#!/bin/bash -eu
# -*- coding: utf-8 -*-

# Authors:
#   Thomas Woerner <twoerner@redhat.com>
#
# Copyright (C) 2020 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


prog="$(basename "$0")"
topdir="$(dirname "$0")"

function usage() {
    cat <<EOF
Usage: $prog [options] <module name> <author name> <author email address> <github_user>

Create new ansible-freeipa module using templates.

Options:
  -m          Create module with member support
  -f          Force creation
  -h          Print this help

EOF
}

member=0
force=0
while getopts "mfh" arg; do
    case $arg in
        m) member=1;;
        f) force=1;;
        h)
            usage;
            exit 0
            ;;
        \?)
            echo "Invalid option: -$OPTARG" >&2
            exit 1
            ;;
        :)
            echo "Option -$OPTARG requires an argument." >&2
            exit 1
            ;;
    esac
done

for (( i=0; i<OPTIND-1; i++)); do
    shift
done

if [ ${#@} -ne 4 ]; then
    usage;
    exit 1
fi

name=$1
author=$2
email=$3
github_user=$4
year=$(date +"%Y")

if [ -z "$name" ] || [ -z "$author" ] || [ -z "$email" ] || [ -z "$github_user" ]; then
    [ -z "$name" ] && echo "ERROR: name is not valid"
    [ -z "$author" ] && echo "ERROR: author is not valid"
    [ -z "$email" ] && echo "ERROR: email is not valid"
    [ -z "$github_user" ] && echo "ERROR: github_user is not valid"
    echo
    usage;
    exit 1;
fi

if [ -f "plugins/modules/ipa$name.py" ]; then
    if [ $force == 0 ]; then
        echo "ERROR: The module plugins/modules/ipa$name.py already exists"
        exit 0
    else
        echo "WARNING: Overwriting module plugins/modules/ipa$name.py"
    fi
fi
if [ -f "README-$name.md" ]; then
    if [ $force == 0 ]; then
        echo "ERROR: The module docs file README-$name.md already exists"
        exit 0
    else
        echo "WARNING: Overwriting module docs file README-$name.md"
    fi
fi
if [ -f "playbooks/$name" ]; then
    if [ $force == 0 ]; then
        echo "ERROR: playbooks/$name already exists"
        exit 0
    else
        echo "WARNING: Overwriting playbooks/$name"
    fi
fi
if [ -d "playbooks/$name" ]; then
    if [ $force == 0 ]; then
        echo "ERROR: The playbooks folder playbooks/$name already exists"
        exit 0
    else
        echo "WARNING: Overwriting playbooks in folder playbooks/$name"
    fi
else
    if [ -f "playbooks/$name" ]; then
        echo "ERROR: playbooks/$name is not a directory"
        exit 0
    fi
fi
if [ -d "tests/$name" ]; then
    if [ $force == 0 ]; then
        echo "ERROR: The tests folder tests/$name already exists"
        exit 0
    else
        echo "WARNING: Overwriting the tests in folder tests/$name"
    fi
else
    if [ -f "tests/$name" ]; then
        echo "ERROR: tests/$name is not a directory"
        exit 0
    fi
fi

# TEMPLATE function

function template() {
    s="$1"
    d="$2"
    sed -e "s/\$name/$name/g" \
        -e "s/\${name}/${name}/g" \
        -e "s/\${name^}/${name^}/g" \
        -e "s/\$author/$author/g" \
        -e "s/\$email/$email/" \
        -e "s/\$github/$github_user/" \
        -e "s/\$year/$year/" \
        "$topdir/templates/$s" > "$d"
}

# MODULE

dest=plugins/modules
mkdir -p "$dest"

src=ipamodule.py.in
[ "$member" == "1" ] && src=ipamodule+member.py.in
template "$src" "$dest/ipa$name.py"

# README

src=README-module.md.in
[ "$member" == "1" ] && src=README-module+member.md.in
template "$src" "README-$name.md"

# PLAYBOOKS

dest="playbooks/$name"
mkdir -p "$dest"

template module-present.yml.in "$dest/$name-present.yml"
template module-absent.yml.in "$dest/$name-absent.yml"

if [ "$member" == "1" ]; then
    template module-member-present.yml.in "$dest/$name-member-present.yml"
    template module-member-absent.yml.in "$dest/$name-member-absent.yml"
fi

# TESTS

dest="tests/$name"
mkdir -p "$dest"

src=test_module.yml.in
[ "$member" == "1" ] && src=test_module+member.yml.in
template "$src" "$dest/test_$name.yml"
template test_module_client_context.yml.in "$dest/test_${name}_client_context.yml"