Bot handlers: clock‑in/out, remote flag, day‑off toggle, daily report, monthly Excel export

internal/bot/totals.go

@@ -0,0 +1,80 @@
+package bot
+
+import (
+	"sort"
+
+	"worktimeBot/internal/db"
+)
+
+type State int
+
+const (
+	StateIdle State = iota
+	StateWorking
+	StateOnBreak
+)
+
+// DailyTotals holds aggregated times for a single day.
+type DailyTotals struct {
+	TotalSeconds int64
+	BreakSeconds int64
+	PairCount    int
+}
+
+// ComputeDailyTotals pairs events with break inference.
+// Multi‑out sequences: first out ends work, second out starts break,
+// next in ends break, next out ends work, etc.
+func ComputeDailyTotals(events []db.Event) DailyTotals {
+	if len(events) == 0 {
+		return DailyTotals{}
+	}
+	sorted := make([]db.Event, len(events))
+	copy(sorted, events)
+	sort.Slice(sorted, func(i, j int) bool {
+		return sorted[i].OccurredAt < sorted[j].OccurredAt
+	})
+
+	var workTotal, breakTotal int64
+	var workStart, breakStart int64
+	pairs := 0
+	state := StateIdle
+
+	for _, e := range sorted {
+		switch {
+		case e.EventType == "in":
+			switch state {
+			case StateIdle, StateOnBreak:
+				if state == StateOnBreak {
+					breakTotal += e.OccurredAt - breakStart
+					breakStart = 0
+				}
+				workStart = e.OccurredAt
+				state = StateWorking
+			// Working → ignore duplicate in (shouldn't happen)
+			case StateWorking:
+				// already working, ignore
+			}
+		case e.EventType == "out":
+			switch state {
+			case StateWorking:
+				// End of work period
+				workTotal += e.OccurredAt - workStart
+				workStart = 0
+				pairs++
+				state = StateIdle
+			case StateIdle:
+				// Second consecutive out → break start
+				breakStart = e.OccurredAt
+				state = StateOnBreak
+			case StateOnBreak:
+				// Duplicate break start – ignore
+			}
+		}
+	}
+
+	return DailyTotals{
+		TotalSeconds: workTotal,
+		BreakSeconds: breakTotal,
+		PairCount:    pairs,
+	}
+}