| 1 | import log from 'electron-log/main.js' |
| 2 | import type { |
| 3 | ImageGenerationProviderAdapter, |
| 4 | ImageGenerationResult, |
| 5 | ResolvedImageModelConfig |
| 6 | } from '../types' |
| 7 | import { collectImageResults, joinUrl, readJsonResponse, readRecord, readString } from './utils' |
| 8 | |
| 9 | const DEFAULT_BASE_URL = 'https://ark.cn-beijing.volces.com' |
| 10 | const DEFAULT_ENDPOINT_PATH = '/api/v3/images/generations' |
| 11 | const DEFAULT_MODEL = 'doubao-seedream-5-0-260128' |
| 12 | const LOG_TAG = 'seedream' |
| 13 | const LABEL = 'Seedream' |
| 14 | |
| 15 | const buildEndpoint = (config: ResolvedImageModelConfig): string => { |
| 16 | const endpoint = readString(config.modelConfig, 'endpoint') |
| 17 | if (endpoint) return endpoint |
| 18 | const baseUrl = readString(config.modelConfig, 'baseUrl') |
| 19 | if (baseUrl) { |
| 20 | try { |
| 21 | const parsed = new URL(baseUrl) |
| 22 | if (parsed.pathname && parsed.pathname !== '/') return baseUrl |
| 23 | } catch { |
| 24 | return baseUrl |
| 25 | } |
| 26 | } |
| 27 | return joinUrl(baseUrl || DEFAULT_BASE_URL, DEFAULT_ENDPOINT_PATH) |
| 28 | } |
| 29 | |
| 30 | const resolveSize = (config: ResolvedImageModelConfig, inputSize: string): string => { |
| 31 | const configuredSize = readString(config.modelConfig, 'size') || readString(config.modelConfig, 'imageSize') |
| 32 | const size = configuredSize || inputSize |
| 33 | if (!size) throw new Error(`${LABEL} 需要 size，请在模型配置里填写 sizes 并选择一个值。`) |
| 34 | return size |
| 35 | } |
| 36 | |
| 37 | const readNumber = (config: ResolvedImageModelConfig, key: string): number | undefined => { |
| 38 | const value = Number(config.modelConfig[key]) |
| 39 | return Number.isFinite(value) ? value : undefined |
| 40 | } |
| 41 | |
| 42 | const readBoolean = (config: ResolvedImageModelConfig, key: string): boolean | undefined => { |
| 43 | const value = config.modelConfig[key] |
| 44 | if (typeof value === 'boolean') return value |
| 45 | if (typeof value === 'string') { |
| 46 | const normalized = value.trim().toLowerCase() |
| 47 | if (normalized === 'true') return true |
| 48 | if (normalized === 'false') return false |
| 49 | } |
| 50 | return undefined |
| 51 | } |
| 52 | |
| 53 | const readBooleanWithDefault = ( |
| 54 | config: ResolvedImageModelConfig, |
| 55 | key: string, |
| 56 | fallback: boolean |
| 57 | ): boolean => readBoolean(config, key) ?? fallback |
| 58 | |
| 59 | const resolveResponseFormat = (config: ResolvedImageModelConfig): 'url' | 'b64_json' => { |
| 60 | const value = |
| 61 | readString(config.modelConfig, 'response_format') || |
| 62 | readString(config.modelConfig, 'responseFormat') |
| 63 | return value === 'b64_json' ? 'b64_json' : 'url' |
| 64 | } |
| 65 | |
| 66 | const buildOptionalParameters = ( |
| 67 | config: ResolvedImageModelConfig, |
| 68 | input: Parameters<ImageGenerationProviderAdapter['generate']>[1] |
| 69 | ): Record<string, unknown> => { |
| 70 | const params: Record<string, unknown> = { |
| 71 | sequential_image_generation: |
| 72 | readString(config.modelConfig, 'sequential_image_generation') || |
| 73 | readString(config.modelConfig, 'sequentialImageGeneration') || |
| 74 | 'disabled', |
| 75 | stream: readBooleanWithDefault(config, 'stream', false) |
| 76 | } |
| 77 | if (typeof input.seed === 'number') params.seed = input.seed |
