#!/usr/bin/env bash
#
# update.sh - script to check for updates and perform them (on the PKGBUILDs)
#
# Copyright 2018 Einhard Leichtfuß
#
# This file is part of aur-fd-scripts
#
# aur-fd-scripts is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# aur-fd-scripts is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with aur-fd-scripts.  If not, see <https://www.gnu.org/licenses/>.
#

# usage: $0 dir type [--nopull] [-u xyz-uvw|-ua|-uaf]
# $1 base directory: string
# $2 type: (src|bin|svn)
# $4 option: --nopull {can be omitted}
# ${4,5} update force mode: (-u lang1-lang2|-ua|-uaf) {can be omitted}
#     -u x: Update x, even if it appears up to date.
#     -ua:  Update all that are out of date.
#     -uaf: Update all, even if they appear up to date.


script_path="$(realpath "$0")"
script_dir="${script_path%/*}"

. "${script_dir}/basic.sh" || exit 1


function main
{
	if [ "$#" -lt 2 ]
	then
		echo "Usage: $0 <base_dir> <type> [--nopull] [-u <xy>-<zw>|-ua|-uaf]" >&2
		exit 1
	else
		cd "$1" || exit 1
	fi

	type="$2"

	if [ "$3" = "--nopull" ]
	then
		nopull=true
		shift 3
	else
		nopull=false
		shift 2
	fi


	init
	if [[ "$type" == src ]]
	then
		handle_all src ''   src   "$@"
	elif [[ "$type" == bin ]]
	then
		handle_all bin -bin dictd "$@"
	elif [[ "$type" == svn ]]
	then
		handle_all_vcs svn -svn "$@"
	else
		echo "Type $type not supported." >&2
		exit 1
	fi
}


# Update PKGBUILD and .SRCINFO
#
# requires: $lang, $ext, $type, $ver, $convver to be set;
#           $PWD == <base directory>/<type>/<lang>
#
function update
{
	echo "Updating ${lang}${ext} (${pkgver} -> ${convver})..."

	lang_a="${long[${lang%-*}]}"
	lang_b="${long[${lang#*-}]}"

	input "${script_dir}/${type}/sample.PKGBUILD"

	replace '%MAINTAINER%' "$maintainer"
	replace '%LANG%' "$lang"
	replace '%LANG_A%' "$lang_a"
	replace '%LANG_B%' "$lang_b"
	replace '%VER%' "$convver"
	replace '%LICENSES%' "${licenses[$lang]}"
	replace '%CHECKSUM%' "$checksum"

	replace_line '%CONTRS%' "${contrs[${lang}${ext}]}" normal

	if [[ "$ver" == "$convver" ]]
	then
		delete_line '^_pkgver=\$\{pkgver\/\/_\/-\}$'
		replace '_pkgver' 'pkgver'
	fi

	replace_line '%PREPARE%' "${prepare[${lang}${ext}]}" rm-plus-one

	write PKGBUILD
	makepkg --printsrcinfo > .SRCINFO
}


# Check for updates for src / bin packages and optionally update them.
#
# $1 type: (src|bin)
# $2 suffix: (|-bin)
# $3 platform: (src|dictd)
# ${@:4} args: $@
#
# requires: $PWD == <base directory>
#
function handle_all
{
	type="$1"
	ext="$2"
	platform="$3"
	shift 3

	curl -sSO https://freedict.org/freedict-database.json || exit 1

	cd "$type" || exit 1

	for lang in ${langs[@]}
	do
		cd $lang || exit 1
		$nopull || git pull -q
		pkgver="$(sed -En 's/\s*pkgver\s*=\s*(.+)\s*/\1/p' .SRCINFO)"
		data="$(jq -r ".[] | select(.name == \"${lang}\") | .releases[] | select(.platform==\"$platform\")" ../../freedict-database.json)"
		ver="$(jq -r '.version' <<< "$data")"
		url="$(jq -r '.URL' <<< "$data")"
		checksum="$(jq -r '.checksum' <<< "$data")"
		convver="${ver//-/_}"

		if [[ "$pkgver" != "$convver" ]]
		then
			echo "${lang}${ext} requires update (${pkgver} -> ${convver})."
			ureq=true
		else
			ureq=false
		fi

		if [[ "$url" != "https://download.freedict.org/dictionaries/${lang}/${ver}/freedict-${lang}-${ver}.${platform}.tar.xz" ]]
		then
			echo "${lang}${ext} URL changed (${url})."
		else
			if [[ "$1" == "-u" && "$2" == "$lang" ]] \
				|| ([[ "$1" == "-ua" ]] && $ureq) \
				|| [[ "$1" == "-uaf" ]]
			then
				update
			fi
		fi

		cd ..
	done

	cd ..
}


# Check for updates for VCS (svn) packages and optionally update them.
#
# $1 type: (svn)
# $2 suffix: (-svn)
# ${@:3} args: $@
#
# requires: $PWD == <base directory>
#
function handle_all_vcs
{
	type="$1"
	ext="$2"
	shift 2

	cd "$type" || exit 1

	for lang in ${vcs_langs[@]}
	do
		cd $lang || exit 1
		$nopull || git pull -q
		pkgver="$(sed -En 's/\s*pkgver\s*=\s*(.+)\s*/\1/p' .SRCINFO)"
		makepkg --nobuild --nodeps > /dev/null 2>&1
		ver="$(makepkg --printsrcinfo \
			| sed -En 's/\s*pkgver\s*=\s*(.+)\s*/\1/p')"
		convver="$ver"

		if [[ "$1" == "-u" && "$2" == "$lang" ]] || [[ "$1" == "-uaf" ]]
		then
			update
		fi

		cd ..
	done

	cd ..
}


main "$@"