Added Permissions and stuff

api/channel.go

@@ -9,7 +9,7 @@ import (
 const EndpointChannels = Endpoint + "channels/"
 
 type ChannelModifier struct {
-	ChannelID discord.Snowflake `json:"id,omitempty"`
+	ChannelID discord.Snowflake `json:"id,string,omitempty"`
 
 	// All types
 	Name        string              `json:"name,omitempty"`
@@ -30,10 +30,12 @@ type ChannelModifier struct {
 	UserLimit json.OptionUint `json:"user_limit,omitempty"`
 
 	// Text OR Voice
-	ParentID discord.Snowflake `json:"parent_id,omitempty"`
+	ParentID discord.Snowflake `json:"parent_id,string,omitempty"`
 }
 
-func (c *Client) Channel(channelID discord.Snowflake) (*discord.Channel, error) {
+func (c *Client) Channel(
+	channelID discord.Snowflake) (*discord.Channel, error) {
+
 	var channel *discord.Channel
 
 	return channel,

api/emoji.go

@@ -1,7 +1,10 @@
 package api
 
 import (
+	"errors"
+
 	"github.com/diamondburned/arikawa/discord"
+	"github.com/diamondburned/arikawa/httputil"
 )
 
 // EmojiAPI is a special format that the API wants.
@@ -31,4 +34,61 @@ func (c *Client) Emoji(
 		EndpointGuilds+guildID.String()+"/emojis/"+emojiID.String())
 }
 
-// func (c *Client) CreateEmoji()
+var (
+	ErrEmojiTooLarge = errors.New("Emoji is larger than 256k")
+)
+
+// CreateEmoji creates a new emoji in the guild. This endpoint requires
+// MANAGE_EMOJIS. ContentType must be "image/jpeg", "image/png", or
+// "image/gif". However, ContentType can also be automatically detected
+// (though shouldn't be relied on). Roles slice is optional.
+func (c *Client) CreateEmoji(
+	guildID discord.Snowflake, name string, image Image,
+	roles []discord.Snowflake) (*discord.Emoji, error) {
+
+	image.MaxSize = 256 * 1000
+	if err := image.Validate(); err != nil {
+		return nil, err
+	}
+
+	var param struct {
+		Name  string              `json:"name"`
+		Image Image               `json:"image"`
+		Roles []discord.Snowflake `json:"roles"`
+	}
+
+	param.Name = name
+	param.Roles = roles
+	param.Image = image
+
+	var emj *discord.Emoji
+	return emj, c.RequestJSON(
+		&emj, "POST",
+		EndpointGuilds+guildID.String()+"/emojis",
+		httputil.WithJSONBody(c, param),
+	)
+}
+
+// ModifyEmoji changes an existing emoji. This requires MANAGE_EMOJIS. Name and
+// roles are optional fields (though you'd want to change either though).
+func (c *Client) ModifyEmoji(
+	guildID, emojiID discord.Snowflake, name string,
+	roles []discord.Snowflake) error {
+
+	var param struct {
+		Name  string              `json:"name,omitempty"`
+		Roles []discord.Snowflake `json:"roles,omitempty"`
+	}
+
+	return c.FastRequest(
+		"PATCH",
+		EndpointGuilds+guildID.String()+"/emojis/"+emojiID.String(),
+		httputil.WithJSONBody(c, param),
+	)
+}
+
+// DeleteEmoji requires MANAGE_EMOJIS.
+func (c *Client) DeleteEmoji(guildID, emojiID discord.Snowflake) error {
+	return c.FastRequest("DELETE",
+		EndpointGuilds+guildID.String()+"/emojis/"+emojiID.String())
+}

