import { GuildMember, User } from "discord.js";
import { UserDto } from "./model/userDto";
import { Config } from "../server/configuration";
import { UserApi } from "./api/userApi";
import { logger } from "../server/logger";
import { SystemApi } from "./api/systemApi";

export class JellyfinHandler {

  private userApi: UserApi
  private systemApi: SystemApi
  private token: string
  private authHeader: { headers: { 'X-MediaBrowser-Token': string } }
  private config: Config
  private serverName = "";

  public async ServerName(): Promise<string> {
    if (this.serverName === "") {
      const info = await this.systemApi.getSystemInfo(this.authHeader)
      this.serverName = info.body.serverName ?? this.config.bot.jellyfin_url
    }
    return this.serverName
  }
  constructor(_config: Config, _userApi?: UserApi, _systemApi?: SystemApi) {
    this.config = _config
    this.userApi = _userApi ?? new UserApi(this.config.bot.jellyfin_url)
    this.systemApi = _systemApi ?? new SystemApi(this.config.bot.jellyfin_url)
    this.token = this.config.bot.jellfin_token
    this.authHeader = {
      headers: {
        "X-MediaBrowser-Token": this.token
      }
    }
  }

  private generateJFUserName(discordUser: GuildMember): string {
    return discordUser.displayName
  }

  public async addPermissionsToUserAccount(jfUserAccount: UserDto, guildId: string, requestId: string): Promise<UserDto> {
    throw new Error("Method not implemented.");
  }
  public async createUserAccountForDiscordUser(discordUser: GuildMember, guildId: string, requestId: string): Promise<UserDto> {
    const newUserName = this.generateJFUserName(discordUser)
    logger.info(`New Username for ${discordUser.displayName}: ${newUserName}`, { guildId, requestId })
    throw new Error("Method not implemented.");
  }
  public async isUserAlreadyPresent(discordUser: GuildMember, guildId: string, requestId?: string): Promise<boolean> {
    const jfUsernameFromDiscordUsername = this.generateJFUserName(discordUser)
    const jfUsers = await this.getCurrentUsers(guildId, requestId)
    const currentJfUserNames = jfUsers.map(x => x.name)
    logger.debug(`Current JF Usernames: ${JSON.stringify(currentJfUserNames)}`)
    const presence = currentJfUserNames.find(x => x === jfUsernameFromDiscordUsername)
    logger.debug(`Presence for DiscordUser ${discordUser.id}:${presence}`)
    return presence !== undefined
  }
  public async getCurrentUsers(guildId: string, requestId?: string): Promise<UserDto[]> {
    try {
      const result = await this.userApi.getUsers(undefined, undefined, this.authHeader)
      return result.body
    } catch (error) {
      logger.error(`Could not fetch current users from jellyfin`, { guildId, requestId })
    }
    return []
  }

  public async removeUser(newMember: GuildMember) {
    logger.error(`Trying to remove user ${newMember.displayName}, but method is not implemented`)
  }
  public async upsertUser(newMember: GuildMember, level: string, requestId?: string) {
    logger.error(`Trying to upsert user ${newMember.displayName}, with permissionLevel ${level} but method is not implemented`)
    const presence = await this.isUserAlreadyPresent(newMember, newMember.guild.id, requestId)
    if (presence) {
      logger.info(`User with name ${newMember.displayName} is already present`)
    }

  }
}