from django.db import models
from pxy_openai.assistants import OpenAIAssistant

class FacebookPageAssistant(models.Model):
    """
    Model to link a Facebook page to an OpenAI assistant and manage webhook subscriptions.
    """
    page_id = models.CharField(max_length=100, unique=True, help_text="Unique ID of the Facebook page")
    page_name = models.CharField(max_length=200, help_text="Name of the Facebook page")
    assistant = models.ForeignKey('pxy_openai.OpenAIAssistant', on_delete=models.CASCADE, related_name="facebook_pages")
    is_subscribed = models.BooleanField(default=False, help_text="Indicates if the page is subscribed to webhooks")
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return f"{self.page_name} ({self.page_id}) -> {self.assistant.name}"

class EventType(models.Model):
    """
    Catalog of possible event types for FacebookPageAssistant.
    """
    code = models.CharField(
        max_length=50,
        unique=True,
        help_text="Machine-readable code for the event type (e.g. 'comment', 'share')"
    )
    label = models.CharField(
        max_length=100,
        help_text="Human-readable label for the event type"
    )

    def __str__(self):
        return self.label


class FacebookEvent(models.Model):
    """
    Log of individual events (comments, shares, etc.) for a Facebook page.
    """
    page = models.ForeignKey(
        FacebookPageAssistant,
        on_delete=models.CASCADE,
        related_name="events"
    )
    event_type = models.ForeignKey(
        EventType,
        on_delete=models.PROTECT,
        related_name="facebook_events"
    )
    sender_id = models.CharField(
        max_length=100,
        blank=True, null=True,
        help_text="ID of the user who triggered the event"
    )
    object_id = models.CharField(
        max_length=100,
        help_text="Identifier of the comment or share object"
    )
    message = models.TextField(
        blank=True, null=True,
        help_text="Text content (for comments) or message attached to the event"
    )
    timestamp = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"{self.page.page_name}: {self.event_type.code} @ {self.timestamp:%Y-%m-%d %H:%M}"