from typing import Dict,List,Any
import json,os

class Record:
    def __init__(self,datas:Dict[str,Any]) -> None:
        self._datas:Dict[str,Any] = datas

    def value(self,key:str):
        if key in self._datas:
            return self._datas.get(key)
        return ''

class Field:
    def __init__(self,datas:Dict[str,Any]) -> None:
        self._datas:Dict[str,Any] = datas

    def value(self,key:str):
        if key in self._datas:
            return self._datas.get(key)
        return ''

class JsonTable:
    def __init__(self,filePth:str) -> None:
        self._filePth = filePth
        self._fields:Dict[str,Field] = {}
        self._records:List[Record] = []
        self._fileName = os.path.splitext(os.path.basename(filePth))[0]
        self._name = ''
        self._comment = ''

    def parse(self):
        with open(self._filePth, 'r',encoding='utf-8') as file:
            jsObj = json.load(file)
            data:dict = jsObj.get('table')
            self._name = data.get('name')
            self._comment = data.get('comment')
            Jsfields = data.get('fields')
            for jsfiled in Jsfields:
                field = Field(jsfiled)
                self._fields[field.value('name')] =field

            JsRecords = data.get('records')
            for jsRecord in JsRecords:
                self._records.append(Record(jsRecord))

    def records(self):
        return self._records
    
    def fields(self):
        return self._fields
    
    def name(self):
        return self._fileName
    
    def comment(self):
        return self._comment


class ProjectJson:
    def __init__(self,dir:str) -> None:
        self._dir = dir
        self._tables:Dict[str,JsonTable] = {}

    def parse(self):
        json_files = [f for f in os.listdir(self._dir) if f.endswith('.json')]
        for json_file in json_files:
            prjPath = os.path.join(self._dir, json_file)
            tb = JsonTable(prjPath)
            tb.parse()
            basename = os.path.splitext(json_file)[0]
            self._tables[basename] = tb

    def table(self,tableName:str):
        return self._tables[tableName]
    
    def tables(self):
        return self._tables

def getProjectName(dir:str):
    prjJson = ProjectJson(dir)
    prjJson.parse()
    tb:JsonTable = prjJson.table('工程属性')
    records = tb.records()
    for record in records:
        name = record.value('名称') 
        if name == '工程名称':
            return record.value('值') 
    return ''