# 任务管理接口
import json
import uuid

from apiflask import APIBlueprint, Schema
from apiflask.fields import String, Integer, IP, DateTime, List, Nested
from apiflask.validators import OneOf
from flask import current_app
from sqlalchemy import and_, desc, select
from sqlalchemy.exc import SQLAlchemyError

from .target import start_task_monitoring, target_GZ, task_monitoring, stop_task_monitoring
from model import Target, Task, Agent, TargetStatus
from .agentcomm import deliver_task, stop_task_deliver
from .policy import *
from .util import error, is_ipaddress, debug

from exts import db, scheduler
bp = APIBlueprint("任务管理接口集合", __name__, url_prefix="/task")


class TaskSchema(Schema):
    id = String()
    target = String()
    name = String()
    agent = String()
    target_domain = String()
    target_rr = String()
    policy = String()
    create_time = DateTime()
    status = String(validate=OneOf(["working", "stopped", "finished"]))


# 执行输出日志
class TaskLogSchema(Schema):
    # 输出时间
    time = DateTime()
    # 输出来源IP
    ip = String()
    # 该策略的目标IP
    targetip = String()
    # 日志等级
    level = String(validate=OneOf(["INFO", "WARNING", "ERROR"]))
    # 日志内容
    info = String()


# 任务状态时间轴信息
class TaskState(Schema):
    # 策略开始执行时间
    start_time = DateTime()
    # 策略名称
    policy_name = String()
    # 策略参数
    policy_param = String()
    # 执行策略编号
    policy_id = String()
    # 效果评估
    evaluate_status = String()
    # 当前状态
    policy_status = String()
    


# 任务创建参数逻辑合法性检查
def valid_task_info(task_param: dict):
    if task_param["policy"] == "sjqp":
        if task_param["target_rr"] == "" or task_param["tdomain"] == "":
            return "数据欺骗缺乏目标域名或注入参数"
    return None


# 创建任务接口
@bp.post("/create")
@bp.doc("任务创建接口", "部分字段值的映射关系：</br>"
        + "policy 期望策略，可选参数范围及对应含义为：，auto-自动，ddos-拒绝服务，sjqp-数据欺骗</br>"
        + "scan 状态感知方式，可选参数范围及对应含义为：auto-自动，icmp-icmp/v6时延，tcp-tcp时延，dns-dns时延，record-记录正确性验证")
@bp.input({
    # 任务名称
    "name": String(),
    # 目标IP
    "target": IP(required=False),
    # 执行代理
    "agent": String(),
    # 目标域名
    "target_domain": String(required=False),
    # 期望注入记录
    "target_rr": String(required=False),
    # 期望策略
    "policy": String(validate=OneOf(["auto", "ddos", "sjqp"]), load_default="auto"),
    # 状态感知方式
    "scan": String(validate=OneOf(["auto", "icmp", "dns", "tcp", "record"]), load_default="auto"),
    # 策略切换时限,单位分钟
    "policy_time": Integer(load_default=60),
    # 任务执行时限，单位分钟
    "run_time": Integer(load_default=600),
    # 运行配置
    "run_flag": String(validate=OneOf(["now", "man"]), load_default="now")
}, example={'name': "test_task", 'target': "1.2.3.4", 'agent': "8a9ces", 'target_domain': "www.google.com",
            'target_rr': "NS ns.ourattack.com",
            'policy': "auto", 'scan': "auto",
            'policy_time': 60, "run_time": 600, 'run_flag': "now"})
@bp.output({
    "code": Integer(),
    "msg": String()
})
# TODO: 需要更新接口，created_by
def make_task(json_data):
    task = Task(
        task_id=str(uuid.uuid1()),
        task_name=json_data.get("name"),
        agent_id=json_data.get("agent"),
        # created_by = "Admin",
        # target_ip=str(json_data.get("target")),
        ptype = json_data["policy"],
        status="working" if json_data.get("run_flag") == "now" else "stop",
        policy_delay=json_data.get("policy_time"),
        task_delay=json_data.get("run_time"),
        target_scan=json_data.get("scan"),
        target_domain=json_data.get("target_domain"),
        # target_rtype=,
        target_rr=json_data.get("target_rr")
    )
    if task.ptype == "sjqp":
        if task.target_rr == "" or task.target_domain == "":
            return {"code": 400, "msg": "数据欺骗缺乏目标域名或注入参数"}

    if task.target_rr is not None:
        task.target_rtype, task.target_rr = task.target_rr.split(" ")

