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backend/utils/utils.py

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+import string
+from datetime import date, datetime, timedelta
+from random import choice, random, randrange
+
+from django.utils.text import slugify
+from faker import Faker
+
+fake = Faker()
+
+
+def gen_string(max_length):
+    return str(''.join(choice(string.ascii_letters) for i in range(max_length)))
+
+
+gen_string.required = ['max_length']
+
+
+def gen_digits(max_length: int):
+    '''Gera dígitos numéricos.'''
+    return str(''.join(choice(string.digits) for i in range(max_length)))
+
+
+def gen_first_name():
+    return fake.first_name()
+
+
+def gen_last_name():
+    return fake.last_name()
+
+
+def gen_email(first_name: str, last_name: str, company: str = None):
+    first_name = slugify(first_name)
+    last_name = slugify(last_name)
+    email = f'{first_name}.{last_name}@email.com'
+    return email
+
+
+def gen_date(min_year=2019, max_year=datetime.now().year):
+    # gera um date no formato yyyy-mm-dd
+    start = date(min_year, 1, 1)
+    years = max_year - min_year + 1
+    end = start + timedelta(days=365 * years)
+    return start + (end - start) * random()
+
+
+def gen_rg():
+    return gen_digits(10)
+
+
+def gen_cpf():
+    def calcula_digito(digs):
+        s = 0
+        qtd = len(digs)
+        for i in range(qtd):
+            s += n[i] * (1 + qtd - i)
+        res = 11 - s % 11
+        if res >= 10:
+            return 0
+        return res
+    n = [randrange(10) for i in range(9)]
+    n.append(calcula_digito(n))
+    n.append(calcula_digito(n))
+    return "%d%d%d%d%d%d%d%d%d%d%d" % tuple(n)
+
+
+def gen_phone():
+    return f'{gen_digits(2)} {gen_digits(4)}-{gen_digits(4)}'
+
+
+def gen_text():
+    return fake.paragraph(nb_sentences=5)