| 78 | if (input.negativePrompt) params.negative_prompt = input.negativePrompt |
| 79 | |
| 80 | const guidanceScale = readNumber(config, 'guidanceScale') ?? readNumber(config, 'guidance_scale') |
| 81 | if (guidanceScale !== undefined) params.guidance_scale = guidanceScale |
| 82 | |
| 83 | const watermark = readBoolean(config, 'watermark') |
| 84 | if (watermark !== undefined) params.watermark = watermark |
| 85 | |
| 86 | return params |
| 87 | } |
| 88 | |
| 89 | const collectSeedreamImages = async ( |
| 90 | payload: unknown, |
| 91 | signal?: AbortSignal |
| 92 | ): Promise<ImageGenerationResult[]> => collectImageResults(payload, signal) |
| 93 | |
| 94 | const toErrorMessage = (error: unknown): string => |
| 95 | error instanceof Error ? error.message : String(error) |
| 96 | |
| 97 | export const seedreamAdapter: ImageGenerationProviderAdapter = { |
| 98 | async generate(config, input) { |
| 99 | const startedAt = Date.now() |
| 100 | const endpoint = buildEndpoint(config) |
| 101 | const model = readString(config.modelConfig, 'model') || DEFAULT_MODEL |
| 102 | const apiKey = readString(config.modelConfig, 'apiKey') |
| 103 | if (!apiKey) throw new Error(`${LABEL} 需要 API Key。`) |
| 104 | |
| 105 | const size = resolveSize(config, input.size) |
| 106 | const responseFormat = resolveResponseFormat(config) |
| 107 | const requestBody = readRecord(config.modelConfig.requestBody) |
| 108 | const headers = readRecord(config.modelConfig.headers) as Record<string, string> |
| 109 | const body = { |
| 110 | model, |
| 111 | prompt: input.prompt, |
| 112 | size, |
| 113 | n: input.count, |
| 114 | response_format: responseFormat, |
| 115 | ...buildOptionalParameters(config, input), |
| 116 | ...requestBody |
| 117 | } |
| 118 | |
| 119 | log.info(`[images:${LOG_TAG}] generation start`, { |
| 120 | configId: config.id, |
| 121 | configName: config.name, |
| 122 | model, |
| 123 | endpoint, |
| 124 | size, |
| 125 | count: input.count, |
| 126 | responseFormat, |
| 127 | promptLength: input.prompt.length, |
| 128 | hasSeed: typeof input.seed === 'number', |
| 129 | requestBodyKeys: Object.keys(requestBody).sort() |
| 130 | }) |
| 131 | |
| 132 | try { |
| 133 | const response = await fetch(endpoint, { |
| 134 | method: 'POST', |
| 135 | signal: input.signal, |
| 136 | headers: { |
| 137 | authorization: `Bearer ${apiKey}`, |
| 138 | 'content-type': 'application/json', |
| 139 | ...headers |
| 140 | }, |
| 141 | body: JSON.stringify(body) |
| 142 | }) |
| 143 | log.info(`[images:${LOG_TAG}] request end`, { |
| 144 | model, |
| 145 | status: response.status, |
| 146 | ok: response.ok, |
| 147 | elapsedMs: Date.now() - startedAt |
| 148 | }) |
| 149 | const payload = await readJsonResponse(response) |
| 150 | const results = await collectSeedreamImages(payload, input.signal) |
| 151 | if (results.length === 0) throw new Error(`${LABEL} 未返回图片`) |
| 152 | log.info(`[images:${LOG_TAG}] generation completed`, { |
| 153 | model, |
| 154 | resultCount: results.length, |
| 155 | elapsedMs: Date.now() - startedAt |
| 156 | }) |
| 157 | return results.slice(0, input.count) |
| 158 | } catch (error) { |
| 159 | log.error(`[images:${LOG_TAG}] generation failed`, { |
| 160 | model, |
| 161 | message: toErrorMessage(error), |
| 162 | elapsedMs: Date.now() - startedAt |
| 163 | }) |
| 164 | throw error |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 |