from django.db import models
from simple_history.models import HistoricalRecords
from users.models import Employee


class Intervention(models.Model):
    STATUS_CHOICES = [
        ("nou", "Nou (Deschis)"),
        ("in_lucru", "În lucru"),
        ("in_asteptare", "În așteptare"),
        ("solutionat", "Soluționat"),
        ("inchis", "Închis"),
    ]

    PRIORITY_CHOICES = [
        ("scazuta", "Scăzută"),
        ("medie", "Medie"),
        ("ridicata", "Ridicată"),
        ("critica", "Critică (Urgență)"),
    ]

    title = models.CharField(max_length=255, verbose_name="Titlu scurt / Subiect")
    description = models.TextField(verbose_name="Descrierea problemei")

    # Tracking the timeline
    created_at = models.DateTimeField(auto_now_add=True, verbose_name="Data raportării")
    updated_at = models.DateTimeField(auto_now=True, verbose_name="Ultima actualizare")
    resolved_at = models.DateTimeField(
        null=True, blank=True, verbose_name="Data soluționării"
    )

    status = models.CharField(
        max_length=20, choices=STATUS_CHOICES, default="nou", verbose_name="Stare"
    )
    priority = models.CharField(
        max_length=20,
        choices=PRIORITY_CHOICES,
        default="medie",
        verbose_name="Prioritate",
    )

    # People involved
    reported_by = models.ForeignKey(
        Employee,
        on_delete=models.CASCADE,
        related_name="reported_interventions",
        verbose_name="Raportat de (Utilizator)",
    )
    assigned_to_it = models.CharField(
        max_length=150, blank=True, null=True, verbose_name="Atribuit către (IT)"
    )

    resolution_notes = models.TextField(
        blank=True, null=True, verbose_name="Note de soluționare"
    )

    history = HistoricalRecords()

    def __str__(self):
        return f"Ticket #{self.id} - {self.title} ({self.get_status_display()})"

    class Meta:
        verbose_name = "Intervenție Tehnică"
        verbose_name_plural = "Intervenții Tehnice"
        ordering = ["-created_at"]