import json
import os.path
import traceback

import requests
from flask import request, jsonify
from flask_restx import Resource, Namespace, reqparse

from app.defines import StatesCode
from app.mission_jobs.application import Application
from app.utils.create_geojsonl import verify_geotiff
from config import Config
from starearth.utils.general_utils import print_log

config = Config()
ns = Namespace('mission', description='任务管理 API接口')

slice_mission_parser = reqparse.RequestParser(bundle_errors=True)
slice_mission_parser.add_argument(name='title', type=str, location='form', required=False, help='dms 标题')
slice_mission_parser.add_argument(name='content', type=str, location='form', required=False, help='dms 描述')
slice_mission_parser.add_argument(name='c_name', type=str, location='form', required=False, help='dms 名称')
slice_mission_parser.add_argument(name='c_content', type=str, location='form', required=False, help='dms 描述')
slice_mission_parser.add_argument(name='c_note', type=str, location='form', required=False, help='dms 备注')

slice_mission_parser.add_argument(name='data_path', type=str, location='form', required=False, help='数据目录')
slice_mission_parser.add_argument(name='tile_size', type=int, location='form', required=False, help='瓦片大小')
slice_mission_parser.add_argument(name='tile_format', type=str, location='form', required=False,
                                  help='瓦片格式：png、jpeg、tif')
slice_mission_parser.add_argument(name='auto_zoom', type=int, location='form', required=False,
                                  help='是否自动切片,0:否，1:是')
slice_mission_parser.add_argument(name='epsg', type=str, location='form', required=False, help='投影信息：EPSG：4326、EPSG：3857')
slice_mission_parser.add_argument(name='min_zoom', type=int, location='form', required=False, help='最小切片层级')
slice_mission_parser.add_argument(name='max_zoom', type=int, location='form', required=False, help='最大切片层级')


@ns.route('/mission_slice_api')
class MissionAPI(Resource):

    @ns.doc(id='slice', description='切片')
    @ns.expect(slice_mission_parser)
    def post(self):
        """添加任务"""
        try:
            form = request.form

            # dms
            title = form.get('title')
            content = form.get('content')
            c_name = form.get('c_name')
            c_content = form.get('c_content')
            c_note = form.get('c_note')

            data_path = form.get('data_path')
            tile_size = int(form.get('tile_size', 256))
            tile_grid = form.get('tile_grid', 'WebMercatorQuad')
            tile_format = form.get('tile_format', 'png')
            auto_zoom = int(form.get('auto_zoom', 1))
            epsg = form.get('epsg', 'EPSG:4326')
            min_zoom = int(form.get('min_zoom', 1))
            max_zoom = int(form.get('max_zoom', 19))

            if not data_path:
                return jsonify(code=StatesCode.PARA_ERROR, message='输入路径错误')

            file_list = []
            for file in os.listdir(data_path):
                if file.endswith('.tif'):
                    file_list.append(file)

            if not file_list:
                return jsonify(code=StatesCode.PARA_ERROR, message='路径无有效文件')

            err_file = []
            # 验证数据有错误数据直接返回错误数据
            for file_name in os.listdir(data_path):
                input_file = os.path.join(data_path, file_name)
                if os.path.splitext(file_name)[-1] == ".tif":
                    try:
                        verify_geotiff(input_file, epsg)
                    except Exception:
                        err_file.append(file_name)

            if err_file:
                return jsonify(code=StatesCode.PARA_ERROR, message='输入文件错误：{},不支持的投影'.format(err_file))

            output_path = os.path.join(config.common.OUTPUT_PATH, os.path.basename(data_path))
            dms_params = {
                'title': title,
                'content': content,
                'c_name': c_name,
                'c_content': c_content,
                'c_note': c_note
            }
            application = Application(config)
            application.new_mission(
                dms_params=dms_params,
                data_path=data_path,
                output_path=output_path,
                tile_size=tile_size,
                tile_grid=tile_grid,
                tile_format=tile_format,
                epsg=epsg,
                auto_zoom=auto_zoom,
                min_zoom=min_zoom,
                max_zoom=max_zoom,
            )

            return {"code": StatesCode.SUCCESS,
                    "message": "开始切片预计需要%s分钟，请耐心等待" % str(len(os.listdir(data_path)) * 8)}

        except Exception as err:

            traceback.print_exc()

            return {"code": StatesCode.UNKNOWN_ERROR, "message": str(err)}