| 1 | import type { AxiosError, AxiosInstance } from 'axios' |
| 2 | import type { TikTokPlatformResponseBody } from './tiktok.exception' |
| 3 | import type { |
| 4 | TikTokApiResponse, |
| 5 | TikTokContentRequestBody, |
| 6 | TikTokCreatorInfo, |
| 7 | TikTokOAuthResponse, |
| 8 | TikTokPhotoPostInfo, |
| 9 | TikTokPhotoSourceInfo, |
| 10 | TikTokPublishResponse, |
| 11 | TikTokPublishStatusResponse, |
| 12 | TikTokRequestOptions, |
| 13 | TikTokUploadPlan, |
| 14 | TikTokUserInfo, |
| 15 | TikTokVideoPostInfo, |
| 16 | TikTokVideoQueryResponse, |
| 17 | TikTokVideoSourceInfo, |
| 18 | } from './tiktok.interface' |
| 19 | import { Injectable } from '@nestjs/common' |
| 20 | import { AccountType, ResponseCode } from '@yikart/common' |
| 21 | import axios from 'axios' |
| 22 | import { isSafeNumber, parse } from 'lossless-json' |
| 23 | import { MediaService } from '../../media/media.service' |
| 24 | import { PlatformErrorCategory } from '../platforms.exception' |
| 25 | import { TiktokConfig } from './tiktok.config' |
| 26 | import { TikTokPlatformException } from './tiktok.exception' |
| 27 | import { TikTokOAuthGrantType } from './tiktok.interface' |
| 28 | |
| 29 | const MIN_CHUNK_SIZE = 5 * 1024 * 1024 |
| 30 | const MAX_SINGLE_CHUNK_SIZE = 64 * 1024 * 1024 |
| 31 | |
| 32 | @Injectable() |
| 33 | export class TikTokService { |
| 34 | private readonly http: AxiosInstance |
| 35 | |
| 36 | constructor( |
| 37 | private readonly cfg: TiktokConfig, |
| 38 | private readonly mediaService: MediaService, |
| 39 | ) { |
| 40 | this.http = this.createHttpClient() |
| 41 | } |
| 42 | |
| 43 | private readonly apiBaseUrl = 'https://open.tiktokapis.com/v2' |
| 44 | private readonly authUrl = 'https://www.tiktok.com/v2/auth/authorize' |
| 45 | |
| 46 | private createHttpClient(): AxiosInstance { |
| 47 | const http = axios.create() |
| 48 | http.interceptors.response.use( |
| 49 | (response) => { |
| 50 | if (TikTokPlatformException.hasPlatformError(response)) { |
| 51 | throw TikTokPlatformException.fromPlatformResponse(response) |
| 52 | } |
| 53 | return response |
| 54 | }, |
| 55 | (error: AxiosError<TikTokPlatformResponseBody>) => { |
| 56 | throw TikTokPlatformException.fromAxiosError(error) |
| 57 | }, |
| 58 | ) |
| 59 | return http |
| 60 | } |
| 61 | |
| 62 | private async apiRequest<T>( |
| 63 | url: string, |
| 64 | options: TikTokRequestOptions = {}, |
| 65 | accessToken?: string, |
| 66 | ): Promise<T> { |
| 67 | const headers: Record<string, string> = accessToken |
| 68 | ? { |
| 69 | ...(options.headers ?? {}), |
| 70 | 'Authorization': `Bearer ${accessToken}`, |
| 71 | 'Content-Type': 'application/json; charset=UTF-8', |
| 72 | } |
| 73 | : { |
| 74 | ...(options.headers ?? {}), |
| 75 | } |
| 76 | |
| 77 | const response = await this.http.request<TikTokApiResponse<T>>({ |
| 78 | ...options, |
| 79 | method: options.method ?? 'GET', |
| 80 | url, |
| 81 | headers, |
| 82 | }) |
| 83 | |
| 84 | return response.data.data |
| 85 | } |
| 86 | |
| 87 | private async contentRequest<T>( |
| 88 | url: string, |
| 89 | data: TikTokContentRequestBody, |
| 90 | accessToken: string, |
