"""按样本缴费方案 / 转账笔财务确认 API（payment_model_version=2）"""

from __future__ import annotations

from typing import Any, Dict, List, Optional

from fastapi import APIRouter, Depends, Query
from pydantic import BaseModel, ConfigDict, Field
from sqlalchemy.orm import Session

from app.core.database import get_db
from app.core.menu_guard import require_admin_or_super_admin
from app.core.response import error_response, success_response
from app.crud import protocol_sample_payment as psp_svc
from app.models.models import BizCollectionProtocol, SysUser

router = APIRouter(prefix="/web/admin", tags=["细胞存储-按样本缴费"])


def _get_tenant_no(db: Session, user: dict) -> str:
    user_id = user.get("user_id")
    if not user_id:
        raise PermissionError("用户身份信息缺失，无法确定租户")
    sys_user = db.query(SysUser).filter(SysUser.id == user_id).first()
    if not sys_user or not sys_user.tenant_no:
        raise PermissionError("用户租户信息缺失")
    return sys_user.tenant_no


def _get_current_user_id(user: dict) -> str:
    user_id = user.get("user_id")
    if not user_id:
        raise PermissionError("用户身份信息缺失")
    return str(user_id)


def _protocol_accessible(db: Session, protocol_id: str, tenant_no: str, user: dict) -> bool:
    from app.core.data_scope import apply_data_scope

    q = db.query(BizCollectionProtocol).filter(
        BizCollectionProtocol.id == protocol_id,
        BizCollectionProtocol.del_flag == 0,
        BizCollectionProtocol.tenant_no == tenant_no,
    )
    q = apply_data_scope(q, BizCollectionProtocol, user, db, tenant_no)
    return q.first() is not None


class ScheduleBody(BaseModel):
    model_config = ConfigDict(extra="ignore", populate_by_name=True)

    id: Optional[str] = None
    schedule_no: Optional[int] = Field(None, alias="scheduleNo")
    due_amount: Optional[float] = Field(None, alias="dueAmount")
    due_date: Optional[str] = Field(None, alias="dueDate")
    schedule_status: Optional[str] = Field(None, alias="scheduleStatus")
    remark: Optional[str] = None
    transfers: Optional[List[Dict[str, Any]]] = None


class SamplePaymentBody(BaseModel):
    model_config = ConfigDict(extra="ignore", populate_by_name=True)

    id: Optional[str] = None
    sample_code: str = Field(..., alias="sampleCode")
    protocol_sample_id: Optional[str] = Field(None, alias="protocolSampleId")
    pay_mode: str = Field(..., alias="payMode")
    contract_amount: Optional[float] = Field(None, alias="contractAmount")
    installment_count: Optional[int] = Field(None, alias="installmentCount")
    installment_interval_months: Optional[float] = Field(
        None, alias="installmentIntervalMonths"
    )
    installment_start_date: Optional[str] = Field(None, alias="installmentStartDate")
    installment_advance_days: Optional[int] = Field(None, alias="installmentAdvanceDays")
    installment_ratios: Optional[Any] = Field(None, alias="installmentRatios")
    lump_sum_deadline: Optional[str] = Field(None, alias="lumpSumDeadline")
    remark: Optional[str] = None
    schedules: Optional[List[ScheduleBody]] = None


class SamplePaymentsPutBody(BaseModel):
    model_config = ConfigDict(extra="ignore", populate_by_name=True)

    sample_payments: List[SamplePaymentBody] = Field(
        default_factory=list, alias="samplePayments"
    )


class TransferCreateBody(BaseModel):
    model_config = ConfigDict(extra="ignore", populate_by_name=True)

    schedule_id: str = Field(..., alias="scheduleId")
    transfer_amount: Optional[float] = Field(None, alias="transferAmount")
    transfer_time: Optional[str] = Field(None, alias="transferTime")
    transfer_type: Optional[str] = Field(None, alias="transferType")
    transfer_attachments: Optional[str] = Field(None, alias="transferAttachments")
    remark: Optional[str] = None


class TransferDraftBody(BaseModel):
    model_config = ConfigDict(extra="ignore", populate_by_name=True)

    transfer_amount: Optional[float] = Field(None, alias="transferAmount")
    transfer_time: Optional[str] = Field(None, alias="transferTime")
    transfer_type: Optional[str] = Field(None, alias="transferType")
    transfer_attachments: Optional[str] = Field(None, alias="transferAttachments")
    remark: Optional[str] = None


class FinanceConfirmBody(BaseModel):
    model_config = ConfigDict(extra="ignore", populate_by_name=True)

    finance_confirm_attachments: Optional[str] = Field(
        None, alias="financeConfirmAttachments"
    )
    finance_remark: Optional[str] = Field(None, alias="financeRemark")


