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import { Guild } from '../structures/guild.ts'
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import {
Interaction ,
InteractionApplicationCommandResolved
} from '../structures/slash.ts'
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import {
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InteractionPayload ,
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InteractionResponsePayload ,
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InteractionType ,
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SlashCommandChoice ,
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SlashCommandOption ,
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SlashCommandOptionType ,
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SlashCommandPartial ,
SlashCommandPayload
} from '../types/slash.ts'
import { Collection } from '../utils/collection.ts'
import { Client } from './client.ts'
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import { RESTManager } from './rest.ts'
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import { SlashModule } from './slashModule.ts'
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import { verify as edverify } from 'https://deno.land/x/ed25519@1.0.1/mod.ts'
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import { User } from '../structures/user.ts'
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export class SlashCommand {
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slash : SlashCommandsManager
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id : string
applicationID : string
name : string
description : string
options : SlashCommandOption [ ]
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guild? : Guild
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_guild? : string
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constructor (
manager : SlashCommandsManager ,
data : SlashCommandPayload ,
guild? : Guild
) {
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this . slash = manager
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this . id = data . id
this . applicationID = data . application_id
this . name = data . name
this . description = data . description
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this . options = data . options ? ? [ ]
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this . guild = guild
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}
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async delete ( ) : Promise < void > {
await this . slash . delete ( this . id , this . _guild )
}
async edit ( data : SlashCommandPartial ) : Promise < void > {
await this . slash . edit ( this . id , data , this . _guild )
}
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/** Create a handler for this Slash Command */
handle (
func : SlashCommandHandlerCallback ,
options ? : { parent? : string ; group? : string }
) : SlashCommand {
this . slash . slash . handle ( {
name : this.name ,
parent : options?.parent ,
group : options?.group ,
guild : this._guild ,
handler : func
} )
return this
}
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}
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export interface CreateOptions {
name : string
description? : string
options? : Array < SlashCommandOption | SlashOptionCallable >
choices? : Array < SlashCommandChoice | string >
}
function createSlashOption (
type : SlashCommandOptionType ,
data : CreateOptions
) : SlashCommandOption {
return {
name : data.name ,
type ,
description :
type === 0 || type === 1
? undefined
: data . description ? ? 'No description.' ,
options : data.options?.map ( ( e ) = >
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typeof e === 'function' ? e ( SlashOption ) : e
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) ,
choices :
data . choices === undefined
? undefined
: data . choices . map ( ( e ) = >
typeof e === 'string' ? { name : e , value : e } : e
)
}
}
// eslint-disable-next-line @typescript-eslint/no-extraneous-class
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export class SlashOption {
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static string ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . STRING , data )
}
static bool ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . BOOLEAN , data )
}
static subCommand ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . SUB_COMMAND , data )
}
static subCommandGroup ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . SUB_COMMAND_GROUP , data )
}
static role ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . ROLE , data )
}
static channel ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . CHANNEL , data )
}
static user ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . USER , data )
}
static number ( data : CreateOptions ) : SlashCommandOption {
return createSlashOption ( SlashCommandOptionType . INTEGER , data )
}
}
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export type SlashOptionCallable = ( o : typeof SlashOption ) = > SlashCommandOption
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export type SlashBuilderOptionsData =
| Array < SlashCommandOption | SlashOptionCallable >
| {
[ name : string ] :
| {
description : string
type : SlashCommandOptionType
options? : SlashCommandOption [ ]
choices? : SlashCommandChoice [ ]
}
| SlashOptionCallable
}
function buildOptionsArray (
options : SlashBuilderOptionsData
) : SlashCommandOption [ ] {
return Array . isArray ( options )
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? options . map ( ( op ) = > ( typeof op === 'function' ? op ( SlashOption ) : op ) )
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: Object . entries ( options ) . map ( ( entry ) = >
typeof entry [ 1 ] === 'function'
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? entry [ 1 ] ( SlashOption )
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: Object . assign ( entry [ 1 ] , { name : entry [ 0 ] } )
)
}
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/** Slash Command Builder */
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export class SlashBuilder {
data : SlashCommandPartial
constructor (
name? : string ,
description? : string ,
options? : SlashBuilderOptionsData
) {
this . data = {
name : name ? ? '' ,
description : description ? ? 'No description.' ,
options : options === undefined ? [ ] : buildOptionsArray ( options )
}
}
name ( name : string ) : SlashBuilder {
this . data . name = name
return this
}
description ( desc : string ) : SlashBuilder {
