# coding=utf-8
from __future__ import unicode_literals

import uuid

from django.contrib.auth.models import User
from django.db import models
from django.utils import timezone

from base.models import Land


class Category(models.Model):
    NAME_CHOICES = (
        (u'基础地理数据', u'基础地理数据'),
        (u'遥感数据', u'遥感数据'),
        (u'G214国道', u'G214国道'),
        (u'花石峡冻土观测站', u'花石峡冻土观测站'),
        (u'青海冻土观测基地', u'青海冻土观测基地'),
    )
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)

    name = models.CharField('名称', max_length=128, choices=NAME_CHOICES)

    created = models.DateTimeField(auto_now=True)

    updated = models.DateTimeField(auto_now=True)

    def __unicode__(self):
        return self.name

    class Meta:
        verbose_name_plural = u'分类'


# 元数据作者
class Contact(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    # 姓名
    name = models.CharField(u'姓名', max_length=50)
    # 单位
    unit = models.CharField(u'单位', max_length=128)

    # 邮件
    mail = models.EmailField(u'邮箱', max_length=50)
    # 电话
    phone = models.CharField(u'电话', max_length=50)

    created = models.DateTimeField(u'创建时间', auto_now=True)

    updated = models.DateTimeField(u'更新时间', auto_now=True)

    def __unicode__(self):
        return self.name

    class Meta:
        verbose_name_plural = u'元数据作者'


# tag
class Tag(models.Model):
    TYPE_CHOICES = (
        (1, u'主题'),
        (2, u'学科'),
        (3, u'位置'),
    )
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    name = models.CharField(max_length=100)
    type = models.IntegerField(choices=TYPE_CHOICES)

    def __unicode__(self):
        return self.name

    class Meta:
        verbose_name_plural = u'标签'


class Metadata(models.Model):
    # 数据分类
    category = models.ForeignKey(Category, verbose_name='数据分类')

    authors = models.ManyToManyField(Contact, related_name="authors", verbose_name='元数据作者', blank=True)

    contributor = models.ManyToManyField(Contact, related_name="contributor", verbose_name='数据贡献者', blank=True)

    manager = models.ManyToManyField(Contact, related_name="manager", verbose_name='数据管理者', blank=True)

    land = models.ForeignKey(Land, verbose_name='试验场', blank=True, null=True)

    tags = models.ManyToManyField(Tag)

    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4, editable=False)

    title_cn = models.CharField(u'标题', max_length=128)
    # 数据集摘要
    abstract = models.TextField(u'数据集摘要')
    # 数据源描述
    description = models.TextField(u'数据源描述')
    # 目录
    table_of_contents = models.CharField(u'目录', max_length=128, blank=True)
    # 缩略图
    thumbnail = models.ImageField('上传图片', upload_to='images', blank=True)

    # 地理范围东
    acq_lon_east = models.FloatField(u'地理范围东', blank=True)
    # 地理范围南
    acq_lat_south = models.FloatField(u'地理范围南', blank=True)
    # 地理范围西
    acq_lon_west = models.FloatField(u'地理范围西', blank=True)
    # 地理范围北
    acq_lat_north = models.FloatField(u'地理范围北', blank=True)
    # 点击量
    hit_count = models.IntegerField(u'点击量', default=0)
    # 出版信息
    publisher = models.CharField(u'出版信息', max_length=200, blank=True)

    created = models.DateTimeField(u'创建时间', auto_now=True)

    updated = models.DateTimeField(u'更新时间', auto_now=True)

    # 是否观测数据
    type = models.IntegerField(u'是否观测数据', default=0)

    def __unicode__(self):
        return self.title_cn

    def image_img(self):
        if self.thumbnail:
            return u'<img src="%s" />' % self.thumbnail.url
        else:
            return '(Sin image)'

    image_img.short_description = 'Image'
    image_img.allow_tags = True

    class Meta:
        verbose_name_plural = u'元数据'


# 数据实体
class DataEntity(models.Model):
    # id
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)

    file_name = models.CharField('文件名', max_length=200)
    # 原始文件名
    origin_file_name = models.CharField('原文件名', max_length=200)

    # 文件大小
    file_size = models.IntegerField('文件大小')

    created = models.DateTimeField('创建时间', auto_now=True)

    updated = models.DateTimeField('更新时间', auto_now=True)

    metadata = models.ForeignKey(Metadata)

    class Meta:
        verbose_name_plural = u'数据实体'


# 评论
class Comment(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    metadata = models.ForeignKey(Metadata)
    user = models.ForeignKey(User)
    content = models.TextField(blank=True, null=True)
    created = models.DateTimeField(default=timezone.now, blank=True)
    updated = models.DateTimeField(default=timezone.now, blank=True)


# 加入收藏
class Favorite(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    user = models.ForeignKey(User)
    metadata = models.OneToOneField(Metadata)
    created = models.DateField(u'创建时间', auto_now_add=True, null=True)
    updated = models.DateField(u'更新时间', auto_now=True)


# 购物车
class Cart(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    user = models.OneToOneField(User)


class Order(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    user = models.ForeignKey(User)
    real_name = models.CharField(u'真实姓名', max_length=200, null=True)
    phone = models.CharField(u'电话', max_length=200, null=True)
    email = models.CharField(u'邮箱', max_length=50, null=True)
    unit = models.CharField(u'单位', max_length=200, null=True)
    address = models.CharField(u'地址', max_length=200, null=True)
    post_code = models.CharField(u'邮编', max_length=50, null=True)
    purpose = models.TextField(null=True)
    status = models.IntegerField(default=0)


class LineItem(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    quantity = models.IntegerField(default=0)
    cart = models.ForeignKey(Cart, null=True)
    metadata = models.OneToOneField(Metadata)
    order = models.ForeignKey(Order, null=True)


class Navigation(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    name = models.CharField('名称', max_length=128)
    order_by = models.IntegerField(default=0)
    parent = models.ForeignKey('self', null=True, blank=True, on_delete=models.CASCADE)

    def __unicode__(self):
        return self.name