api/guild.go

@@ -1,3 +1,68 @@
 package api
 
+import (
+	"github.com/diamondburned/arikawa/discord" // for clarity
+	d "github.com/diamondburned/arikawa/discord"
+	"github.com/diamondburned/arikawa/httputil"
+)
+
 const EndpointGuilds = Endpoint + "guilds/"
+
+// https://discordapp.com/developers/docs/resources/guild#create-guild-json-params
+type CreateGuildData struct {
+	Name   string `json:"name"`
+	Region string `json:"region"`
+	Icon   Image  `json:"image"`
+
+	// package dc is just package discord
+	Verification   d.Verification   `json:"verification_level"`
+	Notification   d.Notification   `json:"default_message_notifications"`
+	ExplicitFilter d.ExplicitFilter `json:"explicit_content_filter"`
+
+	// [0] (First entry) is ALWAYS @everyone.
+	Roles []discord.Role `json:"roles"`
+
+	// Partial, id field is ignored. Usually only Name and Type are changed.
+	Channels []discord.Channel `json:"channels"`
+}
+
+func (c *Client) CreateGuild(data CreateGuildData) (*discord.Guild, error) {
+	var g *discord.Guild
+	return g, c.RequestJSON(&g, "POST", Endpoint+"guilds",
+		httputil.WithJSONBody(c, data))
+}
+
+func (c *Client) Guild(guildID discord.Snowflake) (*discord.Guild, error) {
+	var g *discord.Guild
+	return g, c.RequestJSON(&g, "GET", EndpointGuilds+guildID.String())
+}
+
+// https://discordapp.com/developers/docs/resources/guild#modify-guild-json-params
+type ModifyGuildData struct {
+	Name   string `json:"name,omitempty"`
+	Region string `json:"region,omitempty"`
+	Icon   *Image `json:"image,omitempty"`
+
+	// package d is just package discord
+	Verification   *d.Verification   `json:"verification_level,omitempty"`
+	Notification   *d.Notification   `json:"default_message_notifications,omitempty"`
+	ExplicitFilter *d.ExplicitFilter `json:"explicit_content_filter,omitempty"`
+
+	AFKChannelID *d.Snowflake `json:"afk_channel_id,string,omitempty"`
+	AFKTimeout   *d.Seconds   `json:"afk_timeout,omitempty"`
+
+	OwnerID d.Snowflake `json:"owner_id,string,omitempty"`
+
+	Splash *Image `json:"splash,omitempty"`
+	Banner *Image `json:"banner,omitempty"`
+
+	SystemChannelID d.Snowflake `json:"system_channel_id,string,omitempty"`
+}
+
+func (c *Client) ModifyGuild(
+	guildID discord.Snowflake, data ModifyGuildData) (*discord.Guild, error) {
+
+	var g *discord.Guild
+	return g, c.RequestJSON(&g, "PATCH", EndpointGuilds+guildID.String(),
+		httputil.WithJSONBody(c, data))
+}

