381 lines
17 KiB
Python
381 lines
17 KiB
Python
"""套图规划 / 一键生成 / 任务查询 / 结果导出 / 单张 AI 生图。
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按 docs/v2.1/api.md §2-6 实现：引擎平移自 image-suite-studio（services/planner|generator|
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watermark + services/prompts），任务持久化到数据库，由独立 Worker 执行。
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生成图回调回写 product_assets(group_key='generated')；product_id 缺省时只落盘不回写。
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业务逻辑（texts_to_raw / 模型校验 / generated 回写）在 services/suite_service.py。
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注：V2.1 阶段本组接口暂不接鉴权（现有鉴权后续可能重做）。
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"""
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from __future__ import annotations
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import io
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import re
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import tempfile
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import uuid
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import zipfile
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from collections.abc import Iterator
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from fastapi import APIRouter, HTTPException
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from fastapi.responses import StreamingResponse
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from config import get_settings
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from schemas.suite import (
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PLATFORM_SPECS,
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SUPPORTED_TYPES,
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ImageEditSingleRequest,
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ImageEditTaskResponse,
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PlanItemOut,
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PlanResponse,
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SuiteCreateResponse,
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SuiteGenerateRequest,
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SuiteOut,
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SuitePlanRequest,
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api_model,
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resolve_provider,
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)
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from services.generator import GENERATORS
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from services.jobs import (
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ITEM_DONE,
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cancel_job,
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create_image_job,
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get_job,
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list_product_jobs,
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retry_failed_items,
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retry_failed_item,
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suite_view,
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)
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from services.planner import generate_plan
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from services.prompts import type_name
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from services.storage import ResourceSizeLimitError, download_bytes, local_path, read_local_bytes
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from services.suite_service import texts_to_raw, validate_model
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router = APIRouter(prefix="/api", tags=["suite"])
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_DIMENSION_PARAM_RE = re.compile(
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r"尺寸|长宽高|长度|宽度|高度|厚度|深度|直径|dimension|length|width|height|depth|thickness|diameter",
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re.IGNORECASE,
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)
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def _with_dimensions(raw: dict, dimensions, *, required: bool = False) -> dict:
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"""将已填写的尺寸方向放入提示词上下文；未填写方向绝不传给绘制提示词。"""
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if dimensions is None:
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if required:
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raise HTTPException(status_code=400, detail="生成尺寸标注图至少需要填写一项商品尺寸")
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return raw
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known_dimensions = {
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key: value for key, value in {
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"length": dimensions.length,
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"width": dimensions.width,
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"height": dimensions.height,
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}.items() if value is not None and value > 0
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}
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if not known_dimensions:
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if required:
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raise HTTPException(status_code=400, detail="生成尺寸标注图至少需要填写一项商品尺寸")
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return raw
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enriched = dict(raw)
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# 表单尺寸是尺寸标注图的唯一事实来源。原始商品参数常含完整 L×W×H，
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# 若继续带进 prompt，模型会把未填写的方向也画出来。
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params = raw.get("params") or []
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if isinstance(params, list):
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enriched["params"] = [
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pair for pair in params
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if isinstance(pair, dict) and not _DIMENSION_PARAM_RE.search(str(pair.get("key") or ""))
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]
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enriched["dimensions"] = {**known_dimensions, "unit": dimensions.unit}
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return enriched
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def _stream_file(handle: io.BufferedRandom, chunk_size: int = 64 * 1024) -> Iterator[bytes]:
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"""以固定块返回临时 ZIP，释放响应完成后的临时文件。"""
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try:
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while chunk := handle.read(chunk_size):
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yield chunk
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finally:
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handle.close()
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# ── 出图方案规划 ──────────────────────────────────────────────────────────
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@router.post("/suite/plan", response_model=PlanResponse)
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async def plan_suite(req: SuitePlanRequest) -> PlanResponse:
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"""DeepSeek 根据商品信息生成出图方案（同步接口，数秒级）。"""
