import response from "../../response.js";
import models from "../../models/index.js";
import { createMonitoring } from "../monitoringControllers/monitoring.js";

export const getStdLearnings = async (req, res) => {
  try {
    const stdLearning = await models.StdLearning.findAll();
    response(200, stdLearning, "Success", res);
  } catch (error) {
    console.log(error);
    response(500, null, "Error retrieving student learning data!", res);
  }
};

export const getStdLearningById = async (req, res) => {
  try {
    const { id } = req.params;
    const stdLearning = await models.StdLearning.findByPk(id);

    if (!stdLearning) {
      return response(404, null, "Student learning data not found", res);
    }

    response(200, stdLearning, "Success", res);
  } catch (error) {
    response(500, null, "Internal Server Error", res);
  }
};

export const createStdLearning = async (req, res) => {
  const { ID_LEVEL } = req.body;

  if (!req.user) {
    return response(401, null, "User not authenticated", res);
  }

  if (!ID_LEVEL) {
    return response(400, null, "Level ID is required", res);
  }

  const ID = req.user.ID;

  try {
    const level = await models.Level.findByPk(ID_LEVEL);
    if (!level) {
      return response(404, null, "Level not found", res);
    }

    const newStdLearning = await models.StdLearning.create({
      ID,
      ID_LEVEL,
    });

    response(
      201,
      newStdLearning,
      "Student Learning data created successfully",
      res
    );
  } catch (error) {
    console.log(error);
    response(500, null, "Internal Server Error", res);
  }
};

export const updateStdLearningById = async (req, res) => {
  const { id } = req.params;
  const { FEEDBACK_STUDENT } = req.body;

  try {
    const stdLearning = await models.StdLearning.findByPk(id, {
      include: [
        {
          model: models.Level,
          as: "level",
        },
      ],
    });

    if (!stdLearning) {
      return response(404, null, "Student Learning record not found", res);
    }

    stdLearning.STUDENT_FINISH = new Date();
    stdLearning.SCORE = req.body.SCORE;
    stdLearning.NEXT_LEARNING = req.body.NEXT_LEARNING;
    stdLearning.IS_PASS = req.body.IS_PASS;

    if (FEEDBACK_STUDENT) {
      stdLearning.FEEDBACK_STUDENT = FEEDBACK_STUDENT;
    }

    await stdLearning.save();

    const level6 = await models.Level.findOne({
      where: {
        NAME_LEVEL: "Level 6",
        ID_TOPIC: stdLearning.level.ID_TOPIC,
      },
    });

    if (!level6) {
      return response(404, null, "Level 6 not found", res);
    }

    if (
      stdLearning.level.ID_LEVEL === level6.ID_LEVEL &&
      stdLearning.IS_PASS === 1
    ) {
      req.body.ID_STUDENT_LEARNING = id;

      const existingMonitoring = await models.Monitoring.findOne({
        where: { ID_STUDENT_LEARNING: id },
      });

      if (!existingMonitoring) {
        const newMonitoring = await createMonitoring(req);

        const { level, ...responseData } = stdLearning.toJSON();

        const combinedPayload = {
          ...responseData,
          MONITORING: newMonitoring,
        };

        return response(
          200,
          combinedPayload,
          "Student Learning record updated and monitoring created successfully",
          res
        );
      }
    } else {
      const monitoringToDelete = await models.Monitoring.findOne({
        where: { ID_STUDENT_LEARNING: id },
      });

      if (monitoringToDelete) {
        await monitoringToDelete.destroy();
      }
    }

    const { level, ...responseData } = stdLearning.toJSON();

    response(
      200,
      responseData,
      "Student Learning record updated successfully",
      res
    );
  } catch (error) {
    console.log(error);
    response(500, null, "Internal Server Error", res);
  }
};

export const learningScoreByStdLearningId = async (req, res) => {
  try {
    if (!req.user) {
      return response(401, null, "User not authenticated", res);
    }

    const { ID } = req.user;
    const { stdLearningId } = req.params;

    const stdLearning = await models.StdLearning.findOne({
      where: {
        ID_STUDENT_LEARNING: stdLearningId,
        ID: ID,
      },
      include: [
        {
          model: models.Level,
          as: "level",
          attributes: ["ID_LEVEL", "NAME_LEVEL"],
        },
        {
          model: models.Level,
          as: "nextLevel",
          attributes: ["NAME_LEVEL"],
        },
        {
          model: models.User,
          as: "learningUser",
          attributes: ["NAME_USERS"],
          include: [
            {
              model: models.Student,
              as: "students",
              attributes: ["NISN"],
            },
          ],
        },
      ],
    });

    if (!stdLearning) {
      return response(
        404,
        null,
        "No matching learning data found for this user",
        res
      );
    }

    if (!stdLearning.NEXT_LEARNING || !stdLearning.nextLevel) {
      return response(200, null, "No next learning level found", res);
    }

    const nextLearningData = {
      ID_STUDENT_LEARNING: stdLearning.ID_STUDENT_LEARNING,
      NAME_USERS: stdLearning.learningUser.NAME_USERS,
      NISN: stdLearning.learningUser.students
        ? stdLearning.learningUser.students.NISN
        : null,
      ID_LEVEL: stdLearning.level ? stdLearning.level.ID_LEVEL : null,
      CURRENT_LEVEL_NAME: stdLearning.level ? stdLearning.level.NAME_LEVEL : null,
      SCORE: stdLearning.SCORE,
      NEXT_LEARNING: stdLearning.NEXT_LEARNING,
      NEXT_LEARNING_NAME: stdLearning.nextLevel.NAME_LEVEL,
      IS_PASS: stdLearning.IS_PASS,
    };

