#!/usr/bin/env
# -*- coding: utf-8 -*-
import os
import sys
import math
import argparse
from qgis.core import *
from qgis.gui import *
from qgis.PyQt.QtGui import *
from qgis.PyQt.QtCore import *
from qgis.PyQt.QtWidgets import *
from qgis.PyQt.QtXml import *


# 获取完整路径
def get_full_path():
    return os.path.split(sys.argv[0])[0]


# 获取参数
def get_args():
    print("argv = ", sys.argv[1:])
    parser = argparse.ArgumentParser(description='ArgUtils')
    parser.add_argument("-src", type=str, default=get_full_path(), required=False)
    parser.add_argument("-qgz", type=str, default="Moon.qgz", required=False)
    parser.add_argument("-qpt", type=str, default="Moon.qpt", required=False)

    return parser.parse_args()


# 设置图层可用性
def set_layers_valid(prj, show_layers):
    for layer in prj.mapLayers().values():
        flag = layer.name() in show_layers
        print(layer.name() + ": " + str(flag))
        # if not flag:
        # prj.removeMapLayer(layer)
        layer.setValid(flag)


# 设置图层可见性
def set_item_visibility(root_node, show_layers):
    print(root_node.name() + ': Group')
    for node in root_node.children():
        # QgsLayerTreeLayer
        if isinstance(node, QgsLayerTreeGroup):
            set_item_visibility(node, show_layers)
        # QgsRasterLayer, QgsVectorLayer
        else:
            name = node.layer().name()
            flag = name in showLayers
            print(name + ": " + str(flag))
            # if not flag:
            # root_node.removeLayer(node.layer())
            # node.layer().setValid(False)
            node.setItemVisibilityChecked(flag)


# 添加底图：layer.isValid()，layer.metadataUri()，layer.providerType()
def add_map_layer(prj, layout, args):
    uris = layout.customProperty("wmsUrl").split(',')
    for uri in uris:
        if uri is None:
            continue
        url = "crs=ESRI:104903&dpiMode=7&format=image/png&layers=Default&styles=default&tileMatrixSet=GoogleCRS84Quad01&url=" + uri
        print("WMS地址：" + url)

        layer = QgsRasterLayer(url, "WmsLayer", "wms")
        prj.addMapLayer(layer)


# 初始化
# QgsApplication.setPrefixPath(r"E:/terrait/TianJin/LFServer/QGIS/", True)
qgs = QgsApplication([], False)
qgs.initQgis()

# 加载工程
args = get_args()
prj = QgsProject.instance()
# prj.read(r'Test.qgz')
prj.read(os.path.join(args.src, args.qgz))
print("FileName: " + prj.fileName())

# layout = QgsPrintLayout(prj)
layout = QgsLayout(prj)
# layout.initializeDefaults()

# 加载模板
# with open(r'Test.qpt', 'r', encoding='utf-8') as f:
with open(os.path.join(args.src, args.qpt), 'r', encoding='utf-8') as f:
    template_content = f.read()
doc = QDomDocument()
doc.setContent(template_content)
layout.loadFromTemplate(doc, QgsReadWriteContext(), True)

# map = layout.itemById(r'地图')
map = layout.referenceMap()
map.zoomToExtent(map.extent())
scale = '1:' + str(math.ceil(map.scale() / 100) * 100)
print(scale)

# template_content = template_content.replace('1：25万', scale)
# doc.setContent(template_content)
# layout.loadFromTemplate(doc, QgsReadWriteContext(), True)
# map = layout.referenceMap()
# map.zoomToExtent(map.extent())

size = map.sizeWithUnits()
print('size: ' + str(size.width()) + " * " + str(size.height()) + " mm")
if size.width() > 280 or size.height() > 174:
    map.attemptResize(QgsLayoutSize(280, 174, QgsUnitTypes.LayoutMillimeters))
    print('size: ' + str(map.sizeWithUnits().width()) + " * " + str(map.sizeWithUnits().height()) + " mm")

# 设置图层
# "阀室", "站场", "管道中心线", "矢量注记", "矢量图", "高德影像注记", "高德影像", "影像注记", "影像图"
# showLayers = ["阀室", "管道中心线", "矢量注记", "矢量图"]
showLayers = layout.customProperty("layers").split(',')
root = prj.layerTreeRoot()

# set_layers_valid(prj, showLayers)
set_item_visibility(root, showLayers)
add_map_layer(prj, layout, args)

# sm = layout.itemById(r'说明')
'''table = layout.multiFrames()[0]
contents = table.tableContents()
contents[1][1] = scale
table.refreshAttributes()
table.refresh()'''

# collection = layout.pageCollection()
# page = collection.page(0)
# page.refreshItemSize()

# 刷新
map.refresh()
# layout.updateBounds()
layout.renderContext()
layout.refresh()

# 导出
exporter = QgsLayoutExporter(layout)
# img_path = os.path.join(r"E:/terrait/TianJin/LFServer/QGIS", "render.png")
img_path = layout.customProperty("imgPath")
exporter.exportToImage(img_path, QgsLayoutExporter.ImageExportSettings())

# 退出
qgs.exitQgis()