    # 关联目标
    Ip = str(json_data.get("target"))
    ip_version = is_ipaddress(Ip)
    target = None
    if ip_version == 4 :
        target = db.session.query(Target).filter(Target.addrv4==Ip).first()
    elif ip_version == 6:
        target = db.session.query(Target).filter(Target.addrv6==Ip).first()
    
    
    # 不存在该目标的相关记录，自动探测并存入数据库
    if not target:
        target = target_GZ(Ip)
    task.target = target

    # 查找所有在线的用于状态感知的agent
    agents = db.session.query(Agent).filter(and_(Agent.status == True, Agent.agent_type == 'ztgz')).all()
    agents = random.sample(agents, min(10, len(agents)))
    selected_nodes_info = {}
    for agent in agents:
        selected_nodes_info[agent.agent_id] = agent.ipaddr.split("|")[0] + ":" + str(agent.port)
    task.SCAN_AGENT_ID_LIST = json.dumps(selected_nodes_info)

    # 插入task
    try:
        db.session.add(task)
        db.session.commit()
    except SQLAlchemyError as e:
        db.session.rollback()
        error(str(e))
        return {"code": 500, "msg": str(e)}

    # 任务策略初始化
    task_policy = init_task_policy(task)
    # 创建锚点
    task_monitoring(task)
    
    # 初始化决策中心
    db.session.close()
    task_policy = db.session.query(TaskPolicy).filter_by(for_task = task.task_id).order_by(TaskPolicy.tp_time.desc()).first()
    status = db.session.query(TargetStatus).filter_by(tp_id=task_policy.tp_id).order_by(TargetStatus.time.desc()).first()

    req = {
        "clxz": task_policy.Policy.p_type,
        "script": task_policy.Policy.p_name,
        "mbgz": json.loads(task.target.protect),
        "ztgz": {
            "icmp": status.icmp,
            "tcp": status.tcp,
            "dns": status.dns,
            "record": status.recorde,
        },
        "para": task_policy.policy_param
    }
    url = f"http://localhost:12535/initial"
    response = requests.post(url, json=req)

    # 开启监控
    start_task_monitoring(task)
    start_policy_change_timer(task)

    # 根据状态判断是否立刻执行
    if task.status == "working":
        err = deliver_task(task_policy)
        if err is not None:
            error(str(err))
            return {"code": 500, "msg": str(err)}
    return {"code": 200, "msg": "ok"}


def policy_change_timer(task):
    with scheduler.app.app_context():
        task_policy=db.session.query(TaskPolicy).get(task.task_policies[-1].tp_id)
        if not effective_detection(task_policy=task_policy):
            adjust_task(task=task)

# 任务切换倒计时
# 从任务下发开始计算，倒计时三百秒切换任务
def start_policy_change_timer(task):
    with scheduler.app.app_context():
        scheduler.add_job(
            func=policy_change_timer,  # 要执行的函数
            trigger='interval',  # 触发器类型为间隔
            args = (task, ),  # 传递给函数的参数
            id = f"{task.task_id}chnage",
            seconds = 300
        )

def stop_policy_change_timer(task):
    scheduler.remove_job(f"{task.task_id}chnage")

# 任务成功检测
def effective_detection(task_policy):
    with scheduler.app.app_context():
        debug("检测中")
        base = db.session.query(TargetStatus).filter_by(tp_id=task_policy.tp_id).order_by(TargetStatus.time.asc()).first()
        now = db.session.query(TargetStatus).filter_by(tp_id=task_policy.tp_id).order_by(TargetStatus.time.desc()).first()

        rec = None
        p_type = db.session.query(Policy).filter_by(p_id=task_policy.policy).first().p_type
        if p_type=="ddos":
            debug("是ddos")
            target_scan = db.session.query(Task).filter_by(task_id = task_policy.for_task).first().target_scan
            if target_scan=="auto" or target_scan=="icmp":
                rec = base.icmp*5 < now.icmp       
            elif target_scan=="tcp":
                rec = base.tcp*5 < now.tcp       
            elif target_scan=="dns":
                rec = base.dns*5 < now.dns       
        elif p_type=="sjqp":
            rec = base.recorde!=now.recorde
            pass
        debug(f"能行吗{rec}：是{p_type}")
        return rec

