from flask import Blueprint, flash, g, redirect, render_template, request, url_for, jsonify, current_app
from werkzeug.exceptions import abort
from werkzeug.utils import secure_filename

from gallery.auth import login_required
from gallery.db import get_db

from . import metadata as mt
from PIL import Image

import os
from datetime import datetime
dt = datetime.now()

blueprint = Blueprint('gallery', __name__)


def human_size(num, suffix="B"):
    for unit in ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"]:
        if abs(num) < 1024.0:
            return f"{num:3.1f}{unit}{suffix}"
        num /= 1024.0
    return f"{num:.1f}Yi{suffix}"
    

@blueprint.route('/')
def index():
    db = get_db()
    images = db.execute('SELECT * FROM posts'
                        ' ORDER BY created_at DESC').fetchall()

    return render_template('index.html', images=images)


@blueprint.route('/image/<int:id>')
def image(id):
    # Get image from database
    db = get_db()
    image = db.execute('SELECT * FROM posts WHERE id = ?', (id, )).fetchone()

    if image is None:
        abort(404)

    exif = mt.metadata.yoink(os.path.join(current_app.config['UPLOAD_FOLDER'], image['file_name']))
    file_size = human_size(os.path.getsize(os.path.join(current_app.config['UPLOAD_FOLDER'], image['file_name'])))
    
    try:
        width = exif['File']['Width']['value']
        height = exif['File']['Height']['value']
    except:
        try:
            width, height = Image.open(os.path.join(current_app.config['UPLOAD_FOLDER'], image['file_name'])).size
        except:
            width, height = 0, 0

    return render_template('image.html', image=image, exif=exif, file_size=file_size, width=width, height=height)


@blueprint.route('/group')
def groups():
    return render_template('group.html', group_id='gwa gwa')


@blueprint.route('/group/<int:id>')
def group(id):
    return render_template('group.html', group_id=id)


@blueprint.route('/upload')
@login_required
def upload():
    return render_template('upload.html')


@blueprint.route('/profile')
def profile():
    return render_template('profile.html', user_id='gwa gwa')


@blueprint.route('/profile/<int:id>')
def profile_id(id):
    return render_template('profile.html', user_id=id)


@blueprint.route('/settings')
@login_required
def settings():
    return render_template('settings.html')