#!/bin/bash

USERNAME='git'
HOSTNAME=$(hostname -I | xargs | awk '{print $1;}')
SERVER=$USERNAME'@'$HOSTNAME
WORKDIR='repos'
WORKDIRPATH='/home/repos'
INDEXDIR='/var/www/html/'$WORKDIR
INDEX_HTML=$INDEXDIR'/index.html'
CURRENT_TIME=$(date +"%x %r %Z")
TIME_STAMP="Generated $CURRENT_TIME"
TITLE="Local Git Repo"

function readme_listing () {
    cd $1
    READMEBLOB=$(su -c "git ls-tree -r HEAD 2>/dev/null | grep -i  README.md" $USERNAME)
    if test -z "$READMEBLOB"
    then
        #echo "\$README is NULL"
        CONTENT='NO README FILE'
    else
        #echo "\$README is NOT NULL"
        READMEHASH=$(echo $READMEBLOB | awk '{print $3}')
        CONTENT=$(su -c "git cat-file -p $READMEHASH 2>/dev/null | sed -n '3p'" $USERNAME)
    fi
    echo $CONTENT
   return
}

function repos_listing () {
cd $WORKDIRPATH
for FILE in *; do
    RML='This is not a repo'
    if [[ -d $FILE ]]
    then
        RML=$(readme_listing "$FILE")
    fi
cat << __EOF__
                <tr><td onclick="c2cb('$FILE')">$FILE</td>
                <td onclick="c2cb('$SERVER:$WORKDIRPATH/$FILE')"> $WORKDIRPATH/$FILE</td>
                <td>$RML</td></tr>
__EOF__
        done
    return
}

function create_indexdir () {
	$(sudo mkdir -p $INDEXDIR && sudo chmod 777 $INDEXDIR)
	$(mkdir -p $INDEXDIR/css $INDEXDIR/js)
cat <<CSS > "$INDEXDIR/css/style.css"
@charset "utf-8";
body{
    margin: 0px;
    color: #f5f0e1;
    background-color: #1e3d59;
    font-size: 100%;
}

table, td, th{
        font-size: 100%;
    border: 1px solid #12a4d9;
        border-collapse: collapse;
}

table.center{
        margin-left: auto;
        margin-right: auto;
}

h1, p{
        text-align: center;
}
CSS

cat <<JS > "$INDEXDIR/js/script.js"
function c2cb(ele){
                var tempTxt=document.createElement("input");
                tempTxt.value=ele;
                document.body.appendChild(tempTxt);
                tempTxt.select();
                document.execCommand("copy");
                document.body.removeChild(tempTxt);
                //alert("Copied: "+tempTxt.value);
}
JS
	return
}

function generate_html () {
cd $WORKDIRPATH
cat << __EOF__ > $INDEX_HTML
<!DOCTYPE html>
<html>
        <head>
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>$TITLE</title>
        <link  rel="stylesheet"  href="./css/style.css">
        </head>
        <body>
                <h1>$TITLE</h1>
                <p>$TIME_STAMP</p>
                <div>
                <table class="center">
                        $(repos_listing)
                </table>
                </div>
        <script src="js/script.js"></script>
        </body>
</html>
__EOF__

    return
}

if [[ -d "$INDEXDIR" ]]; then
    cd $WORKDIRPATH
    $(generate_html)
else 
    cd $WORKDIRPATH
	$(create_indexdir)
    $(generate_html)
fi