from pathlib import Path
import json
import pandas as pd
import requests
from io import StringIO
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel

app = FastAPI(title="飞参判读API")

# 获取当前文件的父目录的父目录
current_dir = Path(__file__).parent
json_path = current_dir.parent / "config" / "config.json"

# 读取 JSON
with open(json_path, "r", encoding="utf-8") as f:
    config = json.load(f)

headers = config['mutationFailures']

# 故障分数公式为 60 - 60 * A（A）为系数


# 逻辑判断函数
def check_abnormal_headers(dataframe):
    abnormal_headers = []
    headers = config['logicalFailures']

    # 遍历所有列（表头）
    for header in headers:
        # 检查该列是否存在至少一个1
        if (dataframe[header] == 1).any():
            abnormal_headers.append(header)

    return abnormal_headers


# 突发故障判断逻辑
def analyze_excel_data(dataframe):
    results = []
    faults = []  # 故障
    degradations = []  # 退化
    headers = config['mutationFailures']

    for column_rule in headers:
        column_name = column_rule["column"]
        normal_range = column_rule["normalRange"]
        degradation_range = column_rule["degradationInterval"]
        variable = column_rule["variable"]

        normal_lower, normal_upper = normal_range[0], normal_range[1]
        degradation_lower, degradation_upper = degradation_range[0], degradation_range[1]

        # 数据预处理
        col_data = pd.to_numeric(dataframe[column_name], errors="coerce").dropna()
        if len(col_data) == 0:
            continue

        # 突发故障判断
        if ((col_data > degradation_upper) | (col_data < degradation_lower)).any():
            results.append(f"{column_name}突发故障")
            faults.append(f"{column_name}突变故障")
            continue

        # 相邻值变化量检测 ----------------------------------------
        is_fault_detected = False
        # 遍历所有相邻数据点（至少需要2个数据）
        for i in range(len(col_data) - 1):
            current_val = col_data.iloc[i]
            next_val = col_data.iloc[i + 1]

            # 判断两个值是否都处于退化区间内
            if (current_val >= degradation_lower) and (current_val <= degradation_upper) \
                    and (next_val >= degradation_lower) and (next_val <= degradation_upper):
                # 计算变化量绝对值
                delta = abs(next_val - current_val)
                if delta > variable:
                    results.append(f"{column_name}突变故障")
                    faults.append(f"{column_name}突变故障")
                    is_fault_detected = True
                    break  # 发现故障后立即终止循环

        if is_fault_detected:
            continue  # 跳过后续判断

        # 退化判断逻辑
        if ((col_data > normal_upper) & (col_data <= degradation_upper)).any():
            results.append(f"{column_name}偏大")
            degradations.append(column_name)
            continue

        if ((col_data >= degradation_lower) & (col_data < normal_lower)).any():
            results.append(f"{column_name}偏小")
            degradations.append(f"{column_name}偏小")

    return {"results": results, "fault": faults, "degradation": degradations}


if __name__ == '__main__':
    # data_url = "http://169.254.117.72:9090/profile/upload/2025/05/16/排气原始数据_20250516140130A009.csv"
    # response = requests.get(data_url)
    # response.encoding = 'UTF-8'
    # csv_data = StringIO(response.text)
    csv_data = "D:\project\daima\huang\Hang_KG\data\排气原始数据.csv"
    dataframe = pd.read_csv(csv_data, index_col=False, encoding='UTF-8')
    result = check_abnormal_headers(dataframe)
    resa = analyze_excel_data(dataframe)
    fault = resa["fault"]
    for i in fault:
        result.append(i)

    results = {
        "code": 200,
        "msg": "操作成功",
        "data": {
            "score": 58,
            "fault": result,
            "degradation": resa["degradation"]
        }
    }
    print(results)