from django.shortcuts import render
from django.template.loader import render_to_string
from django.http import HttpResponse, StreamingHttpResponse, JsonResponse
from django.core.mail import EmailMessage
from django.conf import settings
import logging 
import json
from hrm.models import *

logger = logging.getLogger(__name__)

def sendMail(subject, message, to_email, employee, absence_days, file):
    logger.info('Sending Mail')
    subject = subject
    emailMessage = render_to_string('email/email_base.html', {'title': subject, 'message': message, 'employee': employee, "absence_days": absence_days})
    from_mail = settings.DEFAULT_FROM_EMAIL
    msg = EmailMessage(subject, emailMessage, from_mail, [to_email])
    if file:
        if type(file) == list:
            for f in file:
                msg.attach_file(f)
        else:
            msg.attach_file(file)
    msg.content_subtype='html'
    msg.send()    
    
def get_existing_holidays(request):
    try:
        employee_id = request.GET.get('employee_id')
        emp = employee.objects.get(id=employee_id)
        dept_emp = employee.objects.filter(department__name=emp.department)
        existing = []
        for e in dept_emp:
            ext = absence_days.objects.filter(taken_by=e)
            for ex in ext:
                name = f"{ex.taken_by.employee.first_name} {ex.taken_by.employee.last_name}"
                existing.append({"title": name, "start": str(ex.date_from), "end":str(ex.date_to)})
        response = JsonResponse(existing, safe=False)
        return response
    except Exception as e:
        logger.error(repr(e))
        messageTitle = "Oops!"
        messageStatus = 'text-bg-danger'
        message = str(repr(e))
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response
    
def toggle_link(request):
    try:
        data = json.loads(request.POST.get('data', ''))
        print(f"link_id={data['link_id']}")
        link = homepage_links.objects.get(id=data['link_id'])
        if data['checked'] == True:
            link.enabled=True
        elif data['checked'] == False: 
            link.enabled=False
        link.save()
        messageTitle = "Success"
        messageStatus = 'text-bg-success'
        message = f"{link.name} has been toggled"
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response
    except Exception as e:
        logger.error(repr(e))
        messageTitle = "Oops!"
        messageStatus = 'text-bg-danger'
        message = str(repr(e))
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response  
    
def get_links(request):
    try:
        links=[]
        for link in homepage_links.objects.all():
            links.append({'id': link.id, 'name': link.name, 'link': link.link, 'enabled': link.enabled})
        response = JsonResponse({'links':links})
        return response
    except Exception as e:
        logger.error(repr(e))
        messageTitle = "Oops!"
        messageStatus = 'text-bg-danger'
        message = str(repr(e))
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response 

def add_homepage_link(request):
    try:
        data = json.loads(request.POST.get('data', ''))
        link = homepage_links.objects.create(
            name=data['name'],
            link=data['link'],
            enabled=data['enabled']
        )
        messageTitle = "Success"
        messageStatus = 'text-bg-success'
        message = f"{link.name} has been created"
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response
    except Exception as e:
        logger.error(repr(e))
        messageTitle = "Oops!"
        messageStatus = 'text-bg-danger'
        message = str(repr(e))
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response 

def delete_link(request):
    try:
        data = json.loads(request.POST.get('data', ''))
        link = homepage_links.objects.get(id = data['link_id'])
        link.delete()
        messageTitle = "Success"
        messageStatus = 'text-bg-warning'
        message = f"{link.name} has been deleted"
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response
    except Exception as e:
        logger.error(repr(e))
        messageTitle = "Oops!"
        messageStatus = 'text-bg-danger'
        message = str(repr(e))
        response = JsonResponse({'messageTitle':messageTitle, 'message': message, 'messageStatus':messageStatus})
        return response