// Licensed to Cloudera, Inc. under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  Cloudera, Inc. licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import { Tags } from './GeneralDataCatalog';
import { Cancellable, CancellablePromise } from '../api/cancellablePromise';
import {
  DefaultApiResponse,
  extractErrorMessage,
  get,
  post,
  successResponseIsError
} from '../api/utils';
import { closeSession, ExecutionHandle } from '../apps/editor/execution/api';
import DataCatalogEntry, {
  Analysis,
  FieldSample,
  NavigatorMeta,
  Partitions,
  Sample,
  SampleMeta,
  SourceMeta
} from '../catalog/DataCatalogEntry';
import { Cluster, Compute, Connector, Namespace } from '../config/types';
import { findEditorConnector } from '../config/hueConfig';
import { hueWindow } from '../types/types';
import '../utils/json.bigDataParse';
import sleep from '../utils/timing/sleep';
import UUID from '../utils/string/UUID';

interface AnalyzeResponse {
  status: number;
  isSuccess: boolean;
  isFailure: boolean;
}

interface SharedFetchOptions {
  entry: DataCatalogEntry;
  silenceErrors?: boolean;
}

interface DescribeFetchOptions extends SharedFetchOptions {
  refreshAnalysis?: boolean;
}

interface SampleFetchOptions extends SharedFetchOptions {
  operation?: string;
  sampleCount?: number;
}

const ADD_TAGS_URL = '/metadata/api/catalog/add_tags';
const AUTOCOMPLETE_URL_PREFIX = '/api/v1/editor/autocomplete/';
const CANCEL_STATEMENT_URL = '/api/v1/editor/cancel_statement';
const CHECK_STATUS_URL = '/api/v1/editor/check_status';
const CLOSE_STATEMENT_URL = '/api/v1/editor/close_statement';
const DELETE_TAGS_URL = '/metadata/api/catalog/delete_tags';
const DESCRIBE_URL = '/api/v1/editor/describe/';
const FETCH_RESULT_DATA_URL = '/api/v1/editor/fetch_result_data';
const FIND_ENTITY_URL = '/metadata/api/catalog/find_entity';
const LIST_TAGS_URL = '/metadata/api/catalog/list_tags';
const METASTORE_TABLE_URL_PREFIX = '/metastore/table/';
const SAMPLE_URL_PREFIX = '/api/v1/editor/sample/';
const SEARCH_URL = '/desktop/api/search/entities';
const UPDATE_PROPERTIES_URL = '/metadata/api/catalog/update_properties';

const getEntryUrlPath = (entry: DataCatalogEntry) =>
  entry.path.join('/') + (entry.path.length ? '/' : '');

const performAnalyze = ({
  entry,
  silenceErrors
}: SharedFetchOptions): CancellablePromise<AnalyzeResponse> => {
  if (entry.isDatabase()) {
    return CancellablePromise.resolve();
  }
  let cancelled = false;

  const pollForAnalysis = async (url: string, delay: number): Promise<AnalyzeResponse> => {
    const analyzeResponse = await post<AnalyzeResponse>(url, undefined, { silenceErrors });
    if (cancelled) {
      throw new Error('Cancelled');
    }
    if (!analyzeResponse.isFailure && !analyzeResponse.isSuccess) {
      await sleep(delay);
      return pollForAnalysis(url, 1000);
    } else {
      return analyzeResponse;
    }
  };

  return new CancellablePromise<AnalyzeResponse>(async (resolve, reject, onCancel) => {
    onCancel(() => {
      cancelled = true;
    });
    try {
      const analyzeResponse = await post<DefaultApiResponse & { watch_url?: string }>(
        `/api/v1/${
          entry.getConnector().id === 'hive' ? 'beeswax' : entry.getConnector().id
        }/analyze/${getEntryUrlPath(entry)}`,
        undefined,
        { silenceErrors }
      );
      if (
        !cancelled &&
        analyzeResponse &&
        analyzeResponse.status === 0 &&
        analyzeResponse.watch_url
      ) {
        resolve(await pollForAnalysis(analyzeResponse.watch_url, 500));
      } else {
        reject('Analyze failed');
      }
    } catch (err) {
      reject(err || 'Analyze failed');
    }
  });
};

