# -*- coding: utf-8 -*-
"""
***************************************************************************
    postgisrestore.py
    ---------------------
    Date                 : November 2012
    Copyright            : (C) 2012 by Victor Olaya
    Email                : volayaf at gmail dot com
***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************
"""

__author__ = 'wanger'
__date__ = 'November 2024'
__copyright__ = '(C) 2024, wanger'

import os
from osgeo import ogr, gdal
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QApplication
from future.moves import sys

from qgis.PyQt import QtWidgets
from qgis.core import (QgsProcessing,
                       QgsProcessingParameterFeatureSource,
                       QgsProcessingParameterString,
                       QgsProcessingParameterFile,
                       QgsProcessingParameterDateTime,
                       QgsProcessingParameterEnum,
                       QgsProcessingParameterCrs,
                       QgsProcessingParameterField,
                       QgsProcessingParameterExtent,
                       QgsProcessingParameterBoolean,
                       QgsProcessingParameterProviderConnection,
                       QgsProcessingParameterDatabaseSchema,
                       QgsProcessingParameterDatabaseTable,
                       QgsProviderRegistry,
                       QgsProcessingException,
                       QgsProcessingParameterDefinition,
                       QgsProviderConnectionException,
                       QgsDataSourceUri)

from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.tools.PrintUtils import printStr
from processing.tools.StringUtils import getConnectionStr
from processing.tools.GeoServer.Geoserver import Geoserver
from processing.tools.PostgreSQL.PostgreSQL import PostgreSQL
from processing.tools.Login.Redis import Redis

from processing.tools.system import isWindows

pluginPath = os.path.normpath(os.path.join(
    os.path.split(os.path.dirname(__file__))[0], os.pardir))
gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "YES")
gdal.SetConfigOption("SHAPE_ENCODING", "GBK")


class Postgisrestore(GdalAlgorithm):
    LOGIN_USER = "admin"
    UPDATEFILE = 'UPDATEFILE'
    RESTORETABLE = 'RESTORETABLE'
    RESTOREVERSION = 'RESTOREVERSION'
    CURVERSION = "CURVERSION"
    ALLOWOVERLAP = "ALLOWOVERLAP"
    DATABASE = 'DATABASE'
    INPUTFILE = 'INPUTFILE'
    SCHEMA = 'SCHEMA'
    TABLE = 'TABLE'
    HOST = 'HOST'
    DBNAME = 'DBNAME'
    PORT = 'PORT'
    USER = 'USER'
    PASSWORD = 'PASSWORD'
    selectedValue = "selectedValue"
    tables = []
    checklogs = []

    def __init__(self):
        super().__init__()

    def initAlgorithm(self, config=None):
        pgconn = PostgreSQL(schema='base')
        self.tables = pgconn.getManagerTables(username=self.LOGIN_USER)
        tablenames = []
        for row in self.tables:
            tablenames.append(row[2])
        self.addParameter(QgsProcessingParameterEnum(name=self.RESTORETABLE,
                                                     description=self.tr('目标数据源'),
                                                     options=tablenames))
        redis = Redis()
        tablename = redis.get("curRestoreTable")
        print(tablename)
        if tablename is not None:
            tablename = tablename.decode('utf-8')
            versions = pgconn.getTableVersions(tablename=tablename)
            curversion = pgconn.getTableCurVersion(tablename=tablename)
            tableversion_param = QgsProcessingParameterString(
                self.CURVERSION,
                self.tr('当前版本号'), defaultValue=curversion)
            self.addParameter(tableversion_param)
            self.versionlist = []
            for row in versions:
                self.versionlist.append(row[0])
            self.addParameter(QgsProcessingParameterEnum(name=self.RESTOREVERSION,
                                                         description=self.tr('目标版本'),
                                                         options=self.versionlist))

        pgconn.close()

    def name(self):
        return 'postgisrestore'

    def icon(self):
        return QIcon(os.path.join(pluginPath, 'images', 'dbms', 'restore.png'))

    def displayName(self):
        return self.tr('版本回退')

    def shortDescription(self):
        return self.tr('回退数据库版本')

    def tags(self):
        t = self.tr('import,into,postgis,database,vector').split(',')
        t.extend(super().tags())
        return t

    def group(self):
        return self.tr('数据更新维护')

    def groupId(self):
        return 'updatedata'

    def setSelectedValue(self, v):
        printStr(v)
        self.selectedValue = v

    def getSelectedValue(self):
        return self.selectedValue

    def restoreVector(self, parameters, context, feedback, executing=True):
        print("版本回退开始啦")
        pgconn = PostgreSQL(schema='base')
        tableinfo = self.tables[parameters[self.RESTORETABLE]]
        tablename = tableinfo[1]
        # 判断回退版本关系
        curversion = parameters[self.CURVERSION]
        targetversion = self.versionlist[parameters[self.RESTOREVERSION]]
        message = "版本回退成功"
        if curversion == targetversion:
            message = "版本相同不需要操作"
        elif curversion > targetversion:
            print("需要删除近期版本更新的数据")
            pgconn.deleteVectorRecords(tablename=tablename, rksj_sw=targetversion)
        else:
            pgconn.insertVectorRecords(tablename=tablename, curversion=curversion, targetversion=targetversion)
            print("需要插入近期版本更新的数据")
        # print("===========备份表===========")
        # pgconn.restoreBackTable(tablename=tablename)
        pgconn.close()
        return {
            "状态": message
        }

    # 判断数据是否为字符串
    def is_string(self, var):
        return isinstance(var, str)

    def getConsoleCommands(self, parameters, context, feedback, executing=True):
        return []

    def contains_keys(self, obj, keys):
        if isinstance(obj, dict):
            return all(key in obj.keys() for key in keys)
        elif hasattr(type(obj), '__dict__'):
            return all(key in obj.__dict__ for key in keys)
        else:
            raise ValueError("Invalid object type")

    def commandName(self):
        return "ogr2ogr"