import { Observable } from 'rxjs'
import { catchError, map } from 'rxjs/operators'
import { HttpClient, HttpParams } from '@angular/common/http'
import { Injectable } from '@angular/core'
import { UserCreate, UserUpdateMe, UserVideoQuota } from '../../../../../shared'
import { environment } from '../../../environments/environment'
import { RestExtractor } from '../rest'
import { Avatar } from '../../../../../shared/models/avatars/avatar.model'

@Injectable()
export class UserService {
  static BASE_USERS_URL = environment.apiUrl + '/api/v1/users/'

  constructor (
    private authHttp: HttpClient,
    private restExtractor: RestExtractor
  ) {
  }

  changePassword (newPassword: string) {
    const url = UserService.BASE_USERS_URL + 'me'
    const body: UserUpdateMe = {
      password: newPassword
    }

    return this.authHttp.put(url, body)
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(err => this.restExtractor.handleError(err))
               )
  }

  updateMyProfile (profile: UserUpdateMe) {
    const url = UserService.BASE_USERS_URL + 'me'

    return this.authHttp.put(url, profile)
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(err => this.restExtractor.handleError(err))
               )
  }

  deleteMe () {
    const url = UserService.BASE_USERS_URL + 'me'

    return this.authHttp.delete(url)
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(err => this.restExtractor.handleError(err))
               )
  }

  changeAvatar (avatarForm: FormData) {
    const url = UserService.BASE_USERS_URL + 'me/avatar/pick'

    return this.authHttp.post<{ avatar: Avatar }>(url, avatarForm)
               .pipe(catchError(err => this.restExtractor.handleError(err)))
  }

  signup (userCreate: UserCreate) {
    return this.authHttp.post(UserService.BASE_USERS_URL + 'register', userCreate)
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(err => this.restExtractor.handleError(err))
               )
  }

  getMyVideoQuotaUsed () {
    const url = UserService.BASE_USERS_URL + '/me/video-quota-used'

    return this.authHttp.get<UserVideoQuota>(url)
               .pipe(catchError(err => this.restExtractor.handleError(err)))
  }

  askResetPassword (email: string) {
    const url = UserService.BASE_USERS_URL + '/ask-reset-password'

    return this.authHttp.post(url, { email })
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(err => this.restExtractor.handleError(err))
               )
  }

  resetPassword (userId: number, verificationString: string, password: string) {
    const url = `${UserService.BASE_USERS_URL}/${userId}/reset-password`
    const body = {
      verificationString,
      password
    }

    return this.authHttp.post(url, body)
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(res => this.restExtractor.handleError(res))
               )
  }

  verifyEmail (userId: number, verificationString: string) {
    const url = `${UserService.BASE_USERS_URL}/${userId}/verify-email`
    const body = {
      verificationString
    }

    return this.authHttp.post(url, body)
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(res => this.restExtractor.handleError(res))
               )
  }

  askSendVerifyEmail (email: string) {
    const url = UserService.BASE_USERS_URL + '/ask-send-verify-email'

    return this.authHttp.post(url, { email })
               .pipe(
                 map(this.restExtractor.extractDataBool),
                 catchError(err => this.restExtractor.handleError(err))
               )
  }

  autocomplete (search: string): Observable<string[]> {
    const url = UserService.BASE_USERS_URL + 'autocomplete'
    const params = new HttpParams().append('search', search)

    return this.authHttp
      .get<string[]>(url, { params })
      .pipe(catchError(res => this.restExtractor.handleError(res)))
  }
}