#!/bin/sh
# SPDX-License-Identifier: Apache-2.0
# SecuBox Local Package Store - RPCD Backend
# Manages installation/removal of packages from local feed

. /usr/share/libubox/jshn.sh

FEED_DIR="/www/secubox-feed"
APPS_JSON="$FEED_DIR/apps-local.json"

# List available packages from local feed
list_packages() {
    if [ -f "$APPS_JSON" ]; then
        # Read apps-local.json and add installation status
        local packages=$(cat "$APPS_JSON")

        json_init
        json_add_boolean "success" 1
        json_add_string "feed_url" "/secubox-feed"
        json_add_array "packages"

        # Parse apps-local.json and check each package
        local pkg_list=$(jsonfilter -s "$packages" -e '@.packages[*].name' 2>/dev/null)

        for name in $pkg_list; do
            local pkg_data=$(jsonfilter -s "$packages" -e "@.packages[@.name='$name']" 2>/dev/null)
            local version=$(echo "$pkg_data" | jsonfilter -e '@.version' 2>/dev/null)
            local filename=$(echo "$pkg_data" | jsonfilter -e '@.filename' 2>/dev/null)
            local size=$(echo "$pkg_data" | jsonfilter -e '@.size' 2>/dev/null)
            local category=$(echo "$pkg_data" | jsonfilter -e '@.category' 2>/dev/null)
            local icon=$(echo "$pkg_data" | jsonfilter -e '@.icon' 2>/dev/null)
            local description=$(echo "$pkg_data" | jsonfilter -e '@.description' 2>/dev/null)

            # Check if installed
            local installed=0
            if opkg list-installed 2>/dev/null | grep -q "^${name} "; then
                installed=1
            fi

            json_add_object ""
            json_add_string "name" "$name"
            json_add_string "version" "$version"
            json_add_string "filename" "$filename"
            json_add_int "size" "${size:-0}"
            json_add_string "category" "$category"
            json_add_string "icon" "$icon"
            json_add_string "description" "$description"
            json_add_boolean "installed" "$installed"
            json_close_object
        done

        json_close_array
        json_dump
    else
        json_init
        json_add_boolean "success" 0
        json_add_string "error" "Local feed not found"
        json_add_array "packages"
        json_close_array
        json_dump
    fi
}

# Install a package from local feed
install_package() {
    local pkg_name="$1"

    if [ -z "$pkg_name" ]; then
        json_init
        json_add_boolean "success" 0
        json_add_string "error" "Package name required"
        json_dump
        return
    fi

    # Find the package file
    local pkg_file=$(ls "$FEED_DIR/${pkg_name}_"*.ipk 2>/dev/null | head -1)

    if [ -z "$pkg_file" ] || [ ! -f "$pkg_file" ]; then
        json_init
        json_add_boolean "success" 0
        json_add_string "error" "Package file not found: $pkg_name"
        json_dump
        return
    fi

    # Update opkg lists first
    opkg update 2>/dev/null || true

    # Install the package
    local output
    output=$(opkg install "$pkg_file" 2>&1)
    local result=$?

    json_init
    if [ $result -eq 0 ]; then
        json_add_boolean "success" 1
        json_add_string "message" "Package installed successfully"
        json_add_string "package" "$pkg_name"

        # Clear LuCI cache
        rm -rf /tmp/luci-modulecache /tmp/luci-indexcache 2>/dev/null
    else
        json_add_boolean "success" 0
        json_add_string "error" "$output"
    fi
    json_add_string "output" "$output"
    json_dump
}

# Remove a package
remove_package() {
    local pkg_name="$1"

    if [ -z "$pkg_name" ]; then
        json_init
        json_add_boolean "success" 0
        json_add_string "error" "Package name required"
        json_dump
        return
    fi

    # Check if installed
    if ! opkg list-installed 2>/dev/null | grep -q "^${pkg_name} "; then
        json_init
        json_add_boolean "success" 0
        json_add_string "error" "Package not installed: $pkg_name"
        json_dump
        return
    fi

