"""补齐风控模块需要的 RBAC 权限。

**背景（实测）**：风控 service 层用 `AuthorizationService.require` 声明了四个权限码，
但 `sys_permission` 表里**只有一个**（`risk:alert:read`，本脚本早先建的）。其余三个不存在，
于是对应功能**全部失败关闭**：

| 权限码 | 用途 | 缺失后果 |
|---|---|---|
| `risk:alert:read` | 预警查询 / 研判 / 日报 / 通知 | （已建，正常） |
| `risk:alert:write` | 预警处置 / 证据归档 | 6 处调用被拒：确认、关闭、升级、归档都做不了 |
| `risk:alert:scan` | 规则扫描 | 扫描端点调不了 |
| `risk:report:mail` | 发送日报邮件 | 本次新增；邮件默认关闭，但仍需授权 |

失效的表现是 `ForbiddenAgentError`，而**只读查询一切正常** —— 所以很容易以为"风控能用"，
直到去点处置按钮才发现。这与 `risk:alert:read` 当初缺失是同一类问题，只是面更广。

**字段怎么填**（照现有数据推断，不是自创）：

- 权限匹配实际用的是 `permission_code` 全串（`identity_repository.py:25-37`），
  `resource` / `action` 只是元数据；
- 参照 `fund:quote:read`（`resource=fund`、`action=quote`）：`resource` 取第一段、
  `action` 取第二段；
- `data_scope` 取 `all`：风控要处理**全部客户**的预警，且 `risk_query_service.py:194`、
  `risk_analysis_service.py:126`、`risk_evidence_archive_service.py:218`、
  `risk_action_service.py:212` 都按 `context.data_scope == "all"` 决定是否放行全量数据。

**授权给谁**：`risk_operator` 与 `admin`。风控 Agent 的
`AgentDefinition.allowed_roles = ("risk_operator", "admin")` 两个都声明了，
所以两个角色都该能真正用起来 —— 只给 `risk_operator` 会让 admin 声明了却用不了。

幂等：权限与绑定都已存在时直接跳过。

用法：python tools/grant_risk_permissions.py
"""

import asyncio
import datetime as dt
import sys

import asyncmy

from app.core.config import get_settings

# (permission_code, resource, action, 授予的角色)
PERMISSIONS: tuple[tuple[str, str, str, tuple[str, ...]], ...] = (
    ("risk:alert:read", "risk", "alert", ("risk_operator", "admin")),
    ("risk:alert:write", "risk", "alert", ("risk_operator", "admin")),
    ("risk:alert:scan", "risk", "alert", ("risk_operator", "admin")),
    ("risk:report:mail", "risk", "report", ("risk_operator", "admin")),
)
DATA_SCOPE = "all"


async def connect() -> "asyncmy.Connection":
    settings = get_settings()
    # MYSQL_DSN 形如 mysql+asyncmy://user:pass@host:port/db
    dsn = settings.mysql_dsn.split("://", 1)[1]
    credentials, location = dsn.split("@", 1)
    user, password = credentials.split(":", 1)
    host_port, database = location.split("/", 1)
    host, _, port = host_port.partition(":")
    return await asyncmy.connect(
        host=host, port=int(port or 3306), user=user, password=password, db=database
    )


async def main() -> int:
    connection = await connect()
    granted = 0
    try:
        cursor = connection.cursor()
        now = dt.datetime.now(dt.UTC).replace(tzinfo=None)
        for code, resource, action, roles in PERMISSIONS:
            await cursor.execute(
                "SELECT id FROM sys_permission WHERE permission_code = %s", (code,)
            )
            row = await cursor.fetchone()
            if row is None:
                await cursor.execute(
                    "INSERT INTO sys_permission"
                    " (permission_code, resource, `action`, data_scope, created_at, updated_at)"
                    " VALUES (%s, %s, %s, %s, %s, %s)",
                    (code, resource, action, DATA_SCOPE, now, now),
                )
                await cursor.execute(
                    "SELECT id FROM sys_permission WHERE permission_code = %s", (code,)
                )
                row = await cursor.fetchone()
                print(f"[权限] 已创建 {code}（scope={DATA_SCOPE}）")
            else:
                print(f"[权限] {code} 已存在")
            permission_id = int(row[0])

            for role_code in roles:
                await cursor.execute("SELECT id FROM sys_role WHERE role_code = %s", (role_code,))
                role = await cursor.fetchone()
                if role is None:
                    print(f"[角色] 找不到 {role_code}，跳过 {code}")
                    continue
                role_id = int(role[0])
                await cursor.execute(
                    "SELECT 1 FROM sys_role_permission WHERE role_id = %s AND permission_id = %s",
                    (role_id, permission_id),
                )
                if await cursor.fetchone() is not None:
                    continue
                await cursor.execute(
                    "INSERT INTO sys_role_permission (role_id, permission_id, created_at)"
                    " VALUES (%s, %s, %s)",
                    (role_id, permission_id, now),
                )
                granted += 1
                print(f"[绑定] 授予 {role_code} → {code}")
        await connection.commit()
        print(f"\n本次新增绑定 {granted} 条")
        return 0
    finally:
        connection.close()


sys.exit(asyncio.run(main()))