#!/bin/bash
if [[ "$1" != "" ]]; then
    cmd[0]="$AWS cloudformation describe-stack-resources --stack-name $1"
    pref[0]="StackResources"
else
    cmd[0]="$AWS cloudformation list-stacks"
    pref[0]="StackSummaries"
fi

c=0
cm=${cmd[$c]}

tft[0]="aws_cloudformation_stack"
idfilt[0]="StackName"

for c in $(seq 0 0); do

    cm=${cmd[$c]}
    ttft=${tft[(${c})]}
    echo $cm
    awsout=$(eval $cm 2>/dev/null)
    if [ "$awsout" == "" ]; then
        echo "$cm : You don't have access for this resource"
        exit
    fi
    if [[ "$1" != "" ]]; then
        count=1
    else
        count=$(echo $awsout | jq ".${pref[(${c})]} | length")
    fi
    #echo $awsout | jq .
    if [ "$count" -gt "0" ]; then
        count=$(expr $count - 1)
        for i in $(seq 0 $count); do
            #echo $i
            cname=$(echo $awsout | jq -r ".${pref[(${c})]}[(${i})].${idfilt[(${c})]}")
            rname=${cname//:/_} && rname=${rname//./_} && rname=${rname//\//_}

            echo "$ttft $cname"
            fn=$(printf "%s__%s.tf" $ttft $rname)
            tfs=$(printf "%s__%s.txt" $ttft $rname)
            if [ -f "$fn" ]; then
                echo "$fn exists already skipping"
                continue
            fi

            if [[ "$1" != "" ]]; then
                sstatus=$(echo $awsout | jq -r ".${pref[(${c})]}[(${i})].ResourceStatus")
            else
                sstatus=$(echo $awsout | jq -r ".${pref[(${c})]}[(${i})].StackStatus")
            fi
            if [[ "$sstatus" != "CREATE_COMPLETE" ]]; then
                echo "Stack $cname status=$sstatus skipping ..."
                continue
            fi

            ($AWS cloudformation get-template --stack-name $cname >data/cft__$rname.json) 2>/dev/null
            if [[ $? -ne 0 ]]; then
                echo "Problem getting stack $cname - skipping"
                continue
            fi

            printf "resource \"%s\" \"%s\" {}" $ttft $rname >$fn
            terraform import $ttft.${rname} "${cname}" | grep Importing
            terraform state show -no-color $ttft.${rname} >$tfs

            rm -f $fn

            file=$(echo $tfs)

            echo $aws2tfmess >$fn
            while IFS= read line; do
                skip=0
                # display $line or do something with $line
                t1=$(echo "$line")
                if [[ ${t1} == *"$"* ]]; then
                    t1=${t1//$/&}
                fi
                if [[ ${t1} == *"="* ]]; then
                    tt1=$(echo "$line" | cut -f1 -d'=' | tr -d ' ')
                    tt2=$(echo "$line" | cut -f2- -d'=')
                    if [[ ${tt1} == "arn" ]]; then skip=1; fi
                    if [[ ${tt1} == "id" ]]; then
                        t1=$(printf "template_url = file(\"data/cft__%s.json\")" $rname)
                        printf "lifecycle {\n" >>$fn
                        printf "   ignore_changes = [template_url]\n" >>$fn
                        printf "}\n" >>$fn
                    fi
                    if [[ ${tt1} == "created_time" ]]; then skip=1; fi
                    if [[ ${tt1} == "Description" ]]; then
                        tt2=$(echo $tt2 | sed 's/^"//')
                        tt2=$(echo $tt2 | sed 's/"$//')
                        #tt2=${tt2//\\/\\\\}
                        #tt2=${tt2//%\{/%%\{}
                        tt2=$(echo $tt2 | sed 's/"/\\"/g')
                        t1=$(printf "%s = \"%s\"" $tt1 "$tt2")
                        tt2=$(echo $tt2 | sed 's/"/\\"/g')
                        skip=1
                    fi
                    # skip block
                    if [[ ${tt1} == "outputs" ]]; then
                        #echo $t1
                        skip=1
                        lbc=0
                        rbc=0
                        breq=0
                        while [[ $breq -eq 0 ]]; do
                            if [[ "${t1}" == *"{"* ]]; then lbc=$(expr $lbc + 1); fi
                            if [[ "${t1}" == *"}"* ]]; then rbc=$(expr $rbc + 1); fi
                            #echo "op=$lbc $rbc $t1"
                            if [[ $rbc -eq $lbc ]]; then
                                breq=1
                            else
                                read line
                                t1=$(echo "$line")
                            fi
                        done
                    fi

                    if [[ ${tt1} == "template_body" ]]; then
                        #echo $t1
                        skip=1
                        lbc=0
                        rbc=0
                        breq=0
                        if [[ $tt2 == *"<<-EOT"* ]]; then
                            lbc=1
                            while [[ $breq -eq 0 ]]; do

                                if [[ ${t1} == "EOT" ]]; then rbc=$(expr $rbc + 1); fi
                                if [[ $rbc -eq $lbc ]]; then
                                    breq=1
                                    echo "breaking tb"
                                else
                                    read line
                                    t1=$(echo "$line")
                                    
                                fi
                            done

                        fi

                        if [[ $tt2 == *"jsonencode"* ]]; then
                            lbc=1
                            while [[ $breq -eq 0 ]]; do
                                if [[ ${t1} == ")" ]]; then rbc=$(expr $rbc + 1); fi
                                if [[ $rbc -eq $lbc ]]; then
                                    breq=1
                                    #echo "breaking tb"
                                else
                                    read line
                                    t1=$(echo "$line")
                                    
                                fi
                            done

                        fi
                    fi

                    #if [[ ${tt1} == *":"* ]];then
                    #    tt2=${tt2//$/&}
                    #    tt1=`echo $tt1 | tr -d '"'`
                    #    echo "$tt1 --- $tt2"
                    #    t1=`printf "\"%s\"=%s" $tt1 "$tt2"`
                    #fi
                    if [[ ${tt1} == *"/"* ]]; then
                        tt1=$(echo $tt1 | tr -d '"')
                        t1=$(printf "\"%s\" = %s" $tt1 "$tt2")
                    fi
                    #template_body = file("example.yml")

                fi
                if [ "$skip" == "0" ]; then
                    #echo $skip $t1
                    echo "$t1" >>$fn
                fi

            done <"$file"

        done # end for

    fi
done

#rm -f t*.txt