# Copyright (c) 2019 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.

from PyQt5.QtCore import pyqtSignal, pyqtProperty, QObject, QVariant, pyqtSlot, QUrl
from typing import List, Dict, Optional, TYPE_CHECKING
from UM.Math.Vector import Vector
from cura.PrinterOutput.Peripheral import Peripheral
from cura.PrinterOutput.Models.PrinterConfigurationModel import PrinterConfigurationModel
from cura.PrinterOutput.Models.ExtruderOutputModel import ExtruderOutputModel
from UM.Logger import Logger

if TYPE_CHECKING:
    from cura.PrinterOutput.Models.PrintJobOutputModel import PrintJobOutputModel
    from cura.PrinterOutput.PrinterOutputController import PrinterOutputController


class PrinterOutputModel(QObject):
    bedTemperatureChanged = pyqtSignal()
    targetBedTemperatureChanged = pyqtSignal()
    isPreheatingChanged = pyqtSignal()
    stateChanged = pyqtSignal()
    activePrintJobChanged = pyqtSignal()
    nameChanged = pyqtSignal()
    headPositionChanged = pyqtSignal()
    keyChanged = pyqtSignal()
    typeChanged = pyqtSignal()
    buildplateChanged = pyqtSignal()
    cameraUrlChanged = pyqtSignal()
    configurationChanged = pyqtSignal()
    canUpdateFirmwareChanged = pyqtSignal()

    def __init__(self, output_controller: "PrinterOutputController", number_of_extruders: int = 1, parent=None, firmware_version = "") -> None:
        super().__init__(parent)
        self._bed_temperature = -1  # type: float  # Use -1 for no heated bed.
        self._target_bed_temperature = 0 # type: float
        self._name = ""
        self._key = ""  # Unique identifier
        self._unique_name = ""  # Unique name (used in Connect)
        self._controller = output_controller
        self._controller.canUpdateFirmwareChanged.connect(self._onControllerCanUpdateFirmwareChanged)
        self._extruders = [ExtruderOutputModel(printer = self, position = i) for i in range(number_of_extruders)]
        self._active_printer_configuration = PrinterConfigurationModel()  # Indicates the current configuration setup in this printer
        self._head_position = Vector(0, 0, 0)
        self._active_print_job = None  # type: Optional[PrintJobOutputModel]
        self._firmware_version = firmware_version
        self._printer_state = "unknown"
        self._is_preheating = False
        self._printer_type = ""
        self._buildplate = ""
        self._peripherals = []  # type: List[Peripheral]

        self._active_printer_configuration.extruderConfigurations = [extruder.extruderConfiguration for extruder in
                                                                     self._extruders]
        self._active_printer_configuration.configurationChanged.connect(self.configurationChanged)
        self._available_printer_configurations = []  # type: List[PrinterConfigurationModel]

        self._camera_url = QUrl()  # type: QUrl

    @pyqtProperty(str, constant = True)
    def firmwareVersion(self) -> str:
        return self._firmware_version

    def setCameraUrl(self, camera_url: "QUrl") -> None:
        if self._camera_url != camera_url:
            self._camera_url = camera_url
            self.cameraUrlChanged.emit()

    @pyqtProperty(QUrl, fset = setCameraUrl, notify = cameraUrlChanged)
    def cameraUrl(self) -> "QUrl":
        return self._camera_url

    def updateIsPreheating(self, pre_heating: bool) -> None:
        if self._is_preheating != pre_heating:
            self._is_preheating = pre_heating
            self.isPreheatingChanged.emit()

    @pyqtProperty(bool, notify=isPreheatingChanged)
    def isPreheating(self) -> bool:
        return self._is_preheating

    @pyqtProperty(str, notify = typeChanged)
    def type(self) -> str:
        return self._printer_type

    def updateType(self, printer_type: str) -> None:
        if self._printer_type != printer_type:
            self._printer_type = printer_type
            self._active_printer_configuration.printerType = self._printer_type
            self.typeChanged.emit()
            self.configurationChanged.emit()

    @pyqtProperty(str, notify = buildplateChanged)
    def buildplate(self) -> str:
        return self._buildplate

    def updateBuildplate(self, buildplate: str) -> None:
        if self._buildplate != buildplate:
            self._buildplate = buildplate
            self._active_printer_configuration.buildplateConfiguration = self._buildplate
            self.buildplateChanged.emit()
            self.configurationChanged.emit()

    @pyqtProperty(str, notify=keyChanged)
    def key(self) -> str:
        return self._key

    def updateKey(self, key: str) -> None:
        if self._key != key:
            self._key = key
            self.keyChanged.emit()

