#!/usr/bin/env python3

import os
import random
import re
from typing import Dict, Set

import file_writer
import renderer


class local_photos_mirror_renderer(renderer.abstaining_renderer):
    """A renderer that uses a local mirror of Google photos"""

    album_root_directory = "/var/www/html/kiosk/images/gphotos/albums"

    album_whitelist = frozenset(
        [
            "Autumn at Kubota",
            "Bangkok and Phuket, 2003",
            "Barn",
            "Blue Angels... Seafair",
            "Chihuly Glass",
            "Dunn Gardens",
            "East Coast 2018",
            "Fall '17",
            "Friends",
            "Hiking",
            "Key West 2019",
            "Krakow 2009",
            "Kubota Gardens",
            "Las Vegas, 2017",
            "London, 2018",
            "Munich, July 2018",
            "NJ 2015",
            "Newer Alex Photos",
            "Ohme Gardens",
            "Olympic Sculpture Park",
            "Portland, ME 2021",
            "Prague and Munich 2019",
            "Random",
            "SFO 2014",
            "Scott and Lynn",
            "Sculpture Place",
            "Skiing with Alex",
            "Sonoma",
            "Trip to California, '16",
            "Trip to San Francisco",
            "Trip to East Coast '16",
            "Turkey 2022",
            "Tuscany 2008",
            "WA Roadtrip, 2021",
            "Yosemite 2010",
            "Zoo",
        ]
    )

    extension_whitelist = frozenset(
        [
            "jpg",
            "gif",
            "JPG",
            "jpeg",
            "GIF",
        ]
    )

    def __init__(self, name_to_timeout_dict: Dict[str, int]) -> None:
        super().__init__(name_to_timeout_dict)
        self.candidate_photos: Set[str] = set()

    def debug_prefix(self) -> str:
        return "local_photos_mirror"

    def periodic_render(self, key: str) -> bool:
        if key == "Index Photos":
            return self.index_photos()
        elif key == "Choose Photo":
            return self.choose_photo()
        else:
            raise Exception("Unexpected operation")

    def album_is_in_whitelist(self, name: str) -> bool:
        for wlalbum in self.album_whitelist:
            if re.search("\d+ %s" % wlalbum, name) is not None:
                return True
        return False

    def index_photos(self) -> bool:
        """Walk the filesystem looking for photos in whitelisted albums and
        keep their paths in memory.
        """
        for root, subdirs, files in os.walk(self.album_root_directory):
            last_dir = root.rsplit("/", 1)[1]
            if self.album_is_in_whitelist(last_dir):
                for filename in files:
                    extension = filename.rsplit(".", 1)[1]
                    if extension in self.extension_whitelist:
                        photo_path = os.path.join(root, filename)
                        photo_url = photo_path.replace(
                            "/var/www/html", "http://kiosk.house/", 1
                        )
                        self.candidate_photos.add(photo_url)
        return True

    def choose_photo(self):
        """Pick one of the cached URLs and build a page."""
        if len(self.candidate_photos) == 0:
            print("No photos!")
            return False
        path = random.sample(self.candidate_photos, 1)[0]
        with file_writer.file_writer("photo_23_3600.html") as f:
            f.write(
                """
<style>
body{background-color:#303030;}
div#time{color:#dddddd;}
div#date{color:#dddddd;}
</style>
<center>"""
            )
            f.write(
                f'<img src="{path}" style="display:block;max-width=800;max-height:600;width:auto;height:auto">'
            )
            f.write("</center>")
        return True


# Test code
# x = local_photos_mirror_renderer({"Index Photos": (60 * 60 * 12),
#                                  "Choose Photo": (1)})
# x.index_photos()
# x.choose_photo()