from django.conf import settings
from django.db import models
from django.utils.translation import gettext_lazy as _


class ReportStatus(models.TextChoices):
    SUBMITTED = 'submitted', _('Submitted')
    UNDER_REVIEW = 'under_review', _('Under Review')
    APPROVED = 'approved', _('Approved by Headquarters')
    RETURNED = 'returned', _('Returned for Revision')


class RepresentativeReport(models.Model):
    representative = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
        related_name='diplomacy_reports',
        verbose_name=_('Field Representative')
    )
    title = models.CharField(max_length=255, verbose_name=_('Report Title'))
    region_hub = models.CharField(
        max_length=150,
        verbose_name=_('Regional Hub / Mission Zone'),
        help_text=_('e.g. East Africa Regional Hub, South Asia Bureau, European Cultural Mission')
    )
    period = models.CharField(
        max_length=100,
        verbose_name=_('Reporting Period'),
        help_text=_('e.g. Q1 2026, Muharram 1448 AH, March 2026')
    )
    activities_summary = models.TextField(verbose_name=_('Summary of Activities & Negotiations'))
    centers_visited_count = models.PositiveIntegerField(
        default=0,
        verbose_name=_('Number of Mosques / Centers Visited')
    )
    key_achievements = models.TextField(
        blank=True,
        null=True,
        verbose_name=_('Key Achievements & Milestones')
    )
    challenges_and_needs = models.TextField(
        blank=True,
        null=True,
        verbose_name=_('Challenges, Risks & Logistical Needs')
    )
    attachment = models.FileField(
        upload_to='diplomacy/reports/%Y/%m/',
        blank=True,
        null=True,
        verbose_name=_('Official Report Document (PDF / Word)')
    )
    status = models.CharField(
        max_length=20,
        choices=ReportStatus.choices,
        default=ReportStatus.SUBMITTED,
        verbose_name=_('Review Status')
    )
    feedback_notes = models.TextField(
        blank=True,
        null=True,
        verbose_name=_('Headquarters Feedback & Directives')
    )
    reviewed_by = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        related_name='reviewed_diplomacy_reports',
        verbose_name=_('Reviewed By Officer')
    )
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_('Submitted At'))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_('Updated At'))

    class Meta:
        ordering = ('-created_at',)
        verbose_name = _('Representative Report')
        verbose_name_plural = _('Representative Reports')

    def __str__(self):
        return f"{self.title} - {self.representative} ({self.region_hub}, {self.period})"