#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

# --- Colors ---
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
BOLD='\033[1m'
DIM='\033[2m'
NC='\033[0m'

# --- Config ---
KEYSTORE_DIR="keystore"
KEYSTORE_FILE="$KEYSTORE_DIR/radio247-release.jks"
KEY_ALIAS="radio247"
DIST_DIR="dist"
GRADLE_BUILD_FILE="app/build.gradle.kts"

banner() {
    echo ""
    echo -e "${CYAN}╔══════════════════════════════════╗${NC}"
    echo -e "${CYAN}║${BOLD}     Radio 247 Build Tool         ${NC}${CYAN}║${NC}"
    echo -e "${CYAN}╚══════════════════════════════════╝${NC}"
    echo ""
}

info()    { echo -e "${BLUE}▸${NC} $1"; }
success() { echo -e "${GREEN}✓${NC} $1"; }
warn()    { echo -e "${YELLOW}⚠${NC} $1"; }
error()   { echo -e "${RED}✗${NC} $1"; }

get_version_name() {
    grep 'versionName' "$GRADLE_BUILD_FILE" | head -1 | sed 's/.*"\(.*\)".*/\1/'
}

preflight_check() {
    local ok=true

    if ! command -v java &>/dev/null && [[ -z "${JAVA_HOME:-}" ]]; then
        error "Java not found. Install JDK 17+ or set JAVA_HOME."
        ok=false
    fi

    if [[ ! -x "./gradlew" ]]; then
        error "Gradle wrapper not found or not executable."
        ok=false
    fi

    if [[ "$ok" != true ]]; then
        exit 1
    fi
}

ensure_dist_dir() {
    mkdir -p "$DIST_DIR"
}

main_menu() {
    echo -e "${BOLD}What would you like to do?${NC}"
    echo ""
    echo -e "  ${BOLD}1)${NC} Build Release APK  ${DIM}(signed, shareable)${NC}"
    echo -e "  ${BOLD}2)${NC} Build Debug APK    ${DIM}(quick, for testing)${NC}"
    echo -e "  ${BOLD}3)${NC} Manage Keystore    ${DIM}(create or check signing key)${NC}"
    echo -e "  ${BOLD}4)${NC} Clean              ${DIM}(remove build artifacts)${NC}"
    echo -e "  ${BOLD}5)${NC} Exit"
    echo ""

    local choice
    read -rp "> " choice
    case $choice in
        1) build_release ;;
        2) build_debug ;;
        3) manage_keystore ;;
        4) clean_build ;;
        5) echo ""; exit 0 ;;
        *) warn "Invalid choice. Pick 1-5." ;;
    esac
}

# Placeholder functions — implemented in subsequent tasks
build_release()    { warn "Not yet implemented"; }
build_debug()      { warn "Not yet implemented"; }
manage_keystore()  { warn "Not yet implemented"; }
clean_build()      { warn "Not yet implemented"; }

# --- Main ---
preflight_check
banner
while true; do
    main_menu
    echo ""
done