import os
from typing import Dict, List
from jinja2 import Template
import yaml

sysPath = os.getcwd()
tempPath = f"{sysPath}/pkg/structure/generate"
structurePath = f"{sysPath}/pkg/structure"
protobufPath = f"{sysPath}/protobuf"

def to_camel(val: str) -> str:
    return "".join([k.capitalize() for k in val.split('_')])

def load_conf():
    conf_path = f"{tempPath}/tem.yaml"
    with open(conf_path, 'r', encoding='utf-8') as f:
        cfg = f.read()

    cfg = yaml.load(cfg)

    cfg_camel = {}

    for key, val in cfg.items():
        key = to_camel(key).lower()
        cfg_camel[key] = [to_camel(v) for v in val]

    return cfg, cfg_camel


# 生成文件,并写入
def mkdir(cfg_camel):
    path = "protobuf"
    storagePath = f"{protobufPath}/storage.proto"
    for key,value in cfg_camel.items():
        '''生成、更新数据结构proto文件'''
        proto_path = path + '/' + key + '.proto'
        if not os.path.exists(proto_path):   # 如果这个文件不存在
            '''生成对应的数据结构proto文件'''
            file = open(proto_path,'w')
            file.write('syntax = "proto3";\nimport "base.proto";\noption go_package = "pkg/proto";\n')
            for v in value:
                file.write('\nmessage ' + v +'Request '+'{\n\tBaseKey key = 1;\n}')
            file.close()
            '''给strong.proto添加import该新的数据结构'''
            import_structure = 'import "'+ key +'.proto";\n'
            mess = 'message CommendResponse {\n'
            with open(storagePath) as f:
                line = f.readlines()
#             print(line)
            f.close
            for i in range(len(line)):
                if mess in line[i]:
                    break
            line.insert(i,import_structure)
            file = open(storagePath,'w')
            for l in line:
                file.write(l)
            file.close()
            i=0
            for i in range(len(line)-1,0,-1):
                if '}' in line[i]:
                    break
            for v in value:
                line.insert(i,'\trpc '+ v +' ('+ v +'Request) returns (CommendResponse);\n')
            file = open(storagePath,'w')
            for l in line:
                file.write(l)
            file.close()


        else:  # 如果这个文件存在
            with open(proto_path) as f:
              line = f.readlines()
            f.close()
            for v in value:
                function = v + 'Request'
                flag = 0
                for l in line:
                    if function in l:
                        flag=1
                        break
                if flag == 0:
                    file = open(proto_path,'a')
                    file.write('\nmessage ' + v +'Request '+'{\n\tBaseKey key = 1;\n}')
                    file.close()
                flag = 0
            '''更新storage.proto文件'''
            with open(storagePath) as f:
                line = f.readlines()
            f.close
            for v in value:
                flg=0
                for l in range(len(line)):
                    if '\trpc '+ v +' ('+ v +'Request) returns (CommendResponse);\n' in line[l]:
                        flg = 1
                        break
                if flg==0:
                    i=0
                    for i in range(len(line)-1,0,-1):
                        if '}' in line[i]:
                            break
                    line.insert(i,'\trpc '+ v +' ('+ v +'Request) returns (CommendResponse);\n')
                    i=0
            file = open(storagePath,'w')
            for l in line:
                file.write(l)
            file.close()


if __name__ == "__main__":
    conf, cfg_camel = load_conf()
    print(cfg_camel)
    mkdir(cfg_camel)