Big Refactor (#2)

Refactor Everything.

Co-authored-by: Anna Rose Wiggins <annabunches@gmail.com>
Co-committed-by: Anna Rose Wiggins <annabunches@gmail.com>

internal/mappingrules/mapping_rule_axis_to_button.go

@@ -0,0 +1,51 @@
+package mappingrules
+
+import (
+	"time"
+
+	"github.com/holoplot/go-evdev"
+)
+
+// TODO: This whole file is still WIP
+type MappingRuleAxisToButton struct {
+	MappingRuleBase
+	Input          *RuleTargetAxis
+	Output         *RuleTargetButton
+	RepeatSpeedMin int32
+	RepeatSpeedMax int32
+	lastValue      int32
+	lastEvent      time.Time
+}
+
+func (rule *MappingRuleAxisToButton) MatchEvent(device *evdev.InputDevice, event *evdev.InputEvent, mode *string) (*evdev.InputDevice, *evdev.InputEvent) {
+	if !rule.MappingRuleBase.modeCheck(mode) ||
+		!rule.Input.MatchEvent(device, event) {
+		return nil, nil
+	}
+
+	// set the last value to the normalized input value
+	rule.lastValue = rule.Input.NormalizeValue(event.Value)
+	return nil, nil
+}
+
+// TimerEvent returns an event when enough time has passed (compared to the last recorded axis value)
+// to emit an event.
+func (rule *MappingRuleAxisToButton) TimerEvent() *evdev.InputEvent {
+	// This is tighter coupling than we'd like, but it will do for now.
+	// TODO: maybe it would be better to just be more declarative about event types and their inputs and outputs.
+	if rule.lastValue < rule.Input.DeadzoneStart {
+		rule.lastEvent = time.Now()
+		return nil
+	}
+
+	// calculate target time until next event press
+	//	nextEvent := rule.LastEvent + (rule.LastValue)
+
+	// TODO: figure out what the condition should be
+	if false {
+		// TODO: emit event
+		rule.lastEvent = time.Now()
+	}
+
+	return nil
+}