def _ratios_to_str(ratios: Any) -> Optional[str]:
    if ratios is None:
        return None
    if isinstance(ratios, str):
        return ratios.strip() or None
    import json

    try:
        return json.dumps(ratios, ensure_ascii=False)
    except Exception:
        return str(ratios)


def _save_sample_payments(
    db: Session,
    *,
    protocol_id: str,
    tenant_no: str,
    user_id: str,
    payments: List[SamplePaymentBody],
) -> List[Dict[str, Any]]:
    for item in payments:
        prev = psp_svc.find_active_sample_payment(
            db,
            tenant_no=tenant_no,
            sample_payment_id=item.id,
            collection_protocol_id=protocol_id,
            sample_code=item.sample_code,
        )
        prev_mode = (prev.pay_mode or "").strip() if prev else ""
        sp = psp_svc.upsert_sample_payment(
            db,
            collection_protocol_id=protocol_id,
            tenant_no=tenant_no,
            user_id=user_id,
            sample_code=item.sample_code,
            pay_mode=item.pay_mode,
            contract_amount=item.contract_amount,
            protocol_sample_id=item.protocol_sample_id,
            installment_count=item.installment_count,
            installment_interval_months=item.installment_interval_months,
            installment_start_date=item.installment_start_date,
            installment_advance_days=item.installment_advance_days,
            installment_ratios=_ratios_to_str(item.installment_ratios),
            lump_sum_deadline=item.lump_sum_deadline,
            remark=item.remark,
            sample_payment_id=item.id,
        )
        next_mode = (item.pay_mode or "").strip()
        if (
            prev_mode == "fq"
            and next_mode in ("fgd", "dj")
            and psp_svc.sample_payment_has_yjf(
                db, sample_payment_id=sp.id, tenant_no=tenant_no
            )
        ):
            psp_svc.apply_fq_to_fgd_merge(
                db,
                sample_payment_id=sp.id,
                tenant_no=tenant_no,
                user_id=user_id,
                target_pay_mode=next_mode,
            )
            continue
        if item.schedules is not None:
            schedule_payloads = [s.model_dump(by_alias=False) for s in item.schedules]
            psp_svc.sync_schedules_and_transfers(
                db,
                sample_payment_id=sp.id,
                tenant_no=tenant_no,
                user_id=user_id,
                schedules=schedule_payloads,
            )
    db.commit()
    return psp_svc.get_sample_payments_bundle(db, protocol_id, tenant_no)


@router.get("/payment-chase")
async def list_payment_chase(
    page: int = Query(1, ge=1),
    page_size: int = Query(10, ge=1, le=100, alias="pageSize"),
    keyword: Optional[str] = None,
    chaseType: Optional[str] = Query(None, alias="chaseType"),
    payMode: Optional[str] = Query(None, alias="payMode"),
    salesUserId: Optional[str] = Query(None, alias="salesUserId"),
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    """催缴信息：逾期未清 ∪ 未来 30 天内应缴未清（一行一期）。"""
    try:
        tenant_no = _get_tenant_no(db, user)
        items, total = psp_svc.list_payment_chase_page(
            db,
            tenant_no=tenant_no,
            keyword=keyword,
            chase_type=chaseType,
            pay_mode=payMode,
            sales_user_id=salesUserId,
            page=page,
            page_size=page_size,
            user_info=user,
        )
        return success_response({"list": items, "total": total, "page": page, "pageSize": page_size})
    except Exception as e:
        return error_response(500, str(e))


