#!/bin/bash
set -e
set -x
CONFIG_FILE="${2}"
#arr+=( ["blend_name"]="devuan-live" \
#	["blend_vers"]="2.0" \
#	["mirror"]="http://192.168.44.47:3142/pkgmaster.devuan.org/merged" \
#	["release"]="ascii" )

declare -A arr
#arr+=( "${1}" )
echo "edit-config.sh file: <"${2}">"
echo "edit-config.sh arr:  <"${1}">"
eval "arr=(${1})"

for TARGET_KEY in "${!arr[@]}"; do
    echo ${TARGET_KEY} ${arr[${TARGET_KEY}]} ${CONFIG_FILE}
    if grep -q "^${TARGET_KEY}[+]*=" ${CONFIG_FILE}; then
	  # sed -i "s|^${TARGET_KEY}[+]*.*|${TARGET_KEY}=\"${arr[${TARGET_KEY}]}\"|" ${CONFIG_FILE}

	    # Replace multiline "${TARGET_KEY}=(...)"  with "TARGET_KEY=(TARGET_VALUES)".
	    # Replace multiline "${TARGET_KEY}+=(...)" with "TARGET_KEY+=(TARGET_VALUES)".
	    sed -i -e "/${TARGET_KEY}\([+]*\)=(/{" \
		   -e " :loop;s/^${TARGET_KEY}\([+]\)*=(.*)/TARGET_KEY\1=(TARGET_VALUES)/;t;N;b loop" \
		   -e "}" \
		   ${CONFIG_FILE}
	    # Replace "TARGET_KEY=(TARGET_VALUES)" with values from ${arr[]}.
	    # Works with "TARGET_KEY=(TARGET_VALUES)" and "TARGET_KEY+=(TARGET_VALUES)".
	    sed -i -e "s|^TARGET_KEY\([+]*\)=|${TARGET_KEY}\1=|;" \
		   -e "s|TARGET_VALUES|${arr[${TARGET_KEY}]}|" \
		   ${CONFIG_FILE}
    else
	# $TARGET_KEY is new to ${CONFIG_FILE}
	# Assume $TARGET_KEY is not used elsewhere, so use "=" not "+=".
	sed -i "/^blend_name=.*/ s|.*|&\n${TARGET_KEY}=\"${arr[${TARGET_KEY}]}\"|" ${CONFIG_FILE}
    fi
done

## 	    sed -i "s|^${TARGET_KEY}.*|${TARGET_KEY}=\"${arr[${TARGET_KEY}]}\"|" ${CONFIG_FILE}
## 
## 	    sed	-e "/${TARGET_KEY}[+]=(/{" -e ":loop;s/^${TARGET_KEY}=(.*)/(xTARGETx)/;t;N;b loop" -e "}" -e "s/^(xTARGETx)/${TARGET_KEY}=${arr[${TARGET_KEY}]}/"
## 	    ${CONFIG_FILE}
## 
## 	    sed	-e "/${TARGET_KEY}[+]=(/{" \
## 		    -e ":loop;s/^${TARGET_KEY}=(.*)/(xTARGETx)/;t;N;b loop" \
## 		    -e "}" \
## 		    -e "s/^(xTARGETx)/${TARGET_KEY}=${arr[${TARGET_KEY}]}/"
## 
## Works: +=
## 
## cat config| sed -e "/${TARGET_KEY}\([+]*\)=(/{" -e " :loop;s/^${TARGET_KEY}+=(.*)/(xTARGETx)/;t;N;b loop" -e "}" -e "s/^(xTARGETx)/${TARGET_KEY}+=${arr[${TARGET_KEY}]}/"
## 
## works: =
## 
## cat config| sed -e "/${TARGET_KEY}\([+]*\)=(/{" -e " :loop;s/^${TARGET_KEY}=(.*)/(xTARGETx)/;t;N;b loop" -e "}" -e "s/^(xTARGETx)/${TARGET_KEY}+=${arr[${TARGET_KEY}]}/"
## 
## works: both
## 
## cat config| sed -e "/${TARGET_KEY}\([+]*\)=(/{" -e " :loop;s/^${TARGET_KEY}\([+]\)*=(.*)/TARGET_KEY\1=(TARGET_VALUES)/;t;N;b loop" -e "}"  | sed -e "s/^TARGET_KEY\([+]*\)=/${TARGET_KEY}\1=/; s/TARGET_VALUES/${arr[${TARGET_KEY}]}/"
## 
## formatted:
## 
## cat config| sed -e "/${TARGET_KEY}\([+]*\)=(/{"
## 		-e " :loop;s/^${TARGET_KEY}\([+]\)*=(.*)/TARGET_KEY\1=(TARGET_VALUES)/;t;N;b loop"
## 		-e "}"  | sed -e "s/^TARGET_KEY\([+]*\)=/${TARGET_KEY}\1=/; s/TARGET_VALUES/${arr[${TARGET_KEY}]}/"