package rpc

import (
	"encoding/json"
	"time"

	"src.dualinventive.com/go/dinet/ditime"
)

// ResultValueItem represents a single DI-Net RPC message result item
type ResultValueItem struct {
	UID    uint16            `json:"uid" msgpack:"uid"`       // UID represents the sensor,notify Unique ID
	Time   ditime.Time       `json:"time" msgpack:"time"`     // Time stamp of value
	Value  interface{}       `json:"value" msgpack:"value"`   // Value
	Values *ResultValuesItem `json:"values" msgpack:"values"` // Values
}

// ResultValuesItem represents multiple samples with a interval
type ResultValuesItem struct {
	Interval time.Duration `json:"interval" msgpack:"interval"`
	Samples  []float64     `json:"samples" msgpack:"samples"`
}

// UnmarshalJSON unmarshals a byte slice to a ResultValueItem
func (rvi *ResultValueItem) UnmarshalJSON(b []byte) error {
	type alias ResultValueItem
	r := &alias{}
	r.Value = &json.RawMessage{}

	if err := json.Unmarshal(b, r); err != nil {
		return err
	}
	*rvi = ResultValueItem(*r)
	return nil
}

// GetValue unmarshals the value property into the provided argument
func (rvi *ResultValueItem) GetValue(v interface{}) error {
	if rm, ok := rvi.Value.(*json.RawMessage); ok {
		return json.Unmarshal(*rm, v)
	}
	return ErrMsgNoData
}

// ResultInfoItem represents a single DI-Net RPC message info item
type ResultInfoItem struct {
	UID   uint16         `json:"uid" msgpack:"uid"`                       // UID represents the sensor,notify Unique ID
	Label string         `json:"label" msgpack:"label"`                   // Label is the human-readable label
	Type  string         `json:"type" msgpack:"type"`                     // Type is the type of this item
	Enum  map[string]int `json:"enum,omitempty" msgpack:"enum,omitempty"` // Enumeration when type is "enum"
}

// ResultConfigValueItem represents a single DI-Net RPC config message result item
type ResultConfigValueItem struct {
	UID   uint16      `json:"uid" msgpack:"uid"`     // UID represents the config Unique ID
	Value interface{} `json:"value" msgpack:"value"` // Value
}

// ResultConfigInfoItem represents a single DI-Net RPC config message info item
type ResultConfigInfoItem struct {
	UID     uint16      `json:"uid" msgpack:"uid"`         // UID represents the sensor,notify Unique ID
	Label   string      `json:"label" msgpack:"label"`     // Label is the human-readable label
	Type    string      `json:"type" msgpack:"type"`       // Type is the type of this item
	Default interface{} `json:"default" msgpack:"default"` // Default is the default value of this
	// configuration and is set after a config:reset
}