import type { RegisterClientOptions } from '@peertube/peertube-types/client'
import { ChannelLiveChatInfos, ChannelConfiguration, ChannelConfigurationOptions } from 'shared/lib/types'
import { getBaseRoute } from "../../../utils/uri"


export class ChannelDetailsService {

  public _registerClientOptions: RegisterClientOptions

  private _headers : any = {}

  constructor(registerClientOptions: RegisterClientOptions) {
    this._registerClientOptions = registerClientOptions

    this._headers = this._registerClientOptions.peertubeHelpers.getAuthHeader() ?? {}
    this._headers['content-type'] = 'application/json;charset=UTF-8'
  }

  validateOptions = (channelConfigurationOptions: ChannelConfigurationOptions) => {
    return true
  }

  saveOptions = async (channelId: number, channelConfigurationOptions: ChannelConfigurationOptions) => {
    if (!await this.validateOptions(channelConfigurationOptions)) {
      throw new Error('Invalid form data')
    }


    const response = await fetch(
      getBaseRoute(this._registerClientOptions) + '/api/configuration/channel/' + encodeURIComponent(channelId),
      {
        method: 'POST',
        headers: this._headers,
        body: JSON.stringify(channelConfigurationOptions)
      }
    )

    if (!response.ok) {
      throw new Error('Failed to save configuration options.')
    }

    return await response.json()
  }

  fetchUserChannels = async (username: string): Promise<ChannelLiveChatInfos[]> => {
    // FIXME: if more than 100 channels, loop (or add a pagination)
    const channels = await (await fetch(
      '/api/v1/accounts/' + encodeURIComponent(username) + '/video-channels?start=0&count=100&sort=name',
      {
        method: 'GET',
        headers: this._headers
      }
    )).json()
    if (!channels || !('data' in channels) || !Array.isArray(channels.data)) {
      throw new Error('Can\'t get the channel list.')
    }

    for (const channel of channels.data) {
      channel.livechatConfigurationUri = '/p/livechat/configuration/channel?channelId=' + encodeURIComponent(channel.id)

      // Note: since Peertube v6.0.0, channel.avatar is dropped, and we have to use channel.avatars.
      // So, if !channel.avatar, we will search a suitable one in channel.avatars, and fill channel.avatar.
      if (!channel.avatar && channel.avatars && Array.isArray(channel.avatars)) {
        for (const avatar of channel.avatars) {
          if (avatar.width === 120) {
            channel.avatar = avatar
            break
          }
        }
      }
    }

    return channels.data
  }

  fetchConfiguration = async (channelId: number): Promise<ChannelConfiguration> => {
    const response = await fetch(
      getBaseRoute(this._registerClientOptions) + '/api/configuration/channel/' + encodeURIComponent(channelId),
      {
        method: 'GET',
        headers: this._headers
      }
    )

    if (!response.ok) {
      throw new Error('Can\'t get channel configuration options.')
    }

    return await response.json()
  }
}