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rules.go
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rules.go
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package zero
import (
"hash/crc64"
"regexp"
"strconv"
"strings"
"time"
"github.com/wdvxdr1123/ZeroBot/message"
"github.com/wdvxdr1123/ZeroBot/utils/helper"
)
// Type check the ctx.Event's type
func Type(type_ string) Rule {
t := strings.SplitN(type_, "/", 3)
return func(ctx *Ctx) bool {
if len(t) > 0 && t[0] != ctx.Event.PostType {
return false
}
if len(t) > 1 && t[1] != ctx.Event.DetailType {
return false
}
if len(t) > 2 && t[2] != ctx.Event.SubType {
return false
}
return true
}
}
// PrefixRule check if the message has the prefix and trim the prefix
//
// 检查消息前缀
func PrefixRule(prefixes ...string) Rule {
return func(ctx *Ctx) bool {
if len(ctx.Event.Message) == 0 || ctx.Event.Message[0].Type != "text" { // 确保无空指针
return false
}
first := ctx.Event.Message[0]
firstMessage := first.Data["text"]
for _, prefix := range prefixes {
if strings.HasPrefix(firstMessage, prefix) {
ctx.State["prefix"] = prefix
arg := strings.TrimLeft(firstMessage[len(prefix):], " ")
if len(ctx.Event.Message) > 1 {
arg += ctx.Event.Message[1:].ExtractPlainText()
}
ctx.State["args"] = arg
return true
}
}
return false
}
}
// SuffixRule check if the message has the suffix and trim the suffix
//
// 检查消息后缀
func SuffixRule(suffixes ...string) Rule {
return func(ctx *Ctx) bool {
mLen := len(ctx.Event.Message)
if mLen <= 0 { // 确保无空指针
return false
}
last := ctx.Event.Message[mLen-1]
if last.Type != "text" {
return false
}
lastMessage := last.Data["text"]
for _, suffix := range suffixes {
if strings.HasSuffix(lastMessage, suffix) {
ctx.State["suffix"] = suffix
arg := strings.TrimRight(lastMessage[:len(lastMessage)-len(suffix)], " ")
if mLen >= 2 {
arg += ctx.Event.Message[:mLen].ExtractPlainText()
}
ctx.State["args"] = arg
return true
}
}
return false
}
}
// CommandRule check if the message is a command and trim the command name
func CommandRule(commands ...string) Rule {
return func(ctx *Ctx) bool {
if len(ctx.Event.Message) == 0 || ctx.Event.Message[0].Type != "text" {
return false
}
first := ctx.Event.Message[0]
firstMessage := first.Data["text"]
if !strings.HasPrefix(firstMessage, BotConfig.CommandPrefix) {
return false
}
cmdMessage := firstMessage[len(BotConfig.CommandPrefix):]
for _, command := range commands {
if strings.HasPrefix(cmdMessage, command) {
ctx.State["command"] = command
arg := strings.TrimLeft(cmdMessage[len(command):], " ")
if len(ctx.Event.Message) > 1 {
arg += ctx.Event.Message[1:].ExtractPlainText()
}
ctx.State["args"] = arg
return true
}
}
return false
}
}
// RegexRule check if the message can be matched by the regex pattern
func RegexRule(regexPattern string) Rule {
regex := regexp.MustCompile(regexPattern)
return func(ctx *Ctx) bool {
msg := ctx.MessageString()
if matched := regex.FindStringSubmatch(msg); matched != nil {
ctx.State["regex_matched"] = matched
return true
}
return false
}
}
// ReplyRule check if the message is replying some message
func ReplyRule(messageID int64) Rule {
return func(ctx *Ctx) bool {
if len(ctx.Event.Message) == 0 {
return false
}
if ctx.Event.Message[0].Type != "reply" {
return false
}
if id, err := strconv.ParseInt(ctx.Event.Message[0].Data["id"], 10, 64); err == nil {
return id == messageID
}
c := crc64.New(crc64.MakeTable(crc64.ISO))
c.Write(helper.StringToBytes(ctx.Event.Message[0].Data["id"]))
return int64(c.Sum64()) == messageID
}
}
// KeywordRule check if the message has a keyword or keywords
func KeywordRule(src ...string) Rule {
return func(ctx *Ctx) bool {
msg := ctx.MessageString()
for _, str := range src {
if strings.Contains(msg, str) {
ctx.State["keyword"] = str
return true
}
}
return false
}
}
// FullMatchRule check if src has the same copy of the message
