from datetime import date
from pathlib import Path

from django.test import TestCase, override_settings
from pypdf import PdfReader

from workflows.models import FormFieldConfig, FormSectionConfig, OffboardingRequest, OnboardingRequest
from workflows.tasks import _generate_offboarding_pdf, _generate_onboarding_pdf


@override_settings(PDF_OUTPUT_DIR=Path('/tmp/onoff_test_pdfs'))
class PDFGenerationTests(TestCase):
    def _extract_pdf_text(self, pdf_path: Path) -> str:
        reader = PdfReader(str(pdf_path))
        return "\n".join((page.extract_text() or "") for page in reader.pages)

    def test_onboarding_pdf_respects_hidden_section_and_field(self):
        FormSectionConfig.objects.update_or_create(
            form_type='onboarding',
            section_key='itsetup',
            defaults={'is_visible': False},
        )
        FormFieldConfig.objects.update_or_create(
            form_type='onboarding',
            field_name='job_title',
            defaults={'is_visible': False},
        )
        request_obj = OnboardingRequest.objects.create(
            full_name='Max Mustermann',
            gender='herr',
            job_title='Consultant',
            department='IT-Service',
            work_email='max.mustermann@workdock.de',
            contract_start=date(2026, 11, 1),
            employment_type='unbefristet',
            needed_devices='Laptop\nMonitor',
            onboarded_by_email='requester@workdock.de',
            onboarded_by_name='Mia Beispiel',
            agreement='accepted',
        )

        pdf_path = _generate_onboarding_pdf(request_obj)
        text = self._extract_pdf_text(pdf_path)

        self.assertIn('Max Mustermann', text)
        self.assertIn('IT-Service', text)
        self.assertIn('Stammdaten', text)
        self.assertNotIn('Consultant', text)
        self.assertNotIn('Laptop', text)
        self.assertNotIn('IT-Setup', text)
        self.assertNotIn('1. Stammdaten', text)
        self.assertNotIn('Vorname', text)
        self.assertNotIn('Nachname', text)
        self.assertNotIn('onboarded_by_email', text)

    def test_offboarding_pdf_uses_dynamic_sections(self):
        request_obj = OffboardingRequest.objects.create(
            full_name='Lara Beispiel',
            work_email='lara.beispiel@workdock.de',
            department='IT-Service',
            job_title='Engineer',
            last_working_day=date(2026, 12, 31),
            notes='Bitte Accounts sperren.',
            requested_by_email='admin@workdock.de',
            requested_by_name='Nina Admin',
        )

        pdf_path = _generate_offboarding_pdf(request_obj)
        text = self._extract_pdf_text(pdf_path)

        self.assertIn('Lara Beispiel', text)
        self.assertIn('Engineer', text)
        self.assertIn('31. Dezember 2026', text)
        self.assertIn('Bitte Accounts sperren.', text)
        self.assertNotIn('1. Mitarbeitende', text)