/Electronics/JunctionBox.foocad

import uk.co.nickthecoder.foocad.threaded.v2.*
import uk.co.nickthecoder.foocad.screws.v3.*
import uk.co.nickthecoder.foocad.smartextrusion.v1.*
import static uk.co.nickthecoder.foocad.smartextrusion.v1.SmartExtrusion.*
import uk.co.nickthecoder.foocad.cup.v1.*
import static uk.co.nickthecoder.foocad.cup.v1.Cup.*

class JunctionBox : Model {

    @Custom( about="Overall size of the case (not including the thickness of the lid)" )
    var size = Vector3( 70, 50, 14 )

    @Custom( about="Thickness of the walls" )
    var thickness = 1.8

    @Custom( about="Thickness of the bottom and the lid" )
    var baseThickness = 1.0

    @Custom( about="Thickness and height of the lip (which aligns the lid with the box)" )
    var lipSize = Vector2( 1.8, 2 )

    @Custom( about="Gap for the cable (in its relaxed state). Set smaller than the cable's diameter." )
    var gripWidth = 2

    @Custom( about="Width and height of the opening. See gripWidth" )
    var openingSize = Vector2(18,6)

    @Custom( about="2..4" )
    var openingCount = 3

    @Custom( about="Clearance which makes pieces fit together easily" )
    var clearance = 0.2



    meth shape() : Shape2d = Square( size.x, size.y ).center()
        .roundAllCorners(5)

    meth lump( height : double ) : Shape3d {
        return Square( 10 ).center()
            .roundAllCorners(2)
            .smartExtrude( height )
                .top( Chamfer(0.5) )
    }

    @Piece
    meth box() : Shape3d {
        val box = shape().cup( size.z, thickness )
            .baseThickness( baseThickness )

        val lumpHeight = size.z - baseThickness - lipSize.y - clearance
        val lump = lump( lumpHeight )
            .bottomTo( baseThickness )

        val leftLump = lump.leftTo( box.left )
        val sideLumps = leftLump.mirrorX().also()

        val centerHole = Thread.woodScrew(1)
            .threadedHole(lump.top)

        val sideHoles = Circle(2)
            .extrude( size.z + 0.02 )
            .centerXTo( box.left + lump.size.x / 2 + lipSize.x + clearance )
            .bottomTo(-0.01)
            .mirrorX().also()

        val slot = Cube( openingSize.x + thickness * 2, thickness + 2, size.z )
            .frontTo(box.front-1)
            .centerXTo( (size.x-6)/4 )
            .bottomTo( baseThickness )

        val frontSlots = if (openingCount > 2 ) {
            slot.mirrorX().also()
        } else {
            slot
        }

        val backSlots = if (openingCount > 3 ) {
            slot.mirrorY().mirrorX().also()
        } else {
            slot.mirrorY()
        }

        return box + lump + sideLumps - centerHole - sideHoles - frontSlots - backSlots
    }

    @Piece
    meth cableGrip() : Shape3d {

        val plainShape = Square( openingSize.x + 10, thickness * 3 + clearance *2 )
            .center()
            .roundAllCorners(1)

        val cutoutShape = Square( 5 - thickness + clearance*2, thickness + clearance )
            .centerY().leftTo( plainShape.left - 0.01 )
        val shape = (plainShape - cutoutShape.mirrorX().also())

        val solid = shape
            .smartExtrude( size.z - baseThickness )
                .top( Chamfer(0.5) )

        val removeTop = Square( plainShape.size.x + 2, plainShape.size.y )
            .extrude( solid.size.z )
            .centerX()
            .frontTo( thickness/2 )
            .bottomTo( solid.top - lipSize.y - clearance )
            
        val removeBack = Square( openingSize.x, solid.size.y ).centerX()
            .frontTo( solid.front + thickness*2 )
            .extrude( solid.size.z )
            .bottomTo(-0.02)

        val hole = Square( openingSize.x, plainShape.size.y + 2 )
            .center()
            .extrude( solid.size.z )
            .bottomTo( thickness )
    
        val gripLength = (openingSize.x - gripWidth)/2 / Math.sin( 40/180 * Math.PI )    
        val grips = Square( thickness, gripLength )
            .extrude( openingSize.y + thickness )
            .rotateZ(40)
            .frontTo( solid.front )
            .translateX( openingSize.x/2 )
            .mirrorX().also()
        val gripMinus = Cube( openingSize.x, thickness*2 + 1, thickness + 1 )
            .centerX()
            .frontTo( solid.front)
            .bottomTo(-0.01)

        return solid - hole - removeTop - removeBack + (grips - gripMinus)
        
    }

    @Piece
    meth lid() : Shape3d {
        val base = shape()
            .smartExtrude( baseThickness )
            .bottom( Chamfer(0.5) )

        val lipShape = shape().offset( -thickness - clearance )
        val lip = (lipShape - lipShape.offset( -lipSize.x ))
            .smartExtrude( lipSize.y )
                .outsideTop( Chamfer(0.5) )
            .bottomTo( base.top )

        val lump = lump( lipSize.y )
            .bottomTo( base.top )

        val leftLump = lump.leftTo( lip.left )
        val sideLumps = leftLump.mirrorX().also()

        val sideHoles = Countersink().mirrorZ()
            .centerXTo( leftLump.middle.x )
            .mirrorX().also()

        val centerHole = Countersink(4,6).mirrorZ()

        val opening = Square( openingSize.x-clearance*2, thickness )
            .frontTo( base.front )
            .centerXTo( -(size.x-6)/4 )
            .extrude( size.z - openingSize.y - thickness - baseThickness - clearance )
            .bottomTo( base.top )

        val backOpening = if (openingCount > 2 ) {
            opening.mirrorX().also()
        } else {
            opening
        }

        val frontOpening = if (openingCount > 3 ) {
            opening.mirrorY().mirrorX().also()
        } else {
            opening.mirrorY()
        }
        return base + lip + lump + sideLumps - sideHoles - centerHole +
            frontOpening + backOpening
    }

    override fun build() : Shape3d {
        val box = box().color("Green")

        val lid = lid().rotateY(180).topTo( box.top + baseThickness + 0 )

        val grip = cableGrip()
            .bottomTo( baseThickness + 0.01 )
            .centerXTo( (size.x-6) / 4 )
            .frontTo( box.front - thickness - clearance )
            .color("Orange")

        return box + grip + lid 
    }

}