export const fetchDescribe = ({
  entry,
  silenceErrors,
  refreshAnalysis
}: DescribeFetchOptions): CancellablePromise<Analysis> =>
  new CancellablePromise<Analysis>(async (resolve, reject, onCancel) => {
    if (entry.isSource()) {
      reject('Describe is not possible on the source');
      return;
    }

    if (refreshAnalysis) {
      const analyzePromise = performAnalyze({ entry, silenceErrors });
      onCancel(analyzePromise.cancel.bind(analyzePromise));
      try {
        await analyzePromise;
      } catch (err) {}
    }

    const [database, table, ...fields] = entry.path;
    let url = `${DESCRIBE_URL}${database}`;
    if (table && fields.length) {
      url += `/${table}/stats/${fields.join('/')}`;
    } else if (table) {
      url += `/${table}/`;
    }

    const describePromise = post<Analysis>(
      url,
      {
        format: 'json',
        cluster: JSON.stringify(entry.compute),
        source_type: getAssistConnectorId(entry),
        connector: JSON.stringify(entry.getConnector())
      },
      {
        silenceErrors,
        handleSuccess: (response: Analysis & DefaultApiResponse, postResolve, postReject) => {
          if (successResponseIsError(response)) {
            postReject(extractErrorMessage(response));
          } else {
            const adjustedResponse = response;
            adjustedResponse.hueTimestamp = Date.now();
            postResolve(adjustedResponse);
          }
        }
      }
    );

    try {
      resolve(await describePromise);
    } catch (err) {
      reject(err || 'Describe failed');
    }
  });

export const fetchClusters = (
  connector: Connector,
  silenceErrors?: boolean
): CancellablePromise<Record<string, Cluster[]>> =>
  get(`/desktop/api2/context/clusters/${connector.id}`, undefined, {
    silenceErrors
  });

export const fetchComputes = (
  connector: Connector,
  silenceErrors?: boolean
): CancellablePromise<Record<string, Compute[]>> =>
  get(`/desktop/api2/context/computes/${connector.id}`, undefined, {
    silenceErrors
  });

export const fetchNamespaces = (
  connector: Connector,
  silenceErrors?: boolean
): CancellablePromise<Record<string, Namespace[]> & { dynamicClusters?: boolean }> =>
  get(`/api/v1/get_namespaces/${connector.id}`, undefined, { silenceErrors });

export const fetchNavigatorMetadata = ({
  entry,
  silenceErrors
}: SharedFetchOptions): CancellablePromise<NavigatorMeta> => {
  const params = new URLSearchParams();

  const [database, tableOrView, field] = entry.path;
  if (database && tableOrView && field) {
    params.append('type', 'field');
    params.append('database', database);
    params.append('table', tableOrView);
  } else if (database && tableOrView) {
    params.append('type', entry.isView() ? 'view' : 'table');
    params.append('database', database);
  } else if (database) {
    params.append('type', 'database');
  } else {
    return CancellablePromise.reject('Navigator metadata is not possible on the source');
  }
  params.append('name', entry.name);

  return post<NavigatorMeta>(
    `${FIND_ENTITY_URL}?${params}`,
    {
      notebook: {},
      snippet: JSON.stringify({
        type: entry.getConnector().id,
        source: 'data'
      }),
      cluster: (entry.compute && JSON.stringify(entry.compute)) || '""'
    },
    {
      silenceErrors,
      handleSuccess: (
        response: (NavigatorMeta | { entity: NavigatorMeta }) & DefaultApiResponse,
        resolve,
        reject
      ) => {
        if (successResponseIsError(response)) {
          reject(extractErrorMessage(response));
        } else {
          const adjustedResponse = (<{ entity: NavigatorMeta }>response).entity || response;
          adjustedResponse.hueTimestamp = Date.now();
          resolve(adjustedResponse);
        }
      }
    }
  );
};

export const fetchAllNavigatorTags = ({
  silenceErrors
}: Pick<SharedFetchOptions, 'silenceErrors'>): CancellablePromise<Tags> =>
  post<Tags>(LIST_TAGS_URL, undefined, {
    silenceErrors,
    handleSuccess: (response: { tags?: Tags } & DefaultApiResponse, resolve, reject) => {
      if (successResponseIsError(response)) {
        reject(extractErrorMessage(response));
      } else {
        resolve(response.tags || {});
      }
    }
  });

