import math
import csv
from colorama import just_fix_windows_console
just_fix_windows_console()
from colorama import Fore, Back, Style

# 
# HELLO MODIFY THIS!
#
#Hello there! Modify this!
#INITIAL SET UP
Ebasis = 65500.00
mass_limit = 28.000

#MODIFY THIS EVERY NEW ITERATION
modAmount = 2 # amount of results you want to iterate through (starts at panel_val_0 and goes to this value minus one)
# So the highest x of panel_val_x with one added to it. (modAmount = 1 only runs panel_val_0, modAmount = 3 runs through panel_val_0, 1 and 2)

#                 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16
pThickness_01 = [ 4, 5] # panel 1 and 10
pThickness_02 = [ 4, 5] # panel 2 and 9
pThickness_03 = [ 4, 5] # panel 3 and 8
pThickness_04 = [ 4, 5] # panel 4 and 7
pThickness_05 = [ 4, 6] # panel 5 and 6

#         0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16
dim1_0 = [25,70]
dim2_0 = [ 2, 2]
dim3_0 = [20,10]
dim4_0 = [15,15]


# BELOW THIS NOTHING NEEDS TO BE MODIFIED

def GetValueofElement(ElementID, Loadcase, Valuetype, Fileadress):
    FindTitle = False
    intiated = False
    with open(Fileadress, newline='') as csvfile:
        reader = csv.reader(csvfile, delimiter=',', quotechar="'")
        for row in reader:
            values = row
            #print(values)
            if intiated:
                if str(values[ElemID_ID]) == str(ElementID) and str(values[Loadcase_ID])==str(Loadcase):
                    return float(values[Value_ID])*1.5 #Safety Factor here!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
            if FindTitle:
                #print(str(values))
                Header = values
                ElemID_ID = Header.index("Elements")
                Loadcase_ID = Header.index("Loadcase")
                Value_ID = Header.index(Valuetype)
                FindTitle = False
                intiated = True
            if len(values)==0:
                FindTitle=True
        return None

#CONSTANTS
axial = 'Element Stresses (1D):CBAR/CBEAM Axial Stress'
# material properties
sUlt = 530
sYield = 490
density = 2.7 * (10 ** -6) #2.7*10^-9 in t/mm^3

pWidth_0 = [200,200,200,200,200,200,200,200,200,200,200,200,200,200]
pLength_0 = [750,750,750,750,750,750,750,750,750,750,750,750,750]

def GetAvgStressofPanel(panelNo, Loadcase, ValueType):
    id = panelNo * 3 - 2
    return (GetValueofElement(id, Loadcase, ValueType, panel) + GetValueofElement(id+1, Loadcase, ValueType, panel) + GetValueofElement(id+2, Loadcase, ValueType, panel))/(3*1.5)


def GetCombAvgStressofStringer(stringerNo, Loadcase):
    id = stringerNo  * 3 - 3 + 40
    avgStringerStress = (GetValueofElement(id, Loadcase, axial, stringer) + GetValueofElement(id+1, Loadcase, axial, stringer) + GetValueofElement(id+2, Loadcase, axial, stringer))/(3*1.5)
    leftPID = stringerNo
    rightPID = stringerNo + 1
    leftPStress = GetAvgStressofPanel(leftPID, Loadcase, 'XX')
    rightPStress = GetAvgStressofPanel(rightPID, Loadcase, 'XX')
    return((leftPStress * 0.5 * pThickness[stringerNo - 1] * pWidth + rightPStress * 0.5 * pThickness[stringerNo]*pWidth + avgStringerStress * areaStringer) / (areaStringer + 0.5*pThickness[stringerNo-1] * pWidth + 0.5 * pThickness[stringerNo]*pWidth))

def GetAlpha(x):
    if(0.4 <= x <= 1.095):
        alpha = 1.4 - 0.628 * x
    elif(1.095 < x <= 1.633):
        alpha = 0.78/x
    elif(x > 1.633):
        alpha = 0.69/(x**0.75)
    else:
        alpha = 0
    return(alpha)

def GetSigCrip(stringerNo, Loadcase): ## unfinished, need to understand x claulcation still a bit
    #use b1 and b2 for calc
    #E_c = Ebasis
    #no alpha = 1 it is none -> what do then? -> ignore that element in averaging
    #averaging only with elements that cripple
    #if  nothing cripples, use yield strength
    b1 = dim1 - dim2
    b2 = dim3 - dim2
    
    x1 = (b1/dim2)*math.sqrt(sYield/(3.60*Ebasis))
    
    alpha1 = GetAlpha(x1)
    
