#!/usr/bin/env bash

declare -r				\
	DOCDIR=%DOCDIR%			\
	LIBDIR=%LIBDIR%			\
	SHAREDIR=%SHAREDIR%
declare -r				\
	exampleconf=$DOCDIR/example.cfg	\
	schema=$SHAREDIR/schema.sql	\
					\
	oldIFS="$IFS"

## Define exit codes
source "$SHAREDIR"/errorcodes

# config structures
declare -A			\
	destinationchannels	\
	destinationfat32compat	\
	destinationcopymime	\
	destinationformat	\
	destinationfrequency	\
	destinationid		\
	destinationloss		\
	destinationmaxbps	\
	destinationnormalize	\
	destinationpath		\
	destinationquality	\
	destinationrename	\
	destinationnoresample	\
	destinationrenamepath	\
	destinationskipmime	\
|| {
	echo "Check your Bash version. You need >= 4.0" >&2
	exit $EBASHVERS
}

LC_ALL=C

shopt -s extglob

for function in "$LIBDIR"/*/*
do
	source "$function"
done

if ! [[ -f "${XDG_CONFIG_HOME:-$HOME/.config}/AtOM/atom.cfg" ]]	\
&& [[ -f "$HOME/.atom/atom.cfg" ]]
then
	echo	"Configuration found in legacy location $HOME/.atom/atom.cfg."\
		"Migrating configuration and data to XDG standard"
	xdgMigrate
fi
cffile="${XDG_CONFIG_HOME:-$HOME/.config}/AtOM/atom.cfg"

while getopts 'Dr' opt
do
	case $opt in
		D)	(( debug++ ))	;;
		r)	regen=1		;;
	esac
done

getConfig
sanityCheck
openDatabase

echo '
	SELECT 
		destination_files.id,
		destinations.name,
		destination_files.filename
	FROM destinations
	INNER JOIN destination_files 
		ON destinations.id=destination_files.destination_id
	WHERE filename IS NOT NULL;' >&3
echo 'SELECT "AtOM:NoMoreFiles";' >&3

declare -a 			\
	destination_names	\
	files
read -u4 -d $'\0' line
until [[ $line == AtOM:NoMoreFiles ]]
do
	id=${line%%::AtOM:SQL:Sep::*}
	rest=${line#*::AtOM:SQL:Sep::}
	destination_names[id]=${rest%%::AtOM:SQL:Sep::*}
	rest=${rest#*::AtOM:SQL:Sep::}
	files[id]=${rest}
	read -u4 line
done

echo 'BEGIN TRANSACTION;' >&3

echo -n "Checking for missing files...  "
for index in "${!files[@]}"
do
	destination=${destination_names[index]}
	filename="${destinationpath[$destination]}/${files[index]}"
	if ! [ -f "$filename" ]
	then
		echo -e "\r$filename\033[K"
		((regen))&&Update destination_files last_change 0 <<<"id = $index"
		echo -n "Checking for missing files...  "
		(( missing++ ))
	fi
	progressSpin
done

echo 'COMMIT;' >&3

echo -e "\r${missing:-No} missing files\033[K"

closeDatabase