export const fetchPartitions = ({
  entry,
  silenceErrors
}: SharedFetchOptions): CancellablePromise<Partitions> =>
  post<Partitions>(
    `${METASTORE_TABLE_URL_PREFIX}${getEntryUrlPath(entry)}partitions`,
    {
      format: 'json',
      cluster: (entry.compute && JSON.stringify(entry.compute)) || '""'
    },
    {
      silenceErrors,
      handleSuccess: (response, resolve, reject) => {
        const adjustedResponse = response || {};
        adjustedResponse.hueTimestamp = Date.now();
        if (successResponseIsError(response)) {
          reject(`Partitions failed: ${extractErrorMessage(response)}`);
        } else {
          resolve(adjustedResponse);
        }
      },
      handleError: (errorResponse, resolve, reject) => {
        if (
          errorResponse.response &&
          errorResponse.response.data &&
          errorResponse.response.data.indexOf('is not partitioned') !== -1
        ) {
          resolve({
            hueTimestamp: Date.now(),
            partition_keys_json: [],
            partition_values_json: []
          });
        } else {
          reject(errorResponse);
        }
      }
    }
  );

interface SampleResult {
  type?: string;
  handle?: ExecutionHandle;
  data?: FieldSample[][];
  meta?: SampleMeta[];
}

interface SampleResponse {
  status?: string;
  result?: SampleResult;
  rows?: FieldSample[][];
  full_headers?: SampleMeta[];
}

/**
 * Checks the status for the given snippet ID
 * Note: similar to notebook and search check_status.
 *
 * @param {Object} options
 * @param {Object} options.notebookJson
 * @param {Object} options.snippetJson
 * @param {boolean} [options.silenceErrors]
 *
 * @return {CancellableJqPromise}
 */
const whenAvailable = (options: {
  entry: DataCatalogEntry;
  notebookJson: string;
  snippetJson: string;
  silenceErrors?: boolean;
}) =>
  new CancellablePromise<{ status?: string; has_result_set?: boolean }>(
    async (resolve, reject, onCancel) => {
      let promiseToCancel: Cancellable | undefined;
      let cancelled = false;
      onCancel(() => {
        cancelled = true;
        if (promiseToCancel) {
          promiseToCancel.cancel();
        }
      });

      const checkStatusPromise = post<{ query_status?: { status?: string } }>(
        CHECK_STATUS_URL,
        {
          notebook: options.notebookJson,
          snippet: options.snippetJson,
          cluster: (options.entry.compute && JSON.stringify(options.entry.compute)) || '""'
        },
        { silenceErrors: options.silenceErrors }
      );
      try {
        promiseToCancel = checkStatusPromise;
        const response = await checkStatusPromise;

        if (response && response.query_status && response.query_status.status) {
          const status = response.query_status.status;
          if (status === 'available') {
            resolve(response.query_status);
          } else if (status === 'running' || status === 'starting' || status === 'waiting') {
            await sleep(500);
            try {
              if (!cancelled) {
                const whenPromise = whenAvailable(options);
                promiseToCancel = whenPromise;
                resolve(await whenPromise);
                return;
              }
            } catch (err) {}
          }
          reject(response.query_status);
        } else {
          reject('Cancelled');
        }
      } catch (err) {
        reject(err);
      }
    }
  );

export const fetchSample = ({
  entry,
  silenceErrors,
  operation,
  sampleCount
}: SampleFetchOptions): CancellablePromise<Sample> =>
  new CancellablePromise<Sample>(async (resolve, reject, onCancel) => {
    const cancellablePromises: Cancellable[] = [];

    let notebookJson: string | undefined = undefined;
    let snippetJson: string | undefined = undefined;

    const closeQuery = async () => {
      if (notebookJson) {
        try {
          await post(
            CLOSE_STATEMENT_URL,
            {
              notebook: notebookJson,
              snippet: snippetJson
            },
            { silenceErrors: true }
          );
        } catch (err) {}
      }
    };

    const cancelQuery = async () => {
      if (notebookJson) {
        try {
          await post(
            CANCEL_STATEMENT_URL,
            {
              notebook: notebookJson,
              snippet: snippetJson,
              cluster: (entry.compute && JSON.stringify(entry.compute)) || '""'
            },
            { silenceErrors: true }
          );
        } catch (err) {}
      }
    };

    onCancel(() => {
      cancellablePromises.forEach(cancellable => cancellable.cancel());
    });

