import os
import os.path
import stat
import json
from datetime import datetime

from django.db import models


class Stat:
    stat_result: os.stat_result

    def __init__(self, stat_result):
        self.stat_result = stat_result

    def __dict__(self):
        return {
            "mode": self.mode,
            "access_time": self.access_time,
            "modified_time": self.modified_time,
            "creation_time": self.creation_time,
            "birth_time": self.birth_time,
        }

    def as_dict(self):
        return self.__dict__()

    @property
    def mode(self):
        return self.stat_result["st_mode"]

    @property
    def access_time(self):
        return datetime.fromtimestamp(self.stat_result["st_atime"])

    @property
    def modified_time(self):
        return datetime.fromtimestamp(self.stat_result["st_mtime"])

    @property
    def creation_time(self):
        return datetime.fromtimestamp(self.stat_result["st_ctime"])

    @property
    def birth_time(self):
        if "st_birthtime" in self.stat_result:
            return datetime.fromtimestamp(self.stat_result["st_birthtime"])
        return None


class Picture(models.Model):
    PICTURE = "picture"
    # PICTURE_360 = 'picture-360'
    # PANORAMA = 'picture-panorama'
    VIDEO = "video"
    # VIDEO_360 = 'video-360'
    KIND_CHOICES = (
        (PICTURE, PICTURE.capitalize()),
        # (PICTURE_360, "Picture 360"),
        # (PANORAMA, PANORAMA.capitalize()),
        (VIDEO, VIDEO.capitalize()),
        # (VIDEO_360, "Video 360"),
    )

    file_path = models.FilePathField(max_length=255)
    creation_date = models.DateTimeField(db_index=True)
    checksum = models.CharField(max_length=64)
    metadata = models.TextField(blank=True, null=True)
    exif = models.TextField(blank=True, null=True)
    stat = models.TextField(blank=True, null=True)
    mimetype = models.CharField(max_length=64)
    raw = models.BooleanField(default=False)
    kind = models.CharField(choices=KIND_CHOICES, default=PICTURE, max_length=24)

    @property
    def filename(self):
        return os.path.basename(self.file_path)

    def get_stat(self):
        return Stat(json.loads(self.stat))

    # class Meta:
    #     ordering = ("creation_date", )