#!/usr/bin/env python3
"""
常用场景验证：模板化客服 Agent + 统一 DSL 执行 + 执行链可读

验证点（与《90 天路线图》对齐）:
  - GET /api/v1/agents/scene-templates  场景模板可列举
  - POST /api/v1/agents/from-scene-template  一键生成可执行 Agent
  - POST /api/v1/executions  携带 scenario_dsl 的执行（引擎入口校验 + _scenario）
  - GET /api/v1/executions/{id}  终态
  - GET /api/v1/execution-logs/executions/{id}/chain/summary  链路汇总（根执行至少 1 条）

前置: API 已启动；已执行 alembic；Celery Worker 已启动（否则执行会长期 pending）。

用法:
  cd backend && .\\venv\\Scripts\\python.exe scripts/e2e_platform_capability_smoke.py

环境变量: PLATFORM_BASE_URL, PLATFORM_USERNAME, PLATFORM_PASSWORD
"""
from __future__ import annotations

import os
import sys
import time
from typing import Any, Dict

import requests

BASE = os.getenv("PLATFORM_BASE_URL", "http://127.0.0.1:8037").rstrip("/")
USER = os.getenv("PLATFORM_USERNAME", "admin")
PWD = os.getenv("PLATFORM_PASSWORD", "123456")


def _h() -> Dict[str, str]:
    r = requests.post(
        f"{BASE}/api/v1/auth/login",
        data={"username": USER, "password": PWD},
        headers={"Content-Type": "application/x-www-form-urlencoded"},
        timeout=15,
    )
    r.raise_for_status()
    token = r.json().get("access_token")
    if not token:
        raise RuntimeError("无 access_token")
    return {"Authorization": f"Bearer {token}", "Content-Type": "application/json"}


def _wait_terminal(h: Dict[str, str], eid: str, timeout_s: float = 120.0) -> Dict[str, Any]:
    t0 = time.time()
    while time.time() - t0 < timeout_s:
        r = requests.get(f"{BASE}/api/v1/executions/{eid}", headers=h, timeout=30)
        r.raise_for_status()
        d = r.json()
        st = d.get("status")
        if st in ("completed", "failed", "awaiting_approval"):
            return d
        time.sleep(1.0)
    raise TimeoutError(f"执行未在 {timeout_s}s 内结束: {eid}")


def main() -> int:
    # 0) 健康检查
    try:
        hr = requests.get(f"{BASE}/health", timeout=5)
        print("health:", hr.status_code, hr.text[:200])
    except Exception as e:
        print("health 请求失败（可忽略）:", e, file=sys.stderr)

    try:
        h = _h()
    except Exception as e:
        print("登录失败:", e, file=sys.stderr)
        return 1

    # 1) 场景模板列表
    tr = requests.get(f"{BASE}/api/v1/platform/scene-templates", headers=h, timeout=30)
    if tr.status_code != 200:
        print("scene-templates:", tr.status_code, tr.text[:800], file=sys.stderr)
        return 2
    templates = tr.json() or []
    print(f"scene-templates: {len(templates)} 个")
    tid = "template_customer_service"
    ids = [x.get("id") for x in templates if isinstance(x, dict)]
    if tid not in ids:
        print(f"警告: 未找到 {tid}，使用列表第一项", file=sys.stderr)
        tid = ids[0] if ids else None
    if not tid:
        print("无可用模板", file=sys.stderr)
        return 3

    # 2) 从模板创建 Agent（带轻量预算，验证 DB + 合并逻辑；可按需改大）
    name = os.getenv("SMOKE_AGENT_NAME") or f"冒烟_客服DSL_{int(time.time())}"
    cr = requests.post(
        f"{BASE}/api/v1/platform/agents/from-template",
        headers=h,
        json={
            "template_id": tid,
            "name": name,
            "description": "e2e_platform_capability_smoke 自动创建",
            "parameters": {"temperature": 0.35},
            "budget_config": {
                "max_steps": 50,
                "max_llm_invocations": 5,
                "max_tool_calls": 20,
            },
        },
        timeout=60,
    )
    if cr.status_code not in (200, 201):
        print("from-scene-template:", cr.status_code, cr.text[:1200], file=sys.stderr)
        return 4
    agent = cr.json()
    aid = agent.get("id")
    print("created agent:", aid, agent.get("name"))

    # 3) 携带 scenario_dsl 的执行（统一输入契约）
    user_msg = os.getenv("SMOKE_USER_QUERY") or "你好，请用一句话说明你能帮我做什么。"
    body = {
        "agent_id": aid,
        "input_data": {
            "query": user_msg,
            "scenario_dsl": {
                "version": "1",
                "scene": "customer_service_smoke",
                "goal": "验证平台 DSL + 模板 Agent 执行",
                "constraints": ["回答简短", "不要编造联系方式"],
                "deliverables": ["一句中文回复"],
                "acceptance": ["有明确语义"],
                "payload": {"channel": "smoke", "user_id": "e2e_smoke_user"},
            },
        },
    }
    er = requests.post(f"{BASE}/api/v1/executions", headers=h, json=body, timeout=30)
    if er.status_code not in (200, 201):
        print("executions:", er.status_code, er.text[:1200], file=sys.stderr)
        return 5
    eid = er.json()["id"]
    print("execution:", eid, "status=pending/running，等待 Celery …")

    try:
        fin = _wait_terminal(h, eid, timeout_s=float(os.getenv("SMOKE_WAIT_SEC", "120")))
    except TimeoutError as te:
        print(str(te), file=sys.stderr)
        print("若长期 running：请确认 Celery Worker 已启动且 REDIS 可用。", file=sys.stderr)
        return 6

    st = fin.get("status")
    print("final status:", st)
    if st == "failed":
        print("error_message:", fin.get("error_message"), file=sys.stderr)
        return 7
    if st == "awaiting_approval":
        print("停在审批节点（本冒烟未配置 approval），请检查工作流。", file=sys.stderr)
        return 8

    out = fin.get("output_data")
    preview = str(out)[:500] if out is not None else ""
    print("output_data preview:", preview)

    # 4) 执行链汇总（单节点链也应返回 total_executions>=1）
    sr = requests.get(
        f"{BASE}/api/v1/execution-logs/executions/{eid}/chain/summary",
        headers=h,
        timeout=30,
    )
    if sr.status_code == 200:
        s = sr.json()
        print(
            "chain/summary:",
            "total_executions=",
            s.get("total_executions"),
            "status_count=",
            s.get("status_count"),
            "max_depth=",
            s.get("max_depth"),
        )
    else:
        print("chain/summary:", sr.status_code, sr.text[:400], file=sys.stderr)

    print("OK — 常用场景（模板 + DSL + 执行 + 链）验证完成。")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())