func FullMatchRule(src ...string) Rule {
return func(ctx *Ctx) bool {
msg := ctx.MessageString()
for _, str := range src {
if str == msg {
ctx.State["matched"] = msg
return true
}
}
return false
}
}
// OnlyToMe only triggered in conditions of @bot or begin with the nicknames
func OnlyToMe(ctx *Ctx) bool {
return ctx.Event.IsToMe
}
// CheckUser only triggered by specific person
func CheckUser(userId ...int64) Rule {
return func(ctx *Ctx) bool {
for _, uid := range userId {
if ctx.Event.UserID == uid {
return true
}
}
return false
}
}
// CheckGroup only triggered in specific group
func CheckGroup(grpId ...int64) Rule {
return func(ctx *Ctx) bool {
for _, gid := range grpId {
if ctx.Event.GroupID == gid {
return true
}
}
return false
}
}
// OnlyPrivate requires that the ctx.Event is private message
func OnlyPrivate(ctx *Ctx) bool {
return ctx.Event.PostType == "message" && ctx.Event.DetailType == "private"
}
// OnlyPublic requires that the ctx.Event is public/group or public/guild message
func OnlyPublic(ctx *Ctx) bool {
return ctx.Event.PostType == "message" && (ctx.Event.DetailType == "group" || ctx.Event.DetailType == "guild")
}
// OnlyGroup requires that the ctx.Event is public/group message
func OnlyGroup(ctx *Ctx) bool {
return ctx.Event.PostType == "message" && ctx.Event.DetailType == "group"
}
// OnlyGuild requires that the ctx.Event is public/guild message
func OnlyGuild(ctx *Ctx) bool {
return ctx.Event.PostType == "message" && ctx.Event.DetailType == "guild"
}
func issu(id int64) bool {
for _, su := range BotConfig.SuperUsers {
if su == id {
return true
}
}
return false
}
// SuperUserPermission only triggered by the bot's owner
func SuperUserPermission(ctx *Ctx) bool {
return issu(ctx.Event.UserID)
}
// AdminPermission only triggered by the group admins or higher permission
func AdminPermission(ctx *Ctx) bool {
return SuperUserPermission(ctx) || ctx.Event.Sender.Role == "owner" || ctx.Event.Sender.Role == "admin"
}
// OwnerPermission only triggered by the group owner or higher permission
func OwnerPermission(ctx *Ctx) bool {
return SuperUserPermission(ctx) || ctx.Event.Sender.Role == "owner"
}
// UserOrGrpAdmin 允许用户单独使用或群管使用
func UserOrGrpAdmin(ctx *Ctx) bool {
if OnlyGroup(ctx) {
return AdminPermission(ctx)
}
return OnlyToMe(ctx)
}
// GroupHigherPermission 群发送者权限高于 target
//
// 隐含 OnlyGroup 判断
func GroupHigherPermission(gettarget func(ctx *Ctx) int64) Rule {
return func(ctx *Ctx) bool {
if !OnlyGroup(ctx) {
return false
}
target := gettarget(ctx)
if target == ctx.Event.UserID { // 特判, 自己和自己比
return false
}
if SuperUserPermission(ctx) {
sender := ctx.Event.UserID
return BotConfig.GetFirstSuperUser(sender, target) == sender
}
if ctx.Event.Sender.Role == "owner" {
return !issu(target) && ctx.GetThisGroupMemberInfo(target, false).Get("role").Str != "owner"
}
if ctx.Event.Sender.Role == "admin" {
tgtrole := ctx.GetThisGroupMemberInfo(target, false).Get("role").Str
return !issu(target) && tgtrole != "owner" && tgtrole != "admin"
}
return false // member is the lowest
}
}
// HasPicture 消息含有图片返回 true
func HasPicture(ctx *Ctx) bool {
var urls = []string{}
for _, elem := range ctx.Event.Message {
if elem.Type == "image" {
if elem.Data["url"] != "" {
urls = append(urls, elem.Data["url"])
}
}
}
if len(urls) > 0 {
ctx.State["image_url"] = urls
return true
}
return false
}
// MustProvidePicture 消息不存在图片阻塞120秒至有图片,超时返回 false
func MustProvidePicture(ctx *Ctx) bool {
if HasPicture(ctx) {
return true
}
// 没有图片就索取
ctx.SendChain(message.Text("请发送一张图片"))
next := NewFutureEvent("message", 999, true, ctx.CheckSession(), HasPicture).Next()
select {
case <-time.After(time.Second * 120):
return false
case newCtx := <-next:
ctx.State["image_url"] = newCtx.State["image_url"]
ctx.Event.MessageID = newCtx.Event.MessageID
return true
}
}