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product_info = _with_dimensions(texts_to_raw(req.texts), req.dimensions)
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if not product_info.get("title"):
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raise HTTPException(status_code=400, detail="缺少商品标题，无法规划")
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try:
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result = await generate_plan(
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product_info, req.sku_variants, req.image_stats, req.platform,
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requirements=req.requirements,
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)
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except RuntimeError as exc:
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raise HTTPException(status_code=502, detail=str(exc)) from exc
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except Exception as exc: # noqa: BLE001
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raise HTTPException(status_code=502, detail=f"规划失败: {exc}") from exc
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return PlanResponse(summary=result["summary"], items=[PlanItemOut(**i) for i in result["items"]])
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# ── 一键生成 ─────────────────────────────────────────────────────────────
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@router.post("/suite/generate", response_model=SuiteCreateResponse)
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async def generate_suite(req: SuiteGenerateRequest) -> SuiteCreateResponse:
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if not req.images:
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raise HTTPException(status_code=400, detail="未勾选任何图片，无法生成")
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# 生成任务列表：方案优先；无方案时按 types（空则默认四种）
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if req.plan:
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jobs: list[dict] = []
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for item in req.plan:
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if item.count <= 0:
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continue
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if item.kind not in SUPPORTED_TYPES:
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raise HTTPException(status_code=400, detail=f"方案项「{item.title}」的图类型不支持: {item.kind}")
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# 同一项多张 → 展开为多任务，第二张起在标题上加序号
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for n in range(item.count):
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jobs.append({
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"kind": item.kind,
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"title": item.title if item.count == 1 else f"{item.title}{n + 1}",
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"detail": item.detail,
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"prompt_hint": item.prompt_hint,
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"variant_name": item.variant_name,
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})
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if not jobs:
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raise HTTPException(status_code=400, detail="方案中所有项的数量都是 0")
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else:
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types = req.types or ["white_bg", "key_features", "lifestyle", "multi_scene"]
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bad = [t for t in types if t not in SUPPORTED_TYPES]
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if bad:
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raise HTTPException(status_code=400, detail=f"不支持的图类型: {bad}")
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jobs = [{"kind": t, "title": type_name(t), "detail": "", "prompt_hint": "", "variant_name": None} for t in types]
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if req.platform not in PLATFORM_SPECS:
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raise HTTPException(status_code=400, detail=f"不支持的目标平台: {req.platform}（ozon | wb | cn）")
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spec = PLATFORM_SPECS[req.platform]
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settings = get_settings()
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# 前端只传模型名：已知模型直接路由到对应 provider（如 gpt-image-2-vip → rightapi、gpt-image-2@pcore → pcore）
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provider_name = resolve_provider(req.model, None, settings.image_provider)
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validate_model(provider_name, req.model)
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model = api_model(req.model) # 剥 @provider 后缀，供应商侧只认裸模型名
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product_id = (req.product_id or "").strip() or None
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if product_id:
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try:
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uuid.UUID(product_id)
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except ValueError as exc:
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raise HTTPException(status_code=400, detail="product_id 不是合法 UUID") from exc
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task = await create_image_job(
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product_id=product_id,
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kind="image_suite",
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priority=0,
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provider=provider_name,
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model=model,
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platform=req.platform,
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lang=spec["lang"],
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ratio=spec["ratio"],
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style_set=req.style_set,
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request_payload={
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"context": _with_dimensions(texts_to_raw(req.texts), req.dimensions),
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"style_prompt": req.style_prompt,
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"requirements": req.requirements,
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"watermark": req.watermark.model_dump() if req.watermark else None,
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"append": bool(product_id),
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# main 组优先；variant_name 精确匹配由 Worker 复用原有选图规则。
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"ref_images": [
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{"url": image.url, "group_key": image.group_key, "variant_name": image.variant_name}
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for image in sorted(req.images, key=lambda image: 0 if image.group_key == "main" else 1)
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],
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},
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item_payloads=[{**job, "position": index} for index, job in enumerate(jobs)],
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)
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return SuiteCreateResponse(suite_id=str(task.id))
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# ── 任务查询 / 结果导出 ──────────────────────────────────────────────────
