"""Broken stone arch and the castle facade."""
from brickagent import (Assembly, UP, check, view, measure, spin, parts,
                        connections, clashes)
from lib import Build, BRICKS, BRICKS1, PLATES

STONE = 'dark bluish gray'; STONE2 = 'light bluish gray'; STONE3 = 'dark tan'


def broken_arch():
    """A ruined arch 10 studs wide, 2 deep, on y=0; both piers carry the arch,
    the wall above it has crumbled away to the right."""
    a = Assembly('broken arch'); b = Build(a)
    for n, y in enumerate((-24, -48, -72, -96, -120, -144)):
        c = STONE if n % 2 else STONE2
        b.slab(0, 3, 0, 2, y, c, shift=(1 if n % 2 else 0))        # left pier
        b.slab(7, 3, 0, 2, y, c, shift=(1 if n % 2 else 0))        # right pier
    for k in (0, 1):                                               # arch over the opening
        b.putb('6183', 2, k, -144, 6, 1, color=STONE2)
    b.slab(0, 2, 0, 2, -168, STONE, stagger=True)                  # haunches beside the arch
    b.slab(8, 2, 0, 2, -168, STONE, stagger=True)
    b.slab(0, 2, 0, 2, -192, STONE2)
    b.put('3005', 8, 0, -192, 1, 1, color=STONE2)                  # jagged right stub
    b.put('3005', 9, 1, -192, 1, 1, color=STONE3)
    b.slab(0, 6, 0, 2, -216, STONE, stagger=True)                  # course over the arch
    b.slab(0, 4, 0, 2, -240, STONE2)
    b.put('3004', 0, 0, -264, 2, 1, color=STONE)
    b.put('3005', 0, 1, -264, 1, 1, color=STONE3)
    b.put('3005', 2, 0, -264, 1, 1, color=STONE2)
    b.putb('3040b', 1, 1, -240, 2, 1, rot=90, color=STONE2)
    return a, b


def castle(n=14):
    """Castle facade n studs long, 2 deep, facing +Z; doorway at studs 3..10."""
    a = Assembly('castle'); b = Build(a)
    b.slab(0, n, 0, 2, -24, STONE)
    for k in (0, 1):
        b.putb('30528', 3, k, -24, 8, 1, color=STONE2)             # arch 1x8x6
    for m, y in enumerate((-48, -72, -96, -120, -144, -168)):
        c = STONE if m % 2 else STONE2
        b.slab(0, 3, 0, 2, y, c, shift=(1 if m % 2 else 0))
        b.slab(11, 3, 0, 2, y, c, shift=(1 if m % 2 else 0))
    b.slab(0, n, 0, 2, -192, STONE2, shift=2)                      # lintel courses
    b.slab(0, n, 0, 2, -216, STONE, shift=0)
    for i in range(4, 10, 2):                                      # battlements
        b.put('3005', i, 0, -240, 1, 1, color=STONE2)
        b.put('3005', i, 1, -240, 1, 1, color=STONE2)
    for i in (0, 11):                                              # flanking towers
        for m, y in enumerate((-240, -264, -288)):
            b.slab(i, 3, 0, 2, y, STONE if m % 2 else STONE2)
        for j in (i, i + 2):
            b.put('3005', j, 0, -312, 1, 1, color=STONE2)
            b.put('3005', j, 1, -312, 1, 1, color=STONE2)
    return a, b


if __name__ == '__main__':
    for name, fn in (('arch', broken_arch), ('castle', castle)):
        d, b = fn()
        ps = parts(d)
        print(name, 'parts', len(ps), [tuple(round(v) for v in p) for p in measure(d)])
        try:
            check(d, stability=False); print(' CHECK ok')
        except Exception as e:
            print(' CHECK', str(e)[:200])
        print(' components', [len(c) for c in connections(d).components])
        for c in sorted(connections(d).components, key=len, reverse=True)[:4]:
            xs=[ps[i].pos for i in c]
            print('   comp', len(c), 'x', round(min(p[0] for p in xs)), round(max(p[0] for p in xs)),
                  'y', round(min(p[1] for p in xs)), round(max(p[1] for p in xs)))
        for pair in clashes(d)[:6]:
            print('  clash', [(ps[i].stem, tuple(round(v) for v in ps[i].pos)) for i in pair])
        view(d, f'{name}.png', az=25, el=12)