module 2",
          assignments: [],
          quizzes: [],
          pages: [],
        },
      ],
    };

    const differences = CourseDifferences.getDeletedChanges(
      newCourse,
      oldCourse
    );

    expect(differences.namesOfModulesToDeleteCompletely).toHaveLength(1);
    expect(differences.namesOfModulesToDeleteCompletely[0]).toBe("test module");
  });

  it("new assignment name gets deleted", () => {
    const oldCourse: LocalCourse = {
      settings: {
        name: "test course",
        assignmentGroups: [],
        daysOfWeek: [],
        startDate: "07/09/2024 23:59:00",
        endDate: "07/09/2024 23:59:00",
        defaultDueTime: {
          hour: 23,
          minute: 59,
        },
      },
      modules: [
        {
          name: "test module",
          assignments: [
            {
              name: "test assignment",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
          ],
          quizzes: [],
          pages: [],
        },
      ],
    };
    const newCourse: LocalCourse = {
      ...oldCourse,
      modules: [
        {
          name: "test module",
          assignments: [
            {
              name: "test assignment changed name",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
          ],
          quizzes: [],
          pages: [],
        },
      ],
    };

    const differences = CourseDifferences.getDeletedChanges(
      newCourse,
      oldCourse
    );

    expect(differences.namesOfModulesToDeleteCompletely).toHaveLength(0);
    expect(differences.deleteContentsOfModule).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].assignments).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].assignments[0].name).toBe(
      "test assignment"
    );
  });

  it("assignments with changed descriptions do not get deleted", () => {
    const oldCourse: LocalCourse = {
      settings: {
        name: "test course",
        assignmentGroups: [],
        daysOfWeek: [],
        startDate: "07/09/2024 23:59:00",
        endDate: "07/09/2024 23:59:00",
        defaultDueTime: {
          hour: 23,
          minute: 59,
        },
      },
      modules: [
        {
          name: "test module",
          assignments: [
            {
              name: "test assignment",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
          ],
          quizzes: [],
          pages: [],
        },
      ],
    };
    const newCourse: LocalCourse = {
      ...oldCourse,
      modules: [
        {
          name: "test module",
          assignments: [
            {
              name: "test assignment",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
          ],
          quizzes: [],
          pages: [],
        },
      ],
    };

    const differences = CourseDifferences.getDeletedChanges(
      newCourse,
      oldCourse
    );

    expect(differences.deleteContentsOfModule).toHaveLength(0);
  });

  it("can detect changed and unchanged assignments", () => {
    const oldCourse: LocalCourse = {
      settings: {
        name: "test course",
        assignmentGroups: [],
        daysOfWeek: [],
        startDate: "07/09/2024 23:59:00",
        endDate: "07/09/2024 23:59:00",
        defaultDueTime: {
          hour: 23,
          minute: 59,
        },
      },
      modules: [
        {
          name: "test module",
          assignments: [
            {
              name: "test assignment",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
            {
              name: "test assignment 2",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
          ],
          quizzes: [],
          pages: [],
        },
      ],
    };
    const newCourse: LocalCourse = {
      ...oldCourse,
      modules: [
        {
          name: "test module",
          assignments: [
            {
              name: "test assignment",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
            {
              name: "test assignment 2 changed",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              submissionTypes: [],
              allowedFileUploadExtensions: [],
              rubric: [],
            },
          ],
          quizzes: [],
          pages: [],
        },
      ],
    };

    const differences = CourseDifferences.getDeletedChanges(
      newCourse,
      oldCourse
    );

    expect(differences.deleteContentsOfModule).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].assignments).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].assignments[0].name).toBe(
      "test assignment 2"
    );
  });

  it("changed quizzes get deleted", () => {
    const oldCourse: LocalCourse = {
      settings: {
        name: "test course",
        assignmentGroups: [],
        daysOfWeek: [],
        startDate: "07/09/2024 23:59:00",
        endDate: "07/09/2024 23:59:00",
        defaultDueTime: {
          hour: 23,
          minute: 59,
        },
      },
      modules: [
        {
          name: "test module",
          assignments: [],
          quizzes: [
            {
              name: "Test Quiz",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              shuffleAnswers: false,
              showCorrectAnswers: false,
              oneQuestionAtATime: false,
              allowedAttempts: 0,
              questions: [],
            },
            {
              name: "Test Quiz 2",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              shuffleAnswers: false,
              showCorrectAnswers: false,
              oneQuestionAtATime: false,
              allowedAttempts: 0,
              questions: [],
            },
          ],
          pages: [],
        },
      ],
    };
    const newCourse: LocalCourse = {
      ...oldCourse,
      modules: [
        {
          name: "test module",
          assignments: [],
          quizzes: [
            {
              name: "Test Quiz",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              shuffleAnswers: false,
              showCorrectAnswers: false,
              oneQuestionAtATime: false,
              allowedAttempts: 0,
              questions: [],
            },
            {
              name: "Test Quiz 3",
              description: "test description",
              dueAt: "07/09/2024 23:59:00",
              shuffleAnswers: false,
              showCorrectAnswers: false,
              oneQuestionAtATime: false,
              allowedAttempts: 0,
              questions: [],
            },
          ],
          pages: [],
        },
      ],
    };

    const differences = CourseDifferences.getDeletedChanges(
      newCourse,
      oldCourse
    );

    expect(differences.deleteContentsOfModule).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].quizzes).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].quizzes[0].name).toBe(
      "Test Quiz 2"
    );
  });

  it("changed pages get deleted", () => {
    const oldCourse: LocalCourse = {
      settings: {
        name: "test course",
        assignmentGroups: [],
        daysOfWeek: [],
        startDate: "07/09/2024 23:59:00",
        endDate: "07/09/2024 23:59:00",
        defaultDueTime: {
          hour: 23,
          minute: 59,
        },
      },
      modules: [
        {
          name: "test module",
          assignments: [],
          quizzes: [],
          pages: [
            {
              name: "Test Page",
              text: "test contents",
              dueAt: "07/09/2024 23:59:00",
            },
            {
              name: "Test Page 2",
              text: "test contents",
              dueAt: "07/09/2024 23:59:00",
            },
          ],
        },
      ],
    };
    const newCourse: LocalCourse = {
      ...oldCourse,
      modules: [
        {
          name: "test module",
          assignments: [],
          quizzes: [],
          pages: [
            {
              name: "Test Page",
              text: "test contents",
              dueAt: "07/09/2024 23:59:00",
            },
            {
              name: "Test Page 3",
              text: "test contents",
              dueAt: "07/09/2024 23:59:00",
            },
          ],
        },
      ],
    };

    const differences = CourseDifferences.getDeletedChanges(
      newCourse,
      oldCourse
    );

    expect(differences.deleteContentsOfModule).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].pages).toHaveLength(1);
    expect(differences.deleteContentsOfModule[0].pages[0].name).toBe(
      "Test Page 2"
    );
  });
});