from django.db import models

class Patient(models.Model):
    orthanc_id = models.CharField(max_length=255, unique=True)
    patient_id = models.CharField(max_length=255, null=True, blank=True)
    patient_name = models.CharField(max_length=255, null=True, blank=True)
    patient_sex = models.CharField(max_length=10, null=True, blank=True)
    patient_birth_date = models.CharField(max_length=20, null=True, blank=True)
    studies = models.JSONField(null=True, blank=True)  # Массив ID исследований
    patient_metadata = models.JSONField(null=True, blank=True)

    def __str__(self):
        return self.patient_name or "Unknown Patient"

class Series(models.Model):
    orthanc_id = models.CharField(max_length=255, unique=True)
    parent_study = models.CharField(max_length=255)
    patient = models.ForeignKey(Patient, related_name="series", on_delete=models.CASCADE)
    main_dicom_tags = models.JSONField(null=True, blank=True)
    status = models.CharField(max_length=50, null=True, blank=True)
    is_stable = models.BooleanField(default=False)
    last_update = models.CharField(max_length=50, null=True, blank=True)

    def __str__(self):
        return self.main_dicom_tags.get("SeriesDescription", "Unknown Series")

class Instance(models.Model):
    orthanc_id = models.CharField(max_length=255, unique=True)
    parent_series = models.ForeignKey(Series, related_name="instances", on_delete=models.CASCADE)
    file_size = models.IntegerField(null=True, blank=True)
    file_uuid = models.CharField(max_length=255, null=True, blank=True)
    main_dicom_tags = models.JSONField(null=True, blank=True)
    index_in_series = models.IntegerField(null=True, blank=True)

    def __str__(self):
        return self.main_dicom_tags.get("SOPInstanceUID", "Unknown Instance")