import { Asset } from '../cores/models/asset';
import { CrawlService } from '../services';
import { UploadOptionsDto } from '../cores/dto/upload-options-dto';
import { CrawlOptionsDto } from '../cores/dto/crawl-options-dto';
import fs from 'node:fs';
import cliProgress from 'cli-progress';
import byteSize from 'byte-size';
import { BaseCommand } from '../cli/base-command';
import axios, { AxiosRequestConfig, AxiosResponse } from 'axios';
import FormData from 'form-data';

export class Upload extends BaseCommand {
  uploadLength!: number;

  public async run(paths: string[], options: UploadOptionsDto): Promise<void> {
    await this.connect();

    const formatResponse = await this.immichApi.serverInfoApi.getSupportedMediaTypes();
    const crawlService = new CrawlService(formatResponse.data.image, formatResponse.data.video);

    const crawlOptions = new CrawlOptionsDto();
    crawlOptions.pathsToCrawl = paths;
    crawlOptions.recursive = options.recursive;
    crawlOptions.exclusionPatterns = options.exclusionPatterns;
    crawlOptions.includeHidden = options.includeHidden;

    const files: string[] = [];

    for (const pathArgument of paths) {
      const fileStat = await fs.promises.lstat(pathArgument);

      if (fileStat.isFile()) {
        files.push(pathArgument);
      }
    }

    const crawledFiles: string[] = await crawlService.crawl(crawlOptions);

    crawledFiles.push(...files);

    if (crawledFiles.length === 0) {
      console.log('No assets found, exiting');
      return;
    }

    const assetsToUpload = crawledFiles.map((path) => new Asset(path));

    const uploadProgress = new cliProgress.SingleBar(
      {
        format: '{bar} | {percentage}% | ETA: {eta_formatted} | {value_formatted}/{total_formatted}: {filename}',
      },
      cliProgress.Presets.shades_classic,
    );

    let totalSize = 0;
    let sizeSoFar = 0;

    let totalSizeUploaded = 0;
    let uploadCounter = 0;

    for (const asset of assetsToUpload) {
      // Compute total size first
      await asset.prepare();
      totalSize += asset.fileSize;

      if (options.albumName) {
        asset.albumName = options.albumName;
      }
    }

    const existingAlbums = (await this.immichApi.albumApi.getAllAlbums()).data;

    uploadProgress.start(totalSize, 0);
    uploadProgress.update({ value_formatted: 0, total_formatted: byteSize(totalSize) });

    try {
      for (const asset of assetsToUpload) {
        uploadProgress.update({
          filename: asset.path,
        });

        let skipUpload = false;

        let skipAsset = false;
        let existingAssetId: string | undefined = undefined;

        if (!options.skipHash) {
          const assetBulkUploadCheckDto = { assets: [{ id: asset.path, checksum: await asset.hash() }] };

          const checkResponse = await this.immichApi.assetApi.checkBulkUpload({
            assetBulkUploadCheckDto,
          });

          skipUpload = checkResponse.data.results[0].action === 'reject';

          const isDuplicate = checkResponse.data.results[0].reason === 'duplicate';
          if (isDuplicate) {
            existingAssetId = checkResponse.data.results[0].assetId;
          }

          skipAsset = skipUpload && !isDuplicate;
        }

        if (!skipAsset) {
          if (!options.dryRun) {
            if (!skipUpload) {
              const formData = asset.getUploadFormData();
              const res = await this.uploadAsset(formData);
              existingAssetId = res.data.id;
              uploadCounter++;
              totalSizeUploaded += asset.fileSize;
            }

            if ((options.album || options.albumName) && asset.albumName !== undefined) {
              let album = existingAlbums.find((album) => album.albumName === asset.albumName);
              if (!album) {
                const res = await this.immichApi.albumApi.createAlbum({
                  createAlbumDto: { albumName: asset.albumName },
                });
                album = res.data;
                existingAlbums.push(album);
              }

              if (existingAssetId) {
                await this.immichApi.albumApi.addAssetsToAlbum({
                  id: album.id,
                  bulkIdsDto: { ids: [existingAssetId] },
                });
              }
            }
          }
        }

        sizeSoFar += asset.fileSize;

        uploadProgress.update(sizeSoFar, { value_formatted: byteSize(sizeSoFar) });
      }
    } finally {
      uploadProgress.stop();
    }

    let messageStart;
    if (options.dryRun) {
      messageStart = 'Would have';
    } else {
      messageStart = 'Successfully';
    }

    if (uploadCounter === 0) {
      console.log('All assets were already uploaded, nothing to do.');
    } else {
      console.log(`${messageStart} uploaded ${uploadCounter} assets (${byteSize(totalSizeUploaded)})`);
    }
    if (options.delete) {
      if (options.dryRun) {
        console.log(`Would now have deleted assets, but skipped due to dry run`);
      } else {
        console.log('Deleting assets that have been uploaded...');
        const deletionProgress = new cliProgress.SingleBar(cliProgress.Presets.shades_classic);
        deletionProgress.start(crawledFiles.length, 0);

        for (const asset of assetsToUpload) {
          if (!options.dryRun) {
            await asset.delete();
          }
          deletionProgress.increment();
        }
        deletionProgress.stop();
        console.log('Deletion complete');
      }
    }
  }

  private async uploadAsset(data: FormData): Promise<AxiosResponse> {
    const url = this.immichApi.apiConfiguration.instanceUrl + '/asset/upload';

    const config: AxiosRequestConfig = {
      method: 'post',
      maxRedirects: 0,
      url,
      headers: {
        'x-api-key': this.immichApi.apiConfiguration.apiKey,
        ...data.getHeaders(),
      },
      maxContentLength: Infinity,
      maxBodyLength: Infinity,
      data,
    };

    const res = await axios(config);
    return res;
  }
}