feat(report): 上报更低价后端——price_report 表 + 提交/列表接口

- 新表 price_report:关联比价记录,存原最低价快照(反查 best_*)/上报平台+价/截图URL/审核状态(pending/approved/rejected)/奖励字段
- POST /api/v1/report (multipart):反查比价记录填原最低价,校验上报价 < 原最低价(D),截图复用 core.media 落 /media/price_report/,提交一律 pending
- GET /api/v1/report/records?status= :按状态筛选 + 四态 counts,供「上报记录」页
- core.media 加 save_report_image;main 挂 report 路由;models 登记 PriceReport
- alembic 迁移仅建 price_report(autogenerate 误检的「删 order_record」已手动剔除——那是降级为审计的历史表)

奖励发放(通过→钱包+1000金币)是人工审核后台动作,本期不含。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

alembic/versions/9258bddde4ea_新增_price_report_上报更低价表.py

@@ -0,0 +1,65 @@
+"""新增 price_report 上报更低价表
+
+Revision ID: 9258bddde4ea
+Revises: ad60a1b2c3d4
+Create Date: 2026-06-05 10:15:51.508598
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '9258bddde4ea'
+down_revision: Union[str, Sequence[str], None] = 'ad60a1b2c3d4'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('price_report',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('user_id', sa.Integer(), nullable=False),
+    sa.Column('comparison_record_id', sa.Integer(), nullable=True),
+    sa.Column('store_name', sa.String(length=128), nullable=True),
+    sa.Column('dish_summary', sa.String(length=256), nullable=True),
+    sa.Column('original_platform_id', sa.String(length=32), nullable=True),
+    sa.Column('original_platform_name', sa.String(length=32), nullable=True),
+    sa.Column('original_price_cents', sa.Integer(), nullable=True),
+    sa.Column('reported_platform_id', sa.String(length=32), nullable=False),
+    sa.Column('reported_platform_name', sa.String(length=32), nullable=False),
+    sa.Column('reported_price_cents', sa.Integer(), nullable=False),
+    sa.Column('images', sa.JSON(), nullable=False),
+    sa.Column('status', sa.String(length=16), nullable=False),
+    sa.Column('reject_reason', sa.String(length=256), nullable=True),
+    sa.Column('reward_coins', sa.Integer(), nullable=True),
+    sa.Column('reviewed_at', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+    sa.ForeignKeyConstraint(['comparison_record_id'], ['comparison_record.id'], ),
+    sa.ForeignKeyConstraint(['user_id'], ['user.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('price_report', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_price_report_comparison_record_id'), ['comparison_record_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_price_report_created_at'), ['created_at'], unique=False)
+        batch_op.create_index(batch_op.f('ix_price_report_status'), ['status'], unique=False)
+        batch_op.create_index(batch_op.f('ix_price_report_user_id'), ['user_id'], unique=False)
+    # 注:autogenerate 另检测到「删除 order_record 表」——那是已降级为审计的历史表
+    #     (model 已移除、库表保留),与本次无关,手动剔除,避免误删他人审计数据。
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    # (对称:upgrade 未删 order_record,downgrade 也不重建它)
+    with op.batch_alter_table('price_report', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_price_report_user_id'))
+        batch_op.drop_index(batch_op.f('ix_price_report_status'))
+        batch_op.drop_index(batch_op.f('ix_price_report_created_at'))
+        batch_op.drop_index(batch_op.f('ix_price_report_comparison_record_id'))
+
+    op.drop_table('price_report')
+    # ### end Alembic commands ###