    return response(200, nextLearningData, "Success", res);
  } catch (error) {
    console.log(error);
    return response(500, null, "Internal Server Error", res);
  }
};

export const learningHistory = async (req, res) => {
  try {
    if (!req.user) {
      return response(401, null, "User not authenticated", res);
    }

    const { ID } = req.user;

    const stdLearnings = await models.StdLearning.findAll({
      where: {
        ID: ID,
      },
      include: [
        {
          model: models.Level,
          as: "level",
          include: [
            {
              model: models.Topic,
              as: "levelTopic",
              include: [
                {
                  model: models.Section,
                  as: "topicSection",
                },
              ],
            },
          ],
        },
      ],
    });

    const result = await Promise.all(
      stdLearnings.map(async (learning) => {
        let nextLevelName = null;
        if (learning.NEXT_LEARNING) {
          const nextLevel = await models.Level.findOne({
            where: { ID_LEVEL: learning.NEXT_LEARNING },
          });
          if (nextLevel) {
            nextLevelName = nextLevel.NAME_LEVEL;
          }
        }

        return {
          SCORE: learning.SCORE,
          CURRENT_LEVEL: learning.level.NAME_LEVEL,
          NEXT_LEVEL: nextLevelName,
          STUDENT_FINISH: learning.STUDENT_FINISH,
          TOPIC_NAME: learning.level.levelTopic.NAME_TOPIC,
          SECTION_NAME: learning.level.levelTopic.topicSection.NAME_SECTION,
        };
      })
    );

    response(200, result, "Success", res);
  } catch (error) {
    console.log(error);
    response(500, null, "Internal Server Error", res);
  }
};

export const learningHistoryBySectionId = async (req, res) => {
  try {
    if (!req.user) {
      return response(401, null, "User not authenticated", res);
    }

    const { ID } = req.user;
    const { sectionId } = req.params;

    const stdLearnings = await models.StdLearning.findAll({
      where: {
        ID: ID,
      },
      include: [
        {
          model: models.Level,
          as: "level",
          include: [
            {
              model: models.Topic,
              as: "levelTopic",
              include: [
                {
                  model: models.Section,
                  as: "topicSection",
                  where: { ID_SECTION: sectionId },
                },
              ],
            },
          ],
        },
      ],
    });

    if (!stdLearnings.length) {
      return response(
        404,
        null,
        "No learning history found for the specified section",
        res
      );
    }

    const result = await Promise.all(
      stdLearnings.map(async (learning) => {
        let nextLevelName = null;
        if (learning.NEXT_LEARNING) {
          const nextLevel = await models.Level.findOne({
            where: { ID_LEVEL: learning.NEXT_LEARNING },
          });
          if (nextLevel) {
            nextLevelName = nextLevel.NAME_LEVEL;
          }
        }

        return {
          SCORE: learning.SCORE,
          CURRENT_LEVEL: learning.level.NAME_LEVEL,
          NEXT_LEVEL: nextLevelName,
          STUDENT_FINISH: learning.STUDENT_FINISH,
          TOPIC_NAME: learning.level.levelTopic.NAME_TOPIC,
          SECTION_NAME: learning.level.levelTopic.topicSection.NAME_SECTION,
        };
      })
    );

    response(200, result, "Success", res);
  } catch (error) {
    console.log(error);
    response(500, null, "Internal Server Error", res);
  }
};

export const learningHistoryByTopicId = async (req, res) => {
  try {
    if (!req.user) {
      return response(401, null, "User not authenticated", res);
    }

    const { ID } = req.user;
    const { topicId } = req.params;

    if (!topicId) {
      return response(400, null, "Topic ID is required", res);
    }

    const stdLearnings = await models.StdLearning.findAll({
      where: {
        ID: ID,
      },
      include: [
        {
          model: models.Level,
          as: "level",
          include: [
            {
              model: models.Topic,
              as: "levelTopic",
              where: { ID_TOPIC: topicId },
              include: [
                {
                  model: models.Section,
                  as: "topicSection",
                },
              ],
            },
          ],
        },
      ],
    });

    const result = await Promise.all(
      stdLearnings.map(async (learning) => {
        let nextLevelName = null;
        if (learning.NEXT_LEARNING) {
          const nextLevel = await models.Level.findOne({
            where: { ID_LEVEL: learning.NEXT_LEARNING },
          });
          if (nextLevel) {
            nextLevelName = nextLevel.NAME_LEVEL;
          }
        }

        return {
          SCORE: learning.SCORE,
          CURRENT_LEVEL: learning.level.NAME_LEVEL,
          NEXT_LEVEL: nextLevelName,
          STUDENT_FINISH: learning.STUDENT_FINISH,
          TOPIC_NAME: learning.level.levelTopic.NAME_TOPIC,
          SECTION_NAME: learning.level.levelTopic.topicSection.NAME_SECTION,
        };
      })
    );

    response(200, result, "Success", res);
  } catch (error) {
    console.error(error);
    response(500, null, "Internal Server Error", res);
  }
};

export const getLastCreatedStdLearningByLevelId = async (req, res) => {
  try {
    if (!req.user) {
      return response(401, null, "User not authenticated", res);
    }

    const { ID } = req.user;
    const { levelId } = req.params;

    if (!levelId) {
      return response(400, null, "Level ID is required", res);
    }

    const latestStdLearning = await models.StdLearning.findOne({
      where: {
        ID: ID,
        ID_LEVEL: levelId,
      },
      order: [["STUDENT_START", "DESC"]],
    });

    if (!latestStdLearning) {
      return response(404, null, "No StdLearning data found", res);
    }

    response(200, latestStdLearning, "Success", res);
  } catch (error) {
    console.error(error);
    response(500, null, "Internal Server Error", res);
  }
};