#!/bin/sh
# ============================================================================
# 本地构建 .ipk 包 (无需 OpenWrt SDK)
# 用法: sh scripts/build_ipk.sh [output_dir]
# ============================================================================
set -e

SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
PKG_DIR=$(cd "$SCRIPT_DIR/.." && pwd)
OUT_DIR="${1:-$PKG_DIR/dist}"
# 确保 OUT_DIR 是绝对路径
case "$OUT_DIR" in
	/*) ;;
	*) OUT_DIR="$PKG_DIR/$OUT_DIR" ;;
esac
mkdir -p "$OUT_DIR"
PKG_NAME="luci-app-openclaw"
PKG_VERSION=$(cat "$PKG_DIR/VERSION" 2>/dev/null | tr -d '[:space:]' || echo "1.0.0")
PKG_RELEASE="1"

echo "=== 构建 ${PKG_NAME} .ipk 包 ==="

STAGING=$(mktemp -d)
trap "rm -rf '$STAGING'" EXIT

# ── 构建 data.tar.gz ──
DATA_DIR="$STAGING/data"
mkdir -p "$DATA_DIR"

# UCI config
mkdir -p "$DATA_DIR/etc/config"
cp "$PKG_DIR/root/etc/config/openclaw" "$DATA_DIR/etc/config/"

# UCI defaults
mkdir -p "$DATA_DIR/etc/uci-defaults"
cp "$PKG_DIR/root/etc/uci-defaults/99-openclaw" "$DATA_DIR/etc/uci-defaults/"
chmod +x "$DATA_DIR/etc/uci-defaults/99-openclaw"

# init.d
mkdir -p "$DATA_DIR/etc/init.d"
cp "$PKG_DIR/root/etc/init.d/openclaw" "$DATA_DIR/etc/init.d/"
chmod +x "$DATA_DIR/etc/init.d/openclaw"

# profile.d (v1.0.16+: 全局环境变量)
mkdir -p "$DATA_DIR/etc/profile.d"
cp "$PKG_DIR/root/etc/profile.d/openclaw.sh" "$DATA_DIR/etc/profile.d/"
chmod +x "$DATA_DIR/etc/profile.d/openclaw.sh"

# bin
mkdir -p "$DATA_DIR/usr/bin"
cp "$PKG_DIR/root/usr/bin/openclaw-env" "$DATA_DIR/usr/bin/"
chmod +x "$DATA_DIR/usr/bin/openclaw-env"

# libexec helpers
mkdir -p "$DATA_DIR/usr/libexec"
cp "$PKG_DIR/root/usr/libexec/openclaw-paths.sh" "$DATA_DIR/usr/libexec/"
cp "$PKG_DIR/root/usr/libexec/openclaw-node.sh" "$DATA_DIR/usr/libexec/"
chmod +x "$DATA_DIR/usr/libexec/openclaw-paths.sh" "$DATA_DIR/usr/libexec/openclaw-node.sh"

# LuCI controller
mkdir -p "$DATA_DIR/usr/lib/lua/luci/controller"
cp "$PKG_DIR/luasrc/controller/openclaw.lua" "$DATA_DIR/usr/lib/lua/luci/controller/"

# Shared Lua helpers
mkdir -p "$DATA_DIR/usr/lib/lua/openclaw"
cp "$PKG_DIR/luasrc/openclaw/paths.lua" "$DATA_DIR/usr/lib/lua/openclaw/"

# LuCI CBI
mkdir -p "$DATA_DIR/usr/lib/lua/luci/model/cbi/openclaw"
cp "$PKG_DIR/luasrc/model/cbi/openclaw/"*.lua "$DATA_DIR/usr/lib/lua/luci/model/cbi/openclaw/"

# LuCI views
mkdir -p "$DATA_DIR/usr/lib/lua/luci/view/openclaw"
cp "$PKG_DIR/luasrc/view/openclaw/"*.htm "$DATA_DIR/usr/lib/lua/luci/view/openclaw/"

# oc-config assets
mkdir -p "$DATA_DIR/usr/share/openclaw"
cp "$PKG_DIR/VERSION" "$DATA_DIR/usr/share/openclaw/VERSION"
cp "$PKG_DIR/root/usr/share/openclaw/oc-config.sh" "$DATA_DIR/usr/share/openclaw/"
chmod +x "$DATA_DIR/usr/share/openclaw/oc-config.sh"
cp "$PKG_DIR/root/usr/share/openclaw/web-pty.js" "$DATA_DIR/usr/share/openclaw/"

