import {Injectable} from "@nestjs/common";
import {ProgramGroupMessageEntity, ReadDto} from "../entity";
import {RedisService} from "./redis.service";
import {ResultData} from "../const/result";
import {InjectRepository} from "@nestjs/typeorm";
import {Repository} from "typeorm";

@Injectable()
export class MessageService {
    constructor(
        private readonly redisService: RedisService,
        @InjectRepository(ProgramGroupMessageEntity) private readonly messageRepository: Repository<ProgramGroupMessageEntity>,
    ) {
    }

    // 获取未读消息
    async getUnread(readDto: ReadDto) {
        let data = await this.redisService.getValue(`${readDto.groupId}_${readDto.userId}`)
        data = data == null ? [] : JSON.parse(data)
        return ResultData.success(data)
    }

    // 未读 -> 已读
    async read(readDto: ReadDto) {
        this.redisService.delValue(`${readDto.groupId}_${readDto.userId}`)
        return ResultData.success()
    }

    async getList(message: ProgramGroupMessageEntity) {
        let queryBuilder = this.messageRepository.createQueryBuilder("message")

        queryBuilder.leftJoinAndMapOne("message.userInfo", "users", "user", "message.create_id = user.id")

        let [item, total] = await queryBuilder.getManyAndCount()

        return ResultData.success({
            list: item,
            total
        })

    }
}