import CryptoJS from 'crypto-js';
import { customAlphabet } from 'nanoid';

import { NcConfig } from '../../../interface/config';
import { Knex, XKnex } from '../../dataMapper';
import Noco from '../Noco';
import XcMigrationSource from '../common/XcMigrationSource';

import NcMetaIO, { META_TABLES } from './NcMetaIO';
import NcConnectionMgr from '../common/NcConnectionMgr';

const nanoid = customAlphabet('1234567890abcdefghijklmnopqrstuvwxyz_', 4);

export default class NcMetaIOImpl extends NcMetaIO {
  public async metaPaginatedList(
    projectId: string,
    dbAlias: string,
    target: string,
    args?: {
      condition?: { [key: string]: any };
      limit?: number;
      offset?: number;
      xcCondition?;
      fields?: string[];
      sort?: { field: string; desc?: boolean };
    }
  ): Promise<{ list: any[]; count: number }> {
    const query = this.knexConnection(target);
    const countQuery = this.knexConnection(target);
    if (projectId !== null && projectId !== undefined) {
      query.where('project_id', projectId);
      countQuery.where('project_id', projectId);
    }
    if (dbAlias !== null && dbAlias !== undefined) {
      query.where('db_alias', dbAlias);
      countQuery.where('db_alias', dbAlias);
    }

    if (args?.condition) {
      query.where(args.condition);
      countQuery.where(args.condition);
    }
    if (args?.limit) {
      query.limit(args.limit);
    }
    if (args?.sort) {
      query.orderBy(args.sort.field, args.sort.desc ? 'desc' : 'asc');
    }
    if (args?.offset) {
      query.offset(args.offset);
    }
    if (args?.xcCondition) {
      (query as any)
        .condition(args.xcCondition)(countQuery as any)
        .condition(args.xcCondition);
    }

    if (args?.fields?.length) {
      query.select(...args.fields);
    }

    return {
      list: await query,
      count: Object.values(await countQuery.count().first())?.[0] as any
    };
  }

  private connection: XKnex;
  // todo: need to fix
  private trx: Knex.Transaction;

  constructor(app: Noco, config: NcConfig) {
    super(app, config);

    if (this.config?.meta?.db?.client === 'sqlite3') {
      this.config.meta.db.useNullAsDefault = true;
    }

    if (this.config?.meta?.db) {
      this.connection = XKnex(this.config?.meta?.db);
    } else {
      let dbIndex = this.config.envs?.[this.config.workingEnv]?.db.findIndex(
        c => c.meta.dbAlias === this.config?.auth?.jwt?.dbAlias
      );
      dbIndex = dbIndex === -1 ? 0 : dbIndex;
      this.connection = XKnex(
        this.config.envs?.[this.config.workingEnv]?.db[dbIndex] as any
      );
    }
    NcConnectionMgr.setXcMeta(this);
  }

  public get knexConnection(): XKnex {
    return (this.trx || this.connection) as any;
  }

  public updateKnex(connectionConfig): void {
    this.connection = XKnex(connectionConfig);
  }

  public async metaInit(): Promise<boolean> {
    await this.connection.migrate.latest({
      migrationSource: new XcMigrationSource(),
      tableName: 'xc_knex_migrations'
    });
    return true;
  }

  public async metaDelete(
    project_id: string,
    dbAlias: string,
    target: string,
    idOrCondition: string | { [p: string]: any },
    xcCondition?
  ): Promise<void> {
    const query = this.knexConnection(target);

    if (project_id !== null && project_id !== undefined) {
      query.where('project_id', project_id);
    }
    if (dbAlias !== null && dbAlias !== undefined) {
      query.where('db_alias', dbAlias);
    }

    if (typeof idOrCondition !== 'object') {
      query.where('id', idOrCondition);
    } else if (idOrCondition) {
      query.where(idOrCondition);
    }

