#!/bin/bash

# ********** 环境变量定义 **********
#
# 应用所在目录
APP_HOME=$(cd "$(dirname "$0")" && pwd)
# 应用名称
APP_NAME=$(basename "$APP_HOME")
APP_NAME="${APP_NAME#app-}"
# 扩展环境变量定义
if [ -f "$APP_HOME/.env" ]; then
    . "$APP_HOME/.env"
fi

app_usage() {
    echo "usage: $0 <command> [args]"
    echo;
    echo "commands:"
    if [ -d "$APP_HOME/mods" ]; then
        for file in "$APP_HOME"/mods/*.sh; do
            if [ -f "$file" ]; then
                filename=$(basename "$file")
                cmd_name=${filename#app-}
                cmd_name=${cmd_name%.sh}
                echo "  $cmd_name"
            fi
        done
    fi
    echo;
    echo "args:"
    echo "  -h, --help         show the help documentation"
    echo "  -v, --version      show the version"
}

app_handle() {
    if [ ! -f "$APP_HOME/mods/$1.sh" ]; then
        echo "Error: unknown command [$1]"
        exit 1
    fi

    . "$APP_HOME/mods/$1.sh"
}

case "$1" in
    -h|--help|"")
        app_usage
        ;;
    -v|--version)
        echo "v0.0.1"
        ;;
    *)
        app_handle $@
        ;;
esac