| 91 | ): Promise<T> { |
| 92 | const response = await this.http.post<TikTokApiResponse<T>>( |
| 93 | url, |
| 94 | data, |
| 95 | { |
| 96 | headers: { |
| 97 | 'Authorization': `Bearer ${accessToken}`, |
| 98 | 'Content-Type': 'application/json; charset=UTF-8', |
| 99 | }, |
| 100 | }, |
| 101 | ) |
| 102 | |
| 103 | return response.data.data |
| 104 | } |
| 105 | |
| 106 | private async oauthRequest<T>( |
| 107 | url: string, |
| 108 | data: URLSearchParams, |
| 109 | ): Promise<T> { |
| 110 | const response = await this.http.post<T>(url, data, { |
| 111 | headers: { |
| 112 | 'Content-Type': 'application/x-www-form-urlencoded', |
| 113 | }, |
| 114 | }) |
| 115 | |
| 116 | return response.data |
| 117 | } |
| 118 | |
| 119 | generateAuthUrl(scopes: string[], state: string, codeChallenge?: string): string { |
| 120 | const params = new URLSearchParams({ |
| 121 | client_key: this.cfg.clientId, |
| 122 | scope: scopes.join(','), |
| 123 | response_type: 'code', |
| 124 | redirect_uri: this.cfg.redirectUri, |
| 125 | state, |
| 126 | }) |
| 127 | |
| 128 | if (codeChallenge) { |
| 129 | params.set('code_challenge', codeChallenge) |
| 130 | params.set('code_challenge_method', 'S256') |
| 131 | } |
| 132 | |
| 133 | return `${this.authUrl}?${params.toString()}` |
| 134 | } |
| 135 | |
| 136 | async exchangeCode(code: string, codeVerifier?: string): Promise<{ |
| 137 | accessToken: string |
| 138 | refreshToken: string |
| 139 | expiresAt: Date |
| 140 | refreshExpiresAt: Date |
| 141 | openId: string |
| 142 | scope: string |
| 143 | }> { |
| 144 | const data = new URLSearchParams({ |
| 145 | client_key: this.cfg.clientId, |
| 146 | client_secret: this.cfg.clientSecret, |
| 147 | code, |
| 148 | grant_type: TikTokOAuthGrantType.AuthorizationCode, |
| 149 | redirect_uri: this.cfg.redirectUri, |
| 150 | }) |
| 151 | |
| 152 | if (codeVerifier) { |
| 153 | data.set('code_verifier', codeVerifier) |
| 154 | } |
| 155 | |
| 156 | const result = await this.oauthRequest<TikTokOAuthResponse>( |
| 157 | `${this.apiBaseUrl}/oauth/token/`, |
| 158 | data, |
| 159 | ) |
| 160 | |
| 161 | return { |
| 162 | accessToken: result.access_token, |
| 163 | refreshToken: result.refresh_token, |
| 164 | expiresAt: new Date(Date.now() + result.expires_in * 1000), |
| 165 | refreshExpiresAt: new Date(Date.now() + result.refresh_expires_in * 1000), |
| 166 | openId: result.open_id, |
| 167 | scope: result.scope, |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | async refreshAccessToken(refreshToken: string): Promise<{ |
| 172 | accessToken: string |
| 173 | refreshToken: string |
| 174 | expiresAt: Date |
| 175 | refreshExpiresAt: Date |
| 176 | scope: string |
| 177 | }> { |
| 178 | const result = await this.oauthRequest<TikTokOAuthResponse>( |
| 179 | `${this.apiBaseUrl}/oauth/token/`, |
| 180 | new URLSearchParams({ |
| 181 | client_key: this.cfg.clientId, |
| 182 | client_secret: this.cfg.clientSecret, |
| 183 | grant_type: TikTokOAuthGrantType.RefreshToken, |
| 184 | refresh_token: refreshToken, |
| 185 | }), |
| 186 | ) |
| 187 | |
| 188 | return { |
| 189 | accessToken: result.access_token, |
| 190 | refreshToken: result.refresh_token, |
