import { fetcher } from '@cloudron/pankow';
import { sanitize } from '@cloudron/pankow/utils';

const BASE_URL = import.meta.env.BASE_URL || '/';

export function createDirectoryModel(origin, accessToken, api) {
  const ownersModel = [{
      uid: 0,
      label: 'root'
    }, {
      uid: 33,
      label: 'www-data'
    }, {
      uid: 808,
      label: 'yellowtent'
    }, {
      uid: 1000,
      label: 'cloudron'
    }, {
      uid: 1001,
      label: 'git'
  }];

  return {
    name: 'DirectoryModel',
    ownersModel,
    buildFilePath(filePath, fileName) {
        // remove leading and trailing slashes
      while (filePath.startsWith('/')) filePath = filePath.slice(1);
      while (filePath.endsWith('/')) filePath = filePath.slice(0, -1);

      return encodeURIComponent(`${filePath}${filePath ? '/' : ''}${fileName}`);
    },
    async listFiles(path) {
      let error, result;
      try {
        result = await fetcher.get(`${origin}/api/v1/${api}/files/${path}`, { access_token: accessToken });
      } catch (e) {
        error = e;
      }

      if (error || result.status !== 200) {
        if (error.status === 404) return [];

        console.error('Failed to list files', error || result.status);
        return [];
      }

      // this prepares the entries to be compatible with all components
      result.body.entries.forEach(item => {
        item.id = item.fileName;
        item.name = item.fileName;
        item.folderPath = path;
        item.modified = new Date(item.mtime);
        item.type = item.isDirectory ? 'directory' : 'file',
        item.icon = `${BASE_URL}mime-types/${item.mimeType === 'inode/symlink' ? 'none' : item.mimeType.split('/').join('-')}.svg`;
        item.previewUrl = '';

        // if we have an image, attach previewUrl
        if (item.mimeType.indexOf('image/') === 0) {
          if (item.mimeType === 'image/vnd.adobe.photoshop') item.icon = `${BASE_URL}mime-types/image-x-generic.svg`;
          else item.previewUrl = `${origin}/api/v1/${api}/files/${encodeURIComponent(path + '/' + item.fileName)}?access_token=${accessToken}`;
        }

        item.owner = item.uid;
        if (ownersModel.find((m) => m.uid === item.uid)) item.owner = ownersModel.find((m) => m.uid === item.uid).label;
      });

      return result.body.entries;
    },
    upload(targetDir, file, progressHandler) {
      // file may contain a file name or a file path + file name
      const relativefilePath = (file.webkitRelativePath ? file.webkitRelativePath : file.name);

      const xhr = new XMLHttpRequest();
      const req = new Promise(function (resolve, reject) {
        xhr.addEventListener('load', () => {
          if (xhr.status >= 200 && xhr.status < 300) {
            resolve(xhr.response);
          } else {
            reject({
              status: xhr.status,
              statusText: xhr.statusText
            });
          }
        });
        xhr.addEventListener('error', () => {
          reject({
            status: xhr.status,
            statusText: xhr.statusText
          });
        });
        xhr.upload.addEventListener('progress', (event) => {
          if (event.loaded) progressHandler({ direction: 'upload', loaded: event.loaded});
        });

        xhr.open('POST', `${origin}/api/v1/${api}/files/${encodeURIComponent(sanitize(targetDir + '/' + relativefilePath))}?access_token=${accessToken}&overwrite=true`);

        xhr.setRequestHeader('Content-Type', 'application/octet-stream');

        xhr.send(file);
      });

      // attach for upstream xhr.abort()
      req.xhr = xhr;

      return req;
    },
    async newFile(filePath) {
      await this.save(filePath, '');
    },
    async newFolder(folderPath) {
      await fetcher.post(`${origin}/api/v1/${api}/files/${folderPath}`, {}, { directory: true, access_token: accessToken });
    },
    async remove(filePath) {
      await fetcher.del(`${origin}/api/v1/${api}/files/${filePath}`, null, { access_token: accessToken });
    },
    async rename(fromFilePath, toFilePath, overwrite = false) {
      return await fetcher.put(`${origin}/api/v1/${api}/files/${fromFilePath}`, { action: 'rename', newFilePath: sanitize(toFilePath), overwrite }, { access_token: accessToken });
    },
    async copy(fromFilePath, toFilePath) {
      return await fetcher.put(`${origin}/api/v1/${api}/files/${fromFilePath}`, { action: 'copy', newFilePath: sanitize(toFilePath) }, { access_token: accessToken });
    },
    async chown(filePath, uid) {
      await fetcher.put(`${origin}/api/v1/${api}/files/${filePath}`, { action: 'chown', uid: uid, recursive: true  }, { access_token: accessToken });
    },
    async extract(path) {
      await fetcher.put(`${origin}/api/v1/${api}/files/${path}`, { action: 'extract' }, { access_token: accessToken });
    },
    async download(path) {
      window.open(`${origin}/api/v1/${api}/files/${path}?download=true&access_token=${accessToken}`);
    },
    async save(filePath, content) {
      const file = new File([content], 'file');

      const req = new Promise(function (resolve, reject) {
        var xhr = new XMLHttpRequest();

        xhr.addEventListener('load', () => {
          if (xhr.status >= 200 && xhr.status < 300) {
            resolve(xhr.response);
          } else {
            reject({
              status: xhr.status,
              statusText: xhr.statusText
            });
          }
        });
        xhr.addEventListener('error', () => {
          reject({
            status: xhr.status,
            statusText: xhr.statusText
          });
        });

        xhr.open('POST', `${origin}/api/v1/${api}/files/${filePath}?access_token=${accessToken}&overwrite=true`);

        xhr.setRequestHeader('Content-Type', 'application/octet-stream');
        xhr.setRequestHeader('Content-Length', file.size);

        xhr.send(file);
      });

      await req;
    },
    async getFile(path) {
      let result;
      try {
        result = await fetch(`${origin}/api/v1/${api}/files/${path}?access_token=${accessToken}`);
      } catch (error) {
        console.error('Failed to get file', error);
        return null;
      }

      const text = await result.text();
      return text;
    },
    async paste(targetDir, action, files) {
      // this will not overwrite but tries to find a new unique name to past to
      for (const f in files) {
        let done = false;
        let targetPath = targetDir + '/' + files[f].name;
        while (!done) {
          let result;
          if (action === 'cut') result = await this.rename(this.buildFilePath(files[f].folderPath, files[f].name), targetPath);
          if (action === 'copy') result = await this.copy(this.buildFilePath(files[f].folderPath, files[f].name), targetPath);

          if (result.status === 404) {
            throw `Source file "${files[f].name}" not found`;
          } else if (result.status === 409) {
            targetPath += '-copy';
            continue;
          }

          done = true;
        }
      }
    },
    getFileUrl(path) {
      return `${origin}/api/v1/${api}/files/${path}?access_token=${accessToken}`;
    }
  };
}

export default {
  createDirectoryModel
};