api/image.go

@@ -0,0 +1,123 @@
+package api
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"net/http"
+
+	"github.com/pkg/errors"
+)
+
+var ErrInvalidImageCT = errors.New("Unknown image content-type")
+var ErrInvalidImageData = errors.New("Invalid image data")
+
+type ErrImageTooLarge struct {
+	Size, Max int
+}
+
+func (err ErrImageTooLarge) Error() string {
+	return fmt.Sprintf("Image is %.02fkb, larger than %.02fkb",
+		float64(err.Size)/1000, float64(err.Max)/1000)
+}
+
+// Image wraps around the Data URI Scheme that Discord uses:
+// https://discordapp.com/developers/docs/reference#image-data
+type Image struct {
+	// ContentType is optional and will be automatically detected. However, it
+	// should always return "image/jpeg," "image/png" or "image/gif".
+	ContentType string
+
+	// Just raw content of the file.
+	Content []byte
+
+	// Utility fields, not used for encoding
+	MaxSize int // bytes
+}
+
+func DecodeImage(data []byte) (*Image, error) {
+	parts := bytes.SplitN(data, []byte{';'}, 2)
+	if len(parts) < 2 {
+		return nil, ErrInvalidImageData
+	}
+
+	if !bytes.HasPrefix(parts[0], []byte("data:")) {
+		return nil, errors.Wrap(ErrInvalidImageData, "invalid header")
+	}
+
+	if !bytes.HasPrefix(parts[1], []byte("base64,")) {
+		return nil, errors.Wrap(ErrInvalidImageData, "invalid base64")
+	}
+
+	var b64 = parts[1][len("base64,"):]
+	var img = Image{
+		ContentType: string(parts[0][len("data:"):]),
+		Content:     make([]byte, base64.StdEncoding.DecodedLen(len(b64))),
+	}
+
+	base64.StdEncoding.Decode(img.Content, b64)
+	return &img, nil
+}
+
+func (i Image) Validate() error {
+	if i.MaxSize > 0 && len(i.Content) > i.MaxSize {
+		return ErrImageTooLarge{len(i.Content), i.MaxSize}
+	}
+
+	switch i.ContentType {
+	case "image/png", "image/jpeg", "image/gif":
+		return nil
+	default:
+		return ErrInvalidImageCT
+	}
+}
+
+func (i Image) Encode() ([]byte, error) {
+	if i.ContentType == "" {
+		var max = 512
+		if len(i.Content) < max {
+			max = len(i.Content)
+		}
+		i.ContentType = http.DetectContentType(i.Content[:max])
+	}
+
+	if err := i.Validate(); err != nil {
+		return nil, err
+	}
+
+	b64enc := make([]byte, base64.StdEncoding.EncodedLen(len(i.Content)))
+	base64.StdEncoding.Encode(b64enc, i.Content)
+
+	return bytes.Join([][]byte{
+		[]byte("data:"),
+		[]byte(i.ContentType),
+		[]byte(";base64,"),
+		b64enc,
+	}, nil), nil
+}
+
+var _ json.Marshaler = (*Image)(nil)
+var _ json.Unmarshaler = (*Image)(nil)
+
+func (i Image) MarshalJSON() ([]byte, error) {
+	b, err := i.Encode()
+	if err != nil {
+		return nil, err
+	}
+
+	return bytes.Join([][]byte{{'"'}, b, {'"'}}, nil), nil
+}
+
+func (i *Image) UnmarshalJSON(v []byte) error {
+	// Trim string
+	v = bytes.Trim(v, `"`)
+
+	img, err := DecodeImage(v)
+	if err != nil {
+		return err
+	}
+
+	*i = *img
+	return nil
+}

discord/channel.go

@@ -16,21 +16,21 @@ type Channel struct {
 	Icon Hash `json:"icon,omitempty"`
 
 	// Direct Messaging fields
-	DMOwnerID    Snowflake `json:"owner_id,omitempty"`
+	DMOwnerID    Snowflake `json:"owner_id,string,omitempty"`
 	DMRecipients []User    `json:"recipients,omitempty"`
 
 	// AppID of the group DM creator if it's bot-created
-	AppID Snowflake `json:"application_id,omitempty"`
+	AppID Snowflake `json:"application_id,string,omitempty"`
 
 	// ID of the category the channel is in, if any.
-	CategoryID Snowflake `json:"parent_id,omitempty"`
+	CategoryID Snowflake `json:"parent_id,string,omitempty"`
 
 	LastPinTime Timestamp `json:"last_pin_timestamp,omitempty"`
 
 	// Explicit permission overrides for members and roles.
 	Permissions []Overwrite `json:"permission_overwrites,omitempty"`
 	// ID of the last message, may not point to a valid one.
-	LastMessageID Snowflake `json:"last_message_id,omitempty"`
+	LastMessageID Snowflake `json:"last_message_id,string,omitempty"`
 
