#!/bin/sh

# shellcheck disable=SC1091,SC1090
process_response() {
	enc_data_base64=$(printf "%s" "$1" | sed -nE 's|.*"tobeparsed":"([^"]*)".*|\1|p')
	iv="$(printf '%s' "$enc_data_base64" | base64 -d | dd bs=1 skip=1 count=12 2>/dev/null | od -An -tx1 | tr -d ' \n')00000002"
	[ "${#iv}" != 32 ] && error_$os "IV not present in response, maybe the episode not released..?" && exit 0
	data="$(printf '%s' "$enc_data_base64" | base64 -d | dd bs=1 skip=13 2>/dev/null | openssl enc -d -aes-256-ctr -K "a254aa27c410f297bd04ba33a0c0df7ff4e706bf3ae27271c6703f84e750f552" -iv "$iv" -nosalt -nopad 2>/dev/null | tr '{}' '\n' | sed 's|\\u002F|\/|g;s|\\||g' | sed -nE 's|.*"sourceUrl":"([^"]*)".*"sourceName":"([^"]*)".*|\2 :\1|p')"
}

hex_decrypt() {
	printf '%s' "$1" | sed 's/../&\n/g' | sed 's/^--$/\n/g;s/^79$/A/g;s/^7a$/B/g;s/^7b$/C/g;s/^7c$/D/g;s/^7d$/E/g;s/^7e$/F/g;s/^7f$/G/g;s/^70$/H/g;s/^71$/I/g;s/^72$/J/g;s/^73$/K/g;s/^74$/L/g;s/^75$/M/g;s/^76$/N/g;s/^77$/O/g;s/^68$/P/g;s/^69$/Q/g;s/^6a$/R/g;s/^6b$/S/g;s/^6c$/T/g;s/^6d$/U/g;s/^6e$/V/g;s/^6f$/W/g;s/^60$/X/g;s/^61$/Y/g;s/^62$/Z/g;s/^59$/a/g;s/^5a$/b/g;s/^5b$/c/g;s/^5c$/d/g;s/^5d$/e/g;s/^5e$/f/g;s/^5f$/g/g;s/^50$/h/g;s/^51$/i/g;s/^52$/j/g;s/^53$/k/g;s/^54$/l/g;s/^55$/m/g;s/^56$/n/g;s/^57$/o/g;s/^48$/p/g;s/^49$/q/g;s/^4a$/r/g;s/^4b$/s/g;s/^4c$/t/g;s/^4d$/u/g;s/^4e$/v/g;s/^4f$/w/g;s/^40$/x/g;s/^41$/y/g;s/^42$/z/g;s/^08$/0/g;s/^09$/1/g;s/^0a$/2/g;s/^0b$/3/g;s/^0c$/4/g;s/^0d$/5/g;s/^0e$/6/g;s/^0f$/7/g;s/^00$/8/g;s/^01$/9/g;s/^15$/-/g;s/^16$/./g;s/^67$/_/g;s/^46$/~/g;s/^02$/:/g;s/^17$/\//g;s/^07$/?/g;s/^1b$/#/g;s/^63$/\[/g;s/^65$/\]/g;s/^78$/@/g;s/^19$/!/g;s/^1c$/$/g;s/^1e$/&/g;s/^10$/\(/g;s/^11$/\)/g;s/^12$/*/g;s/^13$/+/g;s/^14$/,/g;s/^03$/;/g;s/^05$/=/g;s/^1d$/%/g;' | tr -d '\n'
}

domain="allanime.day"
refer="https://youtu-chan.com"
run_file="${TMPDIR:-/tmp}/${0##*/}_run"
agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/14$(head /dev/urandom | tr -dc '5-9' | cut -c1).0.0.0 Safari/537.36"
debug=$2

\cat <<EOF >"$run_file"
search() { curl -sLXPOST -e "$refer" -H "Content-Type: application/json" "https://api.${domain}/api" -A "$agent" --data '{"variables":{"search":{"sortBy":"Recent","allowAdult":true,"allowUnknown":true,"query":"'"\$1"'"},"limit":40,"page":1,"translationType":"sub","countryOrigin":"JP"},"query":"query(\$search: SearchInput \$limit: Int \$page: Int \$translationType: VaildTranslationTypeEnumType \$countryOrigin: VaildCountryOriginEnumType) { shows( search: \$search limit: \$limit page: \$page translationType: \$translationType countryOrigin: \$countryOrigin ) {edges { _id name lastEpisodeInfo __typename}}}"}' | sed 's|Show|\n|g' | sed 's|__typename|\n|g' | sed -nE 's|.*_id":"([^"]*)","name":"([^"]*)".*sub":\{"episodeString":"([^"]*)".*|\1\t\2 Episode \3|p'; }; [ -n "\$2" ] && search "\$1"
EOF

chmod +x "$run_file"
. "$run_file"

case $(uname -o) in
	*ndroid*)
		os="droid"
		download_dir="/sdcard"
		;;
	*)
		os="linux"
		download_dir="${XDG_DOWNLOAD_DIR:-$HOME/Downloads}"
		terminal="setsid -f ${TERMINAL:-foot} -e"
		;;
esac

