package mmHa

import (
	"encoding/json"
	"github.com/MickMake/GoUnify/Only"
	"strings"
)

const LabelNumber = "number"


func (m *Mqtt) NumberPublishConfig(config EntityConfig) error {

	for range Only.Once {
		if !config.IsNumber() {
			break
		}

		ok, newDevice := m.NewDevice(config)
		if !ok {
			break
		}

		id := JoinStringsForId(m.DeviceName, config.FullId)

		payload := Number {
			Device:       newDevice,
			Name:         String(JoinStrings(m.DeviceName, config.Name)),
			// StateTopic:   JoinStringsForTopic(m.switchPrefix, id, "state"),
			CommandTopic: String(JoinStringsForTopic(m.Prefix, LabelNumber, m.ClientId, id, "cmd")),
			ObjectId:     String(id),
			UniqueId:     String(id),
			Qos:          0,
			Retain:       true,

			// PayloadOn:     "true",
			// PayloadOff:    "false",
			// StateOn:       "true",
			// StateOff:      "false",
			// ValueTemplate: config.ValueTemplate,
			Icon:          Icon(config.Icon),
		}

		tag := JoinStringsForTopic(m.Prefix, LabelNumber, m.ClientId, id, "config")
		m.err = m.Publish(tag, 0, true, payload.Json())
	}

	return m.err
}

func (m *Mqtt) NumberPublishValue(config EntityConfig) error {

	for range Only.Once {
		if !config.IsNumber() {
			break
		}

		if config.IgnoreUpdate {
			break
		}

		id := JoinStringsForId(m.DeviceName, config.FullId)
		tag := JoinStringsForTopic(m.Prefix, LabelNumber, m.ClientId, id, "state")

		value := config.Value.String()
		if value == "--" {
			value = ""
		}

		// @TODO - Real hack here. Need to properly check for JSON.
		if strings.Contains(value, `{`) || strings.Contains(value, `":`) {
			m.err = m.Publish(tag, 0, true, value)
			break
		}

		payload := MqttState {
			LastReset: config.LastReset, // m.GetLastReset(config.FullId),
			Value:     value,
		}
		m.err = m.Publish(tag, 0, true, payload.Json())
	}

	return m.err
}

type Number struct {
	// A list of MQTT topics subscribed to receive availability (online/offline) updates. Must not be used together with availability_topic.
	Availability *Availability `json:"availability,omitempty"`

	// The MQTT topic subscribed to receive availability (online/offline) updates. Must not be used together with availability.
	AvailabilityTopic String `json:"availability_topic,omitempty"`

	// When availability is configured, this controls the conditions needed to set the entity to available. Valid entries are all, any, and latest. If set to all, payload_available must be received on all configured availability topics before the entity is marked as online. If set to any, payload_available must be received on at least one configured availability topic before the entity is marked as online. If set to latest, the last payload_available or payload_not_available received on any configured availability topic controls the availability.
	AvailabilityMode String `json:"availability_mode,omitempty" default:"latest"`

	// Defines a template to generate the payload to send to command_topic.
	CommandTemplate Template `json:"command_template,omitempty"`

	// The MQTT topic to publish commands to change the number.
	CommandTopic String `json:"command_topic,omitempty" required:"true"`

	// Information about the device this Number is a part of to tie it into the device registry. Only works through MQTT discovery and when unique_id is set. At least one of identifiers or connections must be present to identify the device.
	Device Device `json:"device,omitempty"`

	// The type/class of the number.
	DeviceClass DeviceClass `json:"device_class,omitempty" default:"None"`

	// Flag which defines if the entity should be enabled when first added.
	EnabledByDefault Boolean `json:"enabled_by_default,omitempty" default:"true"`

	// The encoding of the payloads received and published messages. Set to "" to disable decoding of incoming payload.
	Encoding String `json:"encoding,omitempty" default:"utf"`

	// The category of the entity.
	EntityCategory String `json:"entity_category,omitempty" default:"None"`

	// Icon for the entity.
	Icon Icon `json:"icon,omitempty"`

	// Defines a template to extract the JSON dictionary from messages received on the json_attributes_topic.
	JsonAttributesTemplate Template `json:"json_attributes_template,omitempty"`

	// The MQTT topic subscribed to receive a JSON dictionary payload and then set as number attributes. Implies force_update of the current number state when a message is received on this topic.
	JsonAttributesTopic String `json:"json_attributes_topic,omitempty"`

	// Minimum value.
	Min Float `json:"min,omitempty" default:"1"`

	// Maximum value.
	Max Float `json:"max,omitempty" default:"100"`

	// Control how the number should be displayed in the UI. Can be set to box or slider to force a display mode.
	Mode String `json:"mode,omitempty"(optional, default: “auto”)`

	// The name of the Number.
	Name String `json:"name,omitempty"`

	// Used instead of name for automatic generation of entity_id
	ObjectId String `json:"object_id,omitempty"`

	// Flag that defines if number works in optimistic mode.
	Optimistic Boolean `json:"optimistic,omitempty"`

	// Default: true if no state_topic defined, else false.
	// A special payload that resets the state to None when received on the state_topic.
	PayloadReset String `json:"payload_reset,omitempty"(optional, default: “None”)`

	// The maximum QoS level of the state topic. Default is 0 and will also be used to publishing messages.
	Qos Integer `json:"qos,omitempty" default:"0"`

	// If the published message should have the retain flag on or not.
	Retain Boolean `json:"retain,omitempty" default:"false"`

	// The MQTT topic subscribed to receive number values.
	StateTopic String `json:"state_topic,omitempty"`

	// Step value. Smallest value 0.001.
	Step Float `json:"step,omitempty" default:"1"`

	// An ID that uniquely identifies this Number. If two Numbers have the same unique ID Home Assistant will raise an exception.
	UniqueId String `json:"unique_id,omitempty"`

	// Defines the unit of measurement of the sensor, if any.
	UnitOfMeasurement String `json:"unit_of_measurement,omitempty"`

	// Defines a template to extract the value.
	ValueTemplate Template `json:"value_template,omitempty"`
}


func (c *Number) Json() string {
	j, _ := json.Marshal(*c)
	return string(j)
}

func (config *EntityConfig) IsNumber() bool {
	var ok bool

	for range Only.Once {
		if config.Units == LabelNumber {
			ok = true
			break
		}
	}

	return ok
}