    #print("x12: " + str(x))
    sigCrip1 = alpha1 * sYield
    
    x2 = (b2/dim2)*math.sqrt(sYield/(3.60*Ebasis))
    
    alpha2 = GetAlpha(x2)
    
    sigCrip2 = alpha2 * sYield

    if(alpha1 != 0 and alpha2 != 0):
        sigCripAVG = (sigCrip1 * b1 * dim2 + sigCrip2 * b2 * dim2 * 2)/(b1 * dim2 + b2 * dim2 * 2)
    elif(alpha1 != 0):
        sigCripAVG = (sigCrip1 * b1 * dim2)/(b1 * dim2)
    elif(alpha2 != 0):
        sigCripAVG = (sigCrip2 * b2 * dim2)/(b2 * dim2)
    else:
        sigCripAVG = sYield

    # average only over what can buckle!!! F/A, A = sumOf(bi*ti)
    return min(sigCripAVG, sYield)


def kBiax(panelNo,Loadcase):
    beta = GetAvgStressofPanel(panelNo, Loadcase, 'YY')/GetAvgStressofPanel(panelNo, Loadcase, 'XX')
    kSigX = 100000000
    for m in range(1, 10):
        for n in range(1, 100):
            kTemp = (m*m+n*n*alpha*alpha)*(m*m+n*n*alpha*alpha)/(alpha*alpha*(m*m+beta*n*n*alpha*alpha))
            if(0 < kTemp < kSigX):
                kSigX = kTemp
    return(kSigX)


def RF_panel(panelNo, Loadcase):
    sE = ((pThickness[panelNo-1]/pWidth)**2) * Ebasis * math.pi * math.pi / (12*(1-(0.34*0.34)))
    #print(sE)
    rfBiax = (kBiax(panelNo, Loadcase)*sE)/abs(1.5*GetAvgStressofPanel(panelNo, Loadcase, 'XX'))
    rfShear = (kShear*sE)/abs(1.5*GetAvgStressofPanel(panelNo, Loadcase, 'XY'))
    result = 1 / ( (1 / rfBiax) + (1 / (rfShear*rfShear)))
    #print(rfBiax)
    #print(rfShear)
    return(result)


def GetLambda(i): # checked and correct
    I_comb = GetIcomb(i)
    r_gyr = math.sqrt(I_comb/(areaStringer + 0.5 * pThickness[i] * pWidth + 0.5 * pThickness[i+1] * pWidth))
    c = 1
    sLambda = c*pLength/r_gyr
    return(sLambda)


def GetSigCRIT(stringerNo, Loadcase):
    sLambda_crit = math.sqrt((2*math.pi*math.pi*Ebasis)/GetSigCrip(stringerNo,Loadcase))
    # Lambda_crit correct
    hSigCrip = GetSigCrip(stringerNo, Loadcase)
    # SigCrip  correct!!
    hLambda = GetLambda(stringerNo-1)
    #print("Lmabda: " + str(hLambda))
    # ISSUE HERE - Lambda off from results
    # no double checking now
        
    if(hLambda<sLambda_crit):
        return(hSigCrip - ((1/Ebasis)*((hSigCrip/(2*math.pi))**2)*(hLambda**2)))
    else:
        return((math.pi**2)*Ebasis / (hLambda ** 2))


def GetRFstringer(stringerNo, Loadcase):
    return(abs(GetSigCRIT(stringerNo, Loadcase)/(1.5*GetCombAvgStressofStringer(stringerNo, Loadcase))))

def GetCrosssectionValues(i):
    I_comb = GetIcomb(i)
    r_gyr = math.sqrt(I_comb/(areaStringer + 0.5 * pThickness[i] * pWidth + 0.5 * pThickness[i+1] * pWidth))
    c = 1
    sLambda = c*pLength/r_gyr
    sLambda_crit = math.sqrt((2*math.pi*math.pi*Ebasis)/GetSigCrip(i, 0)) # IMPORTANT THIS IS ONLY FOR S crip above 490
    return(str(I_comb) + "," + str(r_gyr) + "," + str(sLambda) + "," + str(sLambda_crit))


