Awk to update file based on match and condition in another - awk

Question

The below awk will produce the tab-delimeted file1 with the difference between $3-$2 calulated for each line and printed in $6. Before the awk is executed only 5 fields exist.
What I am having trouble with updated each $2 value in file2 with the $7 value of file1 if the $1 value of file2 matches the $5 of file1 and $6 in file1 is not intron. If the value of $5 is intron then then the value of $7 in file1 is zero. So for example line 1 in file1 is intron so that is equvilant to zero or skipped (those lines are not needed in the calculation).
It is possible that a $1 value in file2 may not exist in file1 and in this case the value of $2 in file2 is zero. Line3 infile2 is an example and is set to zero because it does not exist in file1. Thank you:).
Awk w/ output
awk '
FNR==NR{ # process same line
b[$4]=$3-$2;
next # process next line
}
{
a[$5]+=($3-$2)
}
{
split($1, b, " "); print b[0], a[b[0]]
}' OFS="\t" file1 file2
Output
-2135
-2135
-2222
-2351
-2351
-2414
File1 tab-delimited
chr5 86667863 86667879 RASA1 intron 16
chr5 86669977 86669995 RASA1 splicing 18
chr5 86670703 86670805 RASA1 exon 102
chr5 86679453 86679547 RASA1 intron 94
chr5 86679571 86679673 RASA1 exon 102
chr19 15088950 15088961 NOTCH2 intron 50
chr19 15288950 15288961 NOTCH3 intron 11
chr19 15308240 15308275 NOTCH3 exon 35
File2 space delimited
RASA1 2135
NOTCH2 0
GIMAP8 87
NOTCH3 129
FOXF2 0
PRB3 63
Desired out after file2 is updated
RASA1 222 `(102+102+18)`
NOTCH2 0
GIMAP8 0
NOTCH3 35 `(35)`
FOXF2 0
PRB3 0
Maybe adding a | after the first awk with:
awk 'FNR==NR { a[$1]=$7; next } { if(a[$5]){$1=a[$5] }; print }'
To update file2

Answer 1

Could you please try following. It will provide you sequence of output in same order of Input_file's order.
awk '
FNR==NR{
if(!b[$1]++){
c[++count]=$1
}
a[$1]
next
}
($4 in a) && $5!="intron"{
a[$4]+=$NF
}
END{
for(i=1;i<=count;i++){
print c[i],a[c[i]]?a[c[i]]:0
}
}' Input_file2 Input_file1
Since your Input_file1 is NOT TAB delimited as per your claim, so in case it is then edit Input_file2 Input_file1 -----> Input_file2 FS="\t" Input_file1. To get output as TAB delimited either append above code's output to | column -t command or set OFS="\t" near to FS="\t" too.
Output will be as follows.
RASA1 222
NOTCH2 0
GIMAP8 0
NOTCH3 35
FOXF2 0
PRB3 0

Answer 2

if I understood it correctly, this should do what you expect
$ awk 'FNR==NR && $5!="intron" {a[$4]+=$3-$2; next}
{$2=($1 in a)?a[$1]:0}1' file1 file2 > file2.updated