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util.go
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util.go
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package commands
import (
"fmt"
"strconv"
"strings"
"time"
"unicode"
"unicode/utf8"
"github.com/jonas747/dcmd"
"github.com/jonas747/discordgo"
"github.com/jonas747/yagpdb/bot"
"github.com/jonas747/yagpdb/common"
"github.com/pkg/errors"
)
type DurationArg struct {
Min, Max time.Duration
}
func (d *DurationArg) Matches(def *dcmd.ArgDef, part string) bool {
if len(part) < 1 {
return false
}
// We "need" the first character to be a number
r, _ := utf8.DecodeRuneInString(part)
if !unicode.IsNumber(r) {
return false
}
_, err := ParseDuration(part)
return err == nil
}
func (d *DurationArg) Parse(def *dcmd.ArgDef, part string, data *dcmd.Data) (interface{}, error) {
dur, err := ParseDuration(part)
if err != nil {
return nil, err
}
if d.Min != 0 && d.Min > dur {
return nil, &DurationOutOfRangeError{ArgName: def.Name, Got: dur, Max: d.Max, Min: d.Min}
}
if d.Max != 0 && d.Max < dur {
return nil, &DurationOutOfRangeError{ArgName: def.Name, Got: dur, Max: d.Max, Min: d.Min}
}
return dur, nil
}
func (d *DurationArg) HelpName() string {
return "Duration"
}
// Parses a time string like 1day3h
func ParseDuration(str string) (time.Duration, error) {
var dur time.Duration
currentNumBuf := ""
currentModifierBuf := ""
// Parse the time
for _, v := range str {
// Ignore whitespace
if unicode.Is(unicode.White_Space, v) {
continue
}
if unicode.IsNumber(v) {
// If we reached a number and the modifier was also set, parse the last duration component before starting a new one
if currentModifierBuf != "" {
if currentNumBuf == "" {
currentNumBuf = "1"
}
d, err := parseDurationComponent(currentNumBuf, currentModifierBuf)
if err != nil {
return d, err
}
dur += d
currentNumBuf = ""
currentModifierBuf = ""
}
currentNumBuf += string(v)
} else {
currentModifierBuf += string(v)
}
}
if currentNumBuf != "" {
d, err := parseDurationComponent(currentNumBuf, currentModifierBuf)
if err != nil {
return dur, errors.Wrap(err, "not a duration")
}
dur += d
}
return dur, nil
}
func parseDurationComponent(numStr, modifierStr string) (time.Duration, error) {
parsedNum, err := strconv.ParseInt(numStr, 10, 64)
if err != nil {
return 0, err
}
parsedDur := time.Duration(parsedNum)
if strings.HasPrefix(modifierStr, "s") {
parsedDur = parsedDur * time.Second
} else if modifierStr == "" || (strings.HasPrefix(modifierStr, "m") && (len(modifierStr) < 2 || modifierStr[1] != 'o')) {
parsedDur = parsedDur * time.Minute
} else if strings.HasPrefix(modifierStr, "h") {
parsedDur = parsedDur * time.Hour
} else if strings.HasPrefix(modifierStr, "d") {
parsedDur = parsedDur * time.Hour * 24
} else if strings.HasPrefix(modifierStr, "w") {
parsedDur = parsedDur * time.Hour * 24 * 7
} else if strings.HasPrefix(modifierStr, "mo") {
parsedDur = parsedDur * time.Hour * 24 * 30
} else if strings.HasPrefix(modifierStr, "y") {
parsedDur = parsedDur * time.Hour * 24 * 365
} else {
return parsedDur, errors.New("couldn't figure out what '" + numStr + modifierStr + "` was")
}
return parsedDur, nil
}
type DurationOutOfRangeError struct {
Min, Max time.Duration
Got time.Duration
ArgName string
}
func (o *DurationOutOfRangeError) Error() string {
preStr := "too big"
if o.Got < o.Min {
preStr = "too small"
}
if o.Min == 0 {
return fmt.Sprintf("%s is %s, has to be smaller than %s", o.ArgName, preStr, common.HumanizeDuration(common.DurationPrecisionMinutes, o.Max))
} else if o.Max == 0 {
return fmt.Sprintf("%s is %s, has to be bigger than %s", o.ArgName, preStr, common.HumanizeDuration(common.DurationPrecisionMinutes, o.Min))
} else {
format := "%s is %s (has to be within `%d` and `%d`)"
return fmt.Sprintf(format, o.ArgName, preStr, common.HumanizeDuration(common.DurationPrecisionMinutes, o.Min), common.HumanizeDuration(common.DurationPrecisionMinutes, o.Max))
}
}
type PublicError string
func (p PublicError) Error() string {
return string(p)
}
func NewPublicError(a ...interface{}) PublicError {
return PublicError(fmt.Sprint(a...))
