package signinreward

import "testing"

func TestNormalizeSaveDays(t *testing.T) {
	validDays := []SignInRewardDayConfigInput{
		{DayIndex: 7, GoldAmount: 70},
		{DayIndex: 1, GoldAmount: 10},
		{DayIndex: 3, GoldAmount: 30},
		{DayIndex: 2, GoldAmount: 20},
		{DayIndex: 4, GoldAmount: 40},
		{DayIndex: 5, GoldAmount: 50},
		{DayIndex: 6, GoldAmount: 60},
	}

	normalized, err := normalizeSaveDays(validDays, true)
	if err != nil {
		t.Fatalf("normalizeSaveDays() error = %v", err)
	}
	for index, item := range normalized {
		expectedDay := index + 1
		if item.DayIndex != expectedDay {
			t.Fatalf("normalized[%d].DayIndex = %d, want %d", index, item.DayIndex, expectedDay)
		}
	}

	t.Run("enabled config rejects empty reward day", func(t *testing.T) {
		days := append([]SignInRewardDayConfigInput(nil), validDays...)
		days[0].GoldAmount = 0
		if _, err := normalizeSaveDays(days, true); err == nil {
			t.Fatalf("normalizeSaveDays() error = nil, want error")
		}
	})

	t.Run("disabled config allows empty reward day", func(t *testing.T) {
		days := append([]SignInRewardDayConfigInput(nil), validDays...)
		days[0].GoldAmount = 0
		if _, err := normalizeSaveDays(days, false); err != nil {
			t.Fatalf("normalizeSaveDays() error = %v, want nil", err)
		}
	})
}

func TestSignInRewardCycleHelpers(t *testing.T) {
	testCases := []struct {
		streak        int
		nextDayIndex  int
		cycleProgress int
	}{
		{streak: 0, nextDayIndex: 1, cycleProgress: 0},
		{streak: 1, nextDayIndex: 2, cycleProgress: 1},
		{streak: 6, nextDayIndex: 7, cycleProgress: 6},
		{streak: 7, nextDayIndex: 1, cycleProgress: 7},
		{streak: 8, nextDayIndex: 2, cycleProgress: 1},
		{streak: 14, nextDayIndex: 1, cycleProgress: 7},
	}

	for _, testCase := range testCases {
		if got := nextSignInRewardDayIndex(testCase.streak); got != testCase.nextDayIndex {
			t.Fatalf("nextSignInRewardDayIndex(%d) = %d, want %d", testCase.streak, got, testCase.nextDayIndex)
		}
		if got := streakToCycleProgress(testCase.streak); got != testCase.cycleProgress {
			t.Fatalf("streakToCycleProgress(%d) = %d, want %d", testCase.streak, got, testCase.cycleProgress)
		}
	}
}