import sys
import ezdxf
import math

minx = 10000000000000
miny = 10000000000000
maxx = 0
maxy = 0

if len(sys.argv) > 0:
    skala = int(sys.argv[1])
    path = (sys.argv[2])
else:
    skala = 50

alt = 0

fileName = path

def drawCross(x, y):
    msp.add_text(
                "X:"+str(x), dxfattribs={
                    "layer": "wsp", "height": 1, "style": "Arial"
                }).set_pos((x+0.5, y+0.5))
    msp.add_text(
                "Y:"+str(y), dxfattribs={
                    "layer": "wsp", "height": 1, "style": "Arial"
                }).set_pos((x+0.5, y-1.5))
    msp.add_line((x-2.5, y), (x+2.5, y), dxfattribs={"layer": "siatka"})
    msp.add_line((x, y-2.5), (x, y+2.5), dxfattribs={"layer": "siatka"})

try:
    doc = ezdxf.readfile(fileName)
    # iterate over all entities in modelspace
    msp = doc.modelspace()
    #doc.layers.add(name="siatka", color=0, linetype="SOLID")
    for e in msp:
        if e.dxftype() == "LINE":
            if e.dxf.start[0] < minx: 
                minx = e.dxf.start[0]
            if e.dxf.end[0] < minx: 
                minx = e.dxf.end[0]
            if e.dxf.start[1] < miny: 
                miny = e.dxf.start[1]
            if e.dxf.end[1] < miny: 
                miny = e.dxf.end[1]
            
            if e.dxf.start[0] > maxx: 
                maxx = e.dxf.start[0]
            if e.dxf.end[0] > maxx: 
                maxx = e.dxf.end[0]
            if e.dxf.start[1] > maxy: 
                maxy = e.dxf.start[1]
            if e.dxf.end[1] > maxy: 
                maxy = e.dxf.end[1]
        elif e.dxftype() == "POLYLINE":
            for point in e.points():
                if point[0] < minx: 
                    minx = point[0]
                if point[1] < miny: 
                    miny = point[1]
                if point[0] > maxx: 
                    maxx = point[0]
                if point[1] > maxy: 
                    maxy = point[1]

        
    ys = (math.floor(miny/100)*100) - (50 * alt)
    ye = (math.ceil(maxy/100)*100) - (50 * alt)
    xs = (math.floor((minx)/100)*100) - (50 * alt)
    xe = (math.ceil((maxx)/100)*100) - (50 * alt)
    
    lenX = (xe - xs) + 100
    lenY = (ye - ys) + 100

    for x in range(0, int(lenX/skala)):
        for y in range(0, int(lenY/skala)):
            drawCross(xs+(x*skala),ys+(y*skala))

    
    print(fileName)
    doc.saveas(fileName[:-4]+"_s.dxf")
    doc.saveas("public/cross.dxf")


except IOError:
    print(f"Not a DXF file or a generic I/O error.")
    sys.exit(1)
except ezdxf.DXFStructureError:
    print(f"Invalid or corrupted DXF file.")
    sys.exit(2)