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


class GenerationRecord(models.Model):
    """Video generation call record."""
    MODE_CHOICES = [
        ('universal', '全能参考'),
        ('keyframe', '首尾帧'),
    ]
    MODEL_CHOICES = [
        ('seedance_2.0', 'AirDrama'),
        ('seedance_2.0_fast', 'AirDrama Fast'),
    ]
    STATUS_CHOICES = [
        ('queued', '排队中'),
        ('processing', '生成中'),
        ('completed', '已完成'),
        ('failed', '失败'),
    ]

    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
        related_name='generation_records',
        verbose_name='用户',
    )
    task_id = models.UUIDField(default=uuid.uuid4, unique=True, verbose_name='任务ID')
    ark_task_id = models.CharField(max_length=100, blank=True, default='', verbose_name='火山ARK任务ID')
    prompt = models.TextField(blank=True, verbose_name='提示词')
    mode = models.CharField(max_length=20, choices=MODE_CHOICES, verbose_name='创作模式')
    model = models.CharField(max_length=30, choices=MODEL_CHOICES, verbose_name='模型')
    aspect_ratio = models.CharField(max_length=10, verbose_name='宽高比')
    duration = models.IntegerField(verbose_name='视频时长(秒)')
    seconds_consumed = models.FloatField(default=0, verbose_name='消费秒数')
    # ── 金额计费字段（v0.10.0 新增） ──
    tokens_consumed = models.IntegerField(default=0, verbose_name='消耗tokens')
    cost_amount = models.DecimalField(max_digits=12, decimal_places=2, default=0, verbose_name='用户费用(元)')
    base_cost_amount = models.DecimalField(max_digits=12, decimal_places=2, default=0, verbose_name='平台成本(元)')
    frozen_amount = models.DecimalField(max_digits=12, decimal_places=2, default=0, verbose_name='冻结金额(元)')
    resolution = models.CharField(max_length=10, blank=True, default='', verbose_name='分辨率')
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='queued', verbose_name='状态')
    result_url = models.CharField(max_length=1000, blank=True, default='', verbose_name='生成结果URL')
    thumbnail_url = models.CharField(max_length=1000, blank=True, default='', verbose_name='视频缩略图URL')
    error_message = models.TextField(blank=True, default='', verbose_name='错误信息')
    raw_error = models.TextField(blank=True, default='', verbose_name='原始错误信息')
    reference_urls = models.JSONField(default=list, blank=True, verbose_name='参考素材信息')
    is_favorited = models.BooleanField(default=False, verbose_name='已收藏')
    is_deleted = models.BooleanField(default=False, verbose_name='用户已删除')
    seed = models.BigIntegerField(default=-1, verbose_name='种子值')
    created_at = models.DateTimeField(auto_now_add=True, db_index=True, verbose_name='创建时间')
    updated_at = models.DateTimeField(auto_now=True, verbose_name='更新时间')
    completed_at = models.DateTimeField(null=True, blank=True, verbose_name='完成时间')

    class Meta:
        verbose_name = '生成记录'
        verbose_name_plural = '生成记录'
        ordering = ['-created_at']
        indexes = [
            models.Index(fields=['user', 'created_at']),
        ]

    def __str__(self):
        return f'{self.user.username} - {self.task_id}'


