legit-commit

#!/bin/dash  
export PATH=$PATH:.
# usage error
if [ $# -lt 2 ]
then
    echo "usage: legit-commit [-a] -m 'message'"
    exit
fi  

# if index is empty then print error then print 'nothing to commit' 
if [ ! "$(ls -A .legit/index/)" ]
then
    echo "nothing to commit"
    exit
fi


# locating most recent commit
found=1
recent=0
while [ $((found)) -eq 1 ]
do
    dir=.legit/commit.$recent
    if [ -d "$dir" ]
    then 
        recent=$(($recent + 1))
    else
        found=0
    fi
done
    
recent=$(($recent - 1))


# checks if '-a' is the second argument
if [ "$1" = '-a' ]
then
    if [ "$2" != '-m' ]
    then 
        echo "usage: legit-commit [-a] -m 'message'"
        exit
    fi
    
    # go through files in index
    files=.legit/index/*
    for file in $files;
    do
        #split
        file_to_add=$(echo "$file" | cut -d'/' -f3)
        # call init-add on each files
        # ./legit-add "$file_to_add"
        legit-add "$file_to_add"        
    done
    
    # call init-commit: init-commit -m $3
    #./legit-commit -m "$3"
    legit-commit -m "$3"
    exit
fi


# if there is no -a then normal commit will happen which is below

if [ "$1" != '-m' ]
then
    echo "usage: legit-commit [-a] -m 'message'"
    exit
fi 

# 5 represents all items created when legit-init was run + commit.0
if [ "$(ls .legit | wc -l)" -ge 5 ]     
then
    
    dir1=.legit/index/
    dir2=.legit/commit.$recent/
    
    if [ ! "$(diff -qr $dir1 $dir2)" ]
    then
        echo "nothing to commit"
        exit
    fi
fi

# if no errors were detected then commit
message=$2
i=0
present=1
# loop until find next available commit number 
while [ $((present)) -eq 1 ]
do
    new_commit=.legit/commit.$i
    if [ -d "$new_commit" ]
    then 
        i=$(($i + 1)) 
    else 
        mkdir $new_commit
        present=0
    fi
done        


source=.legit/index/*
for file in $source;
do
    cp $file $new_commit
done

echo "Committed as commit $i"
echo "$i $message\n$(cat .legit/log)" > .legit/log