package common

import (
	"testing"
	"time"
)

func TestEvaluateInactiveUserExpire(t *testing.T) {
	now := time.Date(2026, 5, 27, 8, 0, 0, 0, time.UTC)
	params := promoRuleParams{InactiveMonths: 3}

	tests := []struct {
		name       string
		lastExpire time.Time
		want       bool
	}{
		{
			name:       "permanent subscription is not inactive",
			lastExpire: time.UnixMilli(0),
			want:       false,
		},
		{
			name:       "active subscription is not inactive",
			lastExpire: now.Add(time.Hour),
			want:       false,
		},
		{
			name:       "expire at threshold is inactive",
			lastExpire: now.AddDate(0, -3, 0),
			want:       true,
		},
		{
			name:       "expire before threshold is inactive",
			lastExpire: now.AddDate(0, -3, -1),
			want:       true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := evaluateInactiveUserExpire(tt.lastExpire, params, now); got != tt.want {
				t.Fatalf("evaluateInactiveUserExpire() = %v, want %v", got, tt.want)
			}
		})
	}
}