#!/bin/bash

REPO_DIR_ANON=""
REPO_DIR_DEVEL="autopackage"
REPO_SERVER="plan99.net"
REPO_PROTOCOL_DEVEL="svn+ssh"
REPO_PROTOCOL_ANON="svn"
DEFAULT_MODULES="apbuild binreloc display-tool foobar frontend lzma main"
ALL_MODULES="apbuild binreloc display-tool foobar frontend gladecompat lzma main mkapspec visual-ldd"
function normal()    { echo -en "\033[0m"; }
function red()       { echo -en "\033[1;31m"; }
function blue()      { echo -en "\033[1;34m"; }
function green()     { echo -en "\033[1;32m"; }
function bold()      { echo -en "\033[1m"; }

subdir="trunk"
list_modules=false;
all_modules=false;
while [ -n "$1" ]; do
    case $1 in
	--branch)
	    branch="$2"
	    subdir="branches/$2"
	    shift
	    ;;
	--branch=*)
	    branch=$(echo $1 | cut -d= -f2)
	    subdir="branches/$branch"
	    ;;
	--tag)
	    tag=$2
	    subdir="tags/$tag"
	    shift
	    ;;
	--tag=*)
	    tag=$(echo $1 | cut -d= -f2)
	    subdir="tags/$tag"
	    ;;
	--user)
	    user="$2"
	    shift
	    ;;
	--user=*)
	    user=$(echo $1 | cut -d= -f2)
	    ;;
	--list-modules)
	    list_modules=true
	    ;;
	--all|--all-modules)
	    all_modules=true;
	    ;;
	--help)
	    echo "Usage: checkout [OPTIONS] [module1 [module2...]]"
	    echo
	    echo "This script will checkout the autopackage source code from subversion to the current directory. Code will be checked out from 'trunk' if no branch or tag is explicitly specified."
	    echo
	    echo "If no modules are specified, the following modules will be checked out:"
	    echo " `bold`$DEFAULT_MODULES`normal`"
	    echo
	    echo "Options"
	    echo -e " --branch=BRANCHNAME\tCheck out code from the branch \"BRANCHNAME\" instead of the trunk"
	    echo -e " --tag=TAGNAME\t\tCheck out code from the tag \"TAGNAME\" instead of the trunk"
	    echo -e " --user=USERNAME\tAccess the repository using ssh account USERNAME on the server (developers only)"
	    echo -e " --list-modules\tList the available modules"
	    echo -e " --all\t\tCheckout all modules in svn"
	    echo -e " --all-modules\tSynonymous to --all"
	    echo
	    exit 1
	    ;;
	-*)
	    echo "Unknown option: $1"
	    echo "Usage: checkout-from-svn [OPTIONS] [module1 [module2...]]"
	    echo "Try '--help' to see more detailed information"
	    exit 2
	    ;;
	*)
	    modules="$modules $1"
	    ;;
    esac
    shift
done

# Set the repository
if [ "$user" ]; then
    REPO_PROTOCOL=$REPO_PROTOCOL_DEVEL
    REPO_DIR=$REPO_DIR_DEVEL
    REPO_SERVER="$user@$REPO_SERVER"
else
    REPO_PROTOCOL=$REPO_PROTOCOL_ANON
    REPO_DIR=$REPO_DIR_ANON
fi

REPO_URL="$REPO_PROTOCOL://$REPO_SERVER/$REPO_DIR"

if $list_modules; then
    echo svn ls "$REPO_URL"
    svn ls "$REPO_URL"
    exit 0
fi

# Determine which modules to check out
if $all_modules; then
    modules="$ALL_MODULES"
elif [ -z "$modules" ]; then
    modules="$DEFAULT_MODULES"
fi

## Remove duplicates and sort the modules
modules=$(echo $modules | tr ' ' '\n' | sort | uniq | tr '\n' ' ')
modulecount=$(echo $modules | wc -w)

## Sanity checks before proceeding: Don't do checkouts if one or more
## of the modules already exists in the current directory.
dirExists=false
for module in $modules; do
    if [ -e "$module" ]; then
	dirExists=true
	existingDirs="$existingDirs $module"
    fi
done
if $dirExists; then
    echo "`red`Warning:`normal` The following module(s) already exist in this directory:"
    echo "`blue`  $existingDirs`normal`"
    echo "Aborting checkout!"
    exit 1;
fi

## Just a quick confirmation from the user before we proceed...
echo "* The following `bold`$modulecount`normal` module(s) will be checked out from Subversion:"
echo "   `blue`$modules`normal`"
if [ "$user" ]; then
    echo "* Repository will be accessed using ssh for user `green`$user`normal` (developer read/write)."
else
    echo "* Repository will be accessed anonymously (read only)";
fi
if [ "$tag" ]; then
    echo "* Code will be checked out from the tag `green`\"$tag\"`normal`."
elif [ "$branch" ]; then
    echo "* Code will be checked out from the `green`\"$branch\"`normal` branch."
else
    echo "* Code will be checked out from svn `bold`HEAD`normal`."
fi
# It seems some versions of bash (dapper for instance) does not
# give the script a real stdin when the script is piped to it.
if tty -s; then
    echo
    echo "Press [Enter] to continue, or CTRL-C to bail out"
    read
fi
for module in $modules; do
    echo "`bold`* Checking out \"`blue`$module`normal;bold`\"...`normal`"
    echo "svn co $REPO_URL/$module/$subdir $module"
    svn co "$REPO_URL/$module/$subdir" $module
done