this . data . description = desc
return this
}
option ( option : SlashOptionCallable | SlashCommandOption ) : SlashBuilder {
if ( this . data . options === undefined ) this . data . options = [ ]
this . data . options . push (
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typeof option === 'function' ? option ( SlashOption ) : option
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)
return this
}
options ( options : SlashBuilderOptionsData ) : SlashBuilder {
this . data . options = buildOptionsArray ( options )
return this
}
export ( ) : SlashCommandPartial {
if ( this . data . name === '' )
throw new Error ( 'Name was not provided in Slash Builder' )
return this . data
}
}
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/** Manages Slash Commands, allows fetching/modifying/deleting/creating Slash Commands. */
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export class SlashCommandsManager {
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slash : SlashClient
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rest : RESTManager
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constructor ( client : SlashClient ) {
this . slash = client
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this . rest = client . rest
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}
/** Get all Global Slash Commands */
async all ( ) : Promise < Collection < string , SlashCommand > > {
const col = new Collection < string , SlashCommand > ( )
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const res = ( await this . rest . api . applications [
this . slash . getID ( )
] . commands . get ( ) ) as SlashCommandPayload [ ]
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if ( ! Array . isArray ( res ) ) return col
for ( const raw of res ) {
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const cmd = new SlashCommand ( this , raw )
col . set ( raw . id , cmd )
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}
return col
}
/** Get a Guild's Slash Commands */
async guild (
guild : Guild | string
) : Promise < Collection < string , SlashCommand > > {
const col = new Collection < string , SlashCommand > ( )
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const res = ( await this . rest . api . applications [ this . slash . getID ( ) ] . guilds [
typeof guild === 'string' ? guild : guild.id
] . commands . get ( ) ) as SlashCommandPayload [ ]
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if ( ! Array . isArray ( res ) ) return col
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const _guild =
typeof guild === 'object'
? guild
: await this . slash . client ? . guilds . get ( guild )
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for ( const raw of res ) {
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const cmd = new SlashCommand ( this , raw , _guild )
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cmd . _guild = typeof guild === 'string' ? guild : guild.id
col . set ( raw . id , cmd )
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}
return col
}
/** Create a Slash Command (global or Guild) */
async create (
data : SlashCommandPartial ,
guild? : Guild | string
) : Promise < SlashCommand > {
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const route =
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guild === undefined
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? this . rest . api . applications [ this . slash . getID ( ) ] . commands
: this . rest . api . applications [ this . slash . getID ( ) ] . guilds [
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typeof guild === 'string' ? guild : guild.id
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] . commands
const payload = await route . post ( data )
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const _guild =
typeof guild === 'object'
? guild
: guild === undefined
? undefined
: await this . slash . client ? . guilds . get ( guild )
const cmd = new SlashCommand ( this , payload , _guild )
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cmd . _guild =
typeof guild === 'string' || guild === undefined ? guild : guild.id
return cmd
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}
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/** Edit a Slash Command (global or Guild) */
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async edit (
id : string ,
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data : SlashCommandPartial ,
guild? : Guild | string
) : Promise < SlashCommandsManager > {
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const route =
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guild === undefined
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? this . rest . api . applications [ this . slash . getID ( ) ] . commands [ id ]
: this . rest . api . applications [ this . slash . getID ( ) ] . guilds [
typeof guild === 'string' ? guild : guild.id
] . commands [ id ]
await route . patch ( data )
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return this
}
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/** Delete a Slash Command (global or Guild) */
async delete (
id : string ,
guild? : Guild | string
) : Promise < SlashCommandsManager > {
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const route =
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guild === undefined
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? this . rest . api . applications [ this . slash . getID ( ) ] . commands [ id ]
: this . rest . api . applications [ this . slash . getID ( ) ] . guilds [
typeof guild === 'string' ? guild : guild.id
] . commands [ id ]
await route . delete ( )
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return this
}
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/** Get a Slash Command (global or Guild) */
async get ( id : string , guild? : Guild | string ) : Promise < SlashCommand > {
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const route =
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guild === undefined
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? this . rest . api . applications [ this . slash . getID ( ) ] . commands [ id ]
: this . rest . api . applications [ this . slash . getID ( ) ] . guilds [
typeof guild === 'string' ? guild : guild.id
] . commands [ id ]
const data = await route . get ( )
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const _guild =
typeof guild === 'object'
? guild
: guild === undefined
? undefined
: await this . slash . client ? . guilds . get ( guild )
return new SlashCommand ( this , data , _guild )