app/api/v1/report.py

@@ -0,0 +1,145 @@
+"""上报更低价 endpoint。
+
+路由前缀 `/api/v1/report`,需 Bearer 鉴权(上报绑登录用户)。
+  POST /         提交上报(multipart:comparison_record_id / reported_platform_id /
+                 reported_price(元) + images 1~4 张)
+  GET  /records  上报记录列表(?status= pending/approved/rejected 可选筛选)
+
+要点:
+- 截图复用 [app.core.media] 落盘到 /media/price_report/。
+- 原最低价由 comparison_record_id 反查比价记录 best_*(不信任客户端传的快照)。
+- 校验(D):上报价必须 < 原最低价,否则 400。
+- 提交一律 status=pending;通过发奖励是人工审核后台动作,不在此。
+"""
+from __future__ import annotations
+
+import logging
+
+from fastapi import APIRouter, File, Form, HTTPException, UploadFile
+
+from app.api.deps import CurrentUser, DbSession
+from app.core import media
+from app.models.comparison import ComparisonRecord
+from app.repositories import report as report_repo
+from app.schemas.report import (
+    ReportRecordCounts,
+    ReportRecordOut,
+    ReportRecordsOut,
+    ReportSubmitOut,
+)
+
+logger = logging.getLogger("shagua.report")
+
+router = APIRouter(prefix="/api/v1/report", tags=["report"])
+
+_MAX_IMAGES = 4
+_VALID_STATUS = ("pending", "approved", "rejected")
+
+# 上报平台(canonical id → 展示名),与原型 fb-platform-chip data-pf 一致
+_PLATFORM_NAMES = {
+    "meituan-waimai": "美团外卖",
+    "jd-waimai": "京东外卖",
+    "taobao-shanguang": "淘宝闪购",
+}
+
+
+def _dish_summary(items: list | None) -> str | None:
+    """把比价记录 items[{name,qty,...}] 拼成菜品摘要文案。"""
+    if not items:
+        return None
+    names = [str(it.get("name", "")).strip() for it in items if isinstance(it, dict)]
+    names = [n for n in names if n]
+    return "、".join(names) if names else None
+
+
+@router.post("", response_model=ReportSubmitOut, summary="提交上报更低价")
+async def submit_report(
+    user: CurrentUser,
+    db: DbSession,
+    comparison_record_id: int = Form(...),
+    reported_platform_id: str = Form(...),
+    reported_price: str = Form(..., description="用户填的更低价(元)"),
+    images: list[UploadFile] = File(default=[]),
+) -> ReportSubmitOut:
+    # 平台
+    reported_platform_id = reported_platform_id.strip()
+    platform_name = _PLATFORM_NAMES.get(reported_platform_id)
+    if platform_name is None:
+        raise HTTPException(status_code=400, detail="不支持的上报平台")
+
+    # 价格(元 → 分)
+    try:
+        price_yuan = float(reported_price)
+    except (TypeError, ValueError):
+        raise HTTPException(status_code=400, detail="价格格式不正确") from None
+    if price_yuan <= 0:
+        raise HTTPException(status_code=400, detail="价格必须大于 0")
+    reported_price_cents = round(price_yuan * 100)
+
+    # 反查比价记录(必须属于本人)→ 取原最低价快照
+    rec = db.get(ComparisonRecord, comparison_record_id)
+    if rec is None or rec.user_id != user.id:
+        raise HTTPException(status_code=404, detail="比价记录不存在")
+    original_price_cents = rec.best_price_cents
+
+    # D:上报价必须低于原最低价
+    if original_price_cents is not None and reported_price_cents >= original_price_cents:
+        raise HTTPException(
+            status_code=400,
+            detail=f"上报价需低于原最低价 ¥{original_price_cents / 100:.2f}",
+        )
+
+    # 截图(至少 1 张,最多 4 张)
+    files = [f for f in (images or []) if f is not None and f.filename]
+    if not files:
+        raise HTTPException(status_code=400, detail="请至少上传一张截图证明")
+    if len(files) > _MAX_IMAGES:
+        raise HTTPException(status_code=400, detail=f"最多上传 {_MAX_IMAGES} 张图片")
+    urls: list[str] = []
+    for f in files:
+        data = await f.read()
+        try:
+            urls.append(media.save_report_image(user.id, data))
+        except media.MediaError as e:
+            raise HTTPException(status_code=400, detail=str(e)) from e
+
+    rep = report_repo.create_report(
+        db,
+        user_id=user.id,
+        comparison_record_id=comparison_record_id,
+        store_name=rec.store_name,
+        dish_summary=_dish_summary(rec.items),
+        original_platform_id=rec.best_platform_id,
+        original_platform_name=rec.best_platform_name,
+        original_price_cents=original_price_cents,
+        reported_platform_id=reported_platform_id,
+        reported_platform_name=platform_name,
+        reported_price_cents=reported_price_cents,
+        images=urls,
+    )
+    logger.info("price_report id=%d user_id=%d images=%d", rep.id, user.id, len(urls))
+    return ReportSubmitOut.model_validate(rep)
+
+
+@router.get("/records", response_model=ReportRecordsOut, summary="上报记录列表")
+def list_report_records(
+    user: CurrentUser,
+    db: DbSession,
+    status: str | None = None,
+) -> ReportRecordsOut:
+    status = (status or "").strip() or None
+    if status and status not in _VALID_STATUS:
+        raise HTTPException(status_code=400, detail="无效的状态筛选")
+    rows = report_repo.list_reports(db, user.id, status)
+    # counts 始终基于全量(不受 status 筛选影响),供前端 chip 计数
+    all_rows = rows if status is None else report_repo.list_reports(db, user.id, None)
+    counts = ReportRecordCounts(
+        all=len(all_rows),
+        pending=sum(1 for r in all_rows if r.status == "pending"),
+        approved=sum(1 for r in all_rows if r.status == "approved"),
+        rejected=sum(1 for r in all_rows if r.status == "rejected"),
+    )
+    return ReportRecordsOut(
+        records=[ReportRecordOut.model_validate(r) for r in rows],
+        counts=counts,
+    )

