import { Injectable } from '@angular/core';
import { z } from 'zod';
import { AttachmentRemoteDataSourceService } from 'src/app/module/chat/data/repository/attachment/attachment-remote-repository.service'
import { AttachmentLocalDataSource } from 'src/app/module/chat/data/repository/attachment/attachment-local-repository.service'
import { createBlobUrl } from 'src/app/utils/ToBase64';
import { err, Result } from 'neverthrow';
import { MessageEntitySchema } from '../../../../../core/chat/entity/message';
import { TracingType, XTracerAsync } from 'src/app/services/monitoring/opentelemetry/tracer';
import { isHttpResponse } from 'src/app/infra/http/http.service';

const MessageAttachmentByMessageIdSchema = MessageEntitySchema.pick({
  $id: true,
  id: true,
  attachments: true,
})

export type MessageAttachmentByMessageIdInput = z.infer<typeof MessageAttachmentByMessageIdSchema>

@Injectable({
  providedIn: 'root'
})
export class MessageAttachmentByMessageIdUseCase {

  constructor(
    private AttachmentRemoteDataSourceService: AttachmentRemoteDataSourceService,
    private AttachmentLocalDataSource: AttachmentLocalDataSource
  ) { }

  @XTracerAsync({name:'Message-Attachment-By-MessageIdUseCase', module:'chat',  bugPrint: true, waitNThrow: 15000})
  async execute(input: MessageAttachmentByMessageIdInput, tracing?: TracingType): Promise<Result<string, any>> {

    tracing.setAttribute('messageId', input.id)

    const getLocalAttachment = await this.AttachmentLocalDataSource.findOne({
      $messageId: input.$id
    })

    if(getLocalAttachment.isOk() && getLocalAttachment.value) {
      tracing.setAttribute('download', 'false')

      // has blob
      if(getLocalAttachment.value.file) {
        const dataUrl = await createBlobUrl(getLocalAttachment.value.file)

        if(dataUrl.isOk()) {
          return dataUrl
        } else {
          return dataUrl
        }
      } else {
        // has data url
        return getLocalAttachment.map((e) => {

          // Logger.info('restored file .', {
          //   data: e.base64.slice(0, 100)+'...'
          // })

          return e.base64
        })
      }


    } else {
      tracing.setAttribute('download', 'true')
      tracing.setAttribute('attachmentId',  input.attachments[0].id.toString())

      const httpResult = await this.AttachmentRemoteDataSourceService.getAttachment(input.attachments[0].id)
      if(httpResult.isErr()) {
        tracing.hasError('failed to download message attachment', {
          error: httpResult.error,
          data: 'document id '+ input.attachments[0].id,
          messageId: input.id,
          $messageId: input.$id
        })

        if(isHttpResponse(httpResult.error)) {
          tracing.setAttribute('attachmentUrl', httpResult.error.message)
        }
      }


      if(httpResult.isOk()) {

        const dataUrl = await createBlobUrl(httpResult.value.data)

        if(dataUrl.isOk()) {

          //console.log('done convert')
          //Logger.info('downloaded file .', {
            // data: dataUrl.value.slice(0, 100)+'...'
          //})

          this.AttachmentLocalDataSource.insert({
            $messageId: input.$id,
            file: httpResult.value.data,
            fileType: input.attachments[0].fileType,
            source: input.attachments[0].source,
            fileName: input.attachments[0].fileName,
            applicationId: input.attachments[0].applicationId,
            docId: input.attachments[0].docId,
            mimeType: input.attachments[0].mimeType,
          }).then((e) => {
            if(e.isErr()) {
              tracing.hasError('failed to create attachment locally on send message', {
                error: e.error,
                // data: dataUrl.value.slice(0, 100)+'...'
              })
            }
          })

          return dataUrl
        } else {
          console.log('dataUrl eerror', dataUrl.error, 'url:,', httpResult.value)
          return err(false)
        }


      } else {
        return httpResult as any
      }

    }

  }
}