rpiwebapp-public/comics/comics.py

from flask import Blueprint, render_template, request, make_response, current_app
from flask_login import login_required

from urllib import parse
from io import BytesIO
from wand.image import Image
import os, pytz, datetime
import inspect

from scripts import database, func

Comics = Blueprint("comics", __name__, template_folder="templates")

MOBILE_DEVICES = ["android", "blackberry", "ipad", "iphone"]


@Comics.route("/comics")
@login_required
def index():
	try:
		page = request.args.get("page", 1, type=int)
		max_items = request.args.get("max_items", 30, type=int)
		publishers = database.get_publishers()
		start = (max_items*(page-1))
		end = len(publishers) if len(publishers) < max_items*page else max_items*page
		return render_template("comics/index.html", title="Comics", publishers=publishers, page=page, max_items=max_items, start=start, end=end, item_count=len(publishers))
	except Exception as e:
		current_app.logger.info(inspect.stack()[0][3] + " " + str(type(e)) + " " + str(e))
		return str(type(e)) + " " + str(e)


@Comics.route("/comics/search")
@login_required
def search():
	try:
		page = request.args.get("page", 1, type=int)
		max_items = request.args.get("max_items", 30, type=int)
		publisher_end = 0
		series_end = 0
		comics_end = 0
		publisher_start = 0
		series_start = 0
		comics_start = 0
		item_count = 0
		query = request.args.get("q")
		results = {
			"publisher": [],
			"series": [],
			"comics": []
		}
		if query:
			results = database.db_search_comics(query)
			item_count = len(results["publisher"]) + len(results["series"]) + len(results["comics"])
			for temp_page in range(1, page+1):
				publisher_start = publisher_end
				series_start = series_end
				comics_start = comics_end
				items = 0
				publisher_end = len(results["publisher"]) if len(results["publisher"]) < max_items*temp_page else max_items*temp_page
				items += publisher_end - publisher_start
				if items < max_items:
					series_end = len(results["series"]) if len(results["series"]) < (max_items*temp_page)-items else (max_items*temp_page)-items
					items += series_end-series_start
					if items < max_items:
						comics_end = len(results["comics"]) if len(results["comics"]) < (max_items*temp_page)-series_end-publisher_end else (max_items*temp_page)-series_end-publisher_end
		return render_template("comics/search.html", title="Comics: Search", publishers=results["publisher"], publisher_series=results["series"],
		                       comics=results["comics"], page=page, max_items=max_items, item_count=item_count,
		                       publisher_start=publisher_start, series_start=series_start, comics_start=comics_start,
		                       publisher_end=publisher_end, series_end=series_end, comics_end=comics_end)
	except Exception as e:
		current_app.logger.info(inspect.stack()[0][3] + " " + str(type(e)) + " " + str(e))
		return str(type(e))+" "+str(e)


@Comics.route("/comics/<publisher>")
@login_required
def comics_publisher(publisher):
	try:
		publisher = parse.unquote(publisher)
		series = request.args.get("series")
		series_year = request.args.get("seriesYear")
		issue = request.args.get("issue")
		page_number = request.args.get("pageNumber")
		page = request.args.get("page", 1, type=int)
		max_items = request.args.get("max_items", 30, type=int)
		publisher_series = database.db_get_series_by_publisher(publisher)
		start = (max_items*(page-1))
		end = len(publisher_series) if len(publisher_series) < max_items*page else max_items*page
		if series:
			comics = database.db_get_comics_in_series(series, publisher, series_year)
			start = (max_items * (page - 1))
			end = len(comics) if len(comics) < max_items * page else max_items * page
			if issue:
				if page_number:
					return comic_viewer(publisher, series, series_year, issue)
				return comic_gallery(publisher, series, series_year, issue)
			return render_template("comics/seriesView.html", title="Comics", comics=comics,
			                       start=start, end=end, page=page, max_items=max_items, item_count=len(comics))
		return render_template("comics/publisherSeriesView.html", title="Comics", publisher_series=publisher_series,
		                       start=start, end=end, page=page, max_items=max_items, item_count=len(publisher_series))
	except Exception as e:
		current_app.logger.info(inspect.stack()[0][3] + " " + str(type(e)) + " " + str(e))
		return str(type(e)) + " " + str(e)


def comic_viewer(publisher, series, series_year, issue):
	try:
		on_mobile = False
		if request.user_agent.platform in MOBILE_DEVICES:
			on_mobile = True
		publisher_parsed = parse.quote(publisher)
		series_parsed = parse.quote(series)
		page_number = int(request.args.get("pageNumber"))
		meta = database.db_get_comic(publisher, series, series_year, issue)
		page_count = int(meta.pagecount)

		prev_page = page_number - 1
		next_page = page_number + 1
		if next_page >= page_count:
			next_page = 0
		if prev_page < 0:
			prev_page = page_count - 1
		prev_url = "/comics/{}?series={}&seriesYear={}&issue={}&pageNumber={}".format(publisher_parsed, series_parsed, series_year, issue, prev_page)
		next_url = "/comics/{}?series={}&seriesYear={}&issue={}&pageNumber={}".format(publisher_parsed, series_parsed, series_year, issue, next_page)
		title = "Comics: "+meta.series+": #"+meta.issuetext+" "+(meta.title or "")
		return render_template("comics/comicView.html", title=title, on_mobile=on_mobile, prev_url=prev_url, next_url=next_url, comic=meta, page_number=page_number)
	except Exception as e:
		current_app.logger.info(inspect.stack()[0][3] + " " + str(type(e)) + " " + str(e))
		return str(type(e)) + " " + str(e)


def comic_gallery(publisher, series, series_year, issue):
	try:
		page = request.args.get("page", 1, type=int)
		max_items = request.args.get("max_items", 30, type=int)
		meta = database.db_get_comic(publisher, series, series_year, issue)
		start = (max_items*(page-1))
		end = meta.pagecount if meta.pagecount < max_items*page else max_items*page
		return render_template("comics/comicGallery.html", title="Comics", comic=meta, start=start, end=end, page=page, max_items=max_items, item_count=meta.pagecount)
	except Exception as e:
		current_app.logger.info(inspect.stack()[0][3] + " " + str(type(e)) + " " + str(e))
		return str(type(e)) + " " + str(e)


@Comics.route("/comics/get_comic/<int:comic_id>/<int:page_number>")
@login_required
def get_comic_page(comic_id, page_number):
	meta = database.db_get_comic_by_id(comic_id)
	comic = func.open_comic(meta.path)
	byte_image = BytesIO(comic.getPage(page_number))
	image = Image(file=byte_image)
	response = make_response(image.make_blob())
	response.headers["cache-control"] = "public"
	date = pytz.utc.localize(datetime.datetime.utcfromtimestamp(os.path.getmtime(meta.path)))
	response.headers["last-modified"] = date.strftime('%a, %d %b %Y %H:%M:%S %Z')
	response.headers["content-type"] = "image/" + image.format
	return response


@Comics.route("/comics/get_comic/<int:comic_id>/<int:page_number>/thumbnail")
@login_required
def get_comic_thumbnail(comic_id, page_number):
	meta = database.db_get_comic_by_id(comic_id)
	thumb = database.db_get_thumbnail_by_id_page(comic_id, page_number)
	response = make_response(thumb.image)
	response.headers["cache-control"] = "public"
	date = pytz.utc.localize(datetime.datetime.utcfromtimestamp(os.path.getmtime(meta.path)))
	response.headers["last-modified"] = date.strftime('%a, %d %b %Y %H:%M:%S %Z')
	response.headers["content-type"] = thumb.type
	return response