package ru.oa2.lti;

import jakarta.transaction.Transactional;
import org.springframework.stereotype.Service;
import ru.oa2.lti.model.LtiLogin;
import ru.oa2.lti.model.TaskData;
import ru.oa2.lti.repository.LMSContentRepository;
import ru.oa2.lti.repository.entities.LMSContent;
import ru.oa2.lti.repository.entities.Task;
import ru.oa2.lti.service.jwt.JwtService;
import ru.oa2.lti.service.jwt.Payload;

import java.util.Collection;
import java.util.UUID;

@Service
@Transactional
public class ApplicationService {

    private final JwtService jwtService;
    private final LMSContentRepository lmsContentRepository;

    public ApplicationService(JwtService jwtService,
                              LMSContentRepository lmsContentRepository) {
        this.jwtService = jwtService;
        this.lmsContentRepository = lmsContentRepository;
    }

    public Payload getPayload(LtiLogin ltiLogin) {
        return jwtService.getPayload(ltiLogin.getLoginHint());
    }

    public String getTask(UUID contextId) {

        var content = lmsContentRepository.getLMSContentByContentId(contextId);

        if(content.isPresent()) {
            LMSContent lmsContent = content.get();
            Collection<Task> tasks = lmsContent.getTasks();

            //TODO добавить версию в Task и выбирать самую старшую и опубликованную
            TaskData data = tasks.stream().findFirst().get().getData();

            //TODO запуск initScript
            return data.getDescription();
        } else {
            return "Not Page";
        }
    }

    public String saveResult(String body) {

        //TODO
        return "{\n" +
                "  \"success\": true,\n" +
                "  \"message\": \"Результат успешно получен и обработан\",\n" +
                "  \"data\": {\n" +
                "    \"contextId\": \"ctx-12345\",\n" +
                "    \"participantId\": \"usr-67890\",\n" +
                "    \"submittedText\": \"console.log('Hello');\",\n" +
                "    \"timestamp\": \"2025-12-14T17:55:30Z\",\n" +
                "    \"status\": \"processed\"\n" +
                "  }\n" +
                "}";
    }
}