Python 3 Tkinter Script to Build COVID-19 Vaccine Availability Checker Using Pincode & Date GUI Desktop App

Python 3 Tkinter Script to Build COVID-19 Vaccine Availability Checker Using Pincode & Date GUI Desktop App

# Import modules
from tkinter import *
from tkinter import messagebox
from datetime import datetime
import pytz
import requests


software_version = 'v1.1'
IST = pytz.timezone('Asia/Kolkata')


app = Tk()

# App Geometry and components
app.geometry("700x480+600+300")
app.title(f"Vaccine Availability Checker  {software_version}")
app.iconbitmap("Images_Icons\covid-vaccine.ico")
app.resizable(False, True)
app.config(background = '#293241')

## DEFAULT values
PINCODE = '110096'

# Color value reference
top_left_frame_bg  = "#5c4ce1"
top_right_frame_bg = '#867ae9'

# Frame details
frame1 = Frame(app, height = 120, width=180, bg= top_left_frame_bg, bd=1, relief = FLAT)
frame1.place(x=0,y=0)

frame2 = Frame(app, height = 120, width=520, bg= top_right_frame_bg, bd=1, relief = FLAT)
frame2.place(x=180,y=0)

frame3 = Frame(app, height = 30, width=700, bg= 'black', bd=1, relief = RAISED)
frame3.place(x=0,y=120)

# Labels
label_date_now = Label(text="Current Date", bg = top_left_frame_bg, font = 'Verdana 12 bold')
label_date_now.place(x=20, y=40)

label_time_now = Label(text="Current Time", bg = top_left_frame_bg, font = 'Verdana 12')
label_time_now.place(x=20, y=60)

label_pincode = Label(text="Pincode", bg = top_right_frame_bg, font = 'Verdana 11')
label_pincode.place(x=220, y=15)

label_date = Label(text="Date", bg = top_right_frame_bg, font = 'Verdana 11')
label_date.place(x=380, y=15)

label_dateformat = Label(text="[dd-mm-yyyy]", bg = top_right_frame_bg, font = 'Verdana 7')
label_dateformat.place(x=420, y=18)

label_search_vacc = Label(text="Search \nAvailable Vaccine", bg = top_right_frame_bg, font = 'Verdana 8')
label_search_vacc.place(x=570, y=70)

label_head_result = Label(text=" Status       \tCentre-Name\t              Age-Group    Vaccine       Dose_1     Dose_2     Total", bg = 'black', fg='white', font = 'Verdana 8 bold')
label_head_result.place(x=10, y=125)


# Entry boxes
pincode_text_var = StringVar()
pincode_textbox = Entry(app,width = 11, bg = '#eaf2ae', fg= 'black', textvariable = pincode_text_var, font='verdana 11')
pincode_textbox['textvariable'] = pincode_text_var
pincode_textbox.place(x= 220, y=40)

date_text_var = StringVar()
date_textbox = Entry(app,width = 12, bg = '#eaf2ae', fg= 'black', textvariable = date_text_var, font='verdana 10')
date_textbox['textvariable'] = date_text_var
date_textbox.place(x= 380, y=40)


## TEXT BOX - for RESULTs
result_box_avl = Text(app, height = 20, width = 8, bg='#293241',fg='#ecfcff', relief=FLAT, font='verdana 10')
result_box_avl.place(x= 3 , y= 152)
result_box_cent = Text(app, height = 20, width = 30, bg='#293241',fg='#ecfcff', relief=FLAT, font='verdana 10')
result_box_cent.place(x= 75 , y= 152)
result_box_age = Text(app, height = 20, width = 8, bg='#293241',fg='#ecfcff', relief=FLAT, font='verdana 10')
result_box_age.place(x= 330 , y= 152)
result_box_vacc = Text(app, height = 20, width = 10, bg='#293241',fg='#ecfcff', relief=FLAT, font='verdana 10')
result_box_vacc.place(x= 400 , y= 152)
result_box_D1 = Text(app, height = 20, width = 7, bg='#293241',fg='#ecfcff', relief=FLAT, font='verdana 10')
result_box_D1.place(x= 490 , y= 152)
result_box_D2 = Text(app, height = 20, width = 7, bg='#293241',fg='#ecfcff', relief=FLAT, font='verdana 10')
result_box_D2.place(x= 555 , y= 152)
result_box_D1_D2 = Text(app, height = 20, width = 7, bg='#293241',fg='#ecfcff', relief=FLAT, font='verdana 10')
result_box_D1_D2.place(x= 630 , y= 152)


## Defining Functions

# Detect Automatic Pincode
def fill_pincode_with_radio():
    curr_pincode = get_pincode_ip_service(url)
    pincode_text_var.set(curr_pincode)

url = 'https://ipinfo.io/postal'
def get_pincode_ip_service(url):
    response_pincode = requests.get(url).text
    return response_pincode

def update_clock():
    raw_TS = datetime.now(IST)
    date_now = raw_TS.strftime("%d %b %Y")
    time_now = raw_TS.strftime("%H:%M:%S %p")
    formatted_now = raw_TS.strftime("%d-%m-%Y")
    label_date_now.config(text = date_now)
    # label_date_now.after(500, update_clock)
    label_time_now.config(text = time_now)
    label_time_now.after(1000, update_clock)
    return formatted_now

