#!/bin/bash
# ════════════════════════════════════════════════
#  ARIA Cockpit — Android Dev Setup
#  Installiert alle Abhängigkeiten für den Build
#  und generiert das native Android-Projekt.
#  Verwendung: ./setup.sh
# ════════════════════════════════════════════════

set -e

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
cd "$SCRIPT_DIR"

# ── Farben ────────────────────────────────────
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
NC='\033[0m'

echo -e "${CYAN}╔═══════════════════════════════════════╗${NC}"
echo -e "${CYAN}║   ARIA Cockpit — Dev Setup            ║${NC}"
echo -e "${CYAN}╚═══════════════════════════════════════╝${NC}"
echo ""

# ── Betriebssystem erkennen ───────────────────
OS="unknown"
PKG_INSTALL=""

if [ -f /etc/debian_version ]; then
    OS="debian"
    PKG_INSTALL="sudo apt install -y"
elif [ -f /etc/fedora-release ]; then
    OS="fedora"
    PKG_INSTALL="sudo dnf install -y"
elif [ -f /etc/arch-release ]; then
    OS="arch"
    PKG_INSTALL="sudo pacman -S --noconfirm"
elif [[ "$OSTYPE" == "darwin"* ]]; then
    OS="macos"
    PKG_INSTALL="brew install"
fi

echo -e "${CYAN}System: ${OS}${NC}"
echo ""

# ── Hilfsfunktionen ──────────────────────────
installed() {
    command -v "$1" &> /dev/null
}

step() {
    echo ""
    echo -e "${GREEN}══════════════════════════════════════${NC}"
    echo -e "${GREEN}  $1${NC}"
    echo -e "${GREEN}══════════════════════════════════════${NC}"
}

skip() {
    echo -e "  ${GREEN}✓${NC} $1 bereits vorhanden"
}

install_pkg() {
    if [ -z "$PKG_INSTALL" ]; then
        echo -e "${RED}  Kann $1 nicht automatisch installieren (unbekanntes OS).${NC}"
        echo -e "${RED}  Bitte manuell installieren: $1${NC}"
        return 1
    fi
    $PKG_INSTALL "$@"
}

# ══════════════════════════════════════════════
#  1. Basis-Tools (curl, unzip, git)
# ══════════════════════════════════════════════
step "1/7 — Basis-Tools prüfen"

NEED_TOOLS=()
for TOOL in curl unzip git; do
    if ! installed "$TOOL"; then
        NEED_TOOLS+=("$TOOL")
    else
        skip "$TOOL"
    fi
done

if [ ${#NEED_TOOLS[@]} -gt 0 ]; then
    echo "  Installiere: ${NEED_TOOLS[*]}"
    install_pkg "${NEED_TOOLS[@]}"
fi

# ══════════════════════════════════════════════
#  2. Node.js
# ══════════════════════════════════════════════
step "2/7 — Node.js prüfen"

if installed node; then
    NODE_VERSION=$(node -v)
    NODE_MAJOR=$(echo "$NODE_VERSION" | sed 's/v//' | cut -d. -f1)
    if [ "$NODE_MAJOR" -ge 18 ]; then
        skip "Node.js $NODE_VERSION"
    else
        echo -e "${YELLOW}  Node.js $NODE_VERSION ist zu alt (mindestens v18 nötig)${NC}"
        echo -e "${YELLOW}  Bitte Node.js updaten: https://nodejs.org/${NC}"
        exit 1
    fi
else
    echo "  Node.js nicht gefunden — installiere..."
    case "$OS" in
        debian)
            curl -fsSL https://deb.nodesource.com/setup_22.x | sudo -E bash -
            sudo apt install -y nodejs
            ;;
        fedora)
            curl -fsSL https://rpm.nodesource.com/setup_22.x | sudo bash -
            sudo dnf install -y nodejs
            ;;
        arch)   install_pkg nodejs npm ;;
        macos)  install_pkg node ;;
        *)
            echo -e "${RED}  Bitte Node.js manuell installieren: https://nodejs.org/${NC}"
            exit 1
            ;;
    esac
    echo -e "  ${GREEN}✓${NC} Node.js $(node -v) installiert"
fi

# ══════════════════════════════════════════════
#  3. JDK 17
# ══════════════════════════════════════════════
step "3/7 — Java JDK 17 prüfen"

# JDK 17 wird EXAKT benötigt — nicht 21, nicht 22.
# Android Gradle Plugin 8.1 + Gradle 8.3 haben Probleme mit JDK 21+ (jlink-Bug).
NEED_JDK=false
JDK17_HOME=""