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@router.get("/suites/{suite_id}", response_model=SuiteOut)
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async def get_suite(suite_id: str):
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result = await get_job(suite_id)
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if result is None:
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raise HTTPException(status_code=404, detail="任务不存在")
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return SuiteOut(**suite_view(*result))
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@router.get("/products/{product_id}/suites", response_model=list[SuiteOut])
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async def list_suites(product_id: str, active_only: bool = False):
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"""试算页恢复商品的未完成任务；后续任务中心可复用。"""
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jobs = await list_product_jobs(product_id, active_only=active_only, kinds=("image_suite", "image_edit"))
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views: list[SuiteOut] = []
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for job in jobs:
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result = await get_job(str(job.id))
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if result is not None:
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views.append(SuiteOut(**suite_view(*result)))
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return views
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@router.post("/suites/{suite_id}/cancel", response_model=SuiteOut)
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async def cancel_suite(suite_id: str):
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task = await cancel_job(suite_id)
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if task is None:
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raise HTTPException(status_code=404, detail="任务不存在")
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result = await get_job(str(task.id))
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if result is None:
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raise HTTPException(status_code=404, detail="任务不存在")
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return SuiteOut(**suite_view(*result))
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@router.post("/suites/{suite_id}/retry", response_model=SuiteOut)
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async def retry_suite(suite_id: str):
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task = await retry_failed_items(suite_id)
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if task is None:
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raise HTTPException(status_code=404, detail="任务不存在")
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result = await get_job(str(task.id))
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if result is None:
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raise HTTPException(status_code=404, detail="任务不存在")
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return SuiteOut(**suite_view(*result))
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@router.post("/suites/{suite_id}/items/{item_id}/retry", response_model=SuiteOut)
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async def retry_suite_item(suite_id: str, item_id: str):
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task = await retry_failed_item(suite_id, item_id)
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if task is None:
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raise HTTPException(status_code=404, detail="任务或子项不存在")
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result = await get_job(str(task.id))
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if result is None:
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raise HTTPException(status_code=404, detail="任务不存在")
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return SuiteOut(**suite_view(*result))
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@router.get("/suites/{suite_id}/zip")
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async def download_suite_zip(suite_id: str):
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"""把任务内所有成功图打包成 ZIP（中文文件名）。"""
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result = await get_job(suite_id)
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if result is None:
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raise HTTPException(status_code=404, detail="任务不存在")
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task, task_items = result
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settings = get_settings()
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images = [image for image in task_items if image.status == ITEM_DONE and image.result_url]
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if len(images) > settings.export_max_images:
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raise HTTPException(status_code=413, detail=f"该任务有 {len(images)} 张图片，单次最多导出 {settings.export_max_images} 张")
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archive = tempfile.SpooledTemporaryFile(
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max_size=settings.export_zip_memory_threshold_bytes,
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mode="w+b",
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)
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total_source_bytes = 0
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try:
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with zipfile.ZipFile(archive, "w", zipfile.ZIP_DEFLATED) as zf:
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seen: set[str] = set()
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for i, img in enumerate(images):
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path = local_path(img.result_url or "")
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try:
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if path is not None:
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data, suffix = read_local_bytes(path), path.suffix or ".jpg"
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else: # 七牛等远程存储：直接拉取公开 URL
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data, _ = await download_bytes(img.result_url or "")
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suffix = ".png" if data[:8] == b"\x89PNG\r\n\x1a\n" else ".jpg"
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except ResourceSizeLimitError as exc:
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raise HTTPException(status_code=413, detail=f"无法导出「{img.name}」：{exc}") from exc
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except Exception: # noqa: BLE001
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continue
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total_source_bytes += len(data)
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if total_source_bytes > settings.export_zip_max_bytes:
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raise HTTPException(
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status_code=413,
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detail=f"导出图片总大小超过 {settings.export_zip_max_bytes // 1024 // 1024} MB，请减少图片后重试",
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)
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payload = img.payload or {}