 	// Slow mode duration. Bots and people with "manage_messages" or
 	// "manage_channel" permissions are unaffected.
@@ -54,10 +54,10 @@ const (
 )
 
 type Overwrite struct {
-	ID    Snowflake     `json:"id,omitempty"`
+	ID    Snowflake     `json:"id,string,omitempty"`
 	Type  OverwriteType `json:"type"`
-	Allow uint64        `json:"allow"`
+	Allow Permissions   `json:"allow"`
-	Deny  uint64        `json:"deny"`
+	Deny  Permissions   `json:"deny"`
 }
 
 type OverwriteType string

discord/emoji.go

@@ -3,7 +3,7 @@ package discord
 import "strings"
 
 type Emoji struct {
-	ID   Snowflake `json:"id"` // 0 for Unicode emojis
+	ID   Snowflake `json:"id,string"` // 0 for Unicode emojis
 	Name string    `json:"name"`
 
 	// These fields are optional

discord/guild.go

@@ -1,5 +1,111 @@
 package discord
 
-type Guild struct{}
+type Guild struct {
+	ID     Snowflake `json:"id,string"`
+	Name   string    `json:"name"`
+	Icon   Hash      `json:"icon"`
+	Splash Hash      `json:"splash,omitempty"` // server invite bg
 
-type GuildMember struct{}
+	Owner   bool      `json:"owner,omitempty"` // self is owner
+	OwnerID Snowflake `json:"owner_id,string"`
+
+	Permissions Permissions `json:"permissions,omitempty"`
+
+	VoiceRegion string `json:"region"`
+
+	AFKChannelID Snowflake `json:"afk_channel_id,string,omitempty"`
+	AFKTimeout   Seconds   `json:"afk_timeout"`
+
+	Embeddable     bool      `json:"embed_enabled,omitempty"`
+	EmbedChannelID Snowflake `json:"embed_channel_id,string,omitempty"`
+
+	Verification   Verification   `json:"verification_level"`
+	Notification   Notification   `json:"default_message_notifications"`
+	ExplicitFilter ExplicitFilter `json:"explicit_content_filter"`
+
+	Roles    []Role         `json:"roles"`
+	Emojis   []Emoji        `json:"emojis"`
+	Features []GuildFeature `json:"guild_features"`
+
+	MFA MFALevel `json:"mfa"`
+
+	AppID Snowflake `json:"application_id,string,omitempty"`
+
+	Widget bool `json:"widget_enabled,omitempty"`
+
+	WidgetChannelID Snowflake `json:"widget_channel_id,string,omitempty"`
+	SystemChannelID Snowflake `json:"system_channel_id,string,omitempty"`
+
+	// GUILD_CREATE only.
+	Joined      Timestamp    `json:"timestamp,omitempty"`
+	Large       bool         `json:"large,omitempty"`
+	Unavailable bool         `json:"unavailable,omitempty"`
+	MemberCount uint64       `json:"member_count,omitempty"`
+	VoiceStates []VoiceState `json:"voice_state,omitempty"`
+	Members     []Member     `json:"members,omitempty"`
+	Channels    []Channel    `json:"channel,omitempty"`
+	Presences   []Presence   `json:"presences,omitempty"`
+
+	// It's DefaultMaxPresences when MaxPresences is 0.
+	MaxPresences uint64 `json:"max_presences,omitempty"`
+	MaxMembers   uint64 `json:"max_members,omitempty"`
+
+	VanityURLCode string `json:"vanity_url_code,omitempty"`
+	Description   string `json:"description,omitempty"`
+	Banner        Hash   `json:"banner,omitempty"`
+
+	NitroBoost    NitroBoost `json:"premium_tier"`
+	NitroBoosters uint64     `json:"premium_subscription_count,omitempty"`
+
+	// Defaults to en-US, only set if guild has DISCOVERABLE
+	PreferredLocale string `json:"preferred_locale"`
+}
+
+type Role struct {
+	ID   Snowflake `json:"id,string"`
+	Name string    `json:"name"`
+
+	Color    Color `json:"color"`
+	Hoist    bool  `json:"hoist"` // if the role is separated
+	Position int   `json:"position"`
+
+	Permissions Permissions `json:"permissions"`
+
+	Managed     bool `json:"managed"`
+	Mentionable bool `json:"mentionable"`
+}
+
+type Presence struct {
+	User    User        `json:"user"`
+	RoleIDs []Snowflake `json:"roles"`
+}
+
+type VoiceState struct {
+	// GuildID isn't available from the Guild struct.
+	GuildID Snowflake `json:"guild_id,string"`
+
+	ChannelID Snowflake `json:"channel_id,string"`
+	UserID    Snowflake `json:"user_id,string"`
+	Member    *Member   `json:"member,omitempty"`
+	SessionID string    `json:"session_id"`
+
+	Deaf bool `json:"deaf"`
+	Mute bool `json:"mute"`
+
+	SelfDeaf   bool `json:"self_deaf"`
+	SelfMute   bool `json:"self_mute"`
+	SelfStream bool `json:"self_stream,omitempty"`
+	Suppress   bool `json:"suppress"`
+}
+
+type Member struct {
+	User    User        `json:"user"`
+	Nick    string      `json:"nick,omitempty"`
+	RoleIDs []Snowflake `json:"roles"`
+
+	Joined       Timestamp `json:"joined_at"`
+	BoostedSince Timestamp `json:"premium_since,omitempty"`
+
+	Deaf bool `json:"deaf"`
+	Mute bool `json:"mute"`
+}

