import csv
import json

WORD_THRESHOLD = 4

def build_db(inputCSV, outputJSON):
    db = []
    with open(inputCSV, 'r') as file:
        csv_reader = csv.reader(file, delimiter=',')
        data = False
        for row in csv_reader:
            if data:
                db.append(row + (index(row[1]),))
            else:
                data = True
    with open(outputJSON, 'w') as file:
        json.dump(serialize(db), file)
    return db

def serialize(db):
    return list(map(lambda row: (row[0], row[1], list(row[2])), db))

def unserialize(db):
    return list(map(lambda row: (row[0], row[1], set(row[2])), db))

def open_db(filePath):
    with open(filePath, 'r') as file:
        return unserialize(json.load(file))

def scalar(a, b):
    return len(a.intersection(b))

def find_best_quote(db, indexed_input)
    max_score = None
    for entry in db:


def index(text):
    words = map(lambda w: ''.join([c for c in w if c.isalpha()]), text.split(' '))
    important_words = set([w for w in words if len(w) > WORD_THRESHOLD])
    return important_words