apkgen

#!/data/data/com.termux/files/usr/bin/bash

SCRIPT_DIR="$(cd "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")" && pwd)"
source "$SCRIPT_DIR/lib/common.sh"

# ------------------------------
# BANNER
# ------------------------------
show_banner() {
    clear 2>/dev/null
    gum style \
        --border double \
        --border-foreground 39 \
        --padding "1 3" \
        --align center \
        --width 50 \
        --margin "1 2" \
        "$(gum style --foreground 39 --bold 'apkgen') $(gum style --foreground 241 "v${VERSION}")" \
        "$(gum style --italic --foreground 241 'Generate & Build Android APKs')"
}

# ------------------------------
# BUILD COMMANDS
# ------------------------------
ensure_gradlew() {
    if [ -f "gradlew" ] && [ ! -x "gradlew" ]; then
        chmod +x gradlew
    fi
}

build_apk() {
    local build_type="$1"
    echo
    step "Building APK (${build_type})..."
    ensure_gradlew

    if [ ! -f "gradlew" ]; then
        error "No gradlew found. Are you in an Android project directory?"
    fi

    echo
    if [ "$build_type" = "release" ]; then
        ./gradlew assembleRelease --no-daemon
    else
        ./gradlew assembleDebug --no-daemon
    fi

    local apk_path
    if [ "$build_type" = "release" ]; then
        apk_path=$(find app/build/outputs/apk/release -name "*.apk" 2>/dev/null | head -1)
    else
        apk_path=$(find app/build/outputs/apk/debug -name "*.apk" 2>/dev/null | head -1)
    fi

    echo
    if [ -n "$apk_path" ]; then
        success "Build complete!"
        echo -e "  ${BOLD}APK:${RESET} ${WHITE}$(pwd)/$apk_path${RESET}"
        if [ "$build_type" = "release" ]; then
            echo -e "  ${YELLOW}Warning: Release APK is unsigned. Use apksigner or jarsigner to sign it.${RESET}"
        fi
    else
        error "Build output not found"
    fi
    echo
}

build_flutter() {
    local build_type="$1"
    echo

    if [ ! -f "pubspec.yaml" ]; then
        error "No pubspec.yaml found. Are you in a Flutter project directory?"
    fi

    if [ "$build_type" = "release" ]; then
        error "Release builds are not supported on Termux. Use 'apkgen build flutter' for debug builds."
    fi

    step "Building Flutter APK (debug)..."
    flutter build apk --debug --split-per-abi

    local apk_path
    apk_path=$(find build/app/outputs -name "*.apk" 2>/dev/null | head -1)

    echo
    if [ -n "$apk_path" ]; then
        success "Build complete!"
        echo -e "  ${BOLD}APK:${RESET} ${WHITE}$(pwd)/$apk_path${RESET}"
    else
        error "Build output not found"
    fi
    echo
}

clean_project() {
    echo
    if [ -f "pubspec.yaml" ] && [ -f "lib/main.dart" ]; then
        step "Detected Flutter project"
        flutter clean
        success "Flutter project cleaned"
    elif [ -f "gradlew" ]; then
        step "Detected Gradle project"
        ensure_gradlew
        ./gradlew clean --no-daemon
        success "Gradle project cleaned"
    else
        error "No supported project found. Run this from a project root directory."
    fi
    echo
}

# ------------------------------
# HELP
# ------------------------------
show_help() {
    show_banner
    echo
    echo -e "${BOLD}USAGE${RESET}"
    echo -e "  ${WHITE}apkgen${RESET} ${GREEN}<command>${RESET} ${YELLOW}[options]${RESET}"
    echo
    echo -e "${BOLD}COMMANDS${RESET}"
    echo -e "  ${GREEN}create${RESET} ${YELLOW}<dir>${RESET}                     Create a new Java project (default)"
    echo -e "  ${GREEN}create${RESET} ${YELLOW}<dir> --kotlin${RESET}            Create a new Kotlin project"
    echo -e "  ${GREEN}create${RESET} ${YELLOW}<dir> --flutter${RESET}           Create a new Flutter project"
    echo -e "  ${GREEN}create${RESET} ${YELLOW}<dir> --nativecpp${RESET}         Create a new Native C++ project"
    echo
    echo -e "  ${GREEN}build debug${RESET}               Build debug APK (Gradle)"
    echo -e "  ${GREEN}build release${RESET}             Build release APK (Gradle, unsigned)"
    echo -e "  ${GREEN}build flutter${RESET}             Build debug APK (Flutter)"
    echo
    echo -e "  ${GREEN}clean${RESET}                     Clean build artifacts"
    echo -e "  ${GREEN}help${RESET}                      Show this help message"
    echo
    echo -e "${BOLD}EXAMPLES${RESET}"
    echo -e "  ${DIM}# Create and build a Java app${RESET}"
    echo -e "  ${WHITE}apkgen create myapp${RESET}"
    echo -e "  ${WHITE}cd myapp && apkgen build debug${RESET}"
    echo
    echo -e "  ${DIM}# Create a Kotlin app${RESET}"
    echo -e "  ${WHITE}apkgen create myapp --kotlin${RESET}"
    echo
    echo -e "  ${DIM}# Create a Flutter app${RESET}"
    echo -e "  ${WHITE}apkgen create myapp --flutter${RESET}"
    echo
}

# ------------------------------
# MAIN DISPATCHER
# ------------------------------
if [ $# -eq 0 ]; then
    show_help
    exit 0
fi

case "$1" in
    create)
        shift
        template_type="java"
        app_dir=""

        for arg in "$@"; do
            case "$arg" in
                --kotlin)     template_type="kotlin" ;;
                --flutter)    template_type="flutter" ;;
                --nativecpp)  template_type="nativecpp" ;;
                -*)           error "Unknown option: $arg" ;;
                *)            app_dir="$arg" ;;
            esac
        done

        if [ -z "$app_dir" ]; then
            error "Usage: apkgen create <dir> [--kotlin|--flutter|--nativecpp]"
        fi

        if [ -d "$app_dir" ]; then
            error "Directory '$app_dir' already exists"
        fi

        case "$template_type" in
            java)      source "$SCRIPT_DIR/lib/create_java.sh"; create_java "$app_dir" ;;
            kotlin)    source "$SCRIPT_DIR/lib/create_kotlin.sh"; create_kotlin "$app_dir" ;;
            flutter)   source "$SCRIPT_DIR/lib/create_flutter.sh"; create_flutter "$app_dir" ;;
            nativecpp) source "$SCRIPT_DIR/lib/create_nativecpp.sh"; create_nativecpp "$app_dir" ;;
        esac
        ;;
    build)
        case "$2" in
            debug|release)
                build_apk "$2"
                ;;
            flutter)
                build_flutter "$3"
                ;;
            *)
                error "Usage: apkgen build [debug|release|flutter]"
                ;;
        esac
        ;;
    clean)
        clean_project
        ;;
    help|--help|-h)
        show_help
        ;;
    *)
        error "Unknown command: $1. Run 'apkgen help' for usage."
        ;;
esac