}
func NewPublicErrorF(f string, a ...interface{}) PublicError {
return PublicError(fmt.Sprintf(f, a...))
}
func FilterBadInvites(msg string, guildID int64, replacement string) string {
return common.ReplaceServerInvites(msg, guildID, replacement)
}
// CommonContainerNotFoundHandler is a common "NotFound" handler that should be used with dcmd containers
// it ensures that no messages is sent if none of the commands in te container is enabeld
// if "fixedMessage" is empty, then it shows default generated container help
func CommonContainerNotFoundHandler(container *dcmd.Container, fixedMessage string) func(data *dcmd.Data) (interface{}, error) {
return func(data *dcmd.Data) (interface{}, error) {
// Only show stuff if atleast 1 of the commands in the container is enabled
if data.GS != nil {
data.GS.RLock()
cParentID := data.CS.ParentID
data.GS.RUnlock()
ms, err := bot.GetMember(data.GS.ID, data.Msg.Author.ID)
if err != nil {
return nil, nil
}
channelOverrides, err := GetOverridesForChannel(data.CS.ID, cParentID, data.GS.ID)
if err != nil {
logger.WithError(err).WithField("guild", data.Msg.GuildID).Error("failed retrieving command overrides")
return nil, nil
}
chain := []*dcmd.Container{CommandSystem.Root, container}
enabled := false
// make sure that atleast 1 command in the container is enabled
for _, v := range container.Commands {
cast := v.Command.(*YAGCommand)
settings, err := cast.GetSettingsWithLoadedOverrides(chain, data.GS.ID, channelOverrides)
if err != nil {
logger.WithError(err).WithField("guild", data.Msg.GuildID).Error("failed checking if command was enabled")
continue
}
if len(settings.RequiredRoles) > 0 && !common.ContainsInt64SliceOneOf(settings.RequiredRoles, ms.Roles) {
// missing required role
continue
}
if len(settings.IgnoreRoles) > 0 && common.ContainsInt64SliceOneOf(settings.IgnoreRoles, ms.Roles) {
// has ignored role
continue
}
if settings.Enabled {
enabled = true
break
}
}
// no commands enabled, do nothing
if !enabled {
return nil, nil
}
}
if fixedMessage != "" {
return fixedMessage, nil
}
resp := dcmd.GenerateHelp(data, container, &dcmd.StdHelpFormatter{})
if len(resp) > 0 {
return resp[0], nil
}
return nil, nil
}
}
// MemberArg matches a id or mention and returns a MemberState object for the user
type MemberArg struct{}
func (ma *MemberArg) Matches(def *dcmd.ArgDef, part string) bool {
// Check for mention
if strings.HasPrefix(part, "<@") && strings.HasSuffix(part, ">") {
return true
}
// Check for ID
_, err := strconv.ParseInt(part, 10, 64)
if err == nil {
return true
}
return false
}
func (ma *MemberArg) Parse(def *dcmd.ArgDef, part string, data *dcmd.Data) (interface{}, error) {
id := ma.ExtractID(part, data)
if id < 1 {
return nil, dcmd.NewSimpleUserError("Invalid mention or id")
}
member, err := bot.GetMember(data.GS.ID, id)
if err != nil {
if common.IsDiscordErr(err, discordgo.ErrCodeUnknownMember, discordgo.ErrCodeUnknownUser) {
return nil, dcmd.NewSimpleUserError("User not a member of the server")
}
return nil, err
}
return member, nil
}
func (ma *MemberArg) ExtractID(part string, data *dcmd.Data) int64 {
if strings.HasPrefix(part, "<@") && len(part) > 3 {
// Direct mention
id := part[2 : len(part)-1]
if id[0] == '!' {
// Nickname mention
id = id[1:]
}
parsed, err := strconv.ParseInt(id, 10, 64)
if err != nil {
return -1
}
return parsed
}
id, err := strconv.ParseInt(part, 10, 64)
if err == nil {
return id
}
return -1
}
func (ma *MemberArg) HelpName() string {
return "Member"
}