@router.get("/sample-payments")
async def list_sample_payments(
    page: int = Query(1, ge=1),
    page_size: int = Query(10, ge=1, le=100, alias="pageSize"),
    keyword: Optional[str] = None,
    payMode: Optional[str] = Query(None, alias="payMode"),
    progressStatus: Optional[str] = Query(None, alias="progressStatus"),
    installmentDueDateStart: Optional[str] = Query(None, alias="installmentDueDateStart"),
    installmentDueDateEnd: Optional[str] = Query(None, alias="installmentDueDateEnd"),
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    """按样本缴费方案分页列表（独立缴费信息菜单）。"""
    try:
        tenant_no = _get_tenant_no(db, user)
        items, total = psp_svc.list_sample_payments_page(
            db,
            tenant_no=tenant_no,
            keyword=keyword,
            pay_mode=payMode,
            progress_status=progressStatus,
            due_date_start=installmentDueDateStart,
            due_date_end=installmentDueDateEnd,
            page=page,
            page_size=page_size,
            user_info=user,
        )
        return success_response(
            {"list": items, "total": total, "page": page, "pageSize": page_size}
        )
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.get("/sample-payments/{sample_payment_id}")
async def get_sample_payment(
    sample_payment_id: str,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        data = psp_svc.get_sample_payment_detail(
            db,
            sample_payment_id=sample_payment_id,
            tenant_no=tenant_no,
            user_info=user,
        )
        if not data:
            return error_response(403, "无权查看或记录不存在")
        return success_response(data)
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.get("/collection-protocols/{protocol_id}/sample-payments")
async def get_sample_payments(
    protocol_id: str,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        if not _protocol_accessible(db, protocol_id, tenant_no, user):
            return error_response(404, "协议单不存在或无权查看")
        data = psp_svc.get_sample_payments_bundle(db, protocol_id, tenant_no)
        return success_response(data)
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.put("/collection-protocols/{protocol_id}/sample-payments")
async def put_sample_payments(
    protocol_id: str,
    body: SamplePaymentsPutBody,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        if not _protocol_accessible(db, protocol_id, tenant_no, user):
            return error_response(404, "协议单不存在或无权操作")
        # pydantic v2: may need model_validate with populate
        payments = body.sample_payments
        if hasattr(body, "model_dump"):
            raw = body.model_dump(by_alias=True)
            payments = [
                SamplePaymentBody.model_validate(x)
                for x in (raw.get("samplePayments") or raw.get("sample_payments") or [])
            ]
        data = _save_sample_payments(
            db,
            protocol_id=protocol_id,
            tenant_no=tenant_no,
            user_id=user_id,
            payments=payments or body.sample_payments,
        )
        return success_response(data, message="保存成功")
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.post("/payment-transfers")
async def create_payment_transfer(
    body: TransferCreateBody,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        sch = psp_svc._get_schedule_or_raise(
            db, schedule_id=body.schedule_id, tenant_no=tenant_no
        )
        if not _protocol_accessible(db, sch.collection_protocol_id, tenant_no, user):
            return error_response(403, "无权操作该协议")
        obj = psp_svc.add_transfer(
            db,
            schedule_id=body.schedule_id,
            tenant_no=tenant_no,
            user_id=user_id,
            transfer_amount=body.transfer_amount,
            transfer_time=body.transfer_time,
            transfer_type=body.transfer_type,
            transfer_attachments=body.transfer_attachments,
            remark=body.remark,
        )
        from app.crud.protocol_sample_payment import _transfer_to_dict

        return success_response(
            _transfer_to_dict(db, obj, tenant_no), message="创建成功"
        )
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.put("/payment-transfers/{transfer_id}")
async def update_payment_transfer(
    transfer_id: str,
    body: TransferDraftBody,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        fields = body.model_dump(by_alias=False, exclude_unset=True)
        locked_transfer = psp_svc._get_transfer_with_schedule_lock(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_info=user,
        )
        obj = psp_svc.update_transfer_draft(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_id=user_id,
            fields=fields,
            locked_transfer=locked_transfer,
        )
        from app.crud.protocol_sample_payment import _transfer_to_dict

        return success_response(_transfer_to_dict(db, obj, tenant_no), message="保存成功")
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.post("/payment-transfers/{transfer_id}/submit-receipt-finance")
async def submit_payment_transfer_finance(
    transfer_id: str,
    body: Optional[TransferDraftBody] = None,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        draft = body.model_dump(by_alias=True, exclude_unset=True) if body else None
        locked_transfer = psp_svc._get_transfer_with_schedule_lock(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_info=user,
        )
        obj = psp_svc.submit_receipt_finance(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_id=user_id,
            draft_fields=draft,
            locked_transfer=locked_transfer,
        )
        from app.crud.protocol_sample_payment import _transfer_to_dict

        return success_response(_transfer_to_dict(db, obj, tenant_no), message="已提交财务确认")
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.post("/payment-transfers/{transfer_id}/withdraw")
async def withdraw_payment_transfer(
    transfer_id: str,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        locked_transfer = psp_svc._get_transfer_with_schedule_lock(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_info=user,
        )
        obj = psp_svc.withdraw_receipt(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_id=user_id,
            locked_transfer=locked_transfer,
        )
        from app.crud.protocol_sample_payment import _transfer_to_dict