. "$(dirname "$0")"/.functions

trap "exit 0" INT HUP
info_$os "Parsing $domain.. Please wait..."

url=$(search | (
	case "$os" in
		linux) menu_$os "Select Anime: " ;;
		*) fzf --bind="change:reload:$run_file {q} 1" --prompt="Select Anime: " --with-nth 2.. -m ;;
	esac
) | tr ':' ' ' | tr -s ' ') || true

[ -z "$url" ] && error_$os "No anime selected" && exit 0

printf "%s\n" "$url" | while read -r id title; do
	ep_no=$(printf "%s" "$title" | sed 's/.*Episode //g')

	info_$os "Loading Episode $title.."
	[ -n "$debug" ] && printf "\n\033[1;36m title\033[0m : %s\n" "$title"

	#shellcheck disable=SC2016
	process_response "$(curl -e "$refer" -sG -A "$agent" -H "Origin: $refer" "https://api.${domain}/api" --data-urlencode 'variables={"showId":"'"$id"'","translationType":"sub","episodeString":"'"$ep_no"'"}' --data-urlencode 'extensions={"persistedQuery":{"version":1,"sha256Hash":"d405d0edd690624b66baba3068e0edc3ac90f1597d898a1ec8db4e5c43c00fec"}}')"

	[ -n "$debug" ] && printf "\n\033[1;36m Providers\033[0m : %s\n\n" "$data"

	info_$os "Fetching Embed links"

	printf 'sharepoint\tS-mp4\nYoutube\tYt-mp4\nmp4upload\tMp4\n' | while read -r provider_name provider_regex; do
		info_$os "Fetching $provider_name links"
		provider_id="$(printf "%s" "$data" | sed -n "/$provider_regex :/p" | cut -d':' -f2-)"
		[ -z "$provider_id" ] && continue

		case $provider_name in
			mp4upload)
				provider_video=$(curl -sLk "$provider_id" -A "$agent" -e "$refer" | sed -nE 's|.*src: "([^"]*)"[[:space:]]*|\1|p')
				refer="$provider_id"
				;;
			Youtube)
				provider_video=$(hex_decrypt "$provider_id")
				;;
			*)
				provider_id="$(hex_decrypt "$provider_id" | sed "s/\/clock/\/clock\.json/")"
				provider_video=$(curl -e "$refer" -A "$agent" -s "https://${domain}${provider_id}" | sed 's|},{|\n|g' | sed -nE 's|.*link":"([^"]*)".*"resolutionStr":"([^"]*)".*|\1|p;s|.*hls","url":"([^"]*)".*"hardsub_lang":"en-US".*|\1|p' | head -1)
				;;
		esac

		[ -z "$provider_video" ] && continue
		[ -n "$debug" ] && printf "\033[1;32m %s\033[0m : %s\n\033[1;32m Referrer\033[0m : %s\n" "$provider_name" "$provider_video" "$refer" && continue
		info_$os "$provider_name links fetched.."
		choice=$(printf "stream\ndownload\ncast\nnext_mirror\nnext_anime" | menu_$os "??" '' "2")
		[ -z "$choice" ] && break
		case $choice in
			stream)
				info_$os "opening $title" "mpv"
				# shellcheck disable=SC2086
				player_$os "$provider_video" "$title" --referrer="$refer" --tls-verify=no --user-agent="$agent"
				break
				;;
			cast)
				info_$os "casting $title" "podcast"
				catt cast "$provider_video"
				break
				;;
			*mirror)
				continue
				;;
			download)
				info_$os "Downloading $title" "downloader"
				case $provider_video in
					*m3u*) $terminal hls -ro "$download_dir/$title" "$provider_video" || error_$os "Downloading failed $title" ;;
					*) $terminal aria2c -U "$agent" --check-certificate=false -d "$download_dir" --summary-interval=0 -x 16 -s 16 --referer="$refer" "$provider_video" -o "$title.mp4" --download-result=hide || error_$os "Downloading failed $title" ;;
				esac
				info_$os "Episode Downloaded $title"
				;;
		esac
		break
	done
done
