#!/usr/bin/env python3
"""只读侦查（生产读，本单 dama-entity-isolation-sweep-20260923 §一/§二 前置）

只 SELECT，无任何写。用于：
  1. system_configs / role_permissions 全量键实况（含 kpi_alert_higher_better / budget_mode /
     budget_driver_mode / current_tenant / cash.current_balance.* / alignment_config.*）
  2. operation_logs 实况（action 分布、switch_entity / switch_tenant_state 行数、最近行）
  3. entities 实况（账套清单）
  4. kpi_definitions 列面（是否有自身方向字段）+ 逐账套 KPI 分布
用法: python3 <this> [--json out.json]
"""
import json
import os
import sys
from pathlib import Path

BACKEND = Path("/srv/hermes/shared/cma-management/backend")
os.chdir(BACKEND)
sys.path.insert(0, str(BACKEND))

from sqlalchemy import text  # noqa: E402
from app.database import get_engine  # noqa: E402

out = {}
eng = get_engine()
with eng.connect() as c:
    out["db"] = c.execute(text("SELECT DATABASE()")).scalar()
    out["system_configs"] = [
        {"id": r[0], "config_key": r[1], "config_value": r[2], "description": r[3],
         "updated_at": str(r[4])}
        for r in c.execute(text(
            "SELECT id, config_key, config_value, description, updated_at "
            "FROM system_configs ORDER BY config_key"))
    ]
    out["role_permissions"] = [
        {"id": r[0], "key": r[1], "value": r[2], "updated_at": str(r[3])}
        for r in c.execute(text("SELECT id, `key`, `value`, updated_at FROM role_permissions ORDER BY `key`"))
    ]
    out["entities"] = [
        {"id": r[0], "name": r[1], "short_name": r[2], "status": r[3]}
        for r in c.execute(text("SELECT id, name, short_name, status FROM entities ORDER BY id"))
    ]
    out["op_logs_actions"] = [
        {"action": r[0], "n": r[1], "last": str(r[2])}
        for r in c.execute(text(
            "SELECT action, COUNT(*) n, MAX(created_at) last FROM operation_logs "
            "GROUP BY action ORDER BY n DESC"))
    ]
    out["op_logs_switch_rows"] = [
        {"id": r[0], "user_id": r[1], "action": r[2], "target_type": r[3], "target_id": r[4],
         "detail": (r[5] or "")[:300], "created_at": str(r[6])}
        for r in c.execute(text(
            "SELECT id, user_id, action, target_type, target_id, detail, created_at "
            "FROM operation_logs WHERE action LIKE '%switch%' OR action LIKE '%tenant%' "
            "ORDER BY id DESC LIMIT 10"))
    ]
    out["op_logs_recent"] = [
        {"id": r[0], "user_id": r[1], "action": r[2], "target_type": r[3], "target_id": r[4],
         "created_at": str(r[5])}
        for r in c.execute(text(
            "SELECT id, user_id, action, target_type, target_id, created_at "
            "FROM operation_logs ORDER BY id DESC LIMIT 12"))
    ]
    out["system_configs_cols"] = [
        {"col": r[0], "type": r[1], "null": r[2], "key": r[3], "default": str(r[4])}
        for r in c.execute(text(
            "SELECT COLUMN_NAME, COLUMN_TYPE, IS_NULLABLE, COLUMN_KEY, COLUMN_DEFAULT "
            "FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=DATABASE() "
            "AND TABLE_NAME IN ('system_configs','role_permissions','operation_logs') "
            "ORDER BY TABLE_NAME, ORDINAL_POSITION"))
    ]
    out["kpi_def_cols"] = [
        r[0] for r in c.execute(text(
            "SELECT COLUMN_NAME FROM information_schema.COLUMNS "
            "WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME='kpi_definitions' "
            "ORDER BY ORDINAL_POSITION"))
    ]
    out["kpi_by_entity"] = [
        {"entity_id": r[0], "n": r[1]} for r in c.execute(text(
            "SELECT entity_id, COUNT(*) n FROM kpi_definitions GROUP BY entity_id ORDER BY entity_id"))
    ]
    out["budgetplan_by_entity"] = [
        {"entity_id": r[0], "n": r[1]} for r in c.execute(text(
            "SELECT kd.entity_id, COUNT(*) n FROM budget_plans bp "
            "JOIN kpi_definitions kd ON kd.id=bp.kpi_id GROUP BY kd.entity_id ORDER BY kd.entity_id"))
    ]

print(json.dumps(out, ensure_ascii=False, indent=1, default=str))
if "--json" in sys.argv:
    p = sys.argv[sys.argv.index("--json") + 1]
    Path(p).write_text(json.dumps(out, ensure_ascii=False, indent=1, default=str))
    print("WROTE", p)