        return success_response(_transfer_to_dict(db, obj, tenant_no), message="已撤回")
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.delete("/payment-transfers/{transfer_id}")
async def delete_payment_transfer(
    transfer_id: str,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        obj = psp_svc._get_transfer_or_raise(
            db, transfer_id=transfer_id, tenant_no=tenant_no
        )
        if not _protocol_accessible(db, obj.collection_protocol_id, tenant_no, user):
            return error_response(403, "无权操作该协议")
        psp_svc.soft_delete_payment_transfer(
            db, transfer_id=transfer_id, tenant_no=tenant_no, user_id=user_id
        )
        return success_response(None, message="删除成功")
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.get("/payment-transfers")
async def list_payment_transfers(
    page: int = Query(1, ge=1),
    page_size: int = Query(10, ge=1, le=100, alias="pageSize"),
    payStatus: str = Query("dfj", alias="payStatus"),
    keyword: Optional[str] = None,
    installmentDueDateStart: Optional[str] = Query(None, alias="installmentDueDateStart"),
    installmentDueDateEnd: Optional[str] = Query(None, alias="installmentDueDateEnd"),
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    """按转账笔状态分页（缴费信息看板 / 财务共用）。"""
    try:
        tenant_no = _get_tenant_no(db, user)
        items, total = psp_svc.list_transfers_for_finance(
            db,
            pay_status=payStatus,
            tenant_no=tenant_no,
            keyword=keyword,
            page=page,
            page_size=page_size,
            user_info=user,
            due_date_start=installmentDueDateStart,
            due_date_end=installmentDueDateEnd,
        )
        return success_response(
            {"list": items, "total": total, "page": page, "pageSize": page_size}
        )
    except PermissionError as e:
        return error_response(403, str(e))


@router.get("/payment-transfers/receipt-confirm")
async def list_receipt_confirm(
    page: int = Query(1, ge=1),
    page_size: int = Query(10, ge=1, le=100, alias="pageSize"),
    keyword: Optional[str] = None,
    installmentDueDateStart: Optional[str] = Query(None, alias="installmentDueDateStart"),
    installmentDueDateEnd: Optional[str] = Query(None, alias="installmentDueDateEnd"),
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        items, total = psp_svc.list_transfers_for_finance(
            db,
            pay_status="jfqrz",
            tenant_no=tenant_no,
            keyword=keyword,
            page=page,
            page_size=page_size,
            user_info=user,
            due_date_start=installmentDueDateStart,
            due_date_end=installmentDueDateEnd,
        )
        return success_response({"list": items, "total": total, "page": page, "pageSize": page_size})
    except PermissionError as e:
        return error_response(403, str(e))


@router.get("/payment-transfers/receipt-confirmed")
async def list_receipt_confirmed(
    page: int = Query(1, ge=1),
    page_size: int = Query(10, ge=1, le=100, alias="pageSize"),
    keyword: Optional[str] = None,
    installmentDueDateStart: Optional[str] = Query(None, alias="installmentDueDateStart"),
    installmentDueDateEnd: Optional[str] = Query(None, alias="installmentDueDateEnd"),
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        items, total = psp_svc.list_transfers_for_finance(
            db,
            pay_status="yjf",
            tenant_no=tenant_no,
            keyword=keyword,
            page=page,
            page_size=page_size,
            user_info=user,
            due_date_start=installmentDueDateStart,
            due_date_end=installmentDueDateEnd,
        )
        return success_response({"list": items, "total": total, "page": page, "pageSize": page_size})
    except PermissionError as e:
        return error_response(403, str(e))


@router.post("/payment-transfers/{transfer_id}/receipt-confirm")
async def confirm_payment_transfer(
    transfer_id: str,
    body: Optional[FinanceConfirmBody] = None,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        locked_transfer = psp_svc._get_transfer_with_schedule_lock(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_info=user,
        )
        obj = psp_svc.confirm_receipt(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_id=user_id,
            finance_confirm_attachments=body.finance_confirm_attachments if body else None,
            finance_remark=body.finance_remark if body else None,
            locked_transfer=locked_transfer,
        )
        from app.crud.protocol_sample_payment import _transfer_to_dict

        return success_response(_transfer_to_dict(db, obj, tenant_no), message="确认收款成功")
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))


@router.post("/payment-transfers/{transfer_id}/receipt-reject")
async def reject_payment_transfer(
    transfer_id: str,
    user: dict = Depends(require_admin_or_super_admin),
    db: Session = Depends(get_db),
):
    try:
        tenant_no = _get_tenant_no(db, user)
        user_id = _get_current_user_id(user)
        locked_transfer = psp_svc._get_transfer_with_schedule_lock(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_info=user,
        )
        obj = psp_svc.reject_receipt(
            db,
            transfer_id=transfer_id,
            tenant_no=tenant_no,
            user_id=user_id,
            locked_transfer=locked_transfer,
        )
        from app.crud.protocol_sample_payment import _transfer_to_dict

        return success_response(_transfer_to_dict(db, obj, tenant_no), message="已退回")
    except PermissionError as e:
        return error_response(403, str(e))
    except ValueError as e:
        return error_response(400, str(e))