v1.6: Platform Gateway — Amazon/JD/Taobao/PDD/TikTok 5平台API集成 + start_provision_v2.sh

gateway/pdd.py

@@ -0,0 +1,138 @@
+# -*- coding: utf-8 -*-
+"""PDD (拼多多) DDK open platform adapter.
+
+Endpoint: https://api.pinduoduo.com/router
+Auth:     client_id + client_secret + access_token (多多进宝 OAuth)
+Sign:     MD5(secret + sorted(k1v1k2v2...) + secret) uppercased
+Method:   pdd.ddk.goods.search (by keyword) / pdd.ddk.goods.detail (by goods_sign)
+
+cred shape:
+  {"client_id": "...", "client_secret": "...", "access_token": "..."}
+
+query shape:
+  {"keyword": "iPhone 15"}               -> goods.search
+  {"goods_sign": "c9r2omogKFFAc7WB..."}  -> goods.detail
+  {"goods_id": "12345"}                   -> alias of goods_sign fallback
+"""
+
+from __future__ import annotations
+
+import hashlib
+import json
+import logging
+import time
+from typing import Any
+from urllib.parse import urlencode
+
+import httpx
+
+from .base import UnifiedResult
+
+log = logging.getLogger("chathub.gateway.pdd")
+
+API_URL = "https://api.pinduoduo.com/router"
+SEARCH_METHOD = "pdd.ddk.goods.search"
+DETAIL_METHOD = "pdd.ddk.goods.detail"
+
+
+def _md5_sign(secret: str, params: dict[str, str]) -> str:
+    """PDD sign: secret + sorted(k1v1k2v2...) + secret, MD5, uppercase."""
+    pieces = "".join(f"{k}{params[k]}" for k in sorted(params.keys()))
+    return hashlib.md5((secret + pieces + secret).encode("utf-8")).hexdigest().upper()
+
+
+async def fetch(creds: dict, query: dict) -> UnifiedResult:
+    keyword = query.get("keyword")
+    goods_sign = query.get("goods_sign") or query.get("sku")
+
+    client_id = creds.get("client_id") or creds.get("app_id") or creds.get("app_key")
+    client_secret = creds.get("client_secret") or creds.get("app_secret")
+    access_token = creds.get("access_token") or creds.get("refresh_token")
+
+    if not client_id or not client_secret:
+        return UnifiedResult(
+            status="no_creds",
+            error="missing client_id/client_secret (set them via channelAuth)",
+            channel="pdd",
+        )
+    if not access_token:
+        return UnifiedResult(
+            status="no_creds",
+            error="missing access_token (obtain via 多多进宝 OAuth authorization)",
+            channel="pdd",
+        )
+
+    if goods_sign:
+        method = DETAIL_METHOD
+        biz = {"goods_sign": str(goods_sign)}
+    elif keyword:
+        method = SEARCH_METHOD
+        biz = {"keyword": str(keyword), "page": 1, "page_size": 10}
+    else:
+        return UnifiedResult(status="error", error="missing keyword or goods_sign", channel="pdd")
+
+    public_params = {
+        "type": method,
+        "client_id": client_id,
+        "timestamp": str(int(time.time() * 1000)),
+        "data_type": "JSON",
+        "version": "V1",
+        "access_token": access_token,
+    }
+    for k, v in biz.items():
+        public_params[k] = v
+    public_params["sign"] = _md5_sign(client_secret, public_params)
+
+    try:
+        async with httpx.AsyncClient(timeout=8.0) as client:
+            r = await client.post(API_URL, data=urlencode(public_params), headers={"Content-Type": "application/x-www-form-urlencoded"})
+            r.raise_for_status()
+            payload = r.json()
+    except httpx.HTTPStatusError as e:
+        return UnifiedResult(
+            status="error",
+            error=f"HTTP {e.response.status_code}: {e.response.text[:200]}",
+            channel="pdd",
+        )
+    except Exception as e:
+        return UnifiedResult(status="error", error=str(e)[:200], channel="pdd")
+
+    if goods_sign:
+        return _parse_detail(payload, goods_sign)
+    return _parse_search(payload, keyword)
+
+
+def _parse_detail(payload: dict, goods_sign: str) -> UnifiedResult:
+    inner = payload.get("goods_detail_response") or {}
+    data = inner.get("goods_details") or []
+    if not data:
+        return UnifiedResult(status="error", error=f"goods_sign {goods_sign} not found", channel="pdd")
+    g = data[0]
+    return UnifiedResult(
+        status="success",
+        data={
+            "title": g.get("goods_name") or f"goods {goods_sign[:10]}",
+            "price": (g.get("min_group_price") or 0) / 100,
+            "currency": "CNY",
+            "url": f"https://mobile.yangkeduo.com/goods.html?goods_id={g.get('goods_id', '')}",
+            "image": (g.get("goods_image_url") or "").split(",")[0] if g.get("goods_image_url") else None,
+            "in_stock": (g.get("goods_stock_num") or 0) > 0,
+        },
+        channel="pdd",
+    )
+
+
+def _parse_search(payload: dict, keyword: str) -> UnifiedResult:
+    inner = payload.get("goods_search_response") or {}
+    items = inner.get("goods_list") or []
+    if not items:
+        return UnifiedResult(status="error", error=f"no items for keyword '{keyword}'", channel="pdd")
+    out = []
+    for g in items[:3]:
+        out.append({
+            "title": g.get("goods_name") or "(无标题)",
+            "price": (g.get("min_group_price") or 0) / 100,
+            "currency": "CNY",
+            "url": f"https://mobile.yangkeduo.com/goods.html?goods_id={g.get('goods_id', '')}",
+        })
+    return UnifiedResult(status="success", data=out, channel="pdd")