discord/guild_const.go

@@ -0,0 +1,87 @@
+package discord
+
+// Guild.MaxPresences is 5000 when it's 0. Seriously. The fucker who thought of
+// this API thought it was also a good idea to return "null" instead of
+// "5000." What the fucK? It has the same byte count, thus the same size.
+// Sending the number over means it could be changed anytime and not force
+// the developers to recheck. You could make the change right today and it
+// would just work on all the clients. But no. IT'S FUCKING NULL!
+const DefaultMaxPresences = 5000
+
+type NitroBoost uint8
+
+const (
+	NoNitroLevel NitroBoost = iota
+	NitroLevel1
+	NitroLevel2
+	NitroLevel3
+)
+
+type MFALevel uint8
+
+const (
+	NoMFA MFALevel = iota
+	ElevatedMFA
+)
+
+type GuildFeature string
+
+const (
+	// Guild has access to set an invite splash background
+	InviteSplash GuildFeature = "INVITE_SPLASH"
+	// Guild has access to set 384kbps bitrate in voice (previously VIP voice
+	// servers)
+	VIPRegions GuildFeature = "VIP_REGIONS"
+	// Guild has access to set a vanity URL
+	VanityURL GuildFeature = "VANITY_URL"
+	// Guild is verified
+	Verified GuildFeature = "VERIFIED"
+	// Guild is partnered
+	Partnered GuildFeature = "PARTNERED"
+	// Guild is public
+	Public GuildFeature = "PUBLIC"
+	// Guild has access to use commerce features (i.e. create store channels)
+	Commerce GuildFeature = "COMMERCE"
+	// Guild has access to create news channels
+	News GuildFeature = "NEWS"
+	// Guild is able to be discovered in the directory
+	Discoverable GuildFeature = "DISCOVERABLE"
+	// Guild is able to be featured in the directory
+	Featurable GuildFeature = "FEATURABLE"
+	// Guild has access to set an animated guild icon
+	AnimatedIcon GuildFeature = "ANIMATED_ICON"
+	// Guild has access to set a guild banner image
+	Banner GuildFeature = "BANNER"
+)
+
+type ExplicitFilter uint8
+
+const (
+	NoContentFilter ExplicitFilter = iota
+	MembersWithoutRoles
+	AllMembers
+)
+
+type Notification uint8
+
+const (
+	AllMessages Notification = iota
+	OnlyMentions
+)
+
+type Verification uint8
+
+const (
+	NoVerification Verification = iota
+	// LowVerification requires a verified email
+	LowVerification
+	// MediumVerification requires the user be registered for at least 5
+	// minutes.
+	MediumVerification
+	// HighVerification requires the member be in the server for more than 10
+	// minutes.
+	HighVerification
+	// VeryHighVerification requires the member to have a verified phone
+	// number.
+	VeryHighVerification
+)