# Prüfe ob JDK 17 bereits installiert ist (auch wenn JDK 21 der Default ist)
for JDK_PATH in \
    /usr/lib/jvm/java-17-openjdk-amd64 \
    /usr/lib/jvm/temurin-17-jdk-amd64 \
    /usr/lib/jvm/java-17-openjdk \
    /usr/lib/jvm/jdk-17 \
    /usr/lib/jvm/zulu-17 \
    /Library/Java/JavaVirtualMachines/temurin-17.jdk/Contents/Home \
    /Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home; do
    if [ -x "$JDK_PATH/bin/java" ]; then
        JDK17_HOME="$JDK_PATH"
        break
    fi
done

# Prüfe ob es wirklich der volle JDK ist (nicht nur JRE) — jlink muss existieren
if [ -n "$JDK17_HOME" ] && [ ! -x "$JDK17_HOME/bin/jlink" ]; then
    echo -e "  ${YELLOW}JDK 17 gefunden in $JDK17_HOME, aber nur JRE (jlink fehlt)${NC}"
    echo -e "  ${YELLOW}Installiere vollen JDK 17...${NC}"
    JDK17_HOME=""
fi

if [ -n "$JDK17_HOME" ]; then
    skip "JDK 17 (vollständig) in $JDK17_HOME"
else
    echo "  JDK 17 nicht gefunden — installiere..."
    NEED_JDK=true
    case "$OS" in
        debian) install_pkg openjdk-17-jdk ;;
        fedora) install_pkg java-17-openjdk-devel ;;
        arch)   install_pkg jdk17-openjdk ;;
        macos)  install_pkg openjdk@17 ;;
        *)
            echo -e "${RED}  Bitte JDK 17 manuell installieren${NC}"
            exit 1
            ;;
    esac
    # Nochmal suchen nach Installation
    for JDK_PATH in \
        /usr/lib/jvm/java-17-openjdk-amd64 \
        /usr/lib/jvm/temurin-17-jdk-amd64 \
        /usr/lib/jvm/java-17-openjdk; do
        if [ -x "$JDK_PATH/bin/java" ]; then
            JDK17_HOME="$JDK_PATH"
            break
        fi
    done
    echo -e "  ${GREEN}✓${NC} JDK 17 installiert"
fi

# Hinweis falls JDK 21+ der Default ist
if installed java; then
    CURRENT_JAVA=$(java -version 2>&1 | head -1 | cut -d'"' -f2 | cut -d'.' -f1)
    if [ "$CURRENT_JAVA" -gt 17 ] 2>/dev/null && [ -n "$JDK17_HOME" ]; then
        echo -e "  ${YELLOW}Hinweis: Standard-Java ist JDK $CURRENT_JAVA, aber Build nutzt JDK 17${NC}"
        echo -e "  ${YELLOW}build.sh setzt JAVA_HOME automatisch auf $JDK17_HOME${NC}"
    fi
fi

# ══════════════════════════════════════════════
#  4. Android SDK (Command Line Tools)
# ══════════════════════════════════════════════
step "4/7 — Android SDK prüfen"

ANDROID_SDK_DIR="${ANDROID_HOME:-${ANDROID_SDK_ROOT:-$HOME/Android/Sdk}}"

if [ -d "$ANDROID_SDK_DIR/platforms" ] && [ -d "$ANDROID_SDK_DIR/build-tools" ]; then
    skip "Android SDK in $ANDROID_SDK_DIR"
else
    echo "  Android SDK nicht gefunden — installiere..."
    echo ""

    mkdir -p "$ANDROID_SDK_DIR"

    # Command Line Tools herunterladen
    CMDLINE_TOOLS_URL="https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip"
    if [[ "$OSTYPE" == "darwin"* ]]; then
        CMDLINE_TOOLS_URL="https://dl.google.com/android/repository/commandlinetools-mac-11076708_latest.zip"
    fi

    echo "  Lade Command Line Tools herunter..."
    TEMP_ZIP="/tmp/android-cmdline-tools.zip"
    curl -L -o "$TEMP_ZIP" "$CMDLINE_TOOLS_URL"

    echo "  Entpacke..."
    mkdir -p "$ANDROID_SDK_DIR/cmdline-tools"
    unzip -q -o "$TEMP_ZIP" -d "$ANDROID_SDK_DIR/cmdline-tools"
    mv "$ANDROID_SDK_DIR/cmdline-tools/cmdline-tools" "$ANDROID_SDK_DIR/cmdline-tools/latest" 2>/dev/null || true
    rm -f "$TEMP_ZIP"

