#!/usr/bin/env bash
# USAGE: ./setup.sh             install cbuild to /usr/local
#        ./setup.sh --local     install cbuild to ~/.local

# exit on errors
set -xeo pipefail
CBUILD_VERSION=2.1.0

function version_parse {
    local v="$1"
    IFS_backup="$IFS"
    IFS='.'
    v_array=($v)
    IFS="$IFS_backup"
    version_major=${v_array[0]}
    version_minor=${v_array[1]}
    version_patch=${v_array[2]}
}

version_parse $CBUILD_VERSION
if [ -z "$CBUILD_INSTALL_DIR" ]; then
    if [ "$1" = "--local" ]; then
        CBUILD_INSTALL_DIR="~/.local/share/cbuild/${version_major}.${version_minor}"
        CBUILD_BIN_DIR="~/.local/bin"
        mkdir -p "~/.local"
        mkdir -p "~/.local/share"
        mkdir -p "~/.local/share/cbuild"
        mkdir -p "~/.local/bin"
    else
        CBUILD_INSTALL_DIR="/usr/local/share/cbuild/${version_major}.${version_minor}"
        CBUILD_BIN_DIR="/usr/local/bin"
        mkdir -p "/usr/local/share"
        mkdir -p "/usr/local/share/cbuild"
        mkdir -p "/usr/local/bin"
    fi
fi

rm -rf "$CBUILD_INSTALL_DIR"
cp -r ./ "$CBUILD_INSTALL_DIR"
rm -rf "$CBUILD_INSTALL_DIR/.git"
ln -sf "$(realpath $CBUILD_INSTALL_DIR/cbuild.sh)" -T "$CBUILD_BIN_DIR/cbuild${version_major}.${version_minor}"

ln -sf "$(realpath $CBUILD_INSTALL_DIR/cbuild.sh)" -T "$CBUILD_BIN_DIR/cbuild"