"""发布客服 Agent 的运行期配置：意图工具白名单（走发布状态机）。

两个必须讲清的点：

1. **为什么必须发这一步**：工具白名单是失败关闭的——`ToolExecutor` 拿发布配置里
   `agent_tools` / `customer_service:<intent>` 的 `allowed_tools` 与代码声明的
   `AgentDefinition.allowed_tools` 取交集，缺配置时交集为空、任何工具调用都被拒。
   「Agent 写好了但没发配置」的表现是"客服什么都答不了、一直在引导人工"。

2. **为什么必须继承现有配置项**：`config_release` 是**整版本替换**语义——激活新版本后，
   旧版本的所有配置项都不再生效。若只发布客服自己的白名单，示例 Agent 的
   `fund_query_demo:fund_quote` 会被静默清空。所以发布前先把当前 effective 版本里的
   配置项原样搬进新版本，再追加本次新增项。

用法：python tools/publish_customer_service_config.py
"""

import asyncio
import datetime as dt
import json
import sys
import uuid
from pathlib import Path
from typing import Any

import asyncmy
import httpx
import jwt

from app.core.config import get_settings
from app.main import create_app

ADMIN = "9003"
AGENT_TYPE = "customer_service"
TOOL_NAME = "search_knowledge"
# 只有会调用工具的意图才需要白名单；chitchat（模型生成）与 transfer_human（引导人工）
# 都不查知识库。给它们配空白名单反而会掩盖"配置漏配"，因此不发布这两条。
INTENTS = ("faq", "product_inquiry", "policy_explain")


def token(subject: str) -> str:
    settings = get_settings()
    private_key = Path(settings.jwt_private_key_path).read_text(encoding="utf-8")
    now = dt.datetime.now(dt.UTC)
    return jwt.encode(
        {
            "sub": subject, "iss": settings.jwt_issuer, "aud": settings.jwt_audience,
            "exp": now + dt.timedelta(minutes=30), "nbf": now - dt.timedelta(seconds=5),
            "jti": str(uuid.uuid4()),
        },
        private_key,
        algorithm="RS256",
    )


async def active_config_items() -> list[dict[str, Any]]:
    """读取当前生效版本的全部配置项，用于在新版本里原样继承。"""
    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(":")
    connection = await asyncmy.connect(
        host=host, port=int(port or 3306), user=user, password=password, db=database
    )
    try:
        cursor = connection.cursor()
        await cursor.execute(
            """
            SELECT i.namespace, i.config_key, i.value_json, i.schema_version
            FROM platform_config_item i
            JOIN config_release r ON r.id = i.release_id
            WHERE r.status = 'active'
            """
        )
        rows = await cursor.fetchall()
    finally:
        connection.close()
    items: list[dict[str, Any]] = []
    for namespace, config_key, value_json, schema_version in rows:
        value = json.loads(value_json) if isinstance(value_json, str) else value_json
        items.append({
            "namespace": namespace,
            "item_key": config_key,
            "value_json": value,
            "schema_version": schema_version,
        })
    return items


async def post(
    client: httpx.AsyncClient, path: str, *, auth: dict[str, str],
    payload: dict[str, object] | None = None, if_match: str | None = None,
) -> httpx.Response:
    headers = {**auth, "Idempotency-Key": uuid.uuid4().hex}
    if if_match:
        headers["If-Match"] = if_match
    return await client.post(path, json=payload, headers=headers)


async def etag_of(client: httpx.AsyncClient, path: str, auth: dict[str, str]) -> str | None:
    return (await client.get(path, headers=auth)).headers.get("ETag")


async def main() -> int:
    app = create_app()
    auth = {"Authorization": f"Bearer {token(ADMIN)}"}
    async with httpx.AsyncClient(
        transport=httpx.ASGITransport(app=app), base_url="http://test", timeout=60
    ) as client:
        inherited = await active_config_items()
        print(f"当前生效版本的配置项：{len(inherited)} 条（将原样继承）")
        for item in inherited:
            print(f"  · {item['namespace']} / {item['item_key']}")

        new_items = [
            {
                "namespace": "agent_tools",
                "item_key": f"{AGENT_TYPE}:{intent}",
                "value_json": {"allowed_tools": [TOOL_NAME]},
                "schema_version": "1",
            }
            for intent in INTENTS
        ]
        inherited_keys = {(str(i["namespace"]), str(i["item_key"])) for i in inherited}
        pending = [
            item for item in new_items
            if (str(item["namespace"]), str(item["item_key"])) not in inherited_keys
        ]
        if not pending:
            print("客服白名单已存在于当前生效版本，无需发布")
            return 0

        created = await post(client, "/api/v1/admin/config-releases", auth=auth, payload={
            "release_no": f"cs-tools-{uuid.uuid4().hex[:12]}",
            "title": "客服 Agent 意图工具白名单",
            "change_summary": "新增 faq/product_inquiry/policy_explain 的知识检索白名单，并继承既有配置项",
        })
        if created.status_code != 201:
            print(f"创建发布版本失败：{created.status_code} {created.text[:200]}")
            return 1
        release_id = int(created.json()["data"]["id"])
        print(f"\n发布版本 id={release_id}")

        base = f"/api/v1/admin/config-releases/{release_id}/platform-config-items"
        for item in [*inherited, *pending]:
            response = await post(client, base, auth=auth, payload=item)
            mark = "继承" if item in inherited else "新增"
            print(f"  [{mark}] {item['namespace']}/{item['item_key']} → {response.status_code}")
            if response.status_code != 201:
                print(f"    失败：{response.text[:200]}")
                return 1

        release_base = f"/api/v1/admin/config-releases/{release_id}"
        submitted = await post(
            client, f"{release_base}/validations", auth=auth, payload={},
            if_match=await etag_of(client, release_base, auth),
        )
        print(f"\n提交复核：{submitted.status_code}")
        reviewed = await post(
            client, f"{release_base}/reviews", auth=auth,
            payload={"decision": "approved", "comment": "客服工具白名单"},
            if_match=await etag_of(client, release_base, auth),
        )
        print(f"审核：{reviewed.status_code}")
        activated = await post(
            client, f"{release_base}/activations", auth=auth, payload={},
            if_match=await etag_of(client, release_base, auth),
        )
        print(f"激活：{activated.status_code}")
        if activated.status_code not in (200, 201):
            print(f"  失败：{activated.text[:200]}")
            return 1
        print(f"最终状态：{activated.json()['data']['status']}")

        remaining = await active_config_items()
        print(f"\n激活后生效版本配置项：{len(remaining)} 条")
        for item in remaining:
            print(f"  · {item['namespace']} / {item['item_key']} = {item['value_json']}")
        return 0


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