import json
from collections import deque
import os
import sys
from datetime import datetime

# 将 LAS 根目录加入 sys.path
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))

import core.alarm_plan_helper as helper
from common.sys_comm import (
    LOGDBG, LOGINFO, LOGWARN, LOGERR, EC,
    get_utc_time_ms, get_utc_time_s, get_bj_time_ms, get_bj_time_s,
    utc_to_bj_ms, bj_to_utc_ms, utc_to_bj_s, bj_to_utc_s
)
from core.alarm_plan import EventAttr_SleepMonitoring


class SleepReplayAnalyzer:
    def __init__(self, file_path, bed_rect_ltwh):
        """
        file_path: 录像文件路径
        bed_rect_ltwh: 床区域 [left, top, width, height]
        """
        self.file_path = file_path
        self.bed_rect_ltwh = bed_rect_ltwh

        # 窗口和状态
        self.motion_buffer = deque()  # 每条: (ts, motion_value)
        self.sleep_segments_ = []

        self.last_target_point = None
        self.last_target_ts = None
        self.motion_stat_ = "leave"
        self.sleep_stat_ = "leave"

    # 判断目标点是否在床区域
    def _is_point_in_bed(self, target_point):
        x, y, *_ = target_point
        l, t, w, h = self.bed_rect_ltwh
        return l <= x <= l + w and t <= y <= t + h

    # 根据窗口计算平滑运动状态
    def _calc_motion_state_window(self, current_ts, threshold_peaceful=5, threshold_micro=10):
        try:
            # 清理超过60秒的数据
            while self.motion_buffer and current_ts - self.motion_buffer[0][0] > 60:
                self.motion_buffer.popleft()
            # 平滑运动
            if self.motion_buffer:
                smooth_motion = sum(v for _, v in self.motion_buffer) / len(self.motion_buffer)
            else:
                smooth_motion = 0
            # 运动状态
            if smooth_motion < threshold_peaceful:
                motion = "peaceful"
            elif smooth_motion < threshold_micro:
                motion = "micro"
            else:
                motion = "active"
            return motion, smooth_motion
        except Exception as e:
            LOGERR(f"_calc_motion_state_window error: error: {e}")

    def analyze(self):
        if not os.path.exists(self.file_path):
            LOGERR(f"录像文件不存在: {self.file_path}")
            return

        last_saved_minute = None

        with open(self.file_path, "r", encoding="utf-8") as f:
            lines = f.readlines()

        for line in lines:
            line = line.strip()
            if not line:
                continue
            try:
                entry = json.loads(line)
                ts = entry["ts"] / 1000.0  # 转秒
                payload = entry["payload"]
                targets = payload.get("tracker_targets", [])
                breath_rpm = payload.get("health", {}).get("breath_rpm", 0.0)

                # --- 运动状态分析 ---
                motion = self.motion_stat_
                if targets:
                    if not self._is_point_in_bed(targets[0]):
                        motion_value = 0
                        smooth_motion = 0
                        motion = "leave"
                        LOGDBG(f"motion: {motion}, with target and not in bed")
                    else:
                        motion_value = 0
                        if self.last_target_point is not None:
                            x1, y1, z1, _ = self.last_target_point
                            x2, y2, z2, _ = targets[0]
                            motion_value = ((x2 - x1) ** 2 + (y2 - y1) ** 2 + (z2 - z1) ** 2) ** 0.5
                        self.motion_buffer.append((ts, motion_value))
                        motion, smooth_motion = self._calc_motion_state_window(ts)
                    self.last_target_point = targets[0]
                    self.last_target_ts = ts
                else:
                    smooth_motion = 0
                    # 无目标时，根据最后目标位置判断
                    if self.last_target_point and self._is_point_in_bed(self.last_target_point):
                        # 目标消失但仍在床上，认为静止
                        motion = "peaceful"
                    else:
                        # 目标消失且不在床上，认为离床
                        motion = "leave"
                        LOGDBG(f"motion: {motion}, without target and not in bed")

                    # 为保持平滑趋势，补入0
                    self.motion_buffer.append((ts, 0))

                self.motion_stat_ = motion

                # --- 睡眠状态分析 ---
                if breath_rpm < 8: breathe_stat = "r0"
                elif breath_rpm < 12: breathe_stat = "r1"
                elif breath_rpm < 18: breathe_stat = "r2"
                elif breath_rpm < 25: breathe_stat = "r3"
                else: breathe_stat = "r4"

                i_motion = EventAttr_SleepMonitoring.motion_stat.index(self.motion_stat_)
                i_breath = EventAttr_SleepMonitoring.breathe_stat.index(breathe_stat)
                sleep_stat = EventAttr_SleepMonitoring.sleep_stat[i_motion][i_breath]

                # --- 按分钟保存 sleep_segment ---
                dt = datetime.fromtimestamp(ts)
                current_minute = dt.replace(second=0, microsecond=0)
                if last_saved_minute != current_minute:
                    sleep_segment = {
                        "ts": ts,
                        "sleep_stat": sleep_stat,
                        "smooth_motion": round(smooth_motion, 3),
                        "breath_rpm": breath_rpm,
                        "breathe_stat": breathe_stat
                    }
                    self.sleep_segments_.append(sleep_segment)
                    last_saved_minute = current_minute

            except Exception as e:
                LOGERR(f"解析行失败: {line}, error: {e}")

    def export_report(self, out_file=None):
        if not out_file:
            out_file = os.path.splitext(self.file_path)[0] + "_sleep_report.json"
        try:
            with open(out_file, "w", encoding="utf-8") as f:
                json.dump(self.sleep_segments_, f, ensure_ascii=False, indent=2)
            LOGINFO(f"睡眠报告已生成: {out_file}")
            print(f"睡眠报告已生成: {out_file}")
        except Exception as e:
            LOGERR(f"保存睡眠报告失败: {e}")
            print(f"保存睡眠报告失败: {e}")


# ---------------- 使用示例 ----------------
if __name__ == "__main__":
    if 0:
        dev_id = "94A9900B0B38"
        bed_rect = [0, 115, 200, 115]
    else:
        dev_id = "94A9900B0B80"
        bed_rect = [-10, 130, 120, 210]
    file_path = f"demos/record/{dev_id}.raw.json"
    analyzer = SleepReplayAnalyzer(file_path, bed_rect)
    analyzer.analyze()

    ts = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
    analyzer.export_report(f"./demos/record/report_{dev_id}_{ts}.json")