"""TCP 协议端到端联调（模拟柜控板）——针对测试环境 device-server。

流程（严格按 docs/柜控板固件对接文档.md v1.1）：
    auth_str → login → status_post → bat_in → on(上报) → status_post×3(积分) → off

每一步都打印平台的应答，便于人工核对协议实现。
"""
import sys
import hashlib
import json
import socket
import time

HOST, PORT = "10.8.0.252", 3001
IMEI = "860000000000001"
BATTERY_ID = "SN-LEGACY-001"


def hex_channel(batt: int, power: int, soc_pct: int, voltage_001v: int,
                current_001a: int, temp_k: int) -> str:
    """按协议 §5.3：byte0 电池状态 / byte1 电源状态 / byte2 SOC(1%) /
    byte3-4 电压(0.01V 大端) / byte5-6 电流(0.01A 大端) / byte7-8 温度(1K 大端)。"""
    return (f"{batt:02x}{power:02x}{soc_pct:02x}"
            f"{voltage_001v:04x}{current_001a:04x}{temp_k:04x}")


EMPTY = hex_channel(0x00, 0x82, 0, 0, 0, 0)          # 空仓：无电池但有电源
CHARGING = hex_channel(0x82, 0x82, 85, 5400, 800, 298)  # 充电中：54.00V / 8.00A / 298K
FULL = hex_channel(0x81, 0x02, 100, 5460, 0, 298)    # 充满

assert len(EMPTY) == 18 and len(CHARGING) == 18, "通道 hex 必须 18 字符"
print(f"  通道 hex：空仓={EMPTY}  充电中={CHARGING}  充满={FULL}")


class Cabinet:
    def __init__(self):
        self.sock = socket.create_connection((HOST, PORT), timeout=10)
        self.sock.settimeout(10)
        self.buf = b""
        self.msg_id = 0

    def send(self, payload: dict):
        line = json.dumps(payload, separators=(",", ":"), ensure_ascii=False) + "\n"
        print(f"  → {line.strip()}")
        self.sock.sendall(line.encode())

    def recv(self, timeout=8):
        """读一行平台报文（LF 分帧）。"""
        deadline = time.time() + timeout
        while b"\n" not in self.buf:
            if time.time() > deadline:
                return None
            try:
                chunk = self.sock.recv(65536)
            except socket.timeout:
                return None
            if not chunk:
                return None
            self.buf += chunk
        line, self.buf = self.buf.split(b"\n", 1)
        obj = json.loads(line.decode())
        print(f"  ← {json.dumps(obj, ensure_ascii=False)}")
        return obj

    def next_id(self):
        self.msg_id += 1
        return self.msg_id


def step(title):
    print(f"\n=== {title} ===")


def status_post(cab, channels_board1, channels_board2, msg_id):
    cab.send({
        "act": "status_post",
        "msg_id": msg_id,
        "rssi": 85,
        "cabinet": {"status1": "00", "status2": "00", "temp": 29800, "meter": 125500},
        "boards": [
            {"board": 1, "channels": channels_board1},
            {"board": 2, "channels": channels_board2},
        ],
    })
    return cab.recv()


cab = Cabinet()
ok = []

step("① auth_str（未登录可发）")
cab.send({"act": "auth_str", "msg_id": cab.next_id(), "dev_id": IMEI})
resp = cab.recv()
auth_str = resp.get("auth_str") if resp else None
ok.append(("auth_str 返回 8 位安全码", bool(auth_str) and len(auth_str) == 8))
print(f"  安全码 = {auth_str}")

step("② login（签名 = SHA256(dev_id+auth_str+timestamp)[56..64]）")
ts = int(time.time())
sign = hashlib.sha256(f"{IMEI}{auth_str}{ts}".encode()).hexdigest()[56:64]
cab.send({"act": "login", "msg_id": cab.next_id(), "dev_id": IMEI,
          "sign": sign, "timestamp": ts, "iccid": "8986012520983901841"})
resp = cab.recv() or {}
ok.append(("login suc=1", resp.get("suc") == 1))
ok.append(("login 应答带 spec（非旧 cell）", "spec" in resp and "cell" not in resp))
ok.append(("login 应答带 work_mode", "work_mode" in resp))
ok.append(("login 应答带 act（协议 §3.1）", resp.get("act") == "login"))

step("③ status_post（全空仓，应回 suc=1）")
resp = status_post(cab, [EMPTY, EMPTY], [EMPTY, EMPTY], cab.next_id()) or {}
ok.append(("status_post suc=1", resp.get("suc") == 1))

step("④ bat_in（电池插入 —— 只登记台账，不建单）")
cab.send({"act": "bat_in", "msg_id": cab.next_id(), "id": "01-1", "battery": {
    "battery_id": BATTERY_ID, "brand_code": "1", "model_code": "1", "material_code": "1",
    "cell_count": 15, "rated_voltage": 48000, "rated_capacity": 24000,
    "info": "80825515180320012a",
    "cells": "0e100e150e0e0e120e170e0b0e110e140e0f0e130e160e0d0e100e120e0e0e170e0b012a0128",
}})
resp = cab.recv() or {}
ok.append(("bat_in suc=1", resp.get("suc") == 1))

step("⑤ on（设备上报形态，不带 suc —— 建单唯一入口）")
cab.send({"act": "on", "msg_id": cab.next_id(), "id": "01-1"})
resp = cab.recv() or {}
ok.append(("on 上报 suc=1", resp.get("suc") == 1))

step("⑥ status_post ×3（充电中，验证平台侧积分电量）")
for _ in range(3):
    resp = status_post(cab, [CHARGING, EMPTY], [EMPTY, EMPTY], cab.next_id()) or {}
    ok.append(("status_post(充电中) suc=1", resp.get("suc") == 1))

step("⑦ off（充满停止 —— 结束订单并结算电量）")
cab.send({"act": "off", "msg_id": cab.next_id(), "id": "01-1",
          "battery": {"battery_id": BATTERY_ID, "info": FULL}})
resp = cab.recv() or {}
ok.append(("off suc=1", resp.get("suc") == 1))

step("⑧ 未登录发业务报文（应被丢弃、无任何应答）")
try:
    bad = Cabinet()
    bad.send({"act": "status_post", "msg_id": 1, "rssi": 50,
              "cabinet": {"status1": "00", "status2": "00", "temp": 0, "meter": 0},
              "boards": [{"board": 1, "channels": [EMPTY, EMPTY]}]})
    silent = bad.recv(timeout=4)
    ok.append(("未登录业务报文被静默丢弃", silent is None))
    bad.sock.close()
except Exception as e:  # noqa: BLE001
    ok.append(("未登录业务报文被静默丢弃", False))
    print(f"    异常: {e}")

cab.sock.close()

print("\n========== 联调结果 ==========")
for name, passed in ok:
    print(f"  {'✅' if passed else '❌'} {name}")
print(f"\n  合计 {sum(1 for _, p in ok if p)}/{len(ok)} 通过")
# ⛔ 退出码必须反映结果：0=全部通过，1=有失败（此前本脚本永远 exit 0，属假绿）；
#    失败项额外打到 stderr，便于 CI/人只看 stderr 就能定位（口径见 AGENTS.md「验收流程」）。
failed = [n for n, p in ok if not p]
if failed:
    print("未通过项（stderr）：", file=sys.stderr)
    for n in failed:
        print(f"  ❌ {n}", file=sys.stderr)
    print(f"合计 {sum(1 for _, p in ok if p)}/{len(ok)} 通过，{len(failed)} 项失败", file=sys.stderr)
sys.exit(0 if not failed else 1)