def GetIcomb(i):
    wing_1_w = pWidth/2
    wing_2_w = pWidth/2

    wing_1_t = pThickness[i]
    wing_2_t = pThickness[i+1]


    z1 = -dim1/2
    z3 = -(dim1-(dim2/2))
    z4 = -dim2/2

    y1 = ((dim3/2)-(dim2/2))
    y3 = 0
    y4 = dim3+(dim4/2)

    zw_1 = wing_1_t/2
    zw_2 = wing_2_t/2

    yw_1 = 50
    yw_2 = -50


    a1 = dim1*dim2
    a3 = dim2*(dim3-dim2-dim2)
    a4 = dim4*dim2

    aw_1 = wing_1_w * wing_1_t
    aw_2 = wing_2_t * wing_2_w

    Iyy1 = (dim2*(dim1**3))/12
    Izz1 = (dim1*(dim2**3))/12

    Iyy3 = ((dim3-dim2-dim2)*(dim2**3))/12
    Izz3 = (((dim3-dim2-dim2)**3)*(dim2))/12

    Iyy4 = (dim4*(dim2**3))/12
    Izz4 = (dim2*(dim4**3))/12

    Iw_1_yy = (wing_1_w*(wing_1_t**3))/12
    Iw_1_zz = (wing_1_t*(wing_1_w**3))/12

    Iw_2_yy = (wing_2_w*(wing_2_t**3))/12
    Iw_2_zz = (wing_2_t*(wing_2_w**3))/12


    z_c = (z1*a1+z1*a1+z3*a3+z4*a4+z4*a4+zw_1*aw_1+zw_1*aw_2)/(a1+a1+a3+a4+a4+aw_1+aw_2)
    y_c = (-y1*a1+y1*a1+y3*a3+(-y4*a4)+y4*a4+yw_1*aw_1+yw_2*aw_2)/(a1+a1+a3+a4+a4+aw_1+aw_2)

    Iyy = (Iyy1+((z1-z_c)**2)*a1)+(Iyy1+((z1-z_c)**2)*a1)+(Iyy3+((z3-z_c)**2)*a3)+(Iyy4+((z4-z_c)**2)*a4)+(Iyy4+((z4-z_c)**2)*a4)+(Iw_1_yy+((zw_1-z_c)**2)*aw_1)+(Iw_2_yy+((zw_2-z_c)**2)*aw_2)
    Izz = (Izz1+((y1-y_c)**2)*a1)+(Izz1+((-y1-y_c)**2)*a1)+(Izz3+((y3-y_c)**2)*a3)+(Izz4+((y4-y_c)**2)*a4)+(Izz4+((-y4-y_c)**2)*a4)+(Iw_1_zz+((yw_1-y_c)**2)*aw_1)+(Iw_2_zz+((yw_2-y_c)**2)*aw_2)


    if(Iyy > Izz):
        return(Izz)
    else:
        return(Iyy)







for u in range(modAmount):
    isWithinRF = 1
    
    panel = 'panel_val_' + str(u) +'.csv'
    stringer = 'stringer_val_' + str(u) + '.csv'
    
    # dimensions
    pThickness = [pThickness_01[u], pThickness_02[u], pThickness_03[u], pThickness_04[u], pThickness_05[u],  pThickness_05[u],  pThickness_04[u],  pThickness_03[u],  pThickness_02[u],  pThickness_01[u]]
    pWidth = pWidth_0[u]
    pLength = pLength_0[u]

    dim1 = dim1_0[u]
    dim2 = dim2_0[u]
    dim3 = dim3_0[u]
    dim4 = dim4_0[u]

    areaStringer = dim4 * dim2 * 2 + (dim1 - dim2) * dim2 * 2 + dim3 * dim2
    
    print("\n\n" + Back.CYAN + "Calculations for iteration " + str(u) + Style.RESET_ALL)
    print("\n Panel Thickness 1 & 10: " + str(pThickness[0]) + "\n Panel Thickness 2 & 9: " + str(pThickness[1]) + "\n Panel Thickness 3 & 8: " + str(pThickness[2]) + "\n Panel Thickness 4 & 7: " + str(pThickness[3]) + "\n Panel Thickness 5 & 6: " + str(pThickness[4]) + "\n Panel Width: " + str(pWidth) + "\n Panel Length: " + str(pLength) + "\n\n Dim 1: " + str(dim1) + "\n Dim2: " + str(dim2) + "\n Dim 3: "+ str(dim3) + "\n Dim 4: "+ str(dim4))
    