    if (xcCondition) {
      query.condition(xcCondition, {});
    }

    return query.del();
  }

  public async metaGet(
    project_id: string,
    dbAlias: string,
    target: string,
    idOrCondition: string | { [p: string]: any },
    fields?: string[],
    xcCondition?
  ): Promise<any> {
    const query = this.knexConnection(target);

    if (xcCondition) {
      query.condition(xcCondition);
    }

    if (fields?.length) {
      query.select(...fields);
    }

    if (project_id !== null && project_id !== undefined) {
      query.where('project_id', project_id);
    }
    if (dbAlias !== null && dbAlias !== undefined) {
      query.where('db_alias', dbAlias);
    }

    if (!idOrCondition) {
      return query.first();
    }

    if (typeof idOrCondition !== 'object') {
      query.where('id', idOrCondition);
    } else {
      query.where(idOrCondition);
    }

    // console.log(query.toQuery())

    return query.first();
  }

  public async metaInsert(
    project_id: string,
    dbAlias: string,
    target: string,
    data: any
  ): Promise<any> {
    return this.knexConnection(target).insert({
      db_alias: dbAlias,
      project_id,
      created_at: this.knexConnection?.fn?.now(),
      updated_at: this.knexConnection?.fn?.now(),
      ...data
    });
  }

  public async metaList(
    project_id: string,
    dbAlias: string,
    target: string,
    args?: {
      condition?: { [p: string]: any };
      limit?: number;
      offset?: number;
      xcCondition?;
      fields?: string[];
      orderBy?: { [key: string]: 'asc' | 'desc' };
    }
  ): Promise<any[]> {
    const query = this.knexConnection(target);

    if (project_id !== null && project_id !== undefined) {
      query.where('project_id', project_id);
    }
    if (dbAlias !== null && dbAlias !== undefined) {
      query.where('db_alias', dbAlias);
    }

    if (args?.condition) {
      query.where(args.condition);
    }
    if (args?.limit) {
      query.limit(args.limit);
    }
    if (args?.offset) {
      query.offset(args.offset);
    }
    if (args?.xcCondition) {
      (query as any).condition(args.xcCondition);
    }

    if (args?.orderBy) {
      for (const [col, dir] of Object.entries(args.orderBy)) {
        query.orderBy(col, dir);
      }
    }
    if (args?.fields?.length) {
      query.select(...args.fields);
    }

    console.log(query.toQuery());

    return query;
  }

  public async metaUpdate(
    project_id: string,
    dbAlias: string,
    target: string,
    data: any,
    idOrCondition?: string | { [p: string]: any },
    xcCondition?
  ): Promise<any> {
    const query = this.knexConnection(target);
    if (project_id !== null && project_id !== undefined) {
      query.where('project_id', project_id);
    }
    if (dbAlias !== null && dbAlias !== undefined) {
      query.where('db_alias', dbAlias);
    }

    delete data.created_at;

    query.update({ ...data, updated_at: this.knexConnection?.fn?.now() });
    if (typeof idOrCondition !== 'object') {
      query.where('id', idOrCondition);
    } else if (idOrCondition) {
      query.where(idOrCondition);
    }
    if (xcCondition) {
      query.condition(xcCondition);
    }

    // console.log(query.toQuery())

    return query;
  }

  public async metaDeleteAll(
    _project_id: string,
    _dbAlias: string
  ): Promise<void> {
    // await this.knexConnection..dropTableIfExists('nc_roles').;
    // await this.knexConnection.schema.dropTableIfExists('nc_store').;
    // await this.knexConnection.schema.dropTableIfExists('nc_hooks').;
    // await this.knexConnection.schema.dropTableIfExists('nc_cron').;
    // await this.knexConnection.schema.dropTableIfExists('nc_acl').;
  }

  public async isMetaDataExists(
    project_id: string,
    dbAlias: string
  ): Promise<boolean> {
    const query = this.knexConnection('nc_models');
    if (project_id !== null && project_id !== undefined) {
      query.where('project_id', project_id);
    }
    if (dbAlias !== null && dbAlias !== undefined) {
      query.where('db_alias', dbAlias);
    }
    const data = await query.first();

