import { Injectable } from '@nestjs/common';
import { PrismaService } from '../../infrastructure/database/prisma.service';

@Injectable()
export class KnowledgeBaseRepository {
  constructor(private readonly prisma: PrismaService) {}

  async create(userId: string, dto: { title: string; description?: string }) {
    return this.prisma.knowledgeBase.create({
      data: {
        userId,
        title: dto.title,
        description: dto.description ?? '',
        status: 'active',
        itemCount: 0,
      },
    });
  }

  async findById(id: string) {
    return this.prisma.knowledgeBase.findUnique({ where: { id } });
  }

  async findAllByUserId(userId: string) {
    return this.prisma.knowledgeBase.findMany({
      where: { userId, deletedAt: null },
      orderBy: { updatedAt: 'desc' },
    });
  }

  async countByUserId(userId: string) {
    return this.prisma.knowledgeBase.count({
      where: { userId, deletedAt: null },
    });
  }

  async update(id: string, dto: { title?: string; description?: string }) {
    return this.prisma.knowledgeBase.update({
      where: { id },
      data: dto,
    });
  }

  async softDelete(id: string) {
    await this.prisma.knowledgeBase.update({
      where: { id },
      data: { deletedAt: new Date() },
    });
    return true;
  }
}