# Web PTY UI
cp -r "$PKG_DIR/root/usr/share/openclaw/ui" "$DATA_DIR/usr/share/openclaw/"

# profile.d 环境变量脚本 (v1.0.16+)
mkdir -p "$DATA_DIR/etc/profile.d"
cp "$PKG_DIR/root/etc/profile.d/openclaw.sh" "$DATA_DIR/etc/profile.d/"
chmod +x "$DATA_DIR/etc/profile.d/openclaw.sh"

# i18n (po2lmo 可选)
mkdir -p "$DATA_DIR/usr/lib/lua/luci/i18n"
if command -v po2lmo >/dev/null 2>&1 && [ -f "$PKG_DIR/po/zh-cn/openclaw.po" ]; then
	po2lmo "$PKG_DIR/po/zh-cn/openclaw.po" "$DATA_DIR/usr/lib/lua/luci/i18n/openclaw.zh-cn.lmo" 2>/dev/null || true
fi

# 计算安装大小
INSTALLED_SIZE=$(du -sk "$DATA_DIR" | awk '{print $1}')

(cd "$DATA_DIR" && tar czf "$STAGING/data.tar.gz" .)

# ── 构建 control.tar.gz ──
CTRL_DIR="$STAGING/control"
mkdir -p "$CTRL_DIR"

cat > "$CTRL_DIR/control" << EOF
Package: ${PKG_NAME}
Version: ${PKG_VERSION}-${PKG_RELEASE}
Depends: luci-compat, luci-base, curl, openssl-util, script-utils, tar, libstdcpp
Source: https://github.com/10000ge10000/luci-app-openclaw
SourceName: ${PKG_NAME}
License: GPL-3.0
Section: luci
SourceDateEpoch: $(date +%s)
Maintainer: 10000ge10000 <10000ge10000@users.noreply.github.com>
Architecture: all
Installed-Size: ${INSTALLED_SIZE}
Description: OpenClaw AI 网关 LuCI 管理插件
EOF

cat > "$CTRL_DIR/postinst" << 'EOF'
#!/bin/sh
[ -n "${IPKG_INSTROOT}" ] || {
	# ══════════════════════════════════════════════════════════════
	# 配置文件冲突处理 (opkg 将新配置保存为 .opkg 后缀)
	# ══════════════════════════════════════════════════════════════
	# opkg 配置文件冲突处理流程:
	# 1. opkg 检测到 /etc/config/openclaw 已存在且内容不同
	# 2. opkg 保留旧配置，将新配置保存为 /etc/config/openclaw-opkg
	# 3. postinst 需要合并用户配置到新配置文件
	
	OLD_CONFIG="/etc/config/openclaw"
	NEW_CONFIG="/etc/config/openclaw-opkg"
	
	if [ -f "$NEW_CONFIG" ]; then
		echo "检测到配置文件冲突，正在智能合并..."
		
		# 步骤1: 从旧配置中提取用户设置 (在替换之前!)
		# 使用 sed 直接解析 UCI 格式，不依赖 uci 命令
		USER_ENABLED=$(sed -n "s/^\s*option\s\+enabled\s\+['\"]\\?\\([^'\"]*\\)['\"]\\?.*/\\1/p" "$OLD_CONFIG" 2>/dev/null | tail -1)
		USER_PORT=$(sed -n "s/^\s*option\s\+port\s\+['\"]\\?\\([^'\"]*\\)['\"]\\?.*/\\1/p" "$OLD_CONFIG" 2>/dev/null | tail -1)
		USER_BIND=$(sed -n "s/^\s*option\s\+bind\s\+['\"]\\?\\([^'\"]*\\)['\"]\\?.*/\\1/p" "$OLD_CONFIG" 2>/dev/null | tail -1)
		USER_TOKEN=$(sed -n "s/^\s*option\s\+token\s\+['\"]\\?\\([^'\"]*\\)['\"]\\?.*/\\1/p" "$OLD_CONFIG" 2>/dev/null | tail -1)
		USER_PTY_PORT=$(sed -n "s/^\s*option\s\+pty_port\s\+['\"]\\?\\([^'\"]*\\)['\"]\\?.*/\\1/p" "$OLD_CONFIG" 2>/dev/null | tail -1)
		
		# 步骤2: 备份旧配置 (带时间戳)
		BAK_FILE="/etc/config/openclaw.$(date +%Y%m%d%H%M%S).bak"
		cp "$OLD_CONFIG" "$BAK_FILE" 2>/dev/null || true
		echo "旧配置已备份到: $BAK_FILE"
		
