from django.db import models
from django.conf import settings


class BugReport(models.Model):
    PRIORITY_CHOICES = [
        ('high', '高'),
        ('medium', '中'),
        ('low', '低'),
    ]

    STATUS_CHOICES = [
        ('pending', '待处理'),
        ('processing', '处理中'),
        ('resolved', '已解决'),
        ('rejected', '已拒绝'),
    ]

    TYPE_CHOICES = [
        ('feature', '功能问题'),
        ('ui', '界面问题'),
        ('performance', '性能问题'),
        ('other', '其他'),
    ]

    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
        related_name='bug_reports',
        verbose_name='用户'
    )
    title = models.CharField(max_length=200, verbose_name='问题标题')
    bug_type = models.CharField(max_length=20, choices=TYPE_CHOICES, verbose_name='问题类型')
    priority = models.CharField(max_length=10, choices=PRIORITY_CHOICES, verbose_name='优先级')
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='pending', verbose_name='状态')
    description = models.TextField(verbose_name='详细描述')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
    updated_at = models.DateTimeField(auto_now=True, verbose_name='更新时间')

    class Meta:
        verbose_name = 'Bug反馈'
        verbose_name_plural = 'Bug反馈'
        ordering = ['-created_at']

    def __str__(self):
        return f"[{self.get_status_display()}] {self.title}"


class BugReportImage(models.Model):
    bug_report = models.ForeignKey(
        BugReport,
        on_delete=models.CASCADE,
        related_name='images',
        verbose_name='Bug反馈'
    )
    image = models.ImageField(upload_to='bug_reports/%Y/%m/', verbose_name='图片')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='上传时间')

    class Meta:
        verbose_name = 'Bug反馈图片'
        verbose_name_plural = 'Bug反馈图片'

    def __str__(self):
        return f"图片 - {self.bug_report.title}"


class BugReportAttachment(models.Model):
    bug_report = models.ForeignKey(
        BugReport,
        on_delete=models.CASCADE,
        related_name='attachments',
        verbose_name='Bug反馈'
    )
    file = models.FileField(upload_to='bug_reports/attachments/%Y/%m/', verbose_name='附件')
    filename = models.CharField(max_length=255, verbose_name='文件名')
    file_size = models.PositiveIntegerField(verbose_name='文件大小(字节)')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='上传时间')

    class Meta:
        verbose_name = 'Bug反馈附件'
        verbose_name_plural = 'Bug反馈附件'

    def __str__(self):
        return self.filename


class BugReportComment(models.Model):
    bug_report = models.ForeignKey(
        BugReport,
        on_delete=models.CASCADE,
        related_name='comments',
        verbose_name='Bug反馈'
    )
    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
        related_name='bug_comments',
        verbose_name='用户'
    )
    content = models.TextField(verbose_name='回复内容')
    is_admin = models.BooleanField(default=False, verbose_name='是否管理员回复')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='回复时间')

    class Meta:
        verbose_name = 'Bug反馈回复'
        verbose_name_plural = 'Bug反馈回复'
        ordering = ['created_at']

    def __str__(self):
        return f"回复 - {self.bug_report.title}"


class BugReportCommentImage(models.Model):
    comment = models.ForeignKey(
        BugReportComment,
        on_delete=models.CASCADE,
        related_name='images',
        verbose_name='回复'
    )
    image = models.ImageField(upload_to='bug_comments/%Y/%m/', verbose_name='图片')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='上传时间')

    class Meta:
        verbose_name = '回复图片'
        verbose_name_plural = '回复图片'

    def __str__(self):
        return f"回复图片 - {self.comment}"


class BugReportCommentAttachment(models.Model):
    comment = models.ForeignKey(
        BugReportComment,
        on_delete=models.CASCADE,
        related_name='attachments',
        verbose_name='回复'
    )
    file = models.FileField(upload_to='bug_comments/attachments/%Y/%m/', verbose_name='附件')
    filename = models.CharField(max_length=255, verbose_name='文件名')
    file_size = models.PositiveIntegerField(verbose_name='文件大小(字节)')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='上传时间')

    class Meta:
        verbose_name = '回复附件'
        verbose_name_plural = '回复附件'

    def __str__(self):
        return self.filename