def adjust_task(task):
    with scheduler.app.app_context():
        debug("再试试")
        task_policy = db.session.query(TaskPolicy).filter_by(for_task = task.task_id).order_by(TaskPolicy.tp_time.desc()).first()
        stop_task_deliver(task_policy)
        center_process_unit(task)
        task_policy = db.session.query(TaskPolicy).filter_by(for_task = task.task_id).order_by(TaskPolicy.tp_time.desc()).first()
        task.status = "working"
        db.session.commit()
        deliver_task(task_policy)


def stop_task(task):
    with scheduler.app.app_context():
        debug("暂停啦啦")
        task_policy = db.session.query(TaskPolicy).filter_by(for_task = task.task_id).order_by(TaskPolicy.tp_time.desc()).first()
        task.status = "stopped"
        stop_task_monitoring(task)
        stop_policy_change_timer(task)
        stop_task_deliver(task_policy)
        db.session.commit()

def finish_task(task):
    with scheduler.app.app_context():
        task = db.session.query(Task).filter_by(task_id = task.task_id).first()
        debug("成功啦|失败！")
        task_policy = task.task_policies[-1]
        task.status = "finish"
        stop_task_monitoring(task)
        stop_policy_change_timer(task)
        stop_task_deliver(task_policy)
        db.session.commit()

operation_map = {"start": "开始", "stop": "暂停"}
status_map = {"working": "执行中", "stopped": "暂停"}
# 合法的状态转移逻辑，例如，暂停的任务不能开始，正在执行的任务不能停止
valid_transitions = {"start": ["stopped"], "stop": ["working"]}
# 操作与状态变更结果的映射关系
operation_result_map = {"start": "working", "stop": "stopped"}

# 操作任务开始和停止控制接口
@bp.post("/ops")
@bp.doc("任务操作接口")
@bp.input({
    "taskid": String(required=True),
    "ops": String(required=True, validate=OneOf(["start", "stop"]))
})
@bp.output({
    "code": Integer(),
    "msg": String(),
})
def handle_task_operation(json_data):
    operation = json_data["ops"]
    task_id = json_data["taskid"]

    task = db.session.query(Task).get(task_id)
    if not task:
        return {"code": 400, "msg": f"任务 {task_id} 不存在！"}
    

    if task.status not in valid_transitions.get(operation, []):
        return {"code": 400, "msg": f"无法对一个 {status_map[task.status]} 的任务执行 {operation_map[operation]} 操作"}
    
    if operation == "start":
        deliver_task(copy_task_policy(task))
    else:  # operation is "stop"
        latest_task_policy = db.session.query(TaskPolicy)\
            .filter_by(for_task=task.task_id)\
            .order_by(TaskPolicy.tp_time.desc())\
            .first()
        stop_task(latest_task_policy)

    task.status = operation_result_map[operation]
    db.session.commit()
    
    return {"code": 200, "msg": f"任务 {task.task_id} 已 {operation_map[operation]}"}




# 查询任务列表接口
@bp.get("/")
@bp.doc("任务列表信息获取接口")
@bp.input({
    "page": Integer(load_default=1),
    "per_page": Integer(load_default=10),
    "task_id":String(required=False)
}, location="query")
@bp.output({
    "code": Integer(),
    "data": List(Nested(TaskSchema())),
    "total": Integer()
})
# TODO：DoH适配
def tasks_state(query_data):
    per_page = query_data["per_page"]
    page = query_data["page"]
    task_id = query_data.get("task_id")
    if task_id:
        query = db.session.query(Task).filter_by(task_id = task_id)
    else:
        query = db.session.query(Task).filter().order_by(Task.created_time.desc())
    task_count = query.count()
    tasks = query.offset((page - 1) * per_page).limit(per_page).all()

    task_list = []
    for task in tasks:
        task_r = {}
        task_r["id"] = task.task_id
        task_r["target"] = f"{task.target.addrv4}|{task.target.addrv6}"
        task_r["name"] = task.task_name
        task_r["agent"] = task.agent_id
        task_r["target_domain"] = task.target_domain
        task_r["target_rr"] = task.target_rr
        task_r["policy"] = task.ptype
        task_r["create_time"] = task.created_time
        task_r["status"] = task.status
        task_list.append(task_r)
    return {"code": 200, "data": task_list, "total": task_count}