class QuotaConfig(models.Model):
    """Global quota configuration (singleton) — Phase 3: seconds + announcement + anomaly detection."""
    default_daily_seconds_limit = models.IntegerField(default=600, verbose_name='默认每日秒数上限')
    default_monthly_seconds_limit = models.IntegerField(default=6000, verbose_name='默认每月秒数上限')
    announcement = models.TextField(blank=True, default='', verbose_name='系统公告')
    announcement_enabled = models.BooleanField(default=False, verbose_name='启用公告')
    max_desktop_sessions = models.IntegerField(default=1, verbose_name='每用户最大桌面端会话数')
    max_mobile_sessions = models.IntegerField(default=0, verbose_name='每用户最大移动端会话数')
    # ── 异常检测全局默认配置 ──
    anomaly_detection_enabled = models.BooleanField(default=False, verbose_name='异常检测总开关')
    r1_enabled_default = models.BooleanField(default=True, verbose_name='R1 默认开关')
    r2_enabled_default = models.BooleanField(default=True, verbose_name='R2 默认开关')
    r2_window_seconds = models.IntegerField(default=3600, verbose_name='R2 默认时间窗口(秒)')
    r3_enabled_default = models.BooleanField(default=True, verbose_name='R3 默认开关')
    r3_window_seconds = models.IntegerField(default=3600, verbose_name='R3 默认时间窗口(秒)')
    r3_max_count = models.IntegerField(default=10, verbose_name='R3 默认最大登录次数')
    r4_enabled_default = models.BooleanField(default=True, verbose_name='R4 默认开关')
    r4_window_seconds = models.IntegerField(default=3600, verbose_name='R4 默认时间窗口(秒)')
    r4_city_count = models.IntegerField(default=5, verbose_name='R4 默认预期外城市数')
    r5_enabled_default = models.BooleanField(default=True, verbose_name='R5 默认开关')
    r5_days = models.IntegerField(default=7, verbose_name='R5 默认统计天数')
    r5_country_count = models.IntegerField(default=10, verbose_name='R5 默认海外国家数')
    feishu_alert_mobiles = models.CharField(max_length=500, blank=True, default='', verbose_name='飞书告警接收人手机号')
    sms_alert_mobiles = models.CharField(max_length=500, blank=True, default='', verbose_name='短信告警手机号（预留）')
    alert_cooldown_seconds = models.IntegerField(default=1800, verbose_name='告警冷却时间(秒)')
    # ── 计费全局配置（v0.10.0 新增） ──
    default_daily_generation_limit = models.IntegerField(default=50, verbose_name='默认每日生成次数')
    default_monthly_generation_limit = models.IntegerField(default=1500, verbose_name='默认每月生成次数')
    base_token_price = models.DecimalField(max_digits=10, decimal_places=2, default=46, verbose_name='基础token单价-不含视频(元/百万tokens)')
    base_token_price_video = models.DecimalField(max_digits=10, decimal_places=2, default=28, verbose_name='基础token单价-含视频(元/百万tokens)')
    base_token_price_fast = models.DecimalField(max_digits=10, decimal_places=2, default=37, verbose_name='Fast单价-不含视频(元/百万tokens)')
    base_token_price_fast_video = models.DecimalField(max_digits=10, decimal_places=2, default=22, verbose_name='Fast单价-含视频(元/百万tokens)')
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        verbose_name = '系统配置'
        verbose_name_plural = '系统配置'

    def save(self, *args, **kwargs):
        self.pk = 1
        super().save(*args, **kwargs)

    def __str__(self):
        return f'全局配额: {self.default_daily_seconds_limit}s/日, {self.default_monthly_seconds_limit}s/月'


class AssetGroup(models.Model):
    """虚拟人像素材组 — 一个角色对应一个组。"""
    team = models.ForeignKey(
        'accounts.Team', on_delete=models.CASCADE,
        related_name='asset_groups', verbose_name='所属团队',
    )
    remote_group_id = models.CharField(max_length=100, default='', verbose_name='火山Group ID')
    name = models.CharField(max_length=100, default='', verbose_name='角色名')
    description = models.CharField(max_length=300, blank=True, default='', verbose_name='描述')
    thumbnail_url = models.CharField(max_length=1000, blank=True, default='', verbose_name='缩略图URL')
    created_by = models.ForeignKey(
        settings.AUTH_USER_MODEL, on_delete=models.SET_NULL,
        null=True, blank=True, related_name='created_asset_groups', verbose_name='创建人',
    )
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')

    class Meta:
        verbose_name = '素材组'
        verbose_name_plural = '素材组'
        ordering = ['-created_at']

    def __str__(self):
        return f'{self.team.name} - {self.name}'


class Asset(models.Model):
    """虚拟人像素材 — 图片/视频/音频。"""
    STATUS_CHOICES = [
        ('processing', '处理中'),
        ('active', '可用'),
        ('failed', '失败'),
    ]
    ASSET_TYPE_CHOICES = [
        ('Image', '图像'),
        ('Video', '视频'),
        ('Audio', '音频'),
    ]

    group = models.ForeignKey(
        AssetGroup, on_delete=models.CASCADE,
        related_name='assets', verbose_name='所属素材组',
    )
    remote_asset_id = models.CharField(max_length=100, default='', verbose_name='火山Asset ID')
    name = models.CharField(max_length=100, default='', verbose_name='素材名称')
    url = models.CharField(max_length=1000, blank=True, default='', verbose_name='素材URL')
    asset_type = models.CharField(max_length=10, choices=ASSET_TYPE_CHOICES, default='Image', verbose_name='素材类型')
    thumbnail_url = models.CharField(max_length=1000, blank=True, default='', verbose_name='缩略图URL')
    duration = models.FloatField(default=0, verbose_name='时长（秒）')
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='processing', verbose_name='状态')
    error_message = models.CharField(max_length=500, blank=True, default='', verbose_name='错误信息')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')

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

    def __str__(self):
        return f'{self.group.name} - {self.name}'