| 191 | expiresAt: new Date(Date.now() + result.expires_in * 1000), |
| 192 | refreshExpiresAt: new Date(Date.now() + result.refresh_expires_in * 1000), |
| 193 | scope: result.scope, |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | async revokeAccessToken(accessToken: string): Promise<void> { |
| 198 | await this.oauthRequest( |
| 199 | `${this.apiBaseUrl}/oauth/revoke/`, |
| 200 | new URLSearchParams({ |
| 201 | client_key: this.cfg.clientId, |
| 202 | client_secret: this.cfg.clientSecret, |
| 203 | token: accessToken, |
| 204 | }), |
| 205 | ) |
| 206 | } |
| 207 | |
| 208 | async getUserInfo(accessToken: string, fields = 'open_id,union_id,avatar_url,username,display_name,bio_description,follower_count,following_count,likes_count,video_count'): Promise<{ |
| 209 | openId: string |
| 210 | unionId?: string |
| 211 | avatarUrl?: string |
| 212 | username?: string |
| 213 | displayName?: string |
| 214 | bioDescription?: string |
| 215 | followerCount?: number |
| 216 | followingCount?: number |
| 217 | likesCount?: number |
| 218 | videoCount?: number |
| 219 | }> { |
| 220 | const result = await this.apiRequest<{ user: TikTokUserInfo }>( |
| 221 | `${this.apiBaseUrl}/user/info/`, |
| 222 | { |
| 223 | params: { |
| 224 | fields, |
| 225 | }, |
| 226 | }, |
| 227 | accessToken, |
| 228 | ) |
| 229 | |
| 230 | const user = result.user |
| 231 | return { |
| 232 | openId: user.open_id, |
| 233 | unionId: user.union_id, |
| 234 | avatarUrl: user.avatar_url, |
| 235 | username: user.username, |
| 236 | displayName: user.display_name, |
| 237 | bioDescription: user.bio_description, |
| 238 | followerCount: user.follower_count, |
| 239 | followingCount: user.following_count, |
| 240 | likesCount: user.likes_count, |
| 241 | videoCount: user.video_count, |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | async getCreatorInfo(accessToken: string): Promise<TikTokCreatorInfo> { |
| 246 | return this.contentRequest<TikTokCreatorInfo>( |
| 247 | `${this.apiBaseUrl}/post/publish/creator_info/query/`, |
| 248 | {}, |
| 249 | accessToken, |
| 250 | ) |
| 251 | } |
| 252 | |
| 253 | async listVideos( |
| 254 | accessToken: string, |
| 255 | cursor?: string, |
| 256 | limit = 20, |
| 257 | fields?: string, |
| 258 | ): Promise<TikTokVideoQueryResponse> { |
| 259 | const response = await this.http.post<TikTokApiResponse<TikTokVideoQueryResponse>>( |
| 260 | `${this.apiBaseUrl}/video/list/`, |
| 261 | { |
| 262 | max_count: limit, |
| 263 | cursor, |
| 264 | }, |
| 265 | { |
| 266 | params: { fields }, |
| 267 | headers: { |
| 268 | 'Authorization': `Bearer ${accessToken}`, |
| 269 | 'Content-Type': 'application/json; charset=UTF-8', |
| 270 | }, |
| 271 | }, |
| 272 | ) |
| 273 | return response.data.data |
| 274 | } |
| 275 | |
| 276 | async queryVideos( |
| 277 | accessToken: string, |
| 278 | videoIds: string[], |
| 279 | ): Promise<TikTokVideoQueryResponse> { |
| 280 | const response = await this.http.post<TikTokApiResponse<TikTokVideoQueryResponse>>( |
| 281 | `${this.apiBaseUrl}/video/query/`, |
| 282 | { |
| 283 | filters: { video_ids: videoIds }, |
| 284 | }, |
| 285 | { |
