import json
from datetime import datetime

import pandas as pd
from PyQt5.QtCore import Qt, QRect
from PyQt5.QtWidgets import QWidget, QVBoxLayout, QGridLayout, QLineEdit, QLabel, QHBoxLayout, QPushButton, QFileDialog, \
    QScrollArea, QPlainTextEdit, QMessageBox

from core.context import AppContext
from widget.task_run import TaskRunDialog


class TaskListWidget(QWidget):
    def __init__(self, parent=None):
        super(TaskListWidget, self).__init__(parent)
        self.ratio = AppContext.get_ratio()
        self.run_dialog = None

        scroll_area = QScrollArea()
        scroll_area.setStyleSheet("border: none;")
        scroll_area.setWidgetResizable(True)
        scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        scroll_area.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)

        self.content_widget = QWidget()

        scroll_area.setWidget(self.content_widget)

        widget = QWidget()
        widget_layout = QVBoxLayout(widget)
        widget_layout.setContentsMargins(10, 10, 10, 10)
        widget_layout.setSpacing(0)
        widget_layout.addWidget(scroll_area)

        layout = QVBoxLayout(self)
        layout.setContentsMargins(0, 0, 0, 0)
        layout.setSpacing(0)
        layout.addWidget(widget)

        self.init_ui()

        AppContext.get_edge_context().get_component('dat_task').signals.on_receive_task.connect(self.init_ui)

    def init_ui(self):
        task_table = AppContext.get_edge_context().get_component("dat_task")
        tasks = task_table.list_task(1)
        if len(tasks) == 0:
            return
        self.content_widget.children().clear()
        # 添加 TITLE
        x = 0
        y = 0
        offset = 10
        x = x + offset
        y = y + offset
        label_name = QLabel(self.content_widget)
        label_name.setObjectName("THeader")
        label_name.setText("任务名称")
        label_name.setGeometry(QRect(x, y, 200, 30))
        x = x + 200 + offset
        label_sn = QLabel(self.content_widget)
        label_sn.setObjectName("THeader")
        label_sn.setText("设备序列号")
        label_sn.setGeometry(QRect(x, y, 150, 30))
        x = x + 150 + offset
        label_param = QLabel(self.content_widget)
        label_param.setObjectName("THeader")
        label_param.setText("参数")
        label_param.setGeometry(QRect(x, y, 400, 30))
        x = x + 400 + offset
        label_start = QLabel(self.content_widget)
        label_start.setObjectName("THeader")
        label_start.setText("开始时间")
        label_start.setGeometry(QRect(x, y, 150, 30))
        x = x + 150 + offset
        label_end = QLabel(self.content_widget)
        label_end.setObjectName("THeader")
        label_end.setText("结束时间")
        label_end.setGeometry(QRect(x, y, 150, 30))
        x = x + 150 + offset
        label_create = QLabel(self.content_widget)
        label_create.setObjectName("THeader")
        label_create.setText("创建时间")
        label_create.setGeometry(QRect(x, y, 150, 30))
        x = x + 150 + offset
        label_action = QLabel(self.content_widget)
        label_action.setObjectName("THeader")
        label_action.setText("操作")
        label_action.setGeometry(QRect(x, y, 200, 30))

        y = y + 30 + offset
        for i in range(10):
            x = offset
            task = tasks[0]
            label_name = QLabel(self.content_widget)
            label_name.setText(task[1])
            label_name.setGeometry(QRect(x, y, 200, 30))
            x = x + 200 + offset
            label_sn = QLabel(self.content_widget)
            label_sn.setText(task[2])
            label_sn.setGeometry(QRect(x, y, 150, 30))
            x = x + 150 + offset
            param = QPlainTextEdit(self.content_widget)
            param.setPlainText(task[3])
            param.setReadOnly(True)
            param.setGeometry(QRect(x, y, 400, 120))
            x = x + 400 + offset
            label_start = QLabel(self.content_widget)
            label_start.setText(task[6])
            label_start.setGeometry(QRect(x, y, 150, 30))
            x = x + 150 + offset
            label_end = QLabel(self.content_widget)
            label_end.setText(task[7])
            label_end.setGeometry(QRect(x, y, 150, 30))
            x = x + 150 + offset
            label_create = QLabel(self.content_widget)
            label_create.setText(task[8])
            label_create.setGeometry(QRect(x, y, 150, 30))
            x = x + 150 + offset
            run_task = QPushButton(self.content_widget)
            run_task.setStyleSheet("background-color: #3A36DB;")
            run_task.setObjectName("run_task")
            run_task.setText("开始任务")
            run_task.setGeometry(QRect(x, y, 120, 30))
            run_task.clicked.connect(lambda: self.start_task(task))

            y = y + 120 + offset

        self.content_widget.setFixedHeight(y + offset)

        for ctl in self.content_widget.children():
            if isinstance(ctl, QWidget):
                ctl.setVisible(True)

    def start_task(self, task):
        task_table = AppContext.get_edge_context().get_component("dat_task")
        task_table.update_task({ "id": task[0], "state": 1, "start_time": datetime.now() })
        try:
            param_json = json.loads(task[3])
            self.run_dialog = TaskRunDialog(param_json)
            dialog_result = self.run_dialog.exec_()
            if dialog_result == 0:
                c = 0
                # self.name_text.setText(None)
                # self.file_content.setPlainText(None)
        except Exception as e:
            QMessageBox.warning(self, 'JSON Error', f'Invalid JSON: {e}')