from django.db import models


class Issue(models.Model):
    class Status(models.TextChoices):
        OPEN = "open"
        IN_PROGRESS = "in_progress"
        RESOLVED = "resolved"
        CLOSED = "closed"

    class Priority(models.TextChoices):
        LOW = "low"
        MEDIUM = "medium"
        HIGH = "high"

    project = models.ForeignKey(
        "projects.Project",
        on_delete=models.CASCADE,
        related_name="issues",
    )
    reporter = models.ForeignKey(
        "accounts.CustomUser",
        on_delete=models.CASCADE,
        related_name="reported_issues",
    )
    assignee = models.ForeignKey(
        "accounts.CustomUser",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="assigned_issues",
    )
    title = models.CharField(max_length=255)
    description = models.TextField(blank=True)
    status = models.CharField(max_length=20, choices=Status.choices, default=Status.OPEN)
    priority = models.CharField(max_length=20, choices=Priority.choices, default=Priority.MEDIUM)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        ordering = ["-created_at"]

    def __str__(self):
        return self.title


class IssueComment(models.Model):
    issue = models.ForeignKey(Issue, on_delete=models.CASCADE, related_name="comments")
    author = models.ForeignKey("accounts.CustomUser", on_delete=models.CASCADE)
    body = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        ordering = ["created_at"]

    def __str__(self):
        return f"Comment by {self.author} on {self.issue}"