#!/bin/bash

source /home/vinaigrette/config

# ##### #
# Usage #
# ##### #

usage() {
    echo "
Usage:
  `basename $0` <project> <branch> <version>

Arguments:
  <project>     moulinette, yunohost, yunohost-admin or SSOwat
  <branch>      testing or stable
  <distrib>     jessie or stretch
  <version>     x.y.z (ex: 2.6.1)
"
}

if [[ $1 == "-h" ]]; then
    usage
    exit 0
fi

# ################# #
# Check user inputs #
# ################# #

## Project
if [[ $1 =~ ^yunohost|yunohost-admin|moulinette|SSOwat$ ]]; then
    PROJECT=$1
else
    echo "Invalid project $1"
    usage
    exit 1
fi

## Branch
if [[ $2 =~ ^testing|stable$ ]]; then
    BRANCH=$2
else
    echo "Invalid branch $2"
    usage
    exit 2
fi

# Distribution 
if [[ $3 =~ ^jessie|stretch$ ]]; then
    DISTRIB=$3
else
    echo "Invalid distribution $3"
    usage
    exit 3
fi

# Version
VERSION=$4
echo $VERSION
if [ -z "$VERSION" ]; then
    echo "Invalid version $VERSION"
    usage
    exit 4
fi

# Sum up configuration
echo "## #################################################### ##"
echo "## Building $PROJECT $BRANCH release - $VERSION version"
echo "## #################################################### ##"

# Update project's repository
echo ""
echo "## Updating $GIT_REPOS/$PROJECT repository ..."
cd $GIT_REPOS/$PROJECT
git fetch --quiet
git fetch --tags --quiet
git checkout $BRANCH --quiet
git pull origin $BRANCH --quiet

# Check if tag really exists
if git rev-parse "debian/$VERSION" >/dev/null 2>&1; then
    TAG="debian/$VERSION"
else
    echo "Invalid version $VERSION (there's no debian/$VERSION tag in the git repo !)"
    usage
    exit
fi


# Create temporary folder
TMP_FOLDER=$(mktemp -d)

# Extract git archive a desired tag
echo ""
echo "## Exporting in $TMP_FOLDER ..."
git archive $TAG --format=tar | tar -x -C $TMP_FOLDER

# Build Debian package
echo ""
echo "## Building Debian package ..."
echo ""
cd $TMP_FOLDER
$BUILD_DEB -d $BRANCH -c $DISTRIB .