import { Injectable } from '@nestjs/common';
import Test from './test.entity';
import { firstValueFrom } from 'rxjs';
import { HttpService } from "@nestjs/axios";
import { Utility } from 'src/common/Utility';

@Injectable()
export class TestService {
    constructor(private readonly httpService: HttpService) { }

    async findAll(): Promise<{ rows: Test[], count: number }> {
        return Test.findAndCountAll();
    }

    async findByPk(id: number): Promise<Test> {
        
        const test =  Test.findByPk(id,)
        const textbookExists = await this.checkTextbookExists((await test).textbookId);
            if (!textbookExists.data.author) return;
            console.log(textbookExists.data.author);
        return test
    }

    findOne(test: Test): Promise<Test> {
        return Test.findOne({ where: test as any, })
    }

    filter(test: Test): Promise<Test[]> {
        return Test.findAll({ where: test as any, })
    }

    async remove(id: number): Promise<number> {
        return Test.destroy({ where: { id: id } });
    }

    async upsert(test: Test, insertIfNotFound: boolean): Promise<Test | [affectedCount: number]> {
        if (test.id) {
            const existingTest = await this.findByPk(test.id);
            if (existingTest) {
                return Test.update(test, { where: { id: test.id } });
            }
        }
        if (insertIfNotFound) {
            const textbookExists = await this.checkTextbookExists(test.textbookId);
            if (!textbookExists) return;
            return Test.create(test as any)
        }
    }
    async checkTextbookExists(textbookId: number): Promise<any> {
        const textbook = await firstValueFrom(this.httpService.get(`${Utility.urlConfig.textbookBaseUrl}${textbookId}`));
        return textbook.data;
    }
}