discord/message.go

@@ -1,10 +1,10 @@
 package discord
 
 type Message struct {
-	ID        Snowflake   `json:"id"`
+	ID        Snowflake   `json:"id,string"`
 	Type      MessageType `json:"type"`
-	ChannelID Snowflake   `json:"channel_id"`
+	ChannelID Snowflake   `json:"channel_id,string"`
-	GuildID   Snowflake   `json:"guild_id,omitempty"`
+	GuildID   Snowflake   `json:"guild_id,string,omitempty"`
 
 	// The author object follows the structure of the user object, but is only
 	// a valid user in the case where the message is generated by a user or bot
@@ -16,7 +16,7 @@ type Message struct {
 
 	// The member object exists in MESSAGE_CREATE and MESSAGE_UPDATE
 	// events from text-based guild channels.
-	Member *GuildMember `json:"member,omitempty"`
+	Member *Member `json:"member,omitempty"`
 
 	Content string `json:"content"`
 
@@ -45,7 +45,7 @@ type Message struct {
 	// Used for validating a message was sent
 	Nonce string `json:"nonce,omitempty"`
 
-	WebhookID   Snowflake           `json:"webhook_id,omitempty"`
+	WebhookID   Snowflake           `json:"webhook_id,string,omitempty"`
 	Activity    *MessageActivity    `json:"activity,omitempty"`
 	Application *MessageApplication `json:"application,omitempty"`
 	Reference   *MessageReference   `json:"message_reference,omitempty"`
@@ -81,15 +81,15 @@ const (
 )
 
 type ChannelMention struct {
-	ChannelID   Snowflake   `json:"id"`
+	ChannelID   Snowflake   `json:"id,string"`
-	GuildID     Snowflake   `json:"guild_id"`
+	GuildID     Snowflake   `json:"guild_id,string"`
 	ChannelType ChannelType `json:"type"`
 	ChannelName string      `json:"name"`
 }
 
 type GuildUser struct {
 	User
-	Member *GuildMember `json:"member,omitempty"`
+	Member *Member `json:"member,omitempty"`
 }
 
 //
@@ -113,7 +113,7 @@ const (
 //
 
 type MessageApplication struct {
-	ID          Snowflake `json:"id"`
+	ID          Snowflake `json:"id,string"`
 	CoverID     string    `json:"cover_image,omitempty"`
 	Description string    `json:"description"`
 	Icon        string    `json:"icon"`
@@ -123,17 +123,17 @@ type MessageApplication struct {
 //
 
 type MessageReference struct {
-	ChannelID Snowflake `json:"channel_id"`
+	ChannelID Snowflake `json:"channel_id,string"`
 
 	// Field might not be provided
-	MessageID Snowflake `json:"message_id,omitempty"`
+	MessageID Snowflake `json:"message_id,string,omitempty"`
-	GuildID   Snowflake `json:"guild_id,omitempty"`
+	GuildID   Snowflake `json:"guild_id,string,omitempty"`
 }
 
 //
 
 type Attachment struct {
-	ID       Snowflake `json:"id"`
+	ID       Snowflake `json:"id,string"`
 	Filename string    `json:"filename"`
 	Size     uint64    `json:"size"`
 

