#!/bin/bash
# ═══════════════════════════════════════════════════════════════
#  DeskHub Installer
#  Verwendung: bash install.sh [Zielordner]
#  Beispiel:   bash install.sh /var/www/html/deskhub
# ═══════════════════════════════════════════════════════════════

set -e

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

# ── Konfiguration ───────────────────────────────────────────────
GITEA_TOKEN="bc90d44cf0d8adc61a30fec6fde4cbcc64cff429"
GITEA_BASE="https://git.viper.ipv64.net"
REPO="M_Viper/deskhub"
API_URL="$GITEA_BASE/api/v1/repos/$REPO/releases?limit=50&type=semver"

# ── Banner ──────────────────────────────────────────────────────
echo ""
echo -e "${CYAN}${BOLD}"
echo "  ██████╗ ███████╗███████╗██╗  ██╗██╗  ██╗██╗   ██╗██████╗ "
echo "  ██╔══██╗██╔════╝██╔════╝██║ ██╔╝██║  ██║██║   ██║██╔══██╗"
echo "  ██║  ██║█████╗  ███████╗█████╔╝ ███████║██║   ██║██████╔╝"
echo "  ██║  ██║██╔══╝  ╚════██║██╔═██╗ ██╔══██║██║   ██║██╔══██╗"
echo "  ██████╔╝███████╗███████║██║  ██╗██║  ██║╚██████╔╝██████╔╝"
echo "  ╚═════╝ ╚══════╝╚══════╝╚═╝  ╚═╝╚═╝  ╚═╝ ╚═════╝ ╚═════╝ "
echo -e "${NC}"
echo -e "${BOLD}  DeskHub Installer${NC}"
echo "  ─────────────────────────────────────────────────────────"
echo ""

# ── Zielordner bestimmen ────────────────────────────────────────
INSTALL_DIR="${1:-/var/www/html/deskhub}"
echo -e "  ${YELLOW}Installationsordner:${NC} $INSTALL_DIR"
echo ""

# ── Abhängigkeiten prüfen ───────────────────────────────────────
echo -e "  ${BOLD}[1/5]${NC} Abhängigkeiten prüfen..."

for cmd in curl unzip php; do
    if ! command -v $cmd &>/dev/null; then
        echo -e "  ${RED}✗ '$cmd' nicht gefunden. Bitte installieren:${NC}"
        echo "        apt install $cmd   oder   yum install $cmd"
        exit 1
    fi
done
echo -e "  ${GREEN}✓ curl, unzip, php gefunden${NC}"

# ── Neuestes Release ermitteln ──────────────────────────────────
echo ""
echo -e "  ${BOLD}[2/5]${NC} Neuestes Release von Gitea abrufen..."

RELEASE_JSON=$(curl -s --insecure \
    -H "Authorization: token $GITEA_TOKEN" \
    "$API_URL")

TAG_NAME=$(echo "$RELEASE_JSON" | php -r "
    \$data = json_decode(file_get_contents('php://stdin'), true);
    // Neueste Version per version_compare ermitteln
    \$latest = '';
    if (is_array(\$data)) {
        foreach (\$data as \$r) {
            \$tag = \$r['tag_name'] ?? '';
            if (\$tag && (!\$latest || version_compare(ltrim(\$tag,'v'), ltrim(\$latest,'v'), '>'))) {
                \$latest = \$tag;
            }
        }
    }
    echo \$latest;
")

if [ -z "$TAG_NAME" ]; then
    echo -e "  ${RED}✗ Konnte Release-Info nicht abrufen. Token oder Verbindung prüfen.${NC}"
    exit 1
fi

echo -e "  ${GREEN}✓ Neuestes Release: ${BOLD}$TAG_NAME${NC}"

# ── ZIP herunterladen ───────────────────────────────────────────
echo ""
echo -e "  ${BOLD}[3/5]${NC} ZIP herunterladen..."

