from django.db import models
from django.contrib.auth import get_user_model

User = get_user_model()

from django.db import models

from django.db import models

from api.models import UserInfo

class City(models.Model):
    name = models.CharField(max_length=50, verbose_name="城市名称")
    code = models.CharField(max_length=20, unique=True, verbose_name="城市代码")
    description = models.TextField(verbose_name="城市描述", blank=True)
    image = models.ImageField(upload_to='cities/', verbose_name="城市图片", null=True, blank=True)
    is_hot = models.BooleanField(default=False, verbose_name="是否热门")

    # 新增的经纬度字段
    latitude = models.DecimalField(
        max_digits=9,
        decimal_places=6,
        verbose_name="纬度",
        null=True,
        blank=True,
        help_text="例如：北京的纬度是39.9042"
    )
    longitude = models.DecimalField(
        max_digits=9,
        decimal_places=6,
        verbose_name="经度",
        null=True,
        blank=True,
        help_text="例如：北京的经度是116.4074"
    )

    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 = "城市"
        verbose_name_plural = "城市"

    def __str__(self):
        return self.name

class Attraction(models.Model):
    city = models.ForeignKey(City, on_delete=models.CASCADE, related_name='attractions')
    name = models.CharField(max_length=100, verbose_name="景点名称")
    description = models.TextField(verbose_name="景点描述")
    history_significance = models.TextField(verbose_name="历史意义", blank=True)
    learning_point = models.TextField(verbose_name="学习要点", blank=True)
    short_desc = models.CharField(max_length=200, verbose_name="简短描述", blank=True)
    address = models.CharField(max_length=200, verbose_name="地址")
    latitude = models.FloatField(verbose_name="纬度", null=True, blank=True)
    longitude = models.FloatField(verbose_name="经度", null=True, blank=True)
    ticket_price = models.DecimalField(
        max_digits=8,
        decimal_places=2,
        verbose_name="门票价格",
        default=0
    )
    ticket_info = models.CharField(
        max_length=100,
        verbose_name="门票信息",
        blank=True,
        default="凭身份证免费参观"
    )
    open_hours = models.CharField(max_length=100, verbose_name="开放时间", blank=True)
    image = models.ImageField(
        upload_to='attractions/',
        verbose_name="景点图片",
        null=True,
        blank=True
    )
    tags = models.JSONField(default=list, verbose_name="标签")
    history = models.TextField(verbose_name="历史背景", blank=True)
    is_featured = models.BooleanField(default=False, verbose_name="是否特色")
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        verbose_name = "景点"
        verbose_name_plural = "景点"

    def __str__(self):
        return f"{self.name} ({self.city.name})"


class RedTourismPlan(models.Model):
    # 行程状态选项
    STATUS_CHOICES = (
        ('in_progress', '进行中'),
        ('completed', '已完成'),
    )

    user = models.ForeignKey(
        UserInfo,
        on_delete=models.CASCADE,
        related_name='red_tourism_plans',
        verbose_name='关联用户',
        null=True,
        blank=True
    )

    # 新增状态字段
    status = models.CharField(
        max_length=20,
        choices=STATUS_CHOICES,
        default='in_progress',
        verbose_name='行程状态'
    )

    # 其他字段保持不变...
    cities = models.ManyToManyField(
        City,
        related_name='red_tourism_plans',
        verbose_name='关联城市'
    )
    title = models.CharField(max_length=200, verbose_name='行程标题')
    description = models.TextField(verbose_name='行程描述')
    days = models.PositiveIntegerField(verbose_name='天数')
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
    last_updated = models.DateTimeField(auto_now=True, verbose_name='最后更新时间')
    is_red_tourism = models.BooleanField(default=True, verbose_name='是否红色旅游')
    statistics = models.JSONField(default=dict, verbose_name='统计数据')
    education_goals = models.JSONField(default=list, verbose_name='教育目标')
    original_data = models.JSONField(default=dict, verbose_name='原始数据')

