"""R15 适配器：员工内部舞弊与资源滥用。

源明细：SrcEmployeeOperation / SrcInternalMsisdn / SrcPointsTransaction
映射到：Entity(EMPLOYEE, MSISDN) + 关系(OPERATES) + MetricEvent
"""

from __future__ import annotations

import uuid

from sqlalchemy.orm import Session

from app.datahub.graph_repo import add_relationship, upsert_entity
from app.datahub.models import MetricEvent
from app.datahub.ontology import EntityType, RelationshipType
from app.datahub.staging import (
    SrcEmployeeOperation,
    SrcInternalMsisdn,
    SrcPointsTransaction,
)
from app.ingest.base import BaseAdapter, IngestResult
from app.ingest.registry import register_adapter


@register_adapter
class EmployeeOperationAdapter(BaseAdapter):
    """SrcEmployeeOperation → Entity(EMPLOYEE) + 关系(OPERATES) + MetricEvent。"""

    source_system = "BSS"
    staging_table = "src_employee_operation"

    def ingest(
        self,
        session: Session,
        data_version_id: uuid.UUID | None = None,
        batch_size: int = 1000,
    ) -> IngestResult:
        result = IngestResult()
        query = session.query(SrcEmployeeOperation)
        if data_version_id:
            query = query.filter(SrcEmployeeOperation.data_version_id == data_version_id)
        rows = query.limit(batch_size).all()

        for row in rows:
            try:
                # 员工实体
                emp_entity = upsert_entity(
                    session,
                    entity_type=EntityType.EMPLOYEE,
                    business_key=row.employee_key,
                    display_name=row.employee_name,
                    attributes={
                        "position": row.position,
                        "department": row.department,
                        "role_permissions": row.role_permissions,
                    },
                    data_version_id=data_version_id,
                )
                result.entities.append(emp_entity)

                # 操作目标 → OPERATES 关系（如操作对象是号码或账户）
                if row.operation_target:
                    # 尝试识别操作目标类型（简单启发式：以1开头长度11为号码，否则为账户）
                    target_key = row.operation_target.strip()
                    if target_key.isdigit() and len(target_key) == 11:
                        target_entity = upsert_entity(
                            session,
                            entity_type=EntityType.MSISDN,
                            business_key=target_key,
                            data_version_id=data_version_id,
                        )
                        rel = add_relationship(
                            session, RelationshipType.OPERATES, emp_entity, target_entity,
                            attributes={"operation_type": row.operation_type},
                            data_version_id=data_version_id,
                        )
                        result.relationships.append(rel)

                # 操作日志事件
                if row.operation_time:
                    event = MetricEvent(
                        event_time=row.operation_time,
                        subject_type="employee",
                        subject_key=row.employee_key,
                        metric_name="operation_log",
                        metric_value=1.0,
                        attributes={
                            "operation_type": row.operation_type,
                            "operation_target": row.operation_target,
                            "position": row.position,
                            "department": row.department,
                        },
                        data_version_id=data_version_id,
                    )
                    session.add(event)
                    result.metric_events.append(event)

                result.row_count += 1
            except Exception:
                result.error_count += 1

        return result


@register_adapter
class InternalMsisdnAdapter(BaseAdapter):
    """SrcInternalMsisdn → Entity(MSISDN, EMPLOYEE) + 关系(OPERATES) + MetricEvent。"""

    source_system = "BSS"
    staging_table = "src_internal_msisdn"

    def ingest(
        self,
        session: Session,
        data_version_id: uuid.UUID | None = None,
        batch_size: int = 1000,
    ) -> IngestResult:
        result = IngestResult()
        query = session.query(SrcInternalMsisdn)
        if data_version_id:
            query = query.filter(SrcInternalMsisdn.data_version_id == data_version_id)
        rows = query.limit(batch_size).all()

        for row in rows:
            try:
                # 内部号码实体
                msisdn_entity = upsert_entity(
                    session,
                    entity_type=EntityType.MSISDN,
                    business_key=row.msisdn,
                    display_name=row.msisdn,
                    attributes={"purpose": row.purpose, "internal": True},
                    data_version_id=data_version_id,
                )
                result.entities.append(msisdn_entity)

                # 分配员工 → OPERATES 关系
                if row.assigned_employee:
                    emp_entity = upsert_entity(
                        session,
                        entity_type=EntityType.EMPLOYEE,
                        business_key=row.assigned_employee,
                        data_version_id=data_version_id,
                    )
                    rel = add_relationship(
                        session, RelationshipType.OPERATES, emp_entity, msisdn_entity,
                        attributes={"purpose": row.purpose},
                        data_version_id=data_version_id,
                    )
                    result.relationships.append(rel)

                # 内部号用量事件
                import datetime as dt

                try:
                    event_time = dt.datetime.strptime(
                        row.report_month, "%Y-%m"
                    ).replace(tzinfo=dt.timezone.utc) if row.report_month else dt.datetime.now(dt.timezone.utc)
                except ValueError:
                    event_time = dt.datetime.now(dt.timezone.utc)

                event = MetricEvent(
                    event_time=event_time,
                    subject_type="msisdn",
                    subject_key=row.msisdn,
                    metric_name="internal_usage",
                    metric_value=row.traffic_mb,
                    attributes={
                        "voice_min": row.voice_min,
                        "revenue_attributed": row.revenue_attributed,
                        "assigned_employee": row.assigned_employee,
                        "purpose": row.purpose,
                    },
                    data_version_id=data_version_id,
                )
                session.add(event)
                result.metric_events.append(event)
                result.row_count += 1
            except Exception:
                result.error_count += 1

        return result


@register_adapter
class PointsTransactionAdapter(BaseAdapter):
    """SrcPointsTransaction → MetricEvent（积分发放/兑换时序）。"""

    source_system = "BSS"
    staging_table = "src_points_transaction"

    def ingest(
        self,
        session: Session,
        data_version_id: uuid.UUID | None = None,
        batch_size: int = 1000,
    ) -> IngestResult:
        result = IngestResult()
        query = session.query(SrcPointsTransaction)
        if data_version_id:
            query = query.filter(SrcPointsTransaction.data_version_id == data_version_id)
        rows = query.limit(batch_size).all()

        for row in rows:
            try:
                # 确保操作人实体存在
                upsert_entity(
                    session,
                    entity_type=EntityType.EMPLOYEE,
                    business_key=row.operator_key,
                    data_version_id=data_version_id,
                )

                # 积分事件
                if row.transaction_time:
                    event = MetricEvent(
                        event_time=row.transaction_time,
                        subject_type="employee",
                        subject_key=row.operator_key,
                        metric_name="points_transaction",
                        metric_value=row.points_amount,
                        attributes={
                            "transaction_no": row.transaction_no,
                            "target_account": row.target_account,
                            "transaction_type": row.transaction_type,
                            "cash_value": row.cash_value,
                        },
                        data_version_id=data_version_id,
                    )
                    session.add(event)
                    result.metric_events.append(event)

                result.row_count += 1
            except Exception:
                result.error_count += 1

        return result