package game

import "testing"

// badcheck from init.c: every probability table must sum to exactly 100.
func TestProbabilitiesSumTo100(t *testing.T) {
	sum := func(info []ObjInfo) int {
		s := 0
		for _, oi := range info {
			s += oi.Prob
		}
		return s
	}
	tables := map[string][]ObjInfo{
		"things":  baseThings[:],
		"potions": basePotInfo[:],
		"scrolls": baseScrInfo[:],
		"rings":   baseRingInfo[:],
		"sticks":  baseWsInfo[:],
		"weapons": baseWeapInfo[:NumWeaponTypes], // excludes the flame entry
		"armor":   baseArmInfo[:],
	}
	for name, tab := range tables {
		if s := sum(tab); s != 100 {
			t.Errorf("bad percentages for %s: sum = %d, want 100", name, s)
		}
	}
}

func TestInitProbsCumulative(t *testing.T) {
	g := NewGame(Config{Seed: 1})
	last := g.Items.Potions[NumPotionTypes-1].Prob
	if last != 100 {
		t.Errorf("cumulative potion probability ends at %d, want 100", last)
	}
	for i := PotionKind(1); i < NumPotionTypes; i++ {
		if g.Items.Potions[i].Prob < g.Items.Potions[i-1].Prob {
			t.Errorf("potion probs not nondecreasing at %d", i)
		}
	}
}

func TestNewGameRandomizesAppearances(t *testing.T) {
	g := NewGame(Config{Seed: 12345})
	seen := map[string]bool{}
	for i, c := range g.Items.PotColors {
		if c == "" {
			t.Fatalf("potion %d has no color", i)
		}
		if seen[c] {
			t.Errorf("potion color %q assigned twice", c)
		}
		seen[c] = true
	}
	for i, n := range g.Items.ScrNames {
		if n == "" {
			t.Fatalf("scroll %d has no name", i)
		}
		if len(n) > MaxNameLen+1 {
			t.Errorf("scroll name %q longer than C buffer allows", n)
		}
	}
	for i := range g.Items.WandType {
		if g.Items.WandType[i] != "wand" && g.Items.WandType[i] != "staff" {
			t.Errorf("stick %d has type %q", i, g.Items.WandType[i])
		}
		if g.Items.WandMade[i] == "" {
			t.Errorf("stick %d has no material", i)
		}
	}

	// Determinism: same seed, same appearances.
	h := NewGame(Config{Seed: 12345})
	if h.Items != g.Items {
		t.Error("two games with the same seed produced different item lore")
	}
}

func TestMonsterTable(t *testing.T) {
	if monsterTable[0].Name != "aquator" || monsterTable[25].Name != "zombie" {
		t.Error("monster table order broken")
	}
	if monsterTable['D'-'A'].Name != "dragon" {
		t.Error("letter indexing broken")
	}
}