| 286 | headers: { |
| 287 | 'Authorization': `Bearer ${accessToken}`, |
| 288 | 'Content-Type': 'application/json; charset=UTF-8', |
| 289 | }, |
| 290 | params: { |
| 291 | fields: 'id,create_time,title,video_description,duration,cover_image_url,share_url,embed_link,view_count,like_count,comment_count,share_count', |
| 292 | }, |
| 293 | }, |
| 294 | ) |
| 295 | return response.data.data |
| 296 | } |
| 297 | |
| 298 | async initVideoPublish( |
| 299 | accessToken: string, |
| 300 | postInfo: TikTokVideoPostInfo, |
| 301 | sourceInfo: TikTokVideoSourceInfo, |
| 302 | ): Promise<TikTokPublishResponse> { |
| 303 | return this.contentRequest<TikTokPublishResponse>( |
| 304 | `${this.apiBaseUrl}/post/publish/video/init/`, |
| 305 | { |
| 306 | post_info: postInfo, |
| 307 | source_info: sourceInfo, |
| 308 | }, |
| 309 | accessToken, |
| 310 | ) |
| 311 | } |
| 312 | |
| 313 | async initPhotoPublish( |
| 314 | accessToken: string, |
| 315 | postInfo: TikTokPhotoPostInfo, |
| 316 | sourceInfo: TikTokPhotoSourceInfo, |
| 317 | ): Promise<TikTokPublishResponse> { |
| 318 | return this.contentRequest<TikTokPublishResponse>( |
| 319 | `${this.apiBaseUrl}/post/publish/content/init/`, |
| 320 | { |
| 321 | media_type: 'PHOTO', |
| 322 | post_mode: 'DIRECT_POST', |
| 323 | post_info: postInfo, |
| 324 | source_info: sourceInfo, |
| 325 | }, |
| 326 | accessToken, |
| 327 | ) |
| 328 | } |
| 329 | |
| 330 | async getPublishStatus( |
| 331 | accessToken: string, |
| 332 | publishId: string, |
| 333 | ): Promise<TikTokPublishStatusResponse> { |
| 334 | const response = await this.http.post<TikTokApiResponse<TikTokPublishStatusResponse>>( |
| 335 | `${this.apiBaseUrl}/post/publish/status/fetch/`, |
| 336 | { publish_id: publishId }, |
| 337 | { |
| 338 | headers: { |
| 339 | 'Authorization': `Bearer ${accessToken}`, |
| 340 | 'Content-Type': 'application/json; charset=UTF-8', |
| 341 | }, |
| 342 | responseType: 'text', |
| 343 | transformResponse: [(data: string) => parse(data, undefined, { |
| 344 | parseNumber: value => isSafeNumber(value) ? Number(value) : value, |
| 345 | })], |
| 346 | }, |
| 347 | ) |
| 348 | return response.data.data |
| 349 | } |
| 350 | |
| 351 | async cancelPublish( |
| 352 | accessToken: string, |
| 353 | publishId: string, |
| 354 | ): Promise<void> { |
| 355 | await this.contentRequest( |
| 356 | `${this.apiBaseUrl}/post/publish/cancel/`, |
| 357 | { publish_id: publishId }, |
| 358 | accessToken, |
| 359 | ) |
| 360 | } |
| 361 | |
| 362 | async uploadVideoFile( |
| 363 | uploadUrl: string, |
| 364 | video: Blob, |
| 365 | fileSize: number, |
| 366 | contentType = 'video/mp4', |
| 367 | ): Promise<void> { |
| 368 | await this.http.put(uploadUrl, video, { |
| 369 | headers: { |
| 370 | 'Content-Type': contentType, |
| 371 | 'Content-Length': fileSize, |
| 372 | 'Content-Range': `bytes 0-${fileSize - 1}/${fileSize}`, |
| 373 | }, |
| 374 | }) |
| 375 | } |
| 376 | |
| 377 | async chunkedUploadVideoFile( |
| 378 | uploadUrl: string, |
| 379 | video: Blob, |
| 380 | range: [number, number], |
| 381 | fileSize: number, |
| 382 | contentType = 'video/mp4', |
| 383 | ): Promise<void> { |
