/*
Copyright (C) 2017  Cloudbase Solutions SRL
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/>.
*/

// @flow

import Api from '../utils/ApiCaller'
import { servicesUrl, providerTypes } from '../constants'
import { SchemaParser } from './Schemas'
import type { Field } from '../types/Field'
import type { Providers } from '../types/Providers'
import type { OptionValues } from '../types/Endpoint'

class ProviderSource {
  async getConnectionInfoSchema(providerName: string): Promise<Field[]> {
    let response = await Api.get(`${servicesUrl.coriolis}/${Api.projectId}/providers/${providerName}/schemas/${providerTypes.CONNECTION}`)
    let schema = response.data.schemas.connection_info_schema
    schema = SchemaParser.connectionSchemaToFields(providerName, schema)
    return schema
  }

  async loadProviders(): Promise<Providers> {
    let response = await Api.get(`${servicesUrl.coriolis}/${Api.projectId}/providers`)
    return response.data.providers
  }

  async loadOptionsSchema(providerName: string, schemaType: 'migration' | 'replica', optionsType: 'source' | 'destination'): Promise<Field[]> {
    let schemaTypeInt = schemaType === 'migration' ?
      optionsType === 'source' ? providerTypes.SOURCE_MIGRATION : providerTypes.TARGET_MIGRATION :
      optionsType === 'source' ? providerTypes.SOURCE_REPLICA : providerTypes.TARGET_REPLICA

    let response = await Api.get(`${servicesUrl.coriolis}/${Api.projectId}/providers/${providerName}/schemas/${schemaTypeInt}`)
    let schema = optionsType === 'source' ?
      { oneOf: [response.data.schemas.source_environment_schema] } : response.data.schemas.destination_environment_schema
    let fields = SchemaParser.optionsSchemaToFields(providerName, schema)
    return fields
  }

  async getOptionsValues(optionsType: 'source' | 'destination', endpointId: string, envData: ?{ [string]: mixed }): Promise<OptionValues[]> {
    let envString = ''
    if (envData) {
      envString = `?env=${btoa(JSON.stringify(envData))}`
    }
    let callName = optionsType === 'source' ? 'source-options' : 'destination-options'
    let fieldName = optionsType === 'source' ? 'source_options' : 'destination_options'

    let response = await Api.get(`${servicesUrl.coriolis}/${Api.projectId}/endpoints/${endpointId}/${callName}${envString}`)
    return response.data[fieldName]
  }
}

export default new ProviderSource()