    @pyqtSlot()
    def homeHead(self) -> None:
        self._controller.homeHead(self)

    @pyqtSlot()
    def homeBed(self) -> None:
        self._controller.homeBed(self)

    @pyqtSlot(str)
    def sendRawCommand(self, command: str) -> None:
        self._controller.sendRawCommand(self, command)

    @pyqtProperty("QVariantList", constant = True)
    def extruders(self) -> List["ExtruderOutputModel"]:
        return self._extruders

    @pyqtProperty(QVariant, notify = headPositionChanged)
    def headPosition(self) -> Dict[str, float]:
        return {"x": self._head_position.x, "y": self._head_position.y, "z": self.head_position.z}

    def updateHeadPosition(self, x: float, y: float, z: float) -> None:
        if self._head_position.x != x or self._head_position.y != y or self._head_position.z != z:
            self._head_position = Vector(x, y, z)
            self.headPositionChanged.emit()

    @pyqtProperty(float, float, float)
    @pyqtProperty(float, float, float, float)
    def setHeadPosition(self, x: float, y: float, z: float, speed: float = 3000) -> None:
        self.updateHeadPosition(x, y, z)
        self._controller.setHeadPosition(self, x, y, z, speed)

    @pyqtProperty(float)
    @pyqtProperty(float, float)
    def setHeadX(self, x: float, speed: float = 3000) -> None:
        self.updateHeadPosition(x, self._head_position.y, self._head_position.z)
        self._controller.setHeadPosition(self, x, self._head_position.y, self._head_position.z, speed)

    @pyqtProperty(float)
    @pyqtProperty(float, float)
    def setHeadY(self, y: float, speed: float = 3000) -> None:
        self.updateHeadPosition(self._head_position.x, y, self._head_position.z)
        self._controller.setHeadPosition(self, self._head_position.x, y, self._head_position.z, speed)

    @pyqtProperty(float)
    @pyqtProperty(float, float)
    def setHeadZ(self, z: float, speed:float = 3000) -> None:
        self.updateHeadPosition(self._head_position.x, self._head_position.y, z)
        self._controller.setHeadPosition(self, self._head_position.x, self._head_position.y, z, speed)

    @pyqtSlot(float, float, float)
    @pyqtSlot(float, float, float, float)
    def moveHead(self, x: float = 0, y: float = 0, z: float = 0, speed: float = 3000) -> None:
        self._controller.moveHead(self, x, y, z, speed)

    @pyqtSlot(float, float)
    def preheatBed(self, temperature: float, duration: float) -> None:
        """Pre-heats the heated bed of the printer.

        :param temperature: The temperature to heat the bed to, in degrees
            Celsius.
        :param duration: How long the bed should stay warm, in seconds.
        """

        self._controller.preheatBed(self, temperature, duration)

    @pyqtSlot()
    def cancelPreheatBed(self) -> None:
        self._controller.cancelPreheatBed(self)

    def getController(self) -> "PrinterOutputController":
        return self._controller

    @pyqtProperty(str, notify = nameChanged)
    def name(self) -> str:
        return self._name

    def setName(self, name: str) -> None:
        self.updateName(name)

    def updateName(self, name: str) -> None:
        if self._name != name:
            self._name = name
            self.nameChanged.emit()

    @pyqtProperty(str, notify = nameChanged)
    def uniqueName(self) -> str:
        return self._unique_name

    def updateUniqueName(self, unique_name: str) -> None:
        if self._unique_name != unique_name:
            self._unique_name = unique_name
            self.nameChanged.emit()

    def updateBedTemperature(self, temperature: float) -> None:
        """Update the bed temperature. This only changes it locally."""

        if self._bed_temperature != temperature:
            self._bed_temperature = temperature
            self.bedTemperatureChanged.emit()

    def updateTargetBedTemperature(self, temperature: float) -> None:
        if self._target_bed_temperature != temperature:
            self._target_bed_temperature = temperature
            self.targetBedTemperatureChanged.emit()

    @pyqtSlot(float)
    def setTargetBedTemperature(self, temperature: float) -> None:
        """Set the target bed temperature. This ensures that it's actually sent to the remote."""

