from django.db import models
from django.contrib.auth import get_user_model
import uuid

User = get_user_model()

# Create your models here.
class PaymentGateway(models.Model):
    payment_gateway_id = models.CharField(max_length=250)
    payment_gateway_name = models.CharField(max_length=250)
    payment_gateway_description = models.TextField()
    payment_gateway_logo = models.ImageField(upload_to='payment_gateways/', blank=True, null=True)
    payment_gateway_url = models.URLField(blank=True, null=True)
    payment_gateway_api_key = models.CharField(max_length=250)
    payment_gateway_api_secret = models.CharField(max_length=250)
    payment_gateway_api_url = models.URLField(blank=True, null=True)
    payment_gateway_api_version = models.CharField(max_length=250)
    payment_gateway_api_method = models.CharField(max_length=250)

    is_active = models.BooleanField(default=True)
    
    created_date = models.DateField(auto_now_add=True)
    updated_date = models.DateField(auto_now=True)

    gateway_priority = models.IntegerField(default=0)

    def __str__(self):
        return self.payment_gateway_name

    def __save__(self):
        if not self.payment_gateway_id:
            self.payment_gateway_id = str(uuid.uuid4().hex[:10]).upper()
        super().save(*args, **kwargs)

class PaymentGatewayCredentials(models.Model):
    payment_gateway = models.ForeignKey(PaymentGateway, on_delete=models.CASCADE)
    payment_gateway_credentials_value = models.TextField()
    created_date = models.DateField(auto_now_add=True)
    updated_date = models.DateField(auto_now=True)

    def __str__(self):
        return self.payment_gateway.payment_gateway_name + " - " + self.payment_gateway_credentials_value


class PaymentTransaction(models.Model):
    payment_transaction_id = models.CharField(max_length=250)
    payment_type = models.CharField(max_length=250, choices=[
        ('credit', 'Credit'),
        ('debit', 'Debit'),
        ('transfer', 'Transfer'),
        ('other', 'Other'),
    ])
    payment_sub_type = models.CharField(max_length=250, choices=[
        ('online', 'Online'),
        ('offline', 'Offline'),
        ('other', 'Other'),
    ])
    payment_gateway = models.ForeignKey(PaymentGateway, on_delete=models.CASCADE)
    payment_transaction_amount = models.DecimalField(max_digits=10, decimal_places=2)
    payment_transaction_currency = models.CharField(max_length=10)
    payment_transaction_status = models.CharField(max_length=250, choices=[
        ('pending', 'Pending'),
        ('completed', 'Completed'),
        ('failed', 'Failed'),
        ('refunded', 'Refunded'),
        ('cancelled', 'Cancelled'),
    ])
    payment_transaction_date = models.DateField(auto_now_add=True)
    payment_transaction_time = models.TimeField(auto_now_add=True)
    payment_transaction_notes = models.TextField(blank=True, null=True)
    payment_transaction_raw_data = models.JSONField(blank=True, null=True)
    payment_transaction_response = models.JSONField(blank=True, null=True)
    payment_transaction_error = models.JSONField(blank=True, null=True)

    last_updated_date = models.DateField(blank=True, null=True)
    last_updated_time = models.TimeField(blank=True, null=True)
    last_updated_by = models.ForeignKey(User, on_delete=models.CASCADE, blank=True, null=True)

    def __str__(self):
        return self.payment_gateway.payment_gateway_name + " - " + self.payment_transaction_id

    def __save__(self):
        if not self.payment_transaction_id:
            self.payment_transaction_id = str(self.payment_gateway.payment_gateway_name[:3].upper()) + str(uuid.uuid4().hex[:10]).upper()
        super().save(*args, **kwargs)