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import { CreateMaterialDto } from "./dto/create-material.dto";
import { UpdateMaterialDto } from "./dto/update-material.dto";
import { InjectRepository } from "@nestjs/typeorm";
import { Material } from "./entities/material.entity";
import { ExpertiseException } from "src/expertise/expertise.service";
import { Repository } from "typeorm";
import { Expertise } from "src/expertise/entities/expertise.entity";
import { ScoreService } from "src/score/score.service";
import { User } from "src/user/entities/user.entity";
type MaterialError =
| "MATERIAL DOESNT EXIST";
export class MaterialException extends Error {
name: MaterialError;
constructor(name: MaterialError) {
super();
this.name = name;
}
}
@Injectable()
export class MaterialService {
constructor(
@InjectRepository(Material)
private materialRepository: Repository<Material>,
private scoreService: ScoreService,
) { }
async create(
{ title, content, expertise, postDate }: CreateMaterialDto,
username: string,
): Promise<Material> {
try {
const { id } = await this.materialRepository.save({
user: { username },
title,
content,
postDate,
expertise: {
title: expertise,
users: [],
},
});
return this.findOne(id, username);
} catch (error) {
throw new ExpertiseException("EXPERTISE DOESNT EXIST");
}
}
async findAll(username: string) {
const materials = await this.materialRepository.find({
relations: {
expertise: true,
user: {
badges: true,
currentBadge: true,
expertises: true,
},
}
});
return Promise.all(
materials.map(async material => ({
...material,
score: await this.scoreService.getPostScore(material.id),
userScore: await this.scoreService.getUserScoreOnPost(material.id, username) ?? 0,
}))
);
}
async getRecents(username: string) {
const materials = await this.materialRepository.find({
relations: {
expertise: true,
user: {
badges: true,
currentBadge: true,
expertises: true,
},
},
order: {
postDate: "DESC"
}
});
return Promise.all(
materials.map(async material => ({
...material,
score: await this.scoreService.getPostScore(material.id),
userScore: await this.scoreService.getUserScoreOnPost(material.id, username) ?? 0
}))
);
}
async getForYou(username: string) {
const materials = await this.materialRepository.createQueryBuilder("material")
.select()
.leftJoinAndSelect("material.expertise", "expertise")
.leftJoinAndSelect("material.user", "user")
.leftJoinAndSelect("user.currentBadge", "badge")
.leftJoinAndSelect("user.badges", "badges")
.leftJoinAndSelect("user.expertises", "expertises")
.where(qb => {
const subquery = qb.subQuery()
.select()
.from(User, "user")
.leftJoinAndSelect("user.expertises", "expertises")
.where("user.username = :username", { username })
.getQuery();
return "material.expertise in " + subquery;
})
.getMany();
return (await Promise.all(
materials.map(async material => ({
...material,
score: await this.scoreService.getPostScore(material.id),
userScore: await this.scoreService.getUserScoreOnPost(material.id, username) ?? 0
}))
)).sort((a, b) => b.score - a.score);
}
async find(usernameTarget: string, usernameViewer: string) {
const materials = await this.materialRepository.find({
where: {
user: {
username: usernameTarget,
},
},
relations: {
expertise: true,
user: {
badges: true,
currentBadge: true,
expertises: true,
},
},
});
return Promise.all(
materials.map(async material => ({
...material,
score: await this.scoreService.getPostScore(material.id),
userScore: await this.scoreService.getUserScoreOnPost(material.id, usernameViewer) ?? 0,
}))
);
}
async findOne(id: number, username: string) {
const material = await this.materialRepository.findOne({
where: {
id
},
relations: {
expertise: true,
user: {
badges: true,
currentBadge: true,
expertises: true,
},
},
});
if (material) {
return {
...material,
score: await this.scoreService.getPostScore(id),
userScore: await this.scoreService.getUserScoreOnPost(id, username) ?? 0,
};
} else {
throw new MaterialException("MATERIAL DOESNT EXIST");
}
}
async update(id: number, username: string, updateMaterialDto: UpdateMaterialDto) {
const expertiseEntity = new Expertise();
expertiseEntity.title = updateMaterialDto.expertise ?? "";
const parsedDto = {
...updateMaterialDto,
expertise: expertiseEntity,
};
return (
await this.materialRepository.update({ id, user: { username } }, parsedDto)
)!.affected! > 0;
}
async remove(id: number, username: string) {
return (
await this.materialRepository.delete({ id, user: { username } })
)!.affected! > 0;
}
}
|