import { Injectable } from '@nestjs/common'

import { HttpService } from '../services/http'

import { BaseRepository } from './base.repository'

const GET = `
  query config($key: String!) {
    config(where: {key: {_eq: $key}}) {
      value
    }
  }
`

const GET_BY_PREFIX = `
  query config($prefix: String!) {
    config(where: {key: {_like: $prefix}}) {
      key
      value
    }
  }
`

const SET = `
  mutation setConfig($key: String!, $value: String!) {
    insert_config_one(object: {key: $key, value: $value}, on_conflict: {constraint: config_pkey, update_columns: value}) {
      value
    }
  }
`

@Injectable()
export class ConfigRepository extends BaseRepository {
  constructor(protected readonly httpService: HttpService) {
    super(httpService, 'config')
  }

  async get(key: string): Promise<string> {
    const { data } = await this.fetchGraphQL({
      body: { query: GET, variables: { key } },
    })

    return data?.config?.[0]?.value || null
  }

  async getByPrefix(prefix: string): Promise<{ key: string; value: string }[]> {
    const { data } = await this.fetchGraphQL({
      body: { query: GET_BY_PREFIX, variables: { prefix: `${prefix}_%` } },
    })

    return data?.config || null
  }

  async set(key: string, value: string): Promise<void> {
    await this.fetchGraphQL({
      body: { query: SET, variables: { key, value } },
    })
  }
}