    SDKMANAGER="$ANDROID_SDK_DIR/cmdline-tools/latest/bin/sdkmanager"

    echo "  Akzeptiere Lizenzen..."
    yes | "$SDKMANAGER" --licenses > /dev/null 2>&1 || true

    echo "  Installiere SDK Komponenten (dauert ein paar Minuten)..."
    "$SDKMANAGER" \
        "platforms;android-34" \
        "build-tools;34.0.0" \
        "platform-tools"

    echo -e "  ${GREEN}✓${NC} Android SDK installiert in $ANDROID_SDK_DIR"
fi

# ── ANDROID_HOME in Shell-Profil setzen ──────
export ANDROID_HOME="$ANDROID_SDK_DIR"
export ANDROID_SDK_ROOT="$ANDROID_SDK_DIR"
export PATH="$ANDROID_HOME/platform-tools:$ANDROID_HOME/cmdline-tools/latest/bin:$PATH"

SHELL_PROFILE=""
if [ -f "$HOME/.bashrc" ]; then
    SHELL_PROFILE="$HOME/.bashrc"
elif [ -f "$HOME/.zshrc" ]; then
    SHELL_PROFILE="$HOME/.zshrc"
fi

if [ -n "$SHELL_PROFILE" ]; then
    if ! grep -q "ANDROID_HOME" "$SHELL_PROFILE" 2>/dev/null; then
        echo "" >> "$SHELL_PROFILE"
        echo "# Android SDK (ARIA Setup)" >> "$SHELL_PROFILE"
        echo "export ANDROID_HOME=\"$ANDROID_SDK_DIR\"" >> "$SHELL_PROFILE"
        echo "export ANDROID_SDK_ROOT=\"\$ANDROID_HOME\"" >> "$SHELL_PROFILE"
        echo 'export PATH="$ANDROID_HOME/platform-tools:$ANDROID_HOME/cmdline-tools/latest/bin:$PATH"' >> "$SHELL_PROFILE"
        echo -e "  ${CYAN}→ ANDROID_HOME in $SHELL_PROFILE eingetragen${NC}"
    fi
fi

# ══════════════════════════════════════════════
#  5. Node Dependencies
# ══════════════════════════════════════════════
step "5/7 — Node Dependencies & Metro-Config"

# Metro-Config-Dateien prüfen/erstellen (nötig für JS-Bundle im Release-Build)
if [ ! -f "metro.config.js" ]; then
    echo "  Erstelle metro.config.js..."
    cat > metro.config.js << 'METROEOF'
const {getDefaultConfig, mergeConfig} = require('@react-native/metro-config');

/**
 * Metro configuration
 * https://reactnative.dev/docs/metro
 */
const config = {};

module.exports = mergeConfig(getDefaultConfig(__dirname), config);
METROEOF
    echo -e "  ${GREEN}✓${NC} metro.config.js erstellt"
else
    skip "metro.config.js"
fi

if [ ! -f "babel.config.js" ]; then
    echo "  Erstelle babel.config.js..."
    cat > babel.config.js << 'BABELEOF'
module.exports = {
  presets: ['module:metro-react-native-babel-preset'],
};
BABELEOF
    echo -e "  ${GREEN}✓${NC} babel.config.js erstellt"
else
    skip "babel.config.js"
fi

if [ ! -f ".watchmanconfig" ]; then
    echo "  Erstelle .watchmanconfig..."
    echo '{}' > .watchmanconfig
    echo -e "  ${GREEN}✓${NC} .watchmanconfig erstellt"
else
    skip ".watchmanconfig"
fi

# Alte node_modules aufräumen falls vorhanden (verhindert veraltete/korrupte Pakete)
if [ -d "node_modules" ]; then
    echo "  Räume alte node_modules auf..."
    rm -rf node_modules
fi

npm install

# ══════════════════════════════════════════════
#  6. React Native — natives Android-Projekt
# ══════════════════════════════════════════════
step "6/7 — React Native Android-Projekt generieren"

if [ -f "android/gradlew" ]; then
    skip "Natives Android-Projekt (android/gradlew)"
else
    echo "  Generiere natives Android-Projekt..."
    echo "  (React Native init in Temp-Verzeichnis → kopiere android/ Ordner)"
    echo ""

    TEMP_DIR="/tmp/aria-rn-init-$$"
    rm -rf "$TEMP_DIR"

    # React Native Projekt in Temp-Verzeichnis erstellen
    npx --yes @react-native-community/cli@latest init AriaCockpit \
        --directory "$TEMP_DIR" \
        --skip-git-init \
        --install-pods false \
        --version 0.73.4 \
        2>&1 | while IFS= read -r line; do echo "    $line"; done

    if [ -d "$TEMP_DIR/android" ]; then
        # Natives Android-Verzeichnis kopieren
        cp -r "$TEMP_DIR/android" ./android/

