Perubahan rumus denda Kabupaten Bekasi

CHANGES.txt

+0.3.6 2021-07-05
+----------------
+- Perubahan rumus denda pada Kabupaten Bekasi
+
 0.3.5 2021-06-13
 ----------------
 - Tambah Kabupaten Cirebon

opensipkd/pad/services/bekasi_kab.py

-from datetime import date
+from datetime import (
+    date,
+    datetime,
+    )
+from opensipkd.hitung import round_up
 from .default import (
     Inquiry as BaseInquiry,
-    Reversal as BaseReversal,
+    Reversal,
     AvailableInvoice as BaseAvailableInvoice,
     )
 
@@ -10,6 +14,52 @@ def dmy(tgl):
     return tgl.strftime('%d-%m-%Y')
 
 
+class BaseDenda:
+    def __init__(self, tagihan, jatuh_tempo, persen_denda, tgl_hitung=None):
+        self.tagihan = tagihan
+        self.jatuh_tempo = jatuh_tempo
+        self.persen_denda = persen_denda
+        self.tgl_hitung = tgl_hitung or date.today()
+        self.jatuh_tempo = isinstance(jatuh_tempo, datetime) and \
+            self.jatuh_tempo.date() or jatuh_tempo
+
+    def hitung(self):
+        if self.jatuh_tempo is None:
+            return 0, 0
+        if self.jatuh_tempo >= self.tgl_hitung or self.persen_denda <= 0:
+            return 0, 0
+        bulan = self.bulan_tunggakan()
+        denda = bulan * float(self.persen_denda) / 100 * self.tagihan
+        return bulan, denda
+
+    def get_max_bln(self):
+        return 24
+
+    def bulan_tunggakan(self):
+        x = (self.tgl_hitung.year - self.jatuh_tempo.year) * 12
+        y = self.tgl_hitung.month - self.jatuh_tempo.month
+        n = x + y
+        if n < 0:
+            return 0
+        max_bln = self.get_max_bln()
+        if self.tgl_hitung.day > self.jatuh_tempo.day:
+            n += 1
+        if n > max_bln:
+            return max_bln
+        return n
+
+
+class Denda(BaseDenda):
+    def __init__(
+        self, tagihan, jatuh_tempo, persen_denda, tgl_hitung=None,
+            invoice=None):
+        super().__init__(tagihan, jatuh_tempo, persen_denda, tgl_hitung=None)
+        self.invoice = invoice
+
+    def get_max_bln(self):
+        return self.invoice.type_id in (5, 15) and 24 or 15
+
+
 PREFIX = '3218'
 INVOICE_ID = [
     ('Prefix', 4, 'N'),
@@ -32,7 +82,24 @@ NOTE_TGL_TERIMA = 'field terimatgl {tgl} >= ' + dmy(AWAL_TERIMA)
 class Inquiry(BaseInquiry):
     invoice_id_structure = INVOICE_ID
 
+    def hitung_denda(self):  # Override
+        bunga = self.invoice.bunga or 0
+        self.denda = self.bunga = round_up(bunga)
+        if self.invoice.jatuhtempotgl:
+            d = Denda(
+                self.tagihan, self.invoice.jatuhtempotgl,
+                self.conf['persen_denda'],
+                self.tgl_bayar.date(), self.invoice)
+            self.bln_tunggakan, self.denda_waktu = d.hitung()
+            self.denda_waktu = round_up(self.denda_waktu)
+            self.denda += self.denda_waktu
+        else:
+            self.bln_tunggakan = None
+        self.discount_denda = self.get_discount_denda()
+        self.denda -= self.discount_denda
+
     def get_discount_denda(self):  # Override
+        self.notes = []
         rek = self.rekening.rekeningkd
         if rek in self.conf.get('rekening_tanpa_denda', []):
             self.notes.append(NOTE_REK.format(rek=rek))
@@ -64,10 +131,6 @@ class Inquiry(BaseInquiry):
         return 0
 
 
-class Reversal(BaseReversal):
-    invoice_id_structure = INVOICE_ID
-
-
 class AvailableInvoice(BaseAvailableInvoice):
     invoice_id_structure = INVOICE_ID