from typing import Optional
import nazca as nd
import numpy as np
import math
from ...routing import Route

from ...structures import *
from ....technologies import *

import pandas as pd
from ...structures import _my_polygon

class Cross:
    def __init__(self,
                 name: Optional[str] = None,
                 L: list = [0  ,   1,  2,  3,  4],
                 w: list = [0.5,0.45,0.6,0.4,0.5],
                 xs : str = 'strip',
                 show_pins: bool=False
                 ) -> None:
    
        self.name = name
        if (self.name==None):
            self.instantiate = False
        else :
            self.instantiate = True
                
        self.L = L
        self.w = w
        self.xs =xs

        self.cell = self.generate_gds(show_pins=show_pins)
        
    def generate_gds(self,show_pins):
        with nd.Cell(instantiate=self.instantiate,name=self.name) as C:
            
            for layers,growx,growy,acc in nd.layeriter(xs=self.xs):
                (a1,b1), (a2,b2),c1,c2 = growx
            
                L = np.array(self.L)
                
                L_arm = np.max(L)
                self.L_arm = L_arm
                w = np.array(self.w) + b1 - b2
                vtx_x = np.r_[L,np.flip(L,0)]
                vtx_y = np.r_[w/2,-np.flip(w,0)/2]
                
                vtx = np.c_[vtx_x,vtx_y]
                _my_polygon(layer_wg=layers,vtx=vtx).put(-L_arm,0,0)
                _my_polygon(layer_wg=layers,vtx=vtx).put(0,-L_arm,90)
                _my_polygon(layer_wg=layers,vtx=vtx).put(0,L_arm,-90)
                _my_polygon(layer_wg=layers,vtx=vtx).put(L_arm,0,180)
            
            nd.Pin(name='a1',width=self.w[0]).put(-L_arm,0,180)
            nd.Pin(name='a2',width=self.w[0]).put( 0,-L_arm,-90)
            nd.Pin(name='b2',width=self.w[0]).put( 0, L_arm, 90)
            nd.Pin(name='b1',width=self.w[0]).put( L_arm,0,0)
            
            if (show_pins):
                nd.put_stub()
            
        return C
    
    def generate_test_gds(self,gc,num=5,dX_gc2gc=400,w_end=0.2,L_end=10):
        with nd.Cell(instantiate=False) as C:
            
            if (isinstance(gc,nd.Cell)):
                gc_cell = gc
            elif (hasattr(gc,'cell')):
                gc_cell = gc.cell
            else :
                raise Exception("ERROR: In <mxpiv::passive::cross::generate_test_gds>, <gc> is not recongized")
            
            res = self.L_arm*2
            
            dX = res*1.5
            
            pic_strip = Route(radius=10,width=self.w[0],xs=self.xs)
            
            gc_In = gc_cell.put('g1',-dX_gc2gc/2,0,180)
            pin_pre = gc_In.pin['g1']
            for _idx_ in range(0,num):
                inst = self.cell.put('a0',_idx_*dX - (num/2 - 1/2)*dX)
                pic_strip.strt_p2p(pin1=pin_pre,pin2=inst.pin['a1'],arrow=False).put()
                pin_pre = inst.pin['b1']

                nd.taper(length=L_end/2,width1=self.w[0],width2=w_end,xs=self.xs).put(inst.pin['b2'])
                nd.strt(length=L_end/2,width=w_end,xs=self.xs).put()
                nd.taper(length=L_end/2,width1=self.w[0],width2=w_end,xs=self.xs).put(inst.pin['a2'])
                nd.strt(length=L_end/2,width=w_end,xs=self.xs).put()

            gc_Out = gc_cell.put('g1', dX_gc2gc/2,0,0)
            pic_strip.strt_p2p(pin1=pin_pre,pin2=gc_Out.pin['g1'],arrow=False).put()
                
            
            
        return C

class Cross_Sine(Cross):
    def __init__(self,
                 name: Optional[str] = None,
                 res: list = [1,1,1,1],
                 w: list = [0.5,0.45,0.6,0.4,0.5],
                 xs : str = 'strip',
                 n_points: int = 4,
                 show_pins: bool=False
                 ) -> None:
        
                        
        L = 0
        for _idx_ in range(0,len(w)-1):
            L_sect = np.linspace(L,L+res[_idx_],n_points)
            L = L+res[_idx_]
            w_sect = -np.cos((L_sect-L)/res[_idx_]*np.pi)*(w[_idx_]-w[_idx_+1])/2 + (w[_idx_]+w[_idx_+1])/2
            
            if (_idx_==0):
                L_crs = L_sect
                w_crs = w_sect
            else :
                L_crs = np.r_[L_crs,L_sect]
                w_crs = np.r_[w_crs,w_sect]

                
        L_crs = np.r_[L_crs,L_crs[-1]+w_crs[-1]/2]
        w_crs = np.r_[w_crs,w_crs[-1]]
        
        
        
        
        super().__init__(name=name,L=L_crs,w=w_crs,xs=xs,show_pins=show_pins)