package config

import "testing"

func TestLayoutDimensions(t *testing.T) {
	good := map[string][2]int{"2x2": {2, 2}, "3X3": {3, 3}, " 4x2 ": {4, 2}, "1x1": {1, 1}}
	for grid, want := range good {
		l := Layout{Name: "t", Grid: grid}
		c, r, err := l.Dimensions()
		if err != nil {
			t.Fatalf("grid %q: unexpected error %v", grid, err)
		}
		if c != want[0] || r != want[1] {
			t.Errorf("grid %q: got %dx%d want %dx%d", grid, c, r, want[0], want[1])
		}
	}
	for _, bad := range []string{"", "2", "2x", "x2", "0x2", "axb"} {
		if _, _, err := (Layout{Name: "t", Grid: bad}).Dimensions(); err == nil {
			t.Errorf("grid %q: expected error", bad)
		}
	}
}

func TestValidateRejectsUnknownCameraRef(t *testing.T) {
	c := &Config{
		Cameras: []Camera{{Name: "front"}},
		Layouts: []Layout{{Name: "l", Grid: "2x2", Slots: []string{"front", "missing", "", ""}}},
	}
	c.Defaults()
	if err := c.Validate(); err == nil {
		t.Fatal("expected validation error for unknown camera reference")
	}
}

func TestValidateRejectsTooManySlots(t *testing.T) {
	c := &Config{Layouts: []Layout{{Name: "l", Grid: "1x1", Slots: []string{"", ""}}}}
	c.Defaults()
	if err := c.Validate(); err == nil {
		t.Fatal("expected validation error for slot overflow")
	}
}