from build123d import *

# --- Facade panel ---
PANEL = 1.5       # plate thickness (Cherry MX standard ~1.5 mm)
OLED_GLASS_X = 27
OLED_GLASS_Y = 19.5
OLED_GLASS_IN = 1.0

# --- Component footprints ---
SW_SIZE  = 14.0   # Cherry MX plate cutout (square)
SW_PITCH = 19.0   # switch centre-to-centre
N_SW     = 3

OLED_W = 25.0     # 0.96" SSD1306 visible window width
OLED_H = 13.0     # visible window height

# --- OLED alignment pegs (solid 2 mm, 24 mm square pattern) ---
POST_D         = 2.0    # peg diameter
POST_SPACING_X = 23.0   # hole centre-to-centre
POST_SPACING_Y = 23.6
POST_OFFSET    = 4.35  # offset between hole and screen
POST_H         = 3.0   # peg length behind panel

inner_w = OLED_W + 25
inner_h = OLED_H + 25
inner_z = 22.5

oled_x  = 0
oled_y  = 0

with BuildPart() as case:
    with Locations((0, 0, PANEL/2)):
        Box(inner_w+2*PANEL, inner_h+2*PANEL, PANEL)

    with BuildSketch(Plane.XY):
        with Locations((oled_x, oled_y)):
            Rectangle(OLED_W, OLED_H)
    extrude(amount=PANEL, mode=Mode.SUBTRACT)

    with BuildSketch(Plane.XY.offset(PANEL-OLED_GLASS_IN)):
        with Locations((oled_x, oled_y+POST_OFFSET/2)):
            Rectangle(OLED_GLASS_X, OLED_GLASS_Y)
    extrude(amount=OLED_GLASS_IN, mode=Mode.SUBTRACT)

    with Locations((0, inner_h/2+PANEL/2, inner_z/2+PANEL)):
        Box(inner_w+2*PANEL, PANEL, inner_z+2*PANEL)

    with Locations((0, -inner_h/2-PANEL/2, inner_z/2+PANEL)):
        Box(inner_w+2*PANEL, PANEL, inner_z+2*PANEL)

    with BuildSketch(Plane.XZ.offset(-inner_h/2)):
        with Locations((-SW_PITCH/2, PANEL+inner_z/2), (SW_PITCH/2, PANEL+inner_z/2)):
            RectangleRounded(SW_SIZE, SW_SIZE, 0.3)
    extrude(amount=-PANEL, mode=Mode.SUBTRACT)

    with Locations((-inner_w/2-PANEL/2, 0, inner_z/2+PANEL)):
        Box(PANEL, inner_h+2*PANEL, inner_z+2*PANEL)

    with Locations((inner_w/2+PANEL/2, 0, inner_z/2+PANEL)):
        Box(PANEL, inner_h+2*PANEL, inner_z+2*PANEL)

    with BuildSketch(Plane.YZ.offset(-inner_w/2)):
        with Locations((-SW_PITCH/2, PANEL+inner_z/2), (SW_PITCH/2, PANEL+inner_z/2)):
            RectangleRounded(SW_SIZE, SW_SIZE, 0.3)
    extrude(amount=-PANEL, mode=Mode.SUBTRACT)


    # Solid 2 mm alignment pegs extending from the back face
    half_x = POST_SPACING_X / 2
    half_y = POST_SPACING_Y / 2
    post_xy = [
        (-half_x, half_y + POST_OFFSET/2),
        ( half_x,-half_y + POST_OFFSET/2),
        (-half_x,-half_y + POST_OFFSET/2),
        ( half_x, half_y + POST_OFFSET/2),
    ]
    with Locations([(x + oled_x, y + oled_y, POST_H/2 + PANEL) for x, y in post_xy]):
        Cylinder(POST_D / 2, POST_H)

export_stl(case.part, "case.stl")

try:
    from ocp_vscode import show
    show(case)
except Exception:
    pass