#!/bin/sh

set -e
#set -x

# variants must be placed before to be automatically configured
redLocales="bg, bs, ca, cs, da, de, el, en-gb, en, es, eu, fi, fr, gl, he, hr, hu, id, it, ja, ko, lt, lv, mk, mn, nl, no, pl, pt-br, pt, ro, ru, sk, sl, sr-yu, sr, sv, th, tr, uk, vi, zh-tw, zh"

. /usr/share/debconf/confmodule
db_version 2.0
# This conf script is capable of backing up
db_capb backup

OUTSTATE=2
STATE=1

while [ "$STATE" != "0" -a "$STATE" != "$OUTSTATE" ]; do
	fIndex=$(($STATE / 10))
	fState=$(($STATE % 10))
	fNextState=$((($fIndex+1)*10))
	if [ $STATE -eq 1 ]; then
		# upgrade debconf db if we detect an old redmine version (<= 0.9.0~svn2819) was installed
		# detection
		fCode=0
		db_get redmine/dbconfig-install || fCode=$?
		if [ $fCode -eq 0 ]; then
			echo "Old redmine version detected, migrating dbconfig common data..."
			# remove deprecated debconf templates
			db_unregister redmine/reconfigure-webserver || true
			db_unregister redmine/restart-webserver || true
			db_unregister redmine/webserver-install || true
			# copy all current questions to instances/default ones
			# get old questions
			fOldQuest=$(debconf-show redmine)
			OLD_IFS=$IFS
			# ugly, if somebody can tell me how to escape \n, please send me an email to kapouer@melix.org
			fNewline="
"
			IFS=$fNewline
			# for each line, we want to get the three fields, seen, question, value
			for lLine in $fOldQuest; do
				IFS=$OLD_IFS
				lSeen="${lLine%% *}"
				if [ "$lSeen" = "*" ]; then
					lSeen="true"
					lStr="${lLine#\* }"
				else
					lSeen="false"
					lStr="${lLine#  }"
				fi
				lName="${lStr%%\:*}"
				if [ "${lName#redmine/instances/}" = "$lName" ]; then
					fCode=0
					db_get $lName || fCode=$?
					lVal=""
					if [ $fCode -eq 0 ]; then
						lVal="$RET"
					fi
					lNewname="redmine/instances/default${lName#redmine}"
					if [ -n "$lVal" ]; then
						db_register "$lName" "$lNewname"
						db_set "$lNewname" "$lVal"
						db_fset "$lNewname" seen "$lSeen"
					fi
					if [ "$lName" != "redmine/default-language" ]; then
						# we need redmine/default-language later
						db_unregister "$lName" || true
					fi
				fi
				IFS=$fNewline
			done
			IFS=$OLD_IFS
			
			# setup default as an old instance
			db_set redmine/current-instances "default"
			db_input high redmine/notify-migration || true
		fi
		db_get redmine/current-instances || true
		gOldInstances="${RET}"
		
		# what is that for ? we just got it.
		# db_set redmine/current-instances $gOldInstances
		db_input medium redmine/current-instances || true
		if db_go; then
			STATE=$fNextState
		else
			STATE=0
		fi
		db_get redmine/current-instances || true
		gInstances="${RET}"
		gRemovedInstances=""
		for lOld in $gOldInstances; do
			lFound=0
			for lCur in $gInstances; do
				if [ $lCur = $lOld ]; then
					lFound=1
					break
				fi
			done
			if [ $lFound -eq 0 ]; then
				if [ -z "$gRemovedInstances" ]; then gRemovedInstances="$lOld";
				else gRemovedInstances="$gRemovedInstances $lOld";
				fi
			fi
		done
		db_set redmine/old-instances "$gRemovedInstances"
		gNb=$(echo "$gInstances" | wc -w)
		OUTSTATE=$((($gNb+1) * 10))
	else
		fIndex=$(($STATE / 10))
		fState=$(($STATE % 10))
		fNextState=$((($fIndex+1)*10))
		fInstance=$(eval "echo \"$gInstances\" | awk '{print \$$fIndex}'")
		case "$fState" in
		0)
			if [ -f /usr/share/dbconfig-common/dpkg/config ]; then
				dbc_dbtypes="sqlite3, pgsql, mysql"
				dbc_authmethod_user="password"
				dbc_dbuser=redmine
				# use same dbname if one has been registered in debconf before
				# this is also needed for migration from version <= 0.9.0~svn2819
				fCode=0
				db_get redmine/instances/$fInstance/db/dbname || fCode=$?
				if [ $fCode -eq 0 -a -n "$RET" ]; then
					dbc_dbname="$RET"
				else
					dbc_dbname=redmine_$fInstance
				fi
				fCode=0
				db_get redmine/instances/$fInstance/db/basepath || fCode=$?
				if [ $fCode -eq 0 -a -n "$RET" ]; then
					dbc_basepath="$RET"
				else
					dbc_basepath=""
				fi
				( . /usr/share/dbconfig-common/dpkg/config ; dbc_go redmine/instances/$fInstance $@ )
				if [ $? -ne 0 ] ; then
					if [ $fIndex -gt 0 ];then
						STATE=$((($fIndex-1)*10 + 1))
					else
						STATE=0
					fi
					continue
				fi
				db_get redmine/instances/$fInstance/dbconfig-install || true
				if [ "$RET" != "true" ]; then
					STATE=$fNextState
				else
					STATE=$(($STATE + 1))
				fi
			else
				STATE=$OUTSTATE
			fi
		;;
		1)
			# supported locales
			
			# now check if current LANG correspond to one of those locales, only if LANG is like aa_BB.YY
			locstr=${LANG%.*}
			locMin=${locstr%_*}
			locMaj=$(echo ${locstr#*_} | tr "[:upper:]" "[:lower:]")
			locTrans="$locMin-$locMaj"
			OLD_IFS=$IFS
			IFS=", "
			locAv="en"
			for i in $redLocales; do
				if [ "$locTrans" = "$i" ];then
					locAv=$i
					break
				elif [ "$locMin" = "$i" ];then
					locAv=$i
					break
				fi
			done
			IFS=$OLD_IFS
			questionLanguage="redmine/instances/${fInstance}/default-language"
			# register only if needed
			fCode=0
			db_get $questionLanguage || fCode=$?
			if [ $fCode -eq 10 ]; then
				db_register "redmine/default-language" $questionLanguage
			fi
			db_subst $questionLanguage availableLocales $redLocales
			db_subst $questionLanguage defaultLocale $locAv
			db_set $questionLanguage $locAv
			db_input medium $questionLanguage || true
			
			if db_go; then
				STATE=$fNextState
			else
				STATE=$(($STATE - 1))
			fi
		;;
		esac
	fi
done