shell-env

#!/bin/bash

# user level apps
export LOCAL_PATH="${HOME}/local"
export LOCAL_BIN_PATH="${LOCAL_PATH}/bin"
mkdir -p $LOCAL_BIN_PATH

# user level python
PY_VERSION="${PY_VERSION:-3.13}"
PY_EXEC="python${PY_VERSION}"
PY_HOME="${HOME}/.py${PY_VERSION}"
PIP_EXEC="pip${PY_VERSION}"

# colors
export COLOR_RED='\033[0;31m'
export COLOR_YELLOW='\033[1;33m'
export COLOR_GREEN='\033[0;32m'
export COLOR_BLUE='\033[1;34m'
export COLOR_CYAN='\033[0;36m'
export COLOR_LIGHT_RED='\033[1;31m'
export COLOR_NONE='\033[0m'

check_platform (){
    if [[ "$OSTYPE" == "linux"* ]]; then
        distro_id=`lsb_release -d`

        if [[ "$distro_id" == *"Debian"* ]] || [[ "$distro_id" == *"Ubuntu"* ]]; then
            export os_platform="debian"
            export AWK_EXEC="awk"
            export SED_EXEC="sed"
        else
            echo "Unsupported Linux distro: $distro_id"
            exit 1
        fi
    elif [[ "$OSTYPE" == "darwin"* ]]; then
        export os_platform="osx"
        export AWK_EXEC="gawk"
        export SED_EXEC="gsed"
    fi
}

check_platform

user_confirm (){
    prompt="${1}"
    defval="${2:-n}"

    read -p "$(echo -e "${COLOR_BLUE}${prompt} Continue? (y/n)${COLOR_NONE} ")" -n 1 -r confirm_result
    echo
    if [[ $confirm_result != "y" ]] && [[ $confirm_result != "Y" ]]; then
        exit 1
    fi
}

insert_line (){
    target_file="$1"
    line="$2"
    touch "$target_file"
    if ! grep -q "^$line$" "$target_file" ; then
        echo >> "$target_file"
        echo "$line" >> "$target_file"
    fi
}

insert_file (){
    source_file="$1"
    target_file="$2"
    start_marker="$3"
    end_marker="$4"

    [[ ! -f "$source_file" ]] && echo "Source file not found: $source_file" && exit 1
    touch "$target_file"
    cp $target_file "$target_file.bak"

    if grep -q "^$start_marker$" "$target_file" && grep -q "^$end_marker$" "$target_file"; then
        gawk "/^$start_marker$/,/^$end_marker$/ {
            if (/^$start_marker$/) {
                print;
                while ((getline line < \"$source_file\") > 0) {
                    print line
                }
                close(\"$source_file\")
                next
            }
            if (/^$end_marker$/) {
                print;
                next
            }
            next
        }
        {print}"  "$target_file.bak" >"$target_file"
    else
        { echo;
        echo "$start_marker";
        cat "$source_file";
        echo "$end_marker"; } >> "$target_file"
    fi
}


set -e

if [ ! -z "$debug" ]; then
    set -x
fi