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}
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/** Bulk Edit Global or Guild Slash Commands */
async bulkEdit (
cmds : Array < SlashCommandPartial | SlashCommandPayload > ,
guild? : Guild | string
) : Promise < SlashCommandsManager > {
const route =
guild === undefined
? this . rest . api . applications [ this . slash . getID ( ) ] . commands
: this . rest . api . applications [ this . slash . getID ( ) ] . guilds [
typeof guild === 'string' ? guild : guild.id
] . commands
await route . put ( cmds )
return this
}
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}
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export type SlashCommandHandlerCallback = ( interaction : Interaction ) = > unknown
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export interface SlashCommandHandler {
name : string
guild? : string
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parent? : string
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group? : string
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handler : SlashCommandHandlerCallback
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}
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/** Options for SlashClient */
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export interface SlashOptions {
id? : string | ( ( ) = > string )
client? : Client
enabled? : boolean
token? : string
rest? : RESTManager
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publicKey? : string
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}
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const encoder = new TextEncoder ( )
const decoder = new TextDecoder ( 'utf-8' )
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/** Slash Client represents an Interactions Client which can be used without Harmony Client. */
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export class SlashClient {
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id : string | ( ( ) = > string )
client? : Client
token? : string
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enabled : boolean = true
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commands : SlashCommandsManager
handlers : SlashCommandHandler [ ] = [ ]
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rest : RESTManager
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modules : SlashModule [ ] = [ ]
publicKey? : string
_decoratedSlash? : Array < {
name : string
guild? : string
parent? : string
group? : string
handler : ( interaction : Interaction ) = > any
} >
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constructor ( options : SlashOptions ) {
let id = options . id
if ( options . token !== undefined ) id = atob ( options . token ? . split ( '.' ) [ 0 ] )
if ( id === undefined )
throw new Error ( 'ID could not be found. Pass at least client or token' )
this . id = id
this . client = options . client
this . token = options . token
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this . publicKey = options . publicKey
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this . enabled = options . enabled ? ? true
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if ( this . client ? . _decoratedSlash !== undefined ) {
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this . client . _decoratedSlash . forEach ( ( e ) = > {
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e . handler = e . handler . bind ( this . client )
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this . handlers . push ( e )
} )
}
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if ( this . _decoratedSlash !== undefined ) {
this . _decoratedSlash . forEach ( ( e ) = > {
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e . handler = e . handler . bind ( this . client )
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this . handlers . push ( e )
} )
}
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this . rest =
options . client === undefined
? options . rest === undefined
? new RESTManager ( {
token : this.token
} )
: options . rest
: options . client . rest
this . client ? . on ( 'interactionCreate' , ( interaction ) = >
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this . _process ( interaction )
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)
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this . commands = new SlashCommandsManager ( this )
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}
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getID ( ) : string {
return typeof this . id === 'string' ? this . id : this.id ( )
}
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/** Adds a new Slash Command Handler */
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handle ( handler : SlashCommandHandler ) : SlashClient {
this . handlers . push ( handler )
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return this
}
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/** Load a Slash Module */
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loadModule ( module : SlashModule ) : SlashClient {
this . modules . push ( module )
return this
}
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/** Get all Handlers. Including Slash Modules */
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getHandlers ( ) : SlashCommandHandler [ ] {
let res = this . handlers
for ( const mod of this . modules ) {
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if ( mod === undefined ) continue
res = [
. . . res ,
. . . mod . commands . map ( ( cmd ) = > {
cmd . handler = cmd . handler . bind ( mod )
return cmd
} )
]
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}
return res
}
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/** Get Handler for an Interaction. Supports nested sub commands and sub command groups. */
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private _getCommand ( i : Interaction ) : SlashCommandHandler | undefined {
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return this . getHandlers ( ) . find ( ( e ) = > {
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const hasGroupOrParent = e . group !== undefined || e . parent !== undefined
const groupMatched =
e . group !== undefined && e . parent !== undefined
? i . options
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. find (
( o ) = >
o . name === e . group &&
o . type === SlashCommandOptionType . SUB_COMMAND_GROUP
)
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? . options ? . find ( ( o ) = > o . name === e . name ) !== undefined
: true