# 任务详情接口
@bp.get("/detail")
@bp.doc("任务执行状态时间轴信息获取接口")
@bp.input({
    "taskid": String(required=True),
}, location="query")
@bp.output({
    "code": Integer(),
    "data": List(Nested(TaskState()))
})
def task_info(query_data):
    task = db.session.query(Task).get(query_data["taskid"])
    if task is None:
        return {"code": 404, "data": []}
    task_policies = task.task_policies
    task_state_list = []
    if len(task_policies) == 0:
        return {"code": 404, "data": []}
    else:
        # 初始化 task_state_list
        task_state_list = []

        # 遍历 task_policies，构建任务状态列表
        for task_policy in task_policies:
            # 查询与当前 task_policy 相关的 TargetStatus，按时间降序排序，取最新一条
            delay = db.session.query(TargetStatus).filter_by(tp_id=task_policy.tp_id).order_by(TargetStatus.time.desc()).first()
            
            # 构建任务状态字典
            task_state = {
                "start_time": task_policy.tp_time,
                "policy_name": task_policy.Policy.p_name,
                "policy_param": task_policy.policy_param,
                "policy_id": task_policy.tp_id,
                "policy_status": "stopped",
                "evaluate_status": str({
                    "icmp": delay.icmp,
                    "tcp": delay.tcp,
                    "dns": delay.dns,
                    "record": delay.recorde
                }) if delay else "暂无数据"
            }

            task_state_list.append(task_state)

        # 处理最后一个任务状态
        last_task_state = task_state_list[-1]
        last_task_policy = task_policies[-1]

        # 根据 task 的状态更新任务状态
        last_task_state["policy_status"] = task.status

        if task.status == "working":
            last_task_state["evaluate_status"] = "任务进行中"
        elif not last_task_policy.target_status:
            last_task_state["evaluate_status"] = "评估进行中"
        elif task.status == "stopped":
            delay = last_task_policy.target_status[-1]
            last_task_state["evaluate_status"] = str({
                "icmp": delay.icmp,
                "tcp": delay.tcp,
                "dns": delay.dns,
                "record": delay.recorde
            })

    策略 = {
        "应答率": {
            "策略名": 60
        },
        "篡改成功率": {
            "策略名": 25
        }
    }
    return {"code": 200, "data": task_state_list}


@bp.get("/tp")
@bp.doc("任务策略执行日志获取接口")
@bp.input({
    "id": Integer(required=True),
    "per_page": Integer(load_default=10),
    "page": Integer(load_default=1)
}, location="query")
@bp.output({
    "code": Integer(),
    "data": List(Nested(TaskLogSchema())),
    "total": Integer()
})
def taskpolicy_log(query_data):
    id = query_data["id"]
    per_page = query_data["per_page"]
    page = query_data["page"]
    task_policy = db.session.get(TaskPolicy, id)
    if task_policy is None:
        return {"code": 404}

    logs = task_policy.task_logs
    # 分页
    total = len(logs)
    start = (page - 1) * per_page
    end = start + per_page
    paginated_logs = logs[start:end]

    log_data = [{
        "time": log.created_time,
        "targetip": f"{log.task_policy.task.target.addrv4}|{log.task_policy.task.target.addrv4}",
        "ip": log.task_policy.task.agent.ipaddr,
        "level": log.tlog_level,
        "info": log.tlog_info
    } for log in paginated_logs]

    return {"code": 200,
            "data": log_data,
            "total": total}


@bp.doc("任务删除接口", "输入参数说明：</br>"
        + "id: 任务编号")
@bp.post("/del")
@bp.input({
    "id": String(required=True)
})
@bp.output({
    "code": Integer(),
    "msg": String()
})
def del_task(json_data):
    try:
        # 查找并删除任务
        task = db.session.query(Task).get(json_data["id"])
        if task:
            db.session.delete(task)
            db.session.commit()
            return {"code": "200", "msg": "任务删除成功"}
        else:
            return {"code": "404", "msg": "该任务id未找到！"}
    except SQLAlchemyError as e:
        db.session.rollback()
        error(str(e))
        return {"code": 500, "msg": str(e)}