import { Injectable } from "@nestjs/common";
import { and, desc, eq, isNull } from "drizzle-orm";
import { DatabaseService } from "../../database/database.service";
import { comments, users } from "../../database/schemas";
import type { NewCommentInDb } from "../../database/schemas/comments";

@Injectable()
export class CommentsRepository {
	constructor(private readonly databaseService: DatabaseService) {}

	async create(data: NewCommentInDb) {
		const results = await this.databaseService.db
			.insert(comments)
			.values(data)
			.returning();
		return results[0];
	}

	async findAllByContentId(contentId: string) {
		return this.databaseService.db
			.select({
				id: comments.id,
				text: comments.text,
				parentId: comments.parentId,
				createdAt: comments.createdAt,
				updatedAt: comments.updatedAt,
				user: {
					uuid: users.uuid,
					username: users.username,
					displayName: users.displayName,
					avatarUrl: users.avatarUrl,
				},
			})
			.from(comments)
			.innerJoin(users, eq(comments.userId, users.uuid))
			.where(and(eq(comments.contentId, contentId), isNull(comments.deletedAt)))
			.orderBy(desc(comments.createdAt));
	}

	async findOne(id: string) {
		const results = await this.databaseService.db
			.select()
			.from(comments)
			.where(and(eq(comments.id, id), isNull(comments.deletedAt)));
		return results[0];
	}

	async delete(id: string) {
		await this.databaseService.db
			.update(comments)
			.set({ deletedAt: new Date() })
			.where(eq(comments.id, id));
	}
}