    class Meta:
        verbose_name = '红色旅游行程'
        verbose_name_plural = verbose_name
        ordering = ['-created_at']

    def __str__(self):
        return f"{self.title} (用户: {self.user.phone})"

class RedTourismDayPlan(models.Model):
    plan = models.ForeignKey(
        RedTourismPlan,
        on_delete=models.CASCADE,
        related_name='day_plans',
        verbose_name='所属行程',
        null=True,
        blank=True
    )
    day_number = models.PositiveIntegerField(verbose_name='第几天')
    theme = models.CharField(max_length=100, verbose_name='当日主题')
    summary = models.TextField(blank=True, verbose_name='当日总结')
    transport = models.CharField(max_length=50, verbose_name='交通方式')
    travel_tips = models.JSONField(default=list, verbose_name='旅行提示')

    class Meta:
        verbose_name = '红色旅游每日行程'
        verbose_name_plural = verbose_name
        ordering = ['plan', 'day_number']
        unique_together = ('plan', 'day_number')

    def __str__(self):
        return f"{self.plan.title} - 第{self.day_number}天"

class RedTourismSpot(models.Model):
    day_plan = models.ForeignKey(
        RedTourismDayPlan,
        on_delete=models.CASCADE,
        related_name='spots',
        verbose_name='所属日计划',
        null=True,
        blank=True
    )
    spot_id = models.CharField(max_length=50, verbose_name='景点ID')
    name = models.CharField(max_length=100, verbose_name='景点名称')
    description = models.TextField(verbose_name='景点描述')
    address = models.CharField(max_length=200, verbose_name='地址')
    open_hours = models.CharField(max_length=50, verbose_name='开放时间')
    ticket_info = models.CharField(max_length=100, verbose_name='门票信息')
    history_significance = models.TextField(verbose_name='历史意义')
    image = models.URLField(max_length=500, verbose_name='图片URL')
    latitude = models.FloatField(verbose_name='纬度')
    longitude = models.FloatField(verbose_name='经度')
    visit_time = models.CharField(max_length=50, verbose_name='参观时间')
    duration = models.PositiveIntegerField(verbose_name='参观时长(分钟)')
    order = models.PositiveIntegerField(verbose_name='排序')
    visiting_etiquette = models.JSONField(default=list, verbose_name='参观礼仪')
    is_red_tourism = models.BooleanField(default=True, verbose_name='是否红色景点')
    has_checked = models.BooleanField(default=False, verbose_name='是否已打卡')

    class Meta:
        verbose_name = '红色旅游景点'
        verbose_name_plural = verbose_name
        ordering = ['day_plan', 'order']

    def __str__(self):
        return f"{self.name} (第{self.day_plan.day_number}天)"


# models.py
class UserCheckIn(models.Model):
    """用户打卡记录模型"""
    user = models.ForeignKey(
        User,
        on_delete=models.CASCADE,
        verbose_name='用户'
    )
    spot = models.ForeignKey(
        'RedTourismSpot',
        on_delete=models.CASCADE,
        verbose_name='景点'
    )
    plan = models.ForeignKey(
        'RedTourismPlan',
        on_delete=models.CASCADE,
        verbose_name='行程'
    )
    check_in_time = models.DateTimeField(
        auto_now_add=True,
        verbose_name='打卡时间'
    )
    image_url = models.URLField(
        max_length=500,
        blank=True,
        verbose_name='打卡图片URL'
    )
    note = models.TextField(
        blank=True,
        verbose_name='打卡文案',
        default=''
    )
    location = models.JSONField(
        default=dict,
        verbose_name='位置信息'
    )

    class Meta:
        verbose_name = '用户打卡记录'
        verbose_name_plural = verbose_name
        unique_together = ('user', 'spot')  # 防止重复打卡

    def __str__(self):
        return f"{self.user.username}于{self.check_in_time}打卡{self.spot.name}"