    return !!data;
  }

  async commit() {
    if (this.trx) {
      await this.trx.commit();
    }
    this.trx = null;
  }

  async rollback(e?) {
    if (this.trx) {
      await this.trx.rollback(e);
    }
    this.trx = null;
  }

  async startTransaction() {
    if (!this.trx) {
      this.trx = await this.connection.transaction();
    }
  }

  async metaReset(
    project_id: string,
    dbAlias: string,
    apiType?: string
  ): Promise<void> {
    // const apiType: string = this.config?.envs?.[this.config.env || this.config.workingEnv]?.db.find(d => {
    //   return d.meta.dbAlias === dbAlias;
    // })?.meta?.api?.type;

    if (apiType) {
      await Promise.all(
        META_TABLES?.[apiType]?.map(table => {
          return (async () => {
            try {
              await this.knexConnection(table)
                .where({ db_alias: dbAlias, project_id })
                .del();
            } catch (e) {
              console.warn(`Error: ${table} reset failed`);
            }
          })();
        })
      );
    }
  }

  public async projectCreate(
    projectName: string,
    config: any,
    description?: string,
    meta?: boolean
  ): Promise<any> {
    try {
      const ranId = this.getNanoId();
      const id = `${projectName.toLowerCase().replace(/\W+/g, '_')}_${ranId}`;
      if (meta) {
        config.prefix = `nc_${ranId}__`;
        // if(config.envs._noco?.db?.[0]?.meta?.tn){
        //   config.envs._noco.db[0].meta.tn += `_${prefix}`
        // }
      }
      config.id = id;
      const project: any = {
        id,
        title: projectName,
        description,
        config: CryptoJS.AES.encrypt(
          JSON.stringify(config),
          this.config?.auth?.jwt?.secret
        ).toString()
      };
      // todo: check project name used or not
      await this.knexConnection('nc_projects').insert({
        ...project,
        created_at: this.knexConnection?.fn?.now(),
        updated_at: this.knexConnection?.fn?.now()
      });

      project.prefix = config.prefix;
      return project;
    } catch (e) {
      console.log(e);
    }
  }

  public async projectUpdate(projectId: string, config: any): Promise<any> {
    try {
      const project = {
        config: CryptoJS.AES.encrypt(
          JSON.stringify(config, null, 2),
          this.config?.auth?.jwt?.secret
        ).toString()
      };
      // todo: check project name used or not
      await this.knexConnection('nc_projects')
        .update(project)
        .where({
          id: projectId
        });
    } catch (e) {
      console.log(e);
    }
  }

  public async projectList(): Promise<any[]> {
    return (await this.knexConnection('nc_projects').select()).map(p => {
      p.config = CryptoJS.AES.decrypt(
        p.config,
        this.config?.auth?.jwt?.secret
      ).toString(CryptoJS.enc.Utf8);
      return p;
    });
  }

  public async userProjectList(userId: any): Promise<any[]> {
    return (
      await this.knexConnection('nc_projects')
        .leftJoin(
          this.knexConnection('nc_projects_users')
            .where(`nc_projects_users.user_id`, userId)
            .as('user'),
          'user.project_id',
          'nc_projects.id'
        )
        .select('nc_projects.*')
        .select('user.user_id')
        .select(
          this.knexConnection('xc_users')
            .select('xc_users.email')
            .innerJoin(
              'nc_projects_users',
              'nc_projects_users.user_id',
              '=',
              'xc_users.id'
            )
            .whereRaw('nc_projects.id = nc_projects_users.project_id')
            .where('nc_projects_users.roles', 'like', '%owner%')
            .first()
            .as('owner')
        )
        .select(
          this.knexConnection('xc_users')
            .count('xc_users.id')
            .innerJoin(
              'nc_projects_users',
              'nc_projects_users.user_id',
              '=',
              'xc_users.id'
            )
            .where(qb => {
              qb.where('nc_projects_users.roles', 'like', '%creator%').orWhere(
                'nc_projects_users.roles',
                'like',
                '%owner%'
              );
            })
            .whereRaw('nc_projects.id = nc_projects_users.project_id')
            .andWhere('xc_users.id', userId)
            .first()
            .as('is_creator')
        )
    ).map(p => {
      p.allowed = p.user_id === userId;
      p.config = CryptoJS.AES.decrypt(
        p.config,
        this.config?.auth?.jwt?.secret
      ).toString(CryptoJS.enc.Utf8);
      return p;
    });
  }