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filename = payload.get("title") or payload.get("kind") or "AI 生图"
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if filename in seen: # 同类型多张时加序号防覆盖
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filename = f"{filename}-{i + 1}"
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seen.add(filename)
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zf.writestr(f"{filename}{suffix}", data)
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if archive.tell() > settings.export_zip_max_bytes:
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raise HTTPException(
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status_code=413,
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detail=f"导出 ZIP 超过 {settings.export_zip_max_bytes // 1024 // 1024} MB，请减少图片后重试",
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)
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except Exception:
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archive.close()
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raise
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archive.seek(0)
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return StreamingResponse(
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_stream_file(archive),
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media_type="application/zip",
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headers={"Content-Disposition": f"attachment; filename=\"suite-{suite_id}.zip\""},
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)
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# ── 单张 AI 生图（V2.1 新增，ISS 无对应实现）──────────────────────────────
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@router.post("/suite/image-edit", response_model=ImageEditTaskResponse)
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async def suite_image_edit(req: ImageEditSingleRequest) -> ImageEditTaskResponse:
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"""提交单张图生图任务；立即返回任务 ID，实际生成在统一队列异步执行。"""
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settings = get_settings()
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provider_name = resolve_provider(req.model, None, settings.image_provider)
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if provider_name not in GENERATORS:
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raise HTTPException(status_code=400, detail=f"未知 provider: {provider_name}")
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validate_model(provider_name, req.model)
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spec = {"lang": "ru", "ratio": "3:4"} # 试算页固定 Ozon 规格（俄文图内文案 · 3:4）
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model = api_model(req.model) # 剥 @provider 后缀，供应商侧只认裸模型名
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product_id = (req.product_id or "").strip() or None
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if product_id:
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try:
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uuid.UUID(product_id)
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except ValueError as exc:
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raise HTTPException(status_code=400, detail="product_id 不是合法 UUID") from exc
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# 单图编辑优先级高于套图；支持多张参考底图，保持传入顺序并去重。
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ref_urls = list(dict.fromkeys(url for url in [*req.image_urls, req.image_url] if url))
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if not ref_urls:
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raise HTTPException(status_code=400, detail="请至少选择一张参考底图")
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if req.mode == "outpaint":
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if provider_name != "pcore":
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raise HTTPException(status_code=400, detail="仅扩图当前仅支持 Pcore gpt-image-2")
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if len(ref_urls) != 1:
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raise HTTPException(status_code=400, detail="仅扩图只能选择一张参考底图")
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if req.generate_size_chart:
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raise HTTPException(status_code=400, detail="仅扩图不能同时生成尺寸标注图")
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# prompt_extra 清空展示文案，避免中文 UI 文案进入模型 prompt。
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is_size_chart = bool(req.generate_size_chart)
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task = await create_image_job(
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product_id=product_id,
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kind="image_edit",
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priority=10,
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provider=provider_name,
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model=model,
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platform="ozon",
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lang=spec["lang"],
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ratio=spec["ratio"],
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# 仅扩图与用户明确填写的 AI 编辑要求都不得继承默认「纯净棚拍」风格。
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style_set=0 if req.mode == "outpaint" or bool(req.prompt.strip()) else 5,
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request_payload={
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"context": _with_dimensions({"title": "AI 精修"}, req.dimensions, required=is_size_chart),
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"style_prompt": None,
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"requirements": req.prompt,
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"operation": req.mode,
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# 用户写了要求时，这一轮只执行其要求，不再拼营销图、默认风格或默认俄文文案。
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"requirements_exclusive": bool(req.mode == "edit" and not is_size_chart and req.prompt.strip()),
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"watermark": req.watermark.model_dump() if req.watermark else None,
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"append": bool(req.append and product_id),
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"after_asset_id": req.after_asset_id,
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"ref_images": [{"url": url, "group_key": "main", "variant_name": None} for url in ref_urls],
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},
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item_payloads=[{
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"position": 0,
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"kind": "size_chart" if is_size_chart else "custom",
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"title": "尺寸标注图" if is_size_chart else ("仅扩图" if req.mode == "outpaint" else "AI生图"),
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"detail": "",
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"prompt_hint": "",
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"variant_name": None,
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"prompt_extra": {"title": "", "detail": "", "prompt_hint": ""},
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}],
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)
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return ImageEditTaskResponse(suite_id=str(task.id))
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