// import { Injectable } from '@nestjs/common';
// import { PrismaService } from '../prisma/prisma.service';
// //import { Document } from '@prisma/client';

// @Injectable()
// export class DocumentsService {
//   downloadDocument(key: string, id: any) {
//     throw new Error('Method not implemented.');
//   }
//   constructor(private readonly prisma: PrismaService) {}

//   async getClientDocuments(clientId: number) {
//     // return this.prisma.document.findMany({
//     //   where: {
//     //     sharedWithId: clientId,
//     //   },
//     //   include: {
//     //     sharedWith: {
//     //       select: {
//     //         id: true,
//     //         name: true,
//     //         email: true,
//     //       },
//     //     },
//     //   },
//     // });
//     return this.prisma.document.findMany({
//       where: {
//         sharedWithId: clientId,
//       },
//       orderBy: {
//         createdAt: 'desc',
//       },
//     });
//   }
// }
import { Injectable, NotFoundException, UnauthorizedException } from '@nestjs/common';
import { PrismaService } from '../prisma/prisma.service';
import { S3Service } from '../s3/s3.service';
import { Document, User } from '@prisma/client';

@Injectable()
export class DocumentsService {
  constructor(
    private prisma: PrismaService,
    private s3Service: S3Service,
  ) {}

  async findAllByClient(userId: number): Promise<Document[]> {
    const documents = await this.prisma.document.findMany({
      where: {
        sharedWithId: userId,
      },
      include: {
        sharedWith: {
          select: {
            id: true,
            name: true,
            email: true,
          },
        },
      },
      orderBy: {
        createdAt: 'desc',
      },
    });

    return documents;
  }
  async getClientDocuments(clientId: number) {
        // return this.prisma.document.findMany({
        //   where: {
        //     sharedWithId: clientId,
        //   },
        //   include: {
        //     sharedWith: {
        //       select: {
        //         id: true,
        //         name: true,
        //         email: true,
        //       },
        //     },
        //   },
        // });
        return this.prisma.document.findMany({
          where: {
            sharedWithId: clientId,
          },
          orderBy: {
            createdAt: 'desc',
          },
        });
      }

  async downloadDocument(s3Key: string, userId: number): Promise<any> {
    // Verify document exists and user has access
    const document = await this.prisma.document.findFirst({
      where: {
        s3Key: s3Key,
        sharedWithId: userId,
      },
    });

    if (!document) {
      throw new NotFoundException('Document not found or access denied');
    }

    try {
      // Get document stream from S3
      const fileStream = await this.s3Service.getObject(s3Key).createReadStream();
      return fileStream;
    } catch (error) {
      console.error('Error downloading document:', error);
      throw new NotFoundException('Document file not found in storage');
    }
  }

  async getAllDocuments(): Promise<Document[]> {
    return this.prisma.document.findMany({
      include: {
        sharedWith: {
          select: {
            id: true,
            name: true,
            email: true,
          },
        },
      },
      orderBy: {
        createdAt: 'desc',
      },
    });
  }

  async shareDocument(documentId: number, userId: number): Promise<Document> {
    const document = await this.prisma.document.update({
      where: { id: documentId },
      data: {
        sharedWithId: userId,
      },
      include: {
        sharedWith: {
          select: {
            id: true,
            name: true,
            email: true,
          },
        },
      },
    });

    return document;
  }

  async updateStatus(documentId: number, status: string): Promise<Document> {
    return this.prisma.document.update({
      where: { id: documentId },
      data: { status },
      include: {
        sharedWith: {
          select: {
            id: true,
            name: true,
            email: true,
          },
        },
      },
    });
  }
}