from flask import Flask, render_template, request, redirect
import csv

HOST_NAME = "localhost"
HOST_PORT = 5000
app = Flask(__name__)

@app.route("/")
def mainpage():
  with open("animelist.csv") as file:
    reader = csv.reader(file)
    enum = list(enumerate(list(reader)))
    lista = []
    for el in enum:
      lista.append([el[0]]+el[1])
    return render_template('index.html',csv=lista)

@app.route("/new_animu", methods = ['POST', 'GET'])
def new_animu():
  if request.method == 'GET':
    return redirect('/')
  if request.method == 'POST':
    form_data = request.form
    #print(form_data)
    if add_animu_fun(form_data):
      return redirect('/')
    return f'Errore aggiungendo anime, hai inserito correttamente i valori?'

@app.route("/del_animu", methods = ['POST', 'GET'])
def del_animu():
  if request.method == 'GET':
    return redirect('/')
  if request.method == 'POST':
    form_data = request.form
    print(form_data)
    if del_animu_fun(form_data):
      return redirect('/')
    return f'Errore rimuovendo anime, hai inserito correttamente i valori?'

@app.route("/mod_animu", methods = ['POST', 'GET'])
def mod_animu():
  if request.method == 'GET':
    return redirect('/')
  if request.method == 'POST':
    form_data = request.form
    print(form_data)
    if mod_animu_fun(form_data):
      return redirect('/')
    return f'Errore modificando anime, hai inserito correttamente i valori?'


def add_animu_fun(form_data):
  try:
    if not (form_data['field_season'] and form_data['field_url'] and form_data['field_folder']):
      return False
    stagione = int(form_data['field_season'])
    new_entry = [form_data['field_url'],
              form_data['field_folder'] + '/Season ' + str(stagione),
              'Episode S' + format(stagione,'02d'),
              1,
              1]
    with open("animelist.csv",mode='a') as animecsv: #link,cartella>
      csvfile=csv.writer(animecsv)
      csvfile.writerow(new_entry)
    return True
  except Exception as e:
    print(e)
    return False

def del_animu_fun(form_data):
  try:
    if not form_data['del_field']:
      return False
    data = []
    with open("animelist.csv", 'r', newline='') as file:
      csv_reader = csv.reader(file)
      for index, row in enumerate(csv_reader):
        if index != int(form_data['del_field']):
          data.append(row)
    # Write the remaining data back to the CSV file
    with open("animelist.csv", 'w', newline='') as file:
      csv_writer = csv.writer(file)
      csv_writer.writerows(data)
    return True
  except Exception as e:
    print(e)
    return False

def mod_animu_fun(form_data):
  try:
    index = int(form_data['field_1_index'])
    url = form_data['field_1_url']
    folder = form_data['field_1_folder']
    name = form_data['field_1_name']
    check = form_data['field_1_check']
    naming = form_data['field_1_naming']
    if not ((check in '01') and (naming in '01')):
      return False
    newrow = [url,folder,name,check[-1:],naming[-1:]]
    if not index: #cosi non si può modificare la riga 0
      return False
    data = []
    with open("animelist.csv", 'r', newline='') as file:
      csv_reader = csv.reader(file)
      for ind, row in enumerate(csv_reader):
        if ind != index:
          data.append(row)
        else: #cosi se lindex dato è fuori dal range non si fanno modifiche
          for i in range(len(newrow)):
            if newrow[i] == '':
              newrow[i]=row[i]
          data.append(newrow)
    # Write the remaining data back to the CSV file
    with open("animelist.csv", 'w', newline='') as file:
      csv_writer = csv.writer(file)
      csv_writer.writerows(data)
    return True
  except Exception as e:
    print(e)
    return False

if __name__ == "__main__":
  app.run(HOST_NAME, HOST_PORT)