#!/bin/sh
# ubus RPC module for Quick Actions Failover
. /usr/share/libubox/jshn.sh

list_methods() {
    cat <<'EOF'
{
  "status": {},
  "interfaces": {},
  "action": { "action": "string" }
}
EOF
}

method_status() {
    cat >/dev/null
    local en lock
    en=$(uci -q get quickactions.failover.enabled); [ -z "$en" ] && en=1
    [ -f /tmp/quickactions_wan_down.lock ] && lock=1 || lock=0
    json_init
    json_add_int "enabled" "$en"
    json_add_int "on_backup" "$lock"
    json_add_string "primary" "$(uci -q get quickactions.failover.primary)"
    json_add_string "backups" "$(uci -q get quickactions.failover.backups)"
    json_add_string "check_ips" "$(uci -q get quickactions.failover.check_ips)"
    json_add_string "interval" "$(uci -q get quickactions.failover.check_interval)"
    json_add_string "last_log" "$(logread 2>/dev/null | grep -E 'quickactions-(failover|hotplug)' | tail -1)"
    json_dump
}

method_interfaces() {
    cat >/dev/null
    local list
    list=$(
        {
            uci show network 2>/dev/null | grep '=interface$' | cut -d. -f2 | cut -d= -f1
            ls -1 /sys/class/net/ 2>/dev/null | grep -E '^(pppoe-|eth|usb)'
        } | sort -u | tr '\n' ' '
    )
    json_init
    json_add_string "interfaces" "$list"
    json_dump
}

method_action() {
    local payload action out
    payload=$(cat)
    json_load "$payload"
    json_get_var action "action"

    case "$action" in
        on|off|status|test)
            out=$(/usr/bin/quickactions-failover "$action" 2>&1)
            ;;
        *)
            out="unknown action: [$action]"
            ;;
    esac

    json_init
    json_add_string "output" "$out"
    json_dump
}

call_method() {
    local method="$1"
    case "$method" in
        action)     method_action ;;
        status)     method_status ;;
        interfaces) method_interfaces ;;
        *)          cat >/dev/null
                    json_init
                    json_add_string "error" "unknown_method"
                    json_dump ;;
    esac
}

case "$1" in
    list) list_methods ;;
    call) call_method "$2" ;;
    *) echo '{"error":"usage: '$0' {list|call <method>}"}' ;;
esac