from django.db import models
import uuid
from django.utils import timezone
from apps.user.models import User


class Conversation(models.Model):
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='conversations')
    is_submitted = models.BooleanField(default=False)
    created_at = models.DateTimeField(default=timezone.now)
    
    class Meta:
        verbose_name = '对话'
        verbose_name_plural = '对话'
    
    def __str__(self):
        return f"Conversation {self.id[:8]}"


class Message(models.Model):
    ROLE_CHOICES = (
        ('user', '用户'),
        ('assistant', '助手'),
        ('system', '系统'),
    )
    
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='messages')
    role = models.CharField(max_length=20, choices=ROLE_CHOICES)
    content = models.TextField()
    timestamp = models.DateTimeField(default=timezone.now)
    
    class Meta:

        verbose_name = '消息'
        verbose_name_plural = '消息'
        ordering = ['timestamp']
    
    def __str__(self):
        return f"{self.role}: {self.content[:50]}..."


class Feedback(models.Model):
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    message = models.ForeignKey(Message, on_delete=models.CASCADE, related_name='feedback')
    conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='feedback')
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='feedback')
    feedback_value = models.IntegerField()
    timestamp = models.DateTimeField(default=timezone.now)
    
    class Meta:

        verbose_name = '反馈'
        verbose_name_plural = '反馈'
    
    def __str__(self):
        return f"Feedback on {self.message.id[:8]}"


class FeedbackTag(models.Model):
    TAG_TYPE_CHOICES = (
        ('positive', '正面'),
        ('negative', '负面'),
    )
    
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    tag_name = models.CharField(max_length=50, unique=True)
    tag_type = models.CharField(max_length=20, choices=TAG_TYPE_CHOICES)
    description = models.TextField(blank=True, null=True)
    created_at = models.DateTimeField(default=timezone.now)
    
    class Meta:

        verbose_name = '反馈标签'
        verbose_name_plural = '反馈标签'
    
    def __str__(self):
        return f"{self.tag_name} ({self.tag_type})"


class DetailedFeedback(models.Model):
    FEEDBACK_TYPE_CHOICES = (
        ('positive', '正面'),
        ('negative', '负面'),
        ('neutral', '中性'),
    )
    
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    message = models.ForeignKey(Message, on_delete=models.CASCADE, related_name='detailed_feedback')
    conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='detailed_feedback')
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='detailed_feedback')
    feedback_type = models.CharField(max_length=20, choices=FEEDBACK_TYPE_CHOICES)
    feedback_tags = models.TextField(blank=True, null=True)  # JSON格式存储多个标签
    custom_tags = models.TextField(blank=True, null=True)
    custom_content = models.TextField(blank=True, null=True)
    is_inline = models.BooleanField(default=True)
    created_at = models.DateTimeField(default=timezone.now)
    updated_at = models.DateTimeField(default=timezone.now)
    
    class Meta:

        verbose_name = '详细反馈'
        verbose_name_plural = '详细反馈'
    
    def __str__(self):
        return f"{self.feedback_type} feedback on {self.message.id[:8]}"


class ConversationSubmission(models.Model):
    STATUS_CHOICES = (
        ('submitted', '已提交'),
        ('reviewed', '已审核'),
        ('accepted', '已接受'),
        ('rejected', '已拒绝'),
    )
    
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='submissions')
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='submissions')
    title = models.CharField(max_length=255, blank=True, null=True)
    description = models.TextField(blank=True, null=True)
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='submitted')
    quality_score = models.IntegerField(null=True, blank=True)
    reviewer = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, blank=True, related_name='reviewed_submissions')
    reviewer_notes = models.TextField(blank=True, null=True)
    submitted_at = models.DateTimeField(default=timezone.now)
    reviewed_at = models.DateTimeField(null=True, blank=True)
    created_at = models.DateTimeField(default=timezone.now)
    updated_at = models.DateTimeField(default=timezone.now)
    
    class Meta:

        verbose_name = '对话提交'
        verbose_name_plural = '对话提交'
    
    def __str__(self):
        return f"Submission for {self.conversation.id[:8]}"


class ConversationEvaluation(models.Model):
    LOGICAL_CHOICES = (
        ('yes', '是'),
        ('no', '否'),
        ('unsure', '不确定'),
    )
    
    NEEDS_CHOICES = (
        ('yes', '是'),
        ('no', '否'),
        ('partially', '部分'),
    )
    
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='evaluations')
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='evaluations')
    overall_feeling = models.TextField(blank=True, null=True)
    has_logical_issues = models.CharField(max_length=10, choices=LOGICAL_CHOICES)
    needs_satisfied = models.CharField(max_length=10, choices=NEEDS_CHOICES)
    created_at = models.DateTimeField(default=timezone.now)
    updated_at = models.DateTimeField(default=timezone.now)
    
    class Meta:

        verbose_name = '对话评估'
        verbose_name_plural = '对话评估'
        unique_together = ('conversation', 'user')
    
    def __str__(self):
        return f"Evaluation for {self.conversation.id[:8]}"


class SystemConfig(models.Model):
    CONFIG_TYPE_CHOICES = (
        ('string', '字符串'),
        ('integer', '整数'),
        ('float', '浮点数'),
        ('boolean', '布尔值'),
        ('json', 'JSON'),
    )
    
    id = models.CharField(primary_key=True, max_length=36, default=uuid.uuid4, editable=False)
    config_key = models.CharField(max_length=50, unique=True)
    config_value = models.TextField(blank=True, null=True)
    config_type = models.CharField(max_length=20, choices=CONFIG_TYPE_CHOICES, default='string')
    description = models.TextField(blank=True, null=True)
    created_at = models.DateTimeField(default=timezone.now)
    updated_at = models.DateTimeField(default=timezone.now)
    
    class Meta:
        verbose_name = '系统配置'
        verbose_name_plural = '系统配置'
    
    def __str__(self):
        return self.config_key