    cancellablePromises.push({
      cancel: async () => {
        try {
          await cancelQuery();
        } catch (err) {}
      }
    });

    const samplePromise = post<SampleResponse>(
      `${SAMPLE_URL_PREFIX}${getEntryUrlPath(entry)}`,
      {
        notebook: {},
        snippet: JSON.stringify({
          type: getAssistConnectorId(entry),
          compute: entry.compute
        }),
        async: true,
        operation: `"${operation || 'default'}"`,
        cluster: (entry.compute && JSON.stringify(entry.compute)) || '""'
      },
      { silenceErrors }
    );

    try {
      cancellablePromises.push(samplePromise);
      const sampleResponse = await samplePromise;
      cancellablePromises.pop();

      const queryResult = {
        id: UUID(),
        type: (sampleResponse.result && sampleResponse.result.type) || entry.getConnector().id,
        compute: entry.compute,
        status: 'running',
        result: sampleResponse.result || {}
      };
      queryResult.result.type = 'table';

      notebookJson = JSON.stringify({ type: entry.getConnector().id });
      snippetJson = JSON.stringify(queryResult);

      if (sampleResponse && sampleResponse.rows) {
        // Sync results
        resolve({
          type: 'table',
          hueTimestamp: Date.now(),
          data: sampleResponse.rows,
          meta: sampleResponse.full_headers || []
        });
        closeQuery();
      } else {
        const statusPromise = whenAvailable({
          notebookJson: notebookJson,
          snippetJson: snippetJson,
          entry,
          silenceErrors
        });

        cancellablePromises.push(statusPromise);
        const resultStatus = await statusPromise;
        cancellablePromises.pop();

        if (resultStatus.status !== 'available') {
          reject();
          closeQuery();
          return;
        }
        if (queryResult.result?.handle && typeof resultStatus.has_result_set !== 'undefined') {
          queryResult.result.handle.has_result_set = resultStatus.has_result_set;
        }
        snippetJson = JSON.stringify(queryResult);
        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        // @ts-ignore
        const transformResponse = (response: unknown) => {
          // eslint-disable-next-line @typescript-eslint/ban-ts-comment
          // @ts-ignore
          return JSON.bigdataParse(response);
        };
        const resultPromise = post<SampleResponse>(
          FETCH_RESULT_DATA_URL,
          {
            notebook: notebookJson,
            snippet: snippetJson,
            rows: sampleCount || 100,
            startOver: 'false'
          },
          { silenceErrors, transformResponse }
        );

        const sampleResponse = await resultPromise;

        const sample: Sample = {
          hueTimestamp: Date.now(),
          type: 'table',
          data: (sampleResponse.result && sampleResponse.result.data) || [],
          meta: (sampleResponse.result && sampleResponse.result.meta) || []
        };

        resolve(sample);
        closeQuery();
        cancellablePromises.pop();

        const closeSessions = (<hueWindow>window).CLOSE_SESSIONS;
        if (
          closeSessions &&
          closeSessions[entry.getConnector().dialect || ''] &&
          queryResult.result.handle &&
          queryResult.result.handle.session_id
        ) {
          try {
            await closeSession({
              session: {
                id: queryResult.result.handle.session_id,
                session_id: queryResult.result.handle.session_guid || '',
                type: entry.getConnector().id,
                properties: []
              },
              silenceErrors
            });
          } catch (err) {}
        }
      }
    } catch (err) {
      reject();
      closeQuery();
    }
  });

export const fetchSourceMetadata = ({
  entry,
  silenceErrors
}: SharedFetchOptions): CancellablePromise<SourceMeta> =>
  post<SourceMeta>(
    `${AUTOCOMPLETE_URL_PREFIX}${getEntryUrlPath(entry)}`,
    {
      notebook: {},
      snippet: JSON.stringify({
        type: getAssistConnectorId(entry),
        source: 'data'
      }),
      operation: entry.isModel() ? 'model' : 'default',
      cluster: (entry.compute && JSON.stringify(entry.compute)) || '""'
    },
    {
      silenceErrors,
      handleSuccess: (response, resolve, reject) => {
        const message = <string>response.error || response.message || '';
        const adjustedResponse = response || {};
        adjustedResponse.notFound =
          !!response &&
          response.status === 0 &&
          response.code === 500 &&
          (message.indexOf('Error 10001') !== -1 || message.indexOf('AnalysisException') !== -1);

        adjustedResponse.hueTimestamp = Date.now();

        if (!adjustedResponse.notFound && successResponseIsError(response)) {
          reject(extractErrorMessage(response));
        } else {
          resolve(adjustedResponse);
        }
      }
    }
  );

interface SearchOptions {
  limit?: number;
  query: string;
  rawQuery?: boolean;
  silenceErrors?: boolean;
  sources?: string[];
}

type SearchResponse = { entities?: NavigatorMeta[] } | undefined;