| 384 | await this.http.put(uploadUrl, video, { |
| 385 | headers: { |
| 386 | 'Content-Type': contentType, |
| 387 | 'Content-Length': range[1] - range[0] + 1, |
| 388 | 'Content-Range': `bytes ${range[0]}-${range[1]}/${fileSize}`, |
| 389 | }, |
| 390 | }) |
| 391 | } |
| 392 | |
| 393 | async uploadVideo( |
| 394 | uploadUrl: string, |
| 395 | videoUrl: string, |
| 396 | ): Promise<void> { |
| 397 | await this.mediaService.withUploadSource({ |
| 398 | platform: AccountType.TikTok, |
| 399 | endpoint: 'downloadVideo', |
| 400 | url: videoUrl, |
| 401 | }, async (source) => { |
| 402 | const totalSize = source.sizeBytes |
| 403 | const contentType = source.contentType ?? 'video/mp4' |
| 404 | |
| 405 | if (totalSize <= MAX_SINGLE_CHUNK_SIZE) { |
| 406 | await this.uploadVideoFile(uploadUrl, await source.blob(), totalSize, contentType) |
| 407 | return |
| 408 | } |
| 409 | |
| 410 | const plan = this.getUploadPlan(totalSize) |
| 411 | |
| 412 | for (const [chunkStart, chunkEnd] of plan.ranges) { |
| 413 | await this.chunkedUploadVideoFile( |
| 414 | uploadUrl, |
| 415 | await source.blob({ start: chunkStart, end: chunkEnd }), |
| 416 | [chunkStart, chunkEnd], |
| 417 | totalSize, |
| 418 | contentType, |
| 419 | ) |
| 420 | } |
| 421 | }) |
| 422 | } |
| 423 | |
| 424 | getUploadPlan(fileSize: number): TikTokUploadPlan { |
| 425 | if (fileSize <= 0) { |
| 426 | throw TikTokPlatformException.fromPlatformError({ |
| 427 | code: ResponseCode.ChannelPlatformApiFailed, |
| 428 | category: PlatformErrorCategory.Unknown, |
| 429 | context: { endpoint: 'getUploadPlan' }, |
| 430 | platformCode: 'invalid_file_size', |
| 431 | }) |
| 432 | } |
| 433 | |
| 434 | if (fileSize <= MAX_SINGLE_CHUNK_SIZE) { |
| 435 | return { |
| 436 | chunkSize: fileSize, |
| 437 | totalChunkCount: 1, |
| 438 | ranges: [[0, fileSize - 1]], |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | const chunkSize = 10 * 1024 * 1024 |
| 443 | const totalChunkCount = Math.floor(fileSize / chunkSize) |
| 444 | |
| 445 | const ranges: Array<[number, number]> = [] |
| 446 | |
| 447 | for (let index = 0; index < totalChunkCount; index++) { |
| 448 | const start = index * chunkSize |
| 449 | const isLastChunk = index === totalChunkCount - 1 |
| 450 | const end = isLastChunk ? fileSize - 1 : start + chunkSize - 1 |
| 451 | ranges.push([start, end]) |
| 452 | } |
| 453 | |
| 454 | const resolvedLastChunkSize = ranges[ranges.length - 1][1] - ranges[ranges.length - 1][0] + 1 |
| 455 | if ( |
| 456 | chunkSize < MIN_CHUNK_SIZE |
| 457 | || chunkSize > MAX_SINGLE_CHUNK_SIZE |
| 458 | || resolvedLastChunkSize < MIN_CHUNK_SIZE |
| 459 | || resolvedLastChunkSize > 128 * 1024 * 1024 |
| 460 | || totalChunkCount > 1000 |
| 461 | ) { |
| 462 | throw TikTokPlatformException.fromPlatformError({ |
| 463 | code: ResponseCode.ChannelPlatformApiFailed, |
| 464 | category: PlatformErrorCategory.Unknown, |
| 465 | context: { endpoint: 'getUploadPlan' }, |
| 466 | platformCode: 'invalid_chunk_plan', |
| 467 | }) |
| 468 | } |
| 469 | |
| 470 | return { |
| 471 | chunkSize, |
| 472 | totalChunkCount, |
| 473 | ranges, |
| 474 | } |
| 475 | } |
| 476 | } |
| 477 |