    #print("\n Panel Offset: " + str(pThickness/2) + "\n Stringer Offset: " + str(dim1/2))

    mass = density*(areaStringer*pLength*9) # + 10*pWidth*pThickness*pLength)
    for i in range(10):
        mass = mass + pWidth*pThickness[i]*density*pLength
    if(mass<mass_limit):
        print("\n\n Mass: " + Back.GREEN + str(mass) + Style.RESET_ALL)
    else:
        print("\n\n Mass: " + Back.RED + str(mass) + Style.RESET_ALL)
        isWithinRF = 0
    
    # REMEMBER SAFETY FACTOR OF 1.5 ALREADY INCLUDED
    # RF calculator for panels
    for c in range(1,4):
        print("\nPanel RF for loadcase " + str(c))
        for i in range(1, 31):
            w = sUlt/GetValueofElement(i,c,'vonMises',panel)
            if(w>1):
                print(Back.GREEN + str(w) + Style.RESET_ALL)
            else:
                print(Back.RED + str(w) + Style.RESET_ALL)
                isWithinRF = 0

    print(" ")
    # RF calculator for stringers
    for c in range(1,4):
        print("\nStringer RF for loadcase " + str(c))
        for i in range(40,67):
            w = abs(sUlt/GetValueofElement(i,c,axial,stringer))
            if(w>1):
                print(Back.GREEN + str(w) + Style.RESET_ALL)
            else:
                print(Back.RED + str(w) + Style.RESET_ALL)
                isWithinRF = 0

    # Stability Analysis
    print("\n\nStability Analysis\nPanel buckling")
    # Panel buckling
    # sig_aa,avg calculator
    alpha = pLength/pWidth
    kShear = 5.34 + 4/(alpha*alpha)
    for c in range(1,4):
        print("\nLoadcase " + str(c) + "\nAverage stress for panels 1 to 5 - XX, YY, XY - k_shear, k_biax, RF_panelbuckl")
        for i in range(1,6):
            w = RF_panel(i,c)
            if(w>1):
                w = Back.GREEN + str(w) + Style.RESET_ALL
            else:
                w = Back.RED + str(w) + Style.RESET_ALL
                isWithinRF = 0
                
            print(str(GetAvgStressofPanel(i, c, 'XX')) + "," + str(GetAvgStressofPanel(i, c, 'YY')) + "," + str(GetAvgStressofPanel(i, c, 'XY')) + "," + str(kShear) + "," + str(kBiax(i, c)) + "," + str(w))

    # Stringer buckling
    print("\n\nStringer buckling")
    for c in range(1,4):
        print("\nLoadcase " + str(c) + "\nCombined, average axial stress for stringers 1 to 5")
        for i in range(1,6):
            w = GetRFstringer(i,c)
            if(w>1):
                w = Back.GREEN + str(w) + Style.RESET_ALL
            else:
                w = Back.RED + str(w) + Style.RESET_ALL
                isWithinRF = 0
                
            
            print(str(GetCombAvgStressofStringer(i,c)) + "," + str(GetSigCrip(i, c)) + "," + str(w)) # no longer slightly off, RF stringer calc still wrong?

    # combined crosssection properties for combined buckling mode
    print("\n\nCombined crosssection properties for combined buckling")
    for i in range(5):
        print(GetCrosssectionValues(i))
    
    if(isWithinRF == 1):
        print("\n\n"  + Back.GREEN + str(u) + " WORKS!" + Style.RESET_ALL)
    else:
        print("\n\n"  + Back.RED + str(u) + " FAILURE!" + Style.RESET_ALL)
        
    #print(GetIcomb())


## OVERVIEW OF TODO:
# - improve some sections of code with TODO