app/core/media.py

@@ -62,6 +62,11 @@ def save_feedback_image(user_id: int, data: bytes) -> str:
     return _save_image("feedback", user_id, data)
 
 
+def save_report_image(user_id: int, data: bytes) -> str:
+    """保存上报更低价截图,返回相对 URL(`/media/price_report/<file>`)。"""
+    return _save_image("price_report", user_id, data)
+
+
 def delete_avatar(url: str | None) -> None:
     """删除本服务托管的旧头像文件;外部 URL(如微信头像)或空值不处理。"""
     prefix = f"{settings.MEDIA_URL_PREFIX}/avatars/"

app/main.py

@@ -23,6 +23,7 @@ from app.api.v1.coupon import router as coupon_router
 from app.api.v1.feedback import router as feedback_router
 from app.api.v1.meituan import router as meituan_router
 from app.api.v1.order import router as order_router
+from app.api.v1.report import router as report_router
 from app.api.v1.savings import router as savings_router
 from app.api.v1.signin import router as signin_router
 from app.api.v1.tasks import router as tasks_router
@@ -86,6 +87,7 @@ app.include_router(tasks_router)
 app.include_router(savings_router)
 app.include_router(ad_router)
 app.include_router(order_router)
+app.include_router(report_router)
 
 # 用户上传文件(头像)静态服务。生产可改由 nginx 直接 serve MEDIA_ROOT。
 _media_root = Path(settings.MEDIA_ROOT)

app/models/__init__.py

@@ -5,6 +5,7 @@ from app.models.admin import AdminAuditLog, AdminUser  # noqa: F401
 from app.models.comparison import ComparisonRecord  # noqa: F401
 from app.models.comparison_milestone import ComparisonMilestoneClaim  # noqa: F401
 from app.models.feedback import Feedback  # noqa: F401
+from app.models.price_report import PriceReport  # noqa: F401
 from app.models.savings import SavingsRecord  # noqa: F401
 from app.models.signin import SigninRecord  # noqa: F401
 from app.models.task import UserTask  # noqa: F401

app/models/price_report.py

@@ -0,0 +1,67 @@
+"""上报更低价记录表(price_report)。
+
+用户在「比价记录」里选一条记录,上报「某平台有比我们算出的最低价更低的价格」,带截图证明,
+人工审核通过奖励金币。与 feedback(自由文本反馈)不同:本表结构化——关联具体比价记录、
+原最低价 vs 上报价、审核状态、奖励。
+
+- 原最低价快照(original_*)由后端按 comparison_record_id 反查比价记录的 best_* 冗余填入,
+  避免被关联记录后续删/改后对不上。
+- 价格统一存「分」(cents),与 comparison_record / savings_record 一致。
+- status: pending(审核中)/ approved(已通过)/ rejected(未通过),对齐前端筛选与状态徽标。
+- images: 截图相对 URL 列表(/media/price_report/...,复用 app.core.media)。
+- 奖励发放(通过 → 钱包 +reward_coins)是人工审核后台动作,提交时一律 pending,本表只留字段。
+"""
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import JSON, DateTime, ForeignKey, Integer, String, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base import Base
+
+
+class PriceReport(Base):
+    __tablename__ = "price_report"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(
+        Integer, ForeignKey("user.id"), index=True, nullable=False
+    )
+    # 选中的那条比价记录(可空:记录被删后仍保留上报历史)
+    comparison_record_id: Mapped[int | None] = mapped_column(
+        Integer, ForeignKey("comparison_record.id"), index=True, nullable=True
+    )
+
+    # ===== 选中比价记录的快照(后端反查 comparison_record 填入,冗余存) =====
+    store_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    dish_summary: Mapped[str | None] = mapped_column(String(256), nullable=True)
+    original_platform_id: Mapped[str | None] = mapped_column(String(32), nullable=True)
+    original_platform_name: Mapped[str | None] = mapped_column(String(32), nullable=True)
+    original_price_cents: Mapped[int | None] = mapped_column(Integer, nullable=True)
+
+    # ===== 用户上报的更低价 =====
+    reported_platform_id: Mapped[str] = mapped_column(String(32), nullable=False)
+    reported_platform_name: Mapped[str] = mapped_column(String(32), nullable=False)
+    reported_price_cents: Mapped[int] = mapped_column(Integer, nullable=False)
+    # 截图证明 URL 列表(相对路径,如 ["/media/price_report/u1_ab.jpg"])
+    images: Mapped[list[str]] = mapped_column(JSON, nullable=False, default=list)
+
+    # ===== 审核(人工后台) =====
+    status: Mapped[str] = mapped_column(
+        String(16), nullable=False, default="pending", index=True
+    )
+    reject_reason: Mapped[str | None] = mapped_column(String(256), nullable=True)
+    reward_coins: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    reviewed_at: Mapped[datetime | None] = mapped_column(
+        DateTime(timezone=True), nullable=True
+    )
+
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), index=True, nullable=False
+    )
+
+    def __repr__(self) -> str:  # pragma: no cover
+        return (
+            f"<PriceReport id={self.id} user_id={self.user_id} status={self.status}>"
+        )