const subMatched =
e . group === undefined && e . parent !== undefined
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? i . options . find (
( o ) = >
o . name === e . name &&
o . type === SlashCommandOptionType . SUB_COMMAND
) !== undefined
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: true
const nameMatched1 = e . name === i . name
const parentMatched = hasGroupOrParent ? e . parent === i.name : true
const nameMatched = hasGroupOrParent ? parentMatched : nameMatched1
const matched = groupMatched && subMatched && nameMatched
return matched
} )
}
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/** Process an incoming Interaction */
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private _process ( interaction : Interaction ) : void {
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if ( ! this . enabled ) return
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if (
interaction . type !== InteractionType . APPLICATION_COMMAND ||
interaction . data === undefined
)
return
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const cmd = this . _getCommand ( interaction )
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if ( cmd ? . group !== undefined )
interaction . data . options = interaction . data . options [ 0 ] . options ? ? [ ]
if ( cmd ? . parent !== undefined )
interaction . data . options = interaction . data . options [ 0 ] . options ? ? [ ]
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if ( cmd === undefined ) return
cmd . handler ( interaction )
}
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/** Verify HTTP based Interaction */
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async verifyKey (
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rawBody : string | Uint8Array ,
signature : string | Uint8Array ,
timestamp : string | Uint8Array
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) : Promise < boolean > {
if ( this . publicKey === undefined )
throw new Error ( 'Public Key is not present' )
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const fullBody = new Uint8Array ( [
. . . ( typeof timestamp === 'string'
? encoder . encode ( timestamp )
: timestamp ) ,
. . . ( typeof rawBody === 'string' ? encoder . encode ( rawBody ) : rawBody )
] )
return edverify ( signature , fullBody , this . publicKey ) . catch ( ( ) = > false )
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}
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/** Verify [Deno Std HTTP Server Request](https://deno.land/std/http/server.ts) and return Interaction. **Data present in Interaction returned by this method is very different from actual typings as there is no real `Client` behind the scenes to cache things.** */
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async verifyServerRequest ( req : {
headers : Headers
method : string
body : Deno.Reader
respond : ( options : {
status? : number
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headers? : Headers
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body? : string | Uint8Array
} ) = > Promise < void >
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} ) : Promise < false | Interaction > {
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if ( req . method . toLowerCase ( ) !== 'post' ) return false
const signature = req . headers . get ( 'x-signature-ed25519' )
const timestamp = req . headers . get ( 'x-signature-timestamp' )
if ( signature === null || timestamp === null ) return false
const rawbody = await Deno . readAll ( req . body )
const verify = await this . verifyKey ( rawbody , signature , timestamp )
if ( ! verify ) return false
try {
const payload : InteractionPayload = JSON . parse ( decoder . decode ( rawbody ) )
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// TODO: Maybe fix all this hackery going on here?
const res = new Interaction ( this as any , payload , {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
user : new User ( this as any , ( payload . member ? . user ? ? payload . user ) ! ) ,
member : payload.member as any ,
guild : payload.guild_id as any ,
channel : payload.channel_id as any ,
resolved : ( ( payload . data
? . resolved as unknown ) as InteractionApplicationCommandResolved ) ? ? {
users : { } ,
members : { } ,
roles : { } ,
channels : { }
}
} )
res . _httpRespond = async ( d : InteractionResponsePayload ) = >
await req . respond ( {
status : 200 ,
headers : new Headers ( {
'content-type' : 'application/json'
} ) ,
body : JSON.stringify ( d )
} )
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return res
} catch ( e ) {
return false
}
}
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async verifyOpineRequest ( req : any ) : Promise < boolean > {
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const signature = req . headers . get ( 'x-signature-ed25519' )
const timestamp = req . headers . get ( 'x-signature-timestamp' )
const contentLength = req . headers . get ( 'content-length' )
if ( signature === null || timestamp === null || contentLength === null )
return false
const body = new Uint8Array ( parseInt ( contentLength ) )
await req . body . read ( body )
const verified = await this . verifyKey ( body , signature , timestamp )
if ( ! verified ) return false
return true
}
/** Middleware to verify request in Opine framework. */
async verifyOpineMiddleware (
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req : any ,
res : any ,
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next : CallableFunction
) : Promise < any > {
const verified = await this . verifyOpineRequest ( req )
if ( ! verified ) return res . setStatus ( 401 ) . end ( )
await next ( )
return true
}
// TODO: create verifyOakMiddleware too
/** Method to verify Request from Oak server "Context". */
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async verifyOakRequest ( ctx : any ) : Promise < any > {
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const signature = ctx . request . headers . get ( 'x-signature-ed25519' )
const timestamp = ctx . request . headers . get ( 'x-signature-timestamp' )
const contentLength = ctx . request . headers . get ( 'content-length' )
if (
signature === null ||
timestamp === null ||
contentLength === null ||
ctx . request . hasBody !== true
) {
return false
}
const body = await ctx . request . body ( ) . value
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const verified = await this . verifyKey ( body , signature , timestamp )
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if ( ! verified ) return false
return true
}
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}