        # App-Name in strings.xml anpassen
        if [ -f "android/app/src/main/res/values/strings.xml" ]; then
            sed -i 's/AriaCockpit/ARIA/g' "android/app/src/main/res/values/strings.xml"
        fi

        # Gradle Wrapper ausführbar machen
        chmod +x android/gradlew 2>/dev/null || true

        echo -e "  ${GREEN}✓${NC} Natives Android-Projekt erstellt in android/android/"
    else
        echo -e "${RED}  Fehler: React Native Init hat kein android/ Verzeichnis erzeugt.${NC}"
        echo -e "${RED}  Temp-Verzeichnis zur Inspektion: $TEMP_DIR${NC}"
        echo ""
        echo -e "${YELLOW}  Manueller Fallback:${NC}"
        echo -e "${YELLOW}    cd /tmp${NC}"
        echo -e "${YELLOW}    npx @react-native-community/cli@latest init AriaCockpit${NC}"
        echo -e "${YELLOW}    cp -r /tmp/AriaCockpit/android $SCRIPT_DIR/android/${NC}"
        exit 1
    fi

    # Temp aufräumen
    rm -rf "$TEMP_DIR"
fi

# ══════════════════════════════════════════════
#  7. Gradle konfigurieren & Cache aufräumen
# ══════════════════════════════════════════════
step "7/7 — Gradle konfigurieren & Cache aufräumen"

# gradle.properties: compileSdk-Warnung unterdrücken
if [ -f "android/gradle.properties" ]; then
    if ! grep -q "android.suppressUnsupportedCompileSdk" "android/gradle.properties" 2>/dev/null; then
        echo "" >> "android/gradle.properties"
        echo "# ARIA: compileSdk-Warnung unterdrücken (AGP 8.1 vs SDK 35)" >> "android/gradle.properties"
        echo "android.suppressUnsupportedCompileSdk=35" >> "android/gradle.properties"
        echo -e "  ${GREEN}✓${NC} gradle.properties: suppressUnsupportedCompileSdk=35"
    else
        skip "gradle.properties bereits konfiguriert"
    fi
fi

# Gradle Build-Cache aufräumen (verhindert Probleme nach Dependency-Wechsel)
if [ -d "android/.gradle" ]; then
    echo "  Räume Gradle Build-Cache auf..."
    rm -rf android/.gradle
    echo -e "  ${GREEN}✓${NC} Gradle-Cache gelöscht"
fi

if [ -d "android/app/build" ]; then
    echo "  Räume alten Build auf..."
    rm -rf android/app/build
    echo -e "  ${GREEN}✓${NC} Alter Build gelöscht"
fi

# ══════════════════════════════════════════════
#  Zusammenfassung
# ══════════════════════════════════════════════
echo ""
echo -e "${GREEN}╔═══════════════════════════════════════════════════╗${NC}"
echo -e "${GREEN}║   Setup abgeschlossen!                            ║${NC}"
echo -e "${GREEN}╠═══════════════════════════════════════════════════╣${NC}"

NODE_V=$(node -v 2>/dev/null || echo "?")
JAVA_V=$(java -version 2>&1 | head -1 | cut -d'"' -f2 || echo "?")

echo -e "${GREEN}║                                                   ║${NC}"
echo -e "${GREEN}║   Node.js:      ${NC}${NODE_V}"
echo -e "${GREEN}║   Java:         ${NC}${JAVA_V}"
echo -e "${GREEN}║   Android SDK:  ${NC}${ANDROID_SDK_DIR}"
echo -e "${GREEN}║   Gradle:       ${NC}$([ -f android/gradlew ] && echo '✓ vorhanden' || echo '✗ fehlt')"
echo -e "${GREEN}║                                                   ║${NC}"
echo -e "${GREEN}║   Nächster Schritt:                               ║${NC}"
echo -e "${GREEN}║   ${NC}./build.sh          ${GREEN}(Release-APK bauen)${NC}"
echo -e "${GREEN}║   ${NC}./build.sh debug    ${GREEN}(Debug-APK bauen)${NC}"
echo -e "${GREEN}║                                                   ║${NC}"
echo -e "${GREEN}╚═══════════════════════════════════════════════════╝${NC}"
echo ""

if [ -n "$SHELL_PROFILE" ] && grep -q "ANDROID_HOME" "$SHELL_PROFILE" 2>/dev/null; then
    echo -e "${YELLOW}Hinweis: Shell neu starten oder ausführen:${NC}"
    echo -e "${YELLOW}  source $SHELL_PROFILE${NC}"
    echo ""
fi