# -*- coding:utf-8 -*-
"""
DolphinScheduler API 客户端最小封装。

职责：
- 读 conf/ds.ini 拿 base_url + token
- requests.Session 注入 token header
- 通用 get / post，2xx 返回 json，非 2xx 抛 RuntimeError
- 不预封任何具体 endpoint，调用方按需拼 path
"""
import os
from configparser import ConfigParser
from typing import Any, Dict, Optional

import requests


_PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
_DEFAULT_CONF_PATH = os.path.join(_PROJECT_ROOT, 'conf', 'ds.ini')


class DSClient:
    def __init__(self, conf_path: Optional[str] = None):
        path = conf_path or _DEFAULT_CONF_PATH
        if not os.path.isfile(path):
            raise RuntimeError('DS 配置文件不存在：' + path)
        cp = ConfigParser()
        cp.read(path, encoding='utf-8')
        self.base_url = cp.get('dolphinscheduler', 'base_url').rstrip('/')
        self.token = cp.get('dolphinscheduler', 'token')
        self.session = requests.Session()
        self.session.headers['token'] = self.token

    def _url(self, path: str) -> str:
        return self.base_url + '/' + path.lstrip('/')

    def get(self, path: str, params: Optional[Dict[str, Any]] = None) -> Any:
        resp = self.session.get(self._url(path), params=params)
        if resp.status_code // 100 != 2:
            raise RuntimeError('GET {} failed rc={}: {}'.format(
                path, resp.status_code, resp.text))
        try:
            return resp.json()
        except ValueError:
            raise RuntimeError('GET {} 返回非 JSON（可能 path 错被 SPA fallback）: {}'.format(
                path, resp.text[:200]))

    def post(self, path: str, json_body: Optional[Dict[str, Any]] = None,
             form_data: Optional[Dict[str, Any]] = None) -> Any:
        if json_body is not None and form_data is not None:
            raise ValueError('json_body 与 form_data 互斥')
        if form_data is not None:
            resp = self.session.post(self._url(path), data=form_data)
        else:
            resp = self.session.post(self._url(path), json=json_body)
        if resp.status_code // 100 != 2:
            raise RuntimeError('POST {} failed rc={}: {}'.format(
                path, resp.status_code, resp.text))
        try:
            return resp.json()
        except ValueError:
            raise RuntimeError('POST {} 返回非 JSON（可能 path 错被 SPA fallback）: {}'.format(
                path, resp.text[:200]))