    # Remove the package
    local output
    output=$(opkg remove "$pkg_name" 2>&1)
    local result=$?

    json_init
    if [ $result -eq 0 ]; then
        json_add_boolean "success" 1
        json_add_string "message" "Package removed successfully"
        json_add_string "package" "$pkg_name"

        # Clear LuCI cache
        rm -rf /tmp/luci-modulecache /tmp/luci-indexcache 2>/dev/null
    else
        json_add_boolean "success" 0
        json_add_string "error" "$output"
    fi
    json_add_string "output" "$output"
    json_dump
}

# Get package info
get_package_info() {
    local pkg_name="$1"

    if [ -z "$pkg_name" ]; then
        json_init
        json_add_boolean "success" 0
        json_add_string "error" "Package name required"
        json_dump
        return
    fi

    json_init
    json_add_boolean "success" 1
    json_add_string "name" "$pkg_name"

    # Check if installed
    local installed_info=$(opkg list-installed "$pkg_name" 2>/dev/null)
    if [ -n "$installed_info" ]; then
        json_add_boolean "installed" 1
        json_add_string "installed_version" "$(echo "$installed_info" | cut -d' ' -f3)"
    else
        json_add_boolean "installed" 0
    fi

    # Get info from feed
    if [ -f "$APPS_JSON" ]; then
        local pkg_data=$(cat "$APPS_JSON" | jsonfilter -e "@.packages[@.name='$pkg_name']" 2>/dev/null)
        if [ -n "$pkg_data" ]; then
            json_add_string "feed_version" "$(echo "$pkg_data" | jsonfilter -e '@.version' 2>/dev/null)"
            json_add_string "description" "$(echo "$pkg_data" | jsonfilter -e '@.description' 2>/dev/null)"
            json_add_string "category" "$(echo "$pkg_data" | jsonfilter -e '@.category' 2>/dev/null)"
            json_add_int "size" "$(echo "$pkg_data" | jsonfilter -e '@.size' 2>/dev/null)"
        fi
    fi

    json_dump
}

# Get feed status
get_feed_status() {
    json_init

    if [ -d "$FEED_DIR" ]; then
        json_add_boolean "feed_exists" 1
        json_add_string "feed_path" "$FEED_DIR"

        local pkg_count=$(ls -1 "$FEED_DIR"/*.ipk 2>/dev/null | wc -l)
        json_add_int "package_count" "$pkg_count"

        if [ -f "$APPS_JSON" ]; then
            json_add_boolean "index_exists" 1
            local generated=$(jsonfilter -i "$APPS_JSON" -e '@.generated' 2>/dev/null)
            json_add_string "generated" "$generated"
        else
            json_add_boolean "index_exists" 0
        fi

        # Check if feed is in opkg config
        if grep -q "secubox-feed" /etc/opkg/customfeeds.conf 2>/dev/null; then
            json_add_boolean "feed_configured" 1
        else
            json_add_boolean "feed_configured" 0
        fi
    else
        json_add_boolean "feed_exists" 0
    fi

    json_dump
}

# Main dispatcher
case "$1" in
    list)
        json_init
        json_add_object "list_packages"
        json_close_object
        json_add_object "install_package"
            json_add_string "package" "str"
        json_close_object
        json_add_object "remove_package"
            json_add_string "package" "str"
        json_close_object
        json_add_object "get_package_info"
            json_add_string "package" "str"
        json_close_object
        json_add_object "get_feed_status"
        json_close_object
        json_dump
        ;;
    call)
        case "$2" in
            list_packages)
                list_packages
                ;;
            install_package)
                read -r input
                pkg=$(echo "$input" | jsonfilter -e '@.package')
                install_package "$pkg"
                ;;
            remove_package)
                read -r input
                pkg=$(echo "$input" | jsonfilter -e '@.package')
                remove_package "$pkg"
                ;;
            get_package_info)
                read -r input
                pkg=$(echo "$input" | jsonfilter -e '@.package')
                get_package_info "$pkg"
                ;;
            get_feed_status)
                get_feed_status
                ;;
            *)
                echo '{"error":"Unknown method"}'
                ;;
        esac
        ;;
    *)
        echo '{"error":"Invalid action"}'
        ;;
esac