TMP_ZIP="/tmp/deskhub_${TAG_NAME}.zip"
ZIP_URL="$GITEA_BASE/$REPO/archive/${TAG_NAME}.zip"

curl -L --insecure --progress-bar \
    -H "Authorization: token $GITEA_TOKEN" \
    -o "$TMP_ZIP" \
    "$ZIP_URL"

if [ ! -f "$TMP_ZIP" ] || [ ! -s "$TMP_ZIP" ]; then
    echo -e "  ${RED}✗ Download fehlgeschlagen.${NC}"
    exit 1
fi

echo -e "  ${GREEN}✓ Download abgeschlossen: $TMP_ZIP${NC}"

# ── Entpacken ───────────────────────────────────────────────────
echo ""
echo -e "  ${BOLD}[4/5]${NC} Entpacken nach $INSTALL_DIR ..."

mkdir -p "$INSTALL_DIR"
TMP_EXTRACT="/tmp/deskhub_extract_$$"
mkdir -p "$TMP_EXTRACT"
unzip -q "$TMP_ZIP" -d "$TMP_EXTRACT"

# Unterordner-Prefix erkennen (z.B. deskhub-1.0.0/)
INNER=$(ls "$TMP_EXTRACT" | head -1)
if [ -d "$TMP_EXTRACT/$INNER" ]; then
    cp -r "$TMP_EXTRACT/$INNER/." "$INSTALL_DIR/"
else
    cp -r "$TMP_EXTRACT/." "$INSTALL_DIR/"
fi

rm -rf "$TMP_EXTRACT" "$TMP_ZIP"
echo -e "  ${GREEN}✓ Dateien erfolgreich entpackt${NC}"

# ── Berechtigungen setzen ───────────────────────────────────────
chmod -R 755 "$INSTALL_DIR"
chmod -R 775 "$INSTALL_DIR/uploads" 2>/dev/null || true
chmod -R 775 "$INSTALL_DIR/assets/branding" 2>/dev/null || true
chmod -R 775 "$INSTALL_DIR/assets/avatars" 2>/dev/null || true
chmod -R 775 "$INSTALL_DIR/database" 2>/dev/null || true

# ── Datenbank einrichten ─────────────────────────────────────────
echo ""
echo -e "  ${BOLD}[5/5]${NC} Datenbank einrichten..."

if [ -f "$INSTALL_DIR/database/setup_sqlite.php" ]; then
    php "$INSTALL_DIR/database/setup_sqlite.php" && \
        echo -e "  ${GREEN}✓ SQLite-Datenbank eingerichtet${NC}" || \
        echo -e "  ${YELLOW}⚠ Datenbank-Setup fehlgeschlagen – bitte manuell ausführen${NC}"
fi

# ── Fertig ──────────────────────────────────────────────────────
echo ""
echo -e "  ─────────────────────────────────────────────────────────"
echo -e "  ${GREEN}${BOLD}✓ DeskHub $TAG_NAME erfolgreich installiert!${NC}"
echo ""

# Server-IP ermitteln
SERVER_IP=$(hostname -I 2>/dev/null | awk '{print $1}')
if [ -z "$SERVER_IP" ]; then
    SERVER_IP=$(curl -s --max-time 3 ifconfig.me 2>/dev/null || echo "DEINE-IP")
fi

# Webroot-Pfad relativ zu /var/www/html oder /var/www ermitteln
WEB_PATH=""
for webroot in "/var/www/html" "/var/www" "/srv/www/htdocs" "/usr/share/nginx/html"; do
    if [[ "$INSTALL_DIR" == "$webroot"* ]]; then
        WEB_PATH="${INSTALL_DIR#$webroot}"
        break
    fi
done

echo -e "  ${BOLD}Aufruf im Browser:${NC}"
if [ -n "$WEB_PATH" ]; then
    echo -e "  ${CYAN}${BOLD}  http://$SERVER_IP$WEB_PATH${NC}"
    echo -e "  ${CYAN}${BOLD}  http://$SERVER_IP$WEB_PATH/staff/login.php${NC}  ← Admin-Login"
else
    echo -e "  ${CYAN}${BOLD}  http://$SERVER_IP/${INSTALL_DIR##*/}${NC}"
    echo -e "  ${CYAN}${BOLD}  http://$SERVER_IP/${INSTALL_DIR##*/}/staff/login.php${NC}  ← Admin-Login"
fi

echo ""
echo -e "  ${YELLOW}Nächste Schritte:${NC}"
echo "   1. Im Browser öffnen und Installation abschließen"
echo "   2. Admin-Konto unter /staff/login.php anlegen"
echo "   3. Einstellungen unter /staff/settings.php konfigurieren"
echo ""
echo "  ─────────────────────────────────────────────────────────"
echo ""