#!/usr/bin/env bash

VERSION="1.2.0-SNAPSHOT"

CLASSPATH="$(find lib/dev -follow -mindepth 1 -maxdepth 1 -print0 2> /dev/null | tr \\0 \:)":$CLASSPATH
LEIN_JAR="$HOME/.m2/repository/leiningen/leiningen/$VERSION/leiningen-$VERSION-standalone.jar"
CLOJURE_JAR="$HOME/.m2/repository/org/clojure/clojure/1.2.0-master-SNAPSHOT/clojure-1.2.0-master-SNAPSHOT.jar"

# normalize $0 on certain BSDs
if [ "$(dirname $0)" = "." ]; then
    SCRIPT="$(which $(basename $0))"
else
    SCRIPT="$0"
fi

# resolve symlinks to the script itself portably
while [ -h "$SCRIPT" ] ; do
    ls=`ls -ld "$SCRIPT"`
    link=`expr "$ls" : '.*-> \(.*\)$'`
    if expr "$link" : '/.*' > /dev/null; then
        SCRIPT="$link"
    else
        SCRIPT="`dirname "$SCRIPT"`/$link"
    fi
done

BIN_DIR="$(dirname "$SCRIPT")"

if [ -r "$BIN_DIR/../src/leiningen/core.clj" ]; then
    # Running from source checkout
    LEIN_DIR="$(dirname "$BIN_DIR")"
    LEIN_LIBS="$(find -H $LEIN_DIR/lib -mindepth 2> /dev/null 1 -maxdepth 1 -print0 | tr \\0 \:)"
    CLASSPATH="$LEIN_DIR/src:$LEIN_LIBS:$CLASSPATH"

    if [ "$LEIN_LIBS" = "" -a "$1" != "self-install" ]; then
        echo "Your Leiningen development checkout is missing its dependencies."
        echo "Please download a stable version of Leiningen to fetch the deps."
        echo "See the \"Hacking\" section of the readme for details."
        exit 1
    fi
else
    # Not running from a checkout
    CLASSPATH="$LEIN_JAR:$CLASSPATH"

    if [ ! -r "$LEIN_JAR" -a "$1" != "self-install" ]; then
        echo "Leiningen is not installed. Please run \"lein self-install\"."
        exit 1
    fi
fi

if [ $DEBUG ]; then
    echo $CLASSPATH
fi

HTTP_CLIENT="wget -O"
if type -p curl >/dev/null 2>&1; then
    HTTP_CLIENT="curl -L -o"
fi

if [ "$1" = "self-install" ]; then
    if [[ $VERSION == *SNAPSHOT ]]; then
        echo "The self-install task is only meant for stable releases."
        echo "See the \"Hacking\" section of the README."
        exit 1
    fi
    echo "Downloading Leiningen now..."
    LEIN_DIR=`dirname "$LEIN_JAR"`
    mkdir -p "$LEIN_DIR"
    LEIN_URL="http://github.com/downloads/technomancy/leiningen/leiningen-$VERSION-standalone.jar"
    exec $HTTP_CLIENT "$LEIN_JAR" "$LEIN_URL"
elif [ "$1" = "upgrade" ]; then
    if [[ $VERSION == *SNAPSHOT ]]; then
        echo "The upgrade task is only meant for stable releases."
        echo "See the \"Hacking\" section of the README."
        exit 1
    fi
    if [ ! -w "$SCRIPT" ]; then
        echo "You do not have permission to upgrade the installation in $SCRIPT"
        exit 1
    else
        echo "The script at $SCRIPT will be upgraded to the latest stable version."
        echo -n "Do you want to continue [Y/n]? "
        read RESP
        case "$RESP" in
            y|Y|"")
                echo
                echo "Upgrading..."
                LEIN_SCRIPT_URL="http://github.com/technomancy/leiningen/raw/stable/bin/lein"
                $HTTP_CLIENT "$SCRIPT" "$LEIN_SCRIPT_URL" \
                    && chmod +x "$SCRIPT" \
                    && echo && $SCRIPT self-install && echo && echo "Now running" `$SCRIPT version`
                exit $?;;
            *)
                echo "Aborted."
                exit 1;;
        esac
    fi
else
    if type -p cygpath >/dev/null 2>&1; then
        # When running on Cygwin, use Windows-style paths for java
        CLOJURE_JAR=`cygpath -w "$CLOJURE_JAR"`
        CLASSPATH=`cygpath -wp "$CLASSPATH"`
    fi

    # if [ "$1" = "repl" ]; then
    #     # Use rlwrap if it's available, otherwise fall back to JLine
    #     RLWRAP=`which rlwrap`
    #     JLINE=jline.ConsoleRunner
    #     if [ $RLWRAP != "" ]; then
    #         JLINE=
    #     fi
    # fi

    # The -Xbootclasspath argument is optional here: if the jar
    # doesn't exist everything will still work, it will just have a
    # slower JVM boot.
    exec $RLWRAP java -Xbootclasspath/a:"$CLOJURE_JAR" -client $JAVA_OPTS \
                      -cp "$CLASSPATH" -Dleiningen.version="$VERSION" $JLINE \
                      clojure.main -e "(use 'leiningen.core)(-main)" /dev/null $@
fi