app/repositories/report.py

@@ -0,0 +1,53 @@
+"""price_report 表读写。"""
+from __future__ import annotations
+
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from app.models.price_report import PriceReport
+
+
+def create_report(
+    db: Session,
+    *,
+    user_id: int,
+    comparison_record_id: int | None,
+    store_name: str | None,
+    dish_summary: str | None,
+    original_platform_id: str | None,
+    original_platform_name: str | None,
+    original_price_cents: int | None,
+    reported_platform_id: str,
+    reported_platform_name: str,
+    reported_price_cents: int,
+    images: list[str],
+) -> PriceReport:
+    rep = PriceReport(
+        user_id=user_id,
+        comparison_record_id=comparison_record_id,
+        store_name=store_name,
+        dish_summary=dish_summary,
+        original_platform_id=original_platform_id,
+        original_platform_name=original_platform_name,
+        original_price_cents=original_price_cents,
+        reported_platform_id=reported_platform_id,
+        reported_platform_name=reported_platform_name,
+        reported_price_cents=reported_price_cents,
+        images=images,
+        status="pending",
+    )
+    db.add(rep)
+    db.commit()
+    db.refresh(rep)
+    return rep
+
+
+def list_reports(
+    db: Session, user_id: int, status: str | None = None
+) -> list[PriceReport]:
+    """该用户的上报记录,按时间倒序;status 非空时按状态筛选。"""
+    stmt = select(PriceReport).where(PriceReport.user_id == user_id)
+    if status:
+        stmt = stmt.where(PriceReport.status == status)
+    stmt = stmt.order_by(PriceReport.created_at.desc(), PriceReport.id.desc())
+    return list(db.execute(stmt).scalars().all())

app/schemas/report.py

@@ -0,0 +1,57 @@
+"""上报更低价 响应 schema。
+
+请求是 multipart 表单(comparison_record_id / reported_platform_id / reported_price / images),
+在路由里直接校验,不单独建请求 schema(同 feedback)。价格对外统一「分」(cents)。
+"""
+from __future__ import annotations
+
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class ReportSubmitOut(BaseModel):
+    """提交上报后的回执。"""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int
+    status: str
+    created_at: datetime
+
+
+class ReportRecordOut(BaseModel):
+    """一条上报记录(「上报记录」列表用)。价格单位:分。"""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int
+    store_name: str | None = None
+    dish_summary: str | None = None
+    # 原最低价(上报前系统给出的最低,反查比价记录 best_*)
+    original_platform_id: str | None = None
+    original_platform_name: str | None = None
+    original_price_cents: int | None = None
+    # 用户上报的更低价
+    reported_platform_id: str
+    reported_platform_name: str
+    reported_price_cents: int
+    images: list[str] = Field(default_factory=list)
+    status: str  # pending / approved / rejected
+    reject_reason: str | None = None
+    reward_coins: int | None = None
+    created_at: datetime
+
+
+class ReportRecordCounts(BaseModel):
+    """四态计数,供前端筛选 chip 显示(全部/审核中/已通过/未通过)。"""
+
+    all: int = 0
+    pending: int = 0
+    approved: int = 0
+    rejected: int = 0
+
+
+class ReportRecordsOut(BaseModel):
+    records: list[ReportRecordOut]
+    counts: ReportRecordCounts