reminderStorage.py

import csv
import datetime

class reminder:
    def __init__(self, user, dateTime, reminder): #constructor of all the variables in this object
        self.user = user
        self.dateTime = datetime.datetime.strptime(dateTime, '%Y-%m-%d %H:%M:%S') #will make the datetime string into a datetime struct (make it easier to get different elements of the date and time), learnt about datetime from stack overflow (https://stackoverflow.com/questions/415511/how-to-get-the-current-time-in-python) and to convert it from string to struct at https://stackabuse.com/converting-strings-to-datetime-in-python/
        self.reminder = reminder

def readReminder():
    objList = []
    try: #if no file then create file (what try and except is used)
        file = open("reminders.csv","r")
        csvRead = csv.reader(file,delimiter=",")
        for line in csvRead:
            if line != None and line != "":
                objList.append(reminder(line[0],line[1],line[2]))    #creating the object based on whats contained in the csv file
        file.close()
    except FileNotFoundError:
        open("reminders.csv","w",newline="")
    return objList

def appendReminder(toWrite): #this will write all the reminders to the reminders file
    objArray = [str(toWrite.user),str(toWrite.dateTime),str(toWrite.reminder)] #this converts the object into a list so that it can be written to the csv file
    file = open("reminders.csv","a",newline="")
    csvWrite = csv.writer(file,delimiter=",")
    csvWrite.writerows([objArray])
    file.close()



def writeReminder(toWrite): #this will write all the reminders to the reminders file (even if some are deleted)
    fileArray = []
    for i in range(0,len(toWrite)):
        fileArray.append([toWrite[i].user,toWrite[i].dateTime,toWrite[i].reminder]) #this converts the object into a list so that it can be written to the csv file
    file = open("reminders.csv","w",newline="")
    csvWrite = csv.writer(file,delimiter=",")
    csvWrite.writerows(fileArray)
    file.close()

def userReminderList(user):
    objList = readReminder()
    correctUser = []
    for i in range(0,len(objList)):
        if objList[i].user == user:
            correctUser.append(objList[i])
    return correctUser

def deleteReminder(reminderList, loc):
    del reminderList[loc]
    writeReminder(reminderList)
    return readReminder() #this will make it easier to update the reminder object

 
#if __name__ == "__main__": #just testing the code (can be ignored)
    #objList = readReminder()
    #for x in range(0,len(objList)):
        #print(objList[x].user)
        #print(objList[x].dateTime)
        #print(objList[x].reminder)