// this is a workaround for hplsql describe not working
const getAssistConnectorId = (entry: DataCatalogEntry): string | number => {
  const connector = entry.getConnector();
  if (connector.dialect === 'hplsql') {
    const hiveConnector = findEditorConnector(connector => connector.dialect === 'hive');
    if (hiveConnector) {
      return hiveConnector.id;
    }
  }
  return connector.id;
};

export const searchEntities = ({
  limit,
  query,
  rawQuery,
  silenceErrors,
  sources
}: SearchOptions): CancellablePromise<SearchResponse> =>
  post<SearchResponse>(
    SEARCH_URL,
    {
      query_s: JSON.stringify(query),
      limit: limit || 100,
      raw_query: !!rawQuery,
      sources: (sources && JSON.stringify(sources)) || '["sql"]'
    },
    { silenceErrors }
  );

interface UpdateNavigatorPropertiesOptions {
  deletedCustomMetadataKeys?: string[];
  identity: string;
  modifiedCustomMetadata?: Record<string, string>;
  properties?: unknown;
  silenceErrors?: boolean;
}

export const updateNavigatorProperties = ({
  deletedCustomMetadataKeys,
  identity,
  modifiedCustomMetadata,
  properties,
  silenceErrors
}: UpdateNavigatorPropertiesOptions): CancellablePromise<NavigatorMeta> => {
  const data: Record<string, string> = { id: JSON.stringify(identity) };

  if (properties) {
    data.properties = JSON.stringify(properties);
  }
  if (modifiedCustomMetadata) {
    data.modifiedCustomMetadata = JSON.stringify(modifiedCustomMetadata);
  }
  if (deletedCustomMetadataKeys) {
    data.deletedCustomMetadataKeys = JSON.stringify(deletedCustomMetadataKeys);
  }
  return post<NavigatorMeta>(UPDATE_PROPERTIES_URL, data, { silenceErrors });
};

interface UpdateSourceMetadataOptions extends SharedFetchOptions {
  properties: Record<string, string>;
}

export const updateSourceMetadata = ({
  entry,
  properties,
  silenceErrors
}: UpdateSourceMetadataOptions): CancellablePromise<void> => {
  let url;
  const data: Record<string, string> = {
    source_type: entry.getConnector().id
  };
  if (entry.path.length === 1) {
    url = `/metastore/databases/${entry.path[0]}/alter`;
    data.properties = JSON.stringify(properties);
  } else if (entry.path.length === 2) {
    url = `/metastore/table/${entry.path[0]}/${entry.path[1]}/alter`;
    if (properties?.name) {
      data.new_table_name = properties.name;
    }
  } else if (entry.path.length > 2) {
    url = `/metastore/table/${entry.path[0]}/${entry.path[1]}/alter_column`;
    data.column = entry.path.slice(2).join('.');
    if (properties?.name) {
      data.new_column_name = properties.name;
    }
    if (properties?.type) {
      data.new_column_type = properties.type;
    }
    if (properties?.partitions) {
      data.partition_spec = JSON.stringify(properties.partitions);
    }
  }

  if (properties?.comment) {
    data.comment = properties.comment;
  }

  if (!url) {
    return CancellablePromise.reject();
  }

  return post<void>(url, data, { silenceErrors });
};

export const addNavTags = (entityId: string, tags: string[]): CancellablePromise<NavigatorMeta> =>
  post<NavigatorMeta>(ADD_TAGS_URL, {
    id: JSON.stringify(entityId),
    tags: JSON.stringify(tags)
  });

export const deleteNavTags = (
  entityId: string,
  tags: string[]
): CancellablePromise<NavigatorMeta> =>
  post<NavigatorMeta>(DELETE_TAGS_URL, {
    id: JSON.stringify(entityId),
    tags: JSON.stringify(tags)
  });