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

# Create your models here.
from dvadmin.utils.models import CoreModel


class CrudBookModel(CoreModel):
    title = models.CharField(max_length=255, verbose_name="书名")
    sub_title = models.CharField(max_length=255, verbose_name="副标题", null=True, blank=True)
    series = models.CharField(max_length=255, verbose_name="系列丛书", null=True, blank=True)
    author = models.CharField(max_length=255, verbose_name="作者")
    translator = models.CharField(max_length=255, verbose_name="译者", null=True, blank=True)
    subject = models.CharField(max_length=255, verbose_name="学科")
    publisher = models.CharField(max_length=255, verbose_name="出版社")
    abstract = models.CharField(max_length=255, verbose_name="内容摘要", null=True, blank=True)
    language = models.CharField(max_length=255, verbose_name="语种")
    edition = models.IntegerField(verbose_name="版次", null=True, blank=True)
    isbn = models.IntegerField(verbose_name="ISBN", null=True, blank=True)
    # create_time = models.DateField(verbose_name="创建时间")
    # create_by = models.IntegerField(verbose_name="创建者编号", default=1)
    # update_time = models.DateField(verbose_name="更新时间", null=True, blank=True)
    # update_by = models.IntegerField(verbose_name="更新用户编号", null=True, blank=True)
    # image = models.ImageField(verbose_name="封面", null=True, blank=True)
    image = models.CharField(max_length=255,verbose_name="封面", null=True, blank=True)
    location = models.CharField(max_length=255, verbose_name="存放位置", null=True, blank=True)
    file = models.FileField(upload_to='books/', verbose_name="电子书文件", null=True, blank=True)
    file_type = models.CharField(max_length=50, verbose_name="文件类型", null=True, blank=True)

    class Meta:
        db_table = "books"
        verbose_name = '图书表'
        verbose_name_plural = verbose_name
        ordering = ('-create_datetime',)


class ReadingProgress(CoreModel):
    """阅读进度模型"""
    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
        verbose_name="用户",
        related_name='reading_progresses'
    )
    creator = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        db_constraint=False,
        help_text='创建人',
        null=True,
        on_delete=models.deletion.SET_NULL,
        related_name='created_reading_progresses',
        related_query_name='creator_query',
        verbose_name='创建人'
    )
    book = models.ForeignKey(
        CrudBookModel,
        on_delete=models.CASCADE,
        verbose_name="图书"
    )
    location = models.TextField(verbose_name="阅读位置(CFI)", null=True, blank=True)
    progress = models.FloatField(verbose_name="阅读进度(%)", default=0)

    class Meta:
        db_table = "reading_progress"
        verbose_name = '阅读进度'
        verbose_name_plural = verbose_name
        unique_together = ('user', 'book')
        ordering = ('-update_datetime',)