        self._controller.setTargetBedTemperature(self, temperature)
        self.updateTargetBedTemperature(temperature)

    def updateActivePrintJob(self, print_job: Optional["PrintJobOutputModel"]) -> None:
        if self._active_print_job != print_job:
            old_print_job = self._active_print_job

            if print_job is not None:
                print_job.updateAssignedPrinter(self)
            self._active_print_job = print_job

            if old_print_job is not None:
                old_print_job.updateAssignedPrinter(None)
            self.activePrintJobChanged.emit()

    def updateState(self, printer_state: str) -> None:
        if self._printer_state != printer_state:
            self._printer_state = printer_state
            self.stateChanged.emit()

    @pyqtProperty(QObject, notify = activePrintJobChanged)
    def activePrintJob(self) -> Optional["PrintJobOutputModel"]:
        return self._active_print_job

    @pyqtProperty(str, notify = stateChanged)
    def state(self) -> str:
        return self._printer_state

    @pyqtProperty(float, notify = bedTemperatureChanged)
    def bedTemperature(self) -> float:
        return self._bed_temperature

    @pyqtProperty(float, notify = targetBedTemperatureChanged)
    def targetBedTemperature(self) -> float:
        return self._target_bed_temperature

    # Does the printer support pre-heating the bed at all
    @pyqtProperty(bool, constant = True)
    def canPreHeatBed(self) -> bool:
        if self._controller:
            return self._controller.can_pre_heat_bed
        return False

    # Does the printer support pre-heating the bed at all
    @pyqtProperty(bool, constant = True)
    def canPreHeatHotends(self) -> bool:
        if self._controller:
            return self._controller.can_pre_heat_hotends
        return False

    # Does the printer support sending raw G-code at all
    @pyqtProperty(bool, constant = True)
    def canSendRawGcode(self) -> bool:
        if self._controller:
            return self._controller.can_send_raw_gcode
        return False

    # Does the printer support pause at all
    @pyqtProperty(bool, constant = True)
    def canPause(self) -> bool:
        if self._controller:
            return self._controller.can_pause
        return False

    # Does the printer support abort at all
    @pyqtProperty(bool, constant = True)
    def canAbort(self) -> bool:
        if self._controller:
            return self._controller.can_abort
        return False

    # Does the printer support manual control at all
    @pyqtProperty(bool, constant = True)
    def canControlManually(self) -> bool:
        if self._controller:
            return self._controller.can_control_manually
        return False

    # Does the printer support upgrading firmware
    @pyqtProperty(bool, notify = canUpdateFirmwareChanged)
    def canUpdateFirmware(self) -> bool:
        if self._controller:
            return self._controller.can_update_firmware
        return False

    # Stub to connect UM.Signal to pyqtSignal
    def _onControllerCanUpdateFirmwareChanged(self) -> None:
        self.canUpdateFirmwareChanged.emit()

    # Returns the active configuration (material, variant and buildplate) of the current printer
    @pyqtProperty(QObject, notify = configurationChanged)
    def printerConfiguration(self) -> Optional[PrinterConfigurationModel]:
        if self._active_printer_configuration.isValid():
            return self._active_printer_configuration
        return None

    peripheralsChanged = pyqtSignal()

    @pyqtProperty(str, notify = peripheralsChanged)
    def peripherals(self) -> str:
        return ", ".join([peripheral.name for peripheral in self._peripherals])

    def addPeripheral(self, peripheral: Peripheral) -> None:
        self._peripherals.append(peripheral)
        self.peripheralsChanged.emit()

    def removePeripheral(self, peripheral: Peripheral) -> None:
        self._peripherals.remove(peripheral)
        self.peripheralsChanged.emit()

    availableConfigurationsChanged = pyqtSignal()

    # The availableConfigurations are configuration options that a printer can switch to, but doesn't currently have
    # active (eg; Automatic tool changes, material loaders, etc).
    @pyqtProperty("QVariantList", notify = availableConfigurationsChanged)
    def availableConfigurations(self) -> List[PrinterConfigurationModel]:
        return self._available_printer_configurations

    def addAvailableConfiguration(self, new_configuration: PrinterConfigurationModel) -> None:
        if new_configuration not in self._available_printer_configurations:
            self._available_printer_configurations.append(new_configuration)
            self.availableConfigurationsChanged.emit()

    def removeAvailableConfiguration(self, config_to_remove: PrinterConfigurationModel) -> None:
        try:
            self._available_printer_configurations.remove(config_to_remove)
        except ValueError:
            Logger.log("w", "Unable to remove configuration that isn't in the list of available configurations")
        else:
            self.availableConfigurationsChanged.emit()

    def setAvailableConfigurations(self, new_configurations: List[PrinterConfigurationModel]) -> None:
        self._available_printer_configurations = new_configurations
        self.availableConfigurationsChanged.emit()