discord/permission.go

@@ -0,0 +1,181 @@
+package discord
+
+type Permissions uint64
+
+const (
+	// Allows creation of instant invites
+	PermissionCreateInstantInvite Permissions = 1 << iota
+	// Allows kicking members
+	PermissionKickMembers
+	// Allows banning members
+	PermissionBanMembers
+	// Allows all permissions and bypasses channel permission overwrites
+	PermissionAdministrator
+	// Allows management and editing of channels
+	PermissionManageChannels
+	// Allows management and editing of the guild
+	PermissionManageGuild
+	// Allows for the addition of reactions to messages
+	PermissionAddReactions
+	// Allows for viewing of audit logs
+	PermissionViewAuditLog
+	// Allows for using priority speaker in a voice channel
+	PermissionPrioritySpeaker
+	// Allows the user to go live
+	PermissionStream
+	// Allows guild members to view a channel, which includes reading messages
+	// in text channels
+	PermissionViewChannel
+	// Allows for sending messages in a channel
+	PermissionSendMessages
+	// Allows for sending of /tts messages
+	PermissionSendTTSMessages
+	// Allows for deletion of other users messages
+	PermissionManageMessages
+	// Links sent by users with this permission will be auto-embedded
+	PermissionEmbedLinks
+	// Allows for uploading images and files
+	PermissionAttachFiles
+	// Allows for reading of message history
+	PermissionReadMessageHistory
+	// Allows for using the @everyone tag to notify all users in a channel,
+	// and the @here tag to notify all online users in a channel
+	PermissionMentionEveryone
+	// Allows the usage of custom emojis from other servers
+	PermissionUseExternalEmojis
+
+	_ // ?
+
+	// Allows for joining of a voice channel
+	PermissionConnect
+	// Allows for speaking in a voice channel
+	PermissionSpeak
+	// Allows for muting members in a voice channel
+	PermissionMuteMembers
+	// Allows for deafening of members in a voice channel
+	PermissionDeafenMembers
+	// Allows for moving of members between voice channels
+	PermissionMoveMembers
+	// Allows for using voice-activity-detection in a voice channel
+	PermissionUseVAD
+	// Allows for modification of own nickname
+	PermissionChangeNickname
+	// Allows for modification of other users nicknames
+	PermissionManageNicknames
+	// Allows management and editing of roles
+	PermissionManageRoles
+	// Allows management and editing of webhooks
+	PermissionManageWebhooks
+	// Allows management and editing of emojis
+	PermissionManageEmojis
+
+	PermissionAllText = 0 |
+		PermissionViewChannel |
+		PermissionSendMessages |
+		PermissionSendTTSMessages |
+		PermissionManageMessages |
+		PermissionEmbedLinks |
+		PermissionAttachFiles |
+		PermissionReadMessageHistory |
+		PermissionMentionEveryone
+
+	PermissionAllVoice = 0 |
+		PermissionConnect |
+		PermissionSpeak |
+		PermissionMuteMembers |
+		PermissionDeafenMembers |
+		PermissionMoveMembers |
+		PermissionUseVAD |
+		PermissionPrioritySpeaker
+
+	PermissionAllChannel = 0 |
+		PermissionAllText |
+		PermissionAllVoice |
+		PermissionCreateInstantInvite |
+		PermissionManageRoles |
+		PermissionManageChannels |
+		PermissionAddReactions |
+		PermissionViewAuditLog
+
+	PermissionAll = 0 |
+		PermissionAllChannel |
+		PermissionKickMembers |
+		PermissionBanMembers |
+		PermissionManageGuild |
+		PermissionAdministrator |
+		PermissionManageWebhooks |
+		PermissionManageEmojis
+)
+
+func (p Permissions) Has(perm Permissions) bool {
+	return (p & perm) == perm
+}
+
+func (p Permissions) Add(perm Permissions) Permissions {
+	return p | perm
+}
+
+func CalcOverwrites(guild Guild, channel Channel, member Member) Permissions {
+	if guild.OwnerID == member.User.ID {
+		return PermissionAll
+	}
+
+	var perm Permissions
+
+	for _, role := range guild.Roles {
+		if role.ID == guild.ID {
+			perm |= role.Permissions
+			break
+		}
+	}
+
+	for _, role := range guild.Roles {
+		for _, id := range member.RoleIDs {
+			if id == role.ID {
+				perm |= role.Permissions
+				break
+			}
+		}
+	}
+
+	if perm.Has(PermissionAdministrator) {
+		return PermissionAll
+	}
+
+	for _, overwrite := range channel.Permissions {
+		if overwrite.ID