"""评查服务实现。

编排 LeAudit 引擎执行链路：
  文档 → OCR → Extract → Evaluate → Rescue → Persist
"""

from datetime import datetime

from fastapi_admin.config import APP_REGION
from fastapi_common.fastapi_common_logger import logger
from fastapi_common.fastapi_common_sqlalchemy.database import GetAsyncSession
from fastapi_common.fastapi_common_web.domain.responses import StatusCodeEnum
from fastapi_common.fastapi_common_web.exception.LeauditException import LeauditException
from sqlalchemy import select, text

from fastapi_modules.fastapi_leaudit.domian.vo.auditVo import AuditRunVO, AuditResultVO
from fastapi_modules.fastapi_leaudit.leaudit_bridge.fileSourceResolver import FileSourceResolver
from fastapi_modules.fastapi_leaudit.leaudit_bridge.tasks import dispatch_leaudit_task
from fastapi_modules.fastapi_leaudit.models import (
    LeauditAuditRun,
    LeauditDocument,
    LeauditDocumentFile,
)
from fastapi_modules.fastapi_leaudit.services import IAuditService


class AuditServiceImpl(IAuditService):
    """评查服务实现。"""

    async def Run(self, DocumentId: int, RuleType: str | None = None, Force: bool = False) -> AuditRunVO:
        """触发文档评查。

        当前阶段同步触发 bridge 执行链，后续再切换为 Celery 异步分发。
        """
        async with GetAsyncSession() as session:
            logger.info(f"触发评查: documentId={DocumentId}, ruleType={RuleType}")
            document = await session.get(LeauditDocument, DocumentId)
            if not document:
                raise LeauditException(StatusCodeEnum.HTTP_404_NOT_FOUND, "评查文档不存在")

            fileResult = await session.execute(
                select(LeauditDocumentFile)
                .where(
                    LeauditDocumentFile.documentId == DocumentId,
                    LeauditDocumentFile.isActive.is_(True),
                )
                .order_by(LeauditDocumentFile.Id.desc())
                .limit(1)
            )
            documentFile = fileResult.scalar_one_or_none()
            if not documentFile:
                raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前文档没有可执行文件版本")

            runNoResult = await session.execute(
                select(LeauditAuditRun.runNo)
                .where(LeauditAuditRun.documentId == DocumentId)
                .order_by(LeauditAuditRun.runNo.desc())
                .limit(1)
            )
            latestRunNo = runNoResult.scalar_one_or_none() or 0

            bindingResult = await session.execute(
                text(
                    """
                    SELECT
                        rs.id AS rule_set_id,
                        rs.current_version_id AS rule_version_id,
                        rv.oss_url AS rule_source_oss_url,
                        rv.file_sha256 AS rule_source_sha256,
                        rv.metadata_type_id AS rule_type_id
                    FROM leaudit_rule_type_bindings b
                    JOIN leaudit_rule_sets rs ON rs.id = b.rule_set_id
                    LEFT JOIN leaudit_rule_versions rv ON rv.id = rs.current_version_id
                    WHERE b.doc_type_id = :doc_type_id
                      AND b.is_active = true
                      AND b.region = :region
                    ORDER BY b.priority DESC, b.id DESC
                    LIMIT 1
                    """
                ),
                {"doc_type_id": document.typeId, "region": APP_REGION},
            )
            binding = bindingResult.mappings().first()
            if not binding or not binding["rule_set_id"] or not binding["rule_version_id"]:
                raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前文档类型未绑定可用规则版本")

            run = LeauditAuditRun(
                documentId=DocumentId,
                documentFileId=documentFile.Id,
                runNo=int(latestRunNo) + 1,
                triggerSource="manual" if not Force else "retry",
                status="pending",
                ruleSetId=int(binding["rule_set_id"]),
                ruleVersionId=int(binding["rule_version_id"]),
                ruleTypeId=binding["rule_type_id"],
                ruleSourceOssUrl=binding["rule_source_oss_url"],
                ruleSourceSha256=binding["rule_source_sha256"],
                startedAt=datetime.now(),
            )
            session.add(run)
            await session.flush()

            document.currentRunId = run.Id
            document.processingStatus = "running"
            await session.commit()
            await session.refresh(run)

            try:
                Resolver = FileSourceResolver()
                Payload = await Resolver.ResolvePayload(documentFile)
            except Exception as Error:
                raise LeauditException(
                    StatusCodeEnum.HTTP_500_INTERNAL_SERVER_ERROR,
                    f"读取评查文件失败: {Error}",
                ) from Error

            dispatch_leaudit_task(
                document_id=DocumentId,
                file_content=Payload.fileContent,
                filename=Payload.fileName,
                upload_info={
                    "run_id": run.Id,
                    "rule_version_id": run.ruleVersionId,
                    "rule_source_oss_url": run.ruleSourceOssUrl,
                    "source_type": Payload.sourceType,
                    "source_path": Payload.sourcePath,
                },
                rules_path=RuleType,
            )

            await session.refresh(run)
            return AuditRunVO(
                runId=run.Id,
                documentId=run.documentId,
                runNo=run.runNo,
                status=run.status,
                phase=run.phase,
                totalScore=float(run.totalScore) if run.totalScore else None,
                passedCount=run.passedCount,
                failedCount=run.failedCount,
                startedAt=run.startedAt,
                finishedAt=run.finishedAt,
            )

    async def GetRunStatus(self, RunId: int) -> AuditRunVO:
        """查询评查运行状态。"""
        async with GetAsyncSession() as session:
            run = await session.get(LeauditAuditRun, RunId)
            if not run:
                raise LeauditException(StatusCodeEnum.HTTP_404_NOT_FOUND, "评查运行记录不存在")
            return AuditRunVO(
                runId=run.Id,
                documentId=run.documentId,
                runNo=run.runNo,
                status=run.status,
                phase=run.phase,
                totalScore=float(run.totalScore) if run.totalScore else None,
                passedCount=run.passedCount,
                failedCount=run.failedCount,
                startedAt=run.startedAt,
                finishedAt=run.finishedAt,
            )

    async def GetResult(self, RunId: int) -> AuditResultVO:
        """获取评查结果。"""
        async with GetAsyncSession() as session:
            run = await session.get(LeauditAuditRun, RunId)
            if not run:
                raise LeauditException(StatusCodeEnum.HTTP_404_NOT_FOUND, "评查运行记录不存在")
            result = await session.execute(
                text(
                    """
                    SELECT
                        rule_id,
                        rule_name,
                        risk,
                        score,
                        passed,
                        status,
                        skip_reason,
                        confidence,
                        pass_message,
                        fail_message,
                        remediation,
                        extracted_fields,
                        field_positions,
                        rescue_applied,
                        rescue_passed
                    FROM leaudit_rule_results
                    WHERE run_id = :run_id
                    ORDER BY id ASC
                    """
                ),
                {"run_id": RunId},
            )
            rules = [dict(row) for row in result.mappings().all()]
            return AuditResultVO(
                runId=run.Id,
                totalScore=float(run.totalScore) if run.totalScore else None,
                passedCount=run.passedCount or 0,
                failedCount=run.failedCount or 0,
                skippedCount=run.skippedCount or 0,
                phase=run.phase,
                rescueApplied=run.rescueApplied or False,
                rules=rules,
            )