def insert_today_date():
    formatted_now = update_clock()
    date_text_var.set(formatted_now)
    tomorrow_date_chkbox['state'] = DISABLED

def refresh_api_call(PINCODE, DATE):
    header = {'User-Agent': 'Chrome/84.0.4147.105 Safari/537.36'}
    request_link = f"https://cdn-api.co-vin.in/api/v2/appointment/sessions/public/findByPin?pincode={PINCODE}&date={DATE}"
    response = requests.get(request_link, headers = header)
    resp_JSON = response.json()
    return resp_JSON

def clear_result_box():
    result_box_avl.delete('1.0', END)
    result_box_cent.delete('1.0', END)
    result_box_age.delete('1.0', END)
    result_box_vacc.delete('1.0', END)
    result_box_D1.delete('1.0', END)
    result_box_D2.delete('1.0', END)
    result_box_D1_D2.delete('1.0', END)

def search_vaccine_avl():
    clear_result_box()
    PINCODE = pincode_text_var.get().strip()
    DATE = date_text_var.get()
    resp_JSON = refresh_api_call(PINCODE, DATE)

    try:
        if len(resp_JSON['sessions']) == 0:
            messagebox.showinfo("INFO","Vaccine not yet arrived for the given date")

        for sess in resp_JSON['sessions']:
            age_limit           = sess['min_age_limit']
            center_name         = sess['name']
            pincode             = sess['pincode']
            vaccine_name        = sess['vaccine']
            available_capacity  = sess['available_capacity']
            qnty_dose_1         = sess['available_capacity_dose1']
            qnty_dose_2         = sess['available_capacity_dose2']
            slot_date           = sess['date']

            if available_capacity > 0:
                curr_status = 'Available'
            else:
                curr_status = 'NA'

            if age_limit == 45:
                age_grp = '45+'
            else:
                age_grp = '18-44'

            '''
            This is not the optimized approach but for the time being I could able to find this alternative solution.
            Somehow, the center name is getting aligned but at the same time it is not limiting itself in the specified area
            rather, it disturb the alignment of the next column (age group). Therefore, I have to create separate columns for
            each entity. The issue with this approach is, each column is scrolling separately which is kind of mess while
            dealing with more rows.
            There is a solution, however, which is to make a frame and make this as root of all the textbox and also create
            a vertical scrollbar fixed to that root frame- that will scroll of of them together.
            '''

            # data_msg = f" {curr_status:<12}{center_name:<35.30}{age_grp:^20}{vaccine_name: ^10}{qnty_dose_1:^5}{qnty_dose_2:^5}\n"
            # data_msg = "{0:<12}{1:<40}{2:<10}{3:<10}{4:<5}{5:<5}\n".format(curr_status,center_name,age_grp,vaccine_name,qnty_dose_1,qnty_dose_2)
            # result_box.insert(END, " {0:<10s} {1:<30.28s}    {2:<10s} {3:<14s}  {4:<5} {5:<5} {6:^8}\n".format(curr_status,center_name,str(age_grp),vaccine_name,str(qnty_dose_1),str(qnty_dose_2), available_capacity))
            # result_box.insert(END, str.rjust(age_grp, 8))
            result_box_avl.insert(END, f"{curr_status:^6s}")
            result_box_avl.insert(END,"\n")
            result_box_cent.insert(END, f"{center_name:<30.29s}")
            result_box_cent.insert(END,"\n")
            result_box_age.insert(END, f"{age_grp:<6s}")
            result_box_age.insert(END,"\n")
            result_box_vacc.insert(END, f"{vaccine_name:<8s}")
            result_box_vacc.insert(END,"\n")
            result_box_D1.insert(END, f"{qnty_dose_1:>5}")
            result_box_D1.insert(END,"\n")
            result_box_D2.insert(END, f"{qnty_dose_2:>5}")
            result_box_D2.insert(END,"\n")
            result_box_D1_D2.insert(END, f"{available_capacity:<5}")
            result_box_D1_D2.insert(END,"\n")
    except KeyError as KE:
        messagebox.showerror("ERROR","No Available center(s) for the given Pincode and date")
        print (pincode_text_var.get())

# Buttons
search_vaccine_image = PhotoImage(file= "Images_Icons\search-icon.png")
search_vaccine_btn = Button(app, image=search_vaccine_image, bg= top_right_frame_bg, command = search_vaccine_avl, relief= RAISED)
search_vaccine_btn.place(x = 600,y = 25)

# Radio Buttons
curr_loc_var = StringVar()
radio_location = Radiobutton(app, text="Current location", bg= top_right_frame_bg, variable= curr_loc_var, value = curr_loc_var, command = fill_pincode_with_radio) #state=DISABLED
radio_location.place(x=215, y=65)

# Check Box
chkbox_today_var = IntVar()
today_date_chkbox = Checkbutton(app, text='Today', bg= top_right_frame_bg, variable=chkbox_today_var, onvalue= 1, offvalue=0, command = insert_today_date)
today_date_chkbox.place(x= 375, y= 65)

chkbox_tomorrow_var = IntVar()
tomorrow_date_chkbox = Checkbutton(app, text='Tomorrow', bg= top_right_frame_bg, variable=chkbox_tomorrow_var, onvalue= 1, offvalue=0, state = DISABLED)
tomorrow_date_chkbox.place(x= 435, y= 65)

update_clock()

app.mainloop()