rename non-camel-case vars, refactor, satisfy linter

input.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 )
 
-// An input (keyboard, mouse, whatever)
+// Input represents an input (keyboard, mouse, whatever)
 type Input struct {
 	Identifier           string    `json:"identifier"`
 	Name                 string    `json:"name"`
@@ -19,7 +19,7 @@ type Input struct {
 	Libinput             *LibInput `json:"libinput"`
 }
 
-// Holds the data associated with libinput
+// LibInput stores the data associated with libinput
 type LibInput struct {
 	SendEvents        string    `json:"send_events"`
 	Tap               string    `json:"tap"`
@@ -41,7 +41,7 @@ type LibInput struct {
 	CalibrationMatrix []float32 `json:"calibration_matrix"`
 }
 
-// A key binding
+// Binding is a key binding
 type Binding struct {
 	Command        string   `json:"command"`
 	EventStateMask []string `json:"event_state_mask"`
@@ -50,9 +50,9 @@ type Binding struct {
 	InputType      string   `json:"input_type"`
 }
 
-// Get a list of all currently supported inputs
+// GetInputs returns a list of all currently supported inputs
 func (ipc *SwayIPC) GetInputs() ([]*Input, error) {
-	payload, err := ipc.get(GET_INPUTS)
+	payload, err := ipc.get(MsgGetInputs)
 	if err != nil {
 		return nil, err
 	}