  public async isUserHaveAccessToProject(
    projectId: string,
    userId: any
  ): Promise<boolean> {
    return !!(await this.knexConnection('nc_projects_users')
      .where({
        project_id: projectId,
        user_id: userId
      })
      .first());
  }

  public async projectGet(projectName: string, encrypt?): Promise<any> {
    const project = await this.knexConnection('nc_projects')
      .where({
        title: projectName
      })
      .first();

    if (project && !encrypt) {
      project.config = CryptoJS.AES.decrypt(
        project.config,
        this.config?.auth?.jwt?.secret
      ).toString(CryptoJS.enc.Utf8);
    }
    return project;
  }

  public async projectGetById(projectId: string, encrypt?): Promise<any> {
    const project = await this.knexConnection('nc_projects')
      .where({
        id: projectId
      })
      .first();
    if (project && !encrypt) {
      project.config = CryptoJS.AES.decrypt(
        project.config,
        this.config?.auth?.jwt?.secret
      ).toString(CryptoJS.enc.Utf8);
    }
    return project;
  }

  public projectDelete(title: string): Promise<any> {
    return this.knexConnection('nc_projects')
      .where({
        title
      })
      .delete();
  }

  public projectDeleteById(id: string): Promise<any> {
    return this.knexConnection('nc_projects')
      .where({
        id
      })
      .delete();
  }

  public async projectStatusUpdate(
    projectId: string,
    status: string
  ): Promise<any> {
    return this.knexConnection('nc_projects')
      .update({
        status
      })
      .where({
        id: projectId
      });
  }

  public async projectAddUser(
    projectId: string,
    userId: any,
    roles: string
  ): Promise<any> {
    if (
      await this.knexConnection('nc_projects_users')
        .where({
          user_id: userId,
          project_id: projectId
        })
        .first()
    ) {
      return {};
    }
    return this.knexConnection('nc_projects_users').insert({
      user_id: userId,
      project_id: projectId,
      roles
    });
  }

  public projectRemoveUser(projectId: string, userId: any): Promise<any> {
    return this.knexConnection('nc_projects_users')
      .where({
        user_id: userId,
        project_id: projectId
      })
      .delete();
  }

  get isRest(): boolean {
    return this.config?.envs?.[this.config.workingEnv]?.db?.some(
      db => db?.meta?.api?.type === 'rest'
    );
  }

  get isGql(): boolean {
    return this.config?.envs?.[this.config.workingEnv]?.db?.some(
      db => db?.meta?.api?.type === 'graphql'
    );
  }

  get isGrpc(): boolean {
    return this.config?.envs?.[this.config.workingEnv]?.db?.some(
      db => db?.meta?.api?.type === 'grpc'
    );
  }

  public get knex(): any {
    return this.knexConnection;
  }

  private getNanoId() {
    return nanoid();
  }

  public async audit(
    project_id: string,
    dbAlias: string,
    target: string,
    data: any
  ): Promise<any> {
    if (['DATA', 'COMMENT'].includes(data?.op_type)) {
      return Promise.resolve(undefined);
    }
    return this.metaInsert(project_id, dbAlias, target, data);
  }
}
/**
 * @copyright Copyright (c) 2021, Xgene Cloud Ltd
 *
 * @author Naveen MR <oof1lab@gmail.com>
 * @author Pranav C Balan <pranavxc@gmail.com>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