		# 步骤3: 使用新配置文件
		mv "$NEW_CONFIG" "$OLD_CONFIG" 2>/dev/null || cp "$NEW_CONFIG" "$OLD_CONFIG" 2>/dev/null || true
		rm -f "$NEW_CONFIG" 2>/dev/null || true
		
		# 步骤4: 合并用户设置到新配置
		# 直接使用 sed 修改配置文件，兼容性更好
		[ -n "$USER_ENABLED" ] && sed -i "s/^\(\s*option\s\+enabled\s\+\).*/\\1'$USER_ENABLED'/" "$OLD_CONFIG" 2>/dev/null || true
		[ -n "$USER_PORT" ] && sed -i "s/^\(\s*option\s\+port\s\+\).*/\\1'$USER_PORT'/" "$OLD_CONFIG" 2>/dev/null || true
		[ -n "$USER_BIND" ] && sed -i "s/^\(\s*option\s\+bind\s\+\).*/\\1'$USER_BIND'/" "$OLD_CONFIG" 2>/dev/null || true
		[ -n "$USER_TOKEN" ] && sed -i "s/^\(\s*option\s\+token\s\+\).*/\\1'$USER_TOKEN'/" "$OLD_CONFIG" 2>/dev/null || true
		[ -n "$USER_PTY_PORT" ] && sed -i "s/^\(\s*option\s\+pty_port\s\+\).*/\\1'$USER_PTY_PORT'/" "$OLD_CONFIG" 2>/dev/null || true
		
		echo "配置合并完成，用户设置已保留"
	fi
	
	# 执行 uci-defaults 初始化脚本
	if [ -f /etc/uci-defaults/99-openclaw ]; then
		( . /etc/uci-defaults/99-openclaw ) && rm -f /etc/uci-defaults/99-openclaw
	fi
	
	# 清理 LuCI 缓存
	rm -f /tmp/luci-indexcache /tmp/luci-modulecache/* /tmp/luci-indexcache.*.json 2>/dev/null
	
	# 重启 Web PTY (使其加载新文件和新 token)
	PTY_PID=$(pgrep -f 'web-pty.js' 2>/dev/null | head -1)
	[ -n "$PTY_PID" ] && kill "$PTY_PID" 2>/dev/null || true
	
	exit 0
}
EOF
chmod +x "$CTRL_DIR/postinst"

cat > "$CTRL_DIR/prerm" << 'EOF'
#!/bin/sh
[ -n "${IPKG_INSTROOT}" ] || {
	# 升级前备份当前配置
	if [ -f /etc/config/openclaw ]; then
		cp /etc/config/openclaw /etc/config/openclaw.pre-upgrade.bak 2>/dev/null || true
	fi
}
EOF
chmod +x "$CTRL_DIR/prerm"

cat > "$CTRL_DIR/postrm" << 'EOF'
#!/bin/sh
[ -n "${IPKG_INSTROOT}" ] || {
	rm -f /tmp/luci-indexcache /tmp/luci-modulecache/* 2>/dev/null
	# 清理备份文件 (仅在完全卸载时)
	if [ "$1" = "0" ]; then
		rm -f /etc/config/openclaw.user.bak /etc/config/openclaw.pre-upgrade.bak 2>/dev/null
	fi
}
EOF
chmod +x "$CTRL_DIR/postrm"

cat > "$CTRL_DIR/conffiles" << 'EOF'
/etc/config/openclaw
EOF

(cd "$CTRL_DIR" && tar czf "$STAGING/control.tar.gz" .)

# ── 组装 .ipk (ar 格式) ──
mkdir -p "$OUT_DIR"
IPK_FILE="$OUT_DIR/${PKG_NAME}_${PKG_VERSION}-${PKG_RELEASE}_all.ipk"

echo "2.0" > "$STAGING/debian-binary"

# 清理旧文件
rm -f "$IPK_FILE"

# 组装 .ipk — OpenWrt opkg 使用 tar.gz 格式 (非 Debian 的 ar 格式)
(cd "$STAGING" && tar czf "$IPK_FILE" debian-binary control.tar.gz data.tar.gz)

IPK_SIZE=$(wc -c < "$IPK_FILE" | tr -d ' ')
echo ""
echo "=== 构建完成 ==="
echo "输出文件: $IPK_FILE"
echo "文件大小: ${IPK_SIZE} bytes"
echo "安装大小: ${INSTALLED_SIZE} KB"
echo ""
echo "安装方法: opkg install ${PKG_NAME}_${PKG_VERSION}-${PKG_RELEASE}_all.ipk"

# ── 同步构建 .run 包 ──
echo ""
echo "=== 同步构建 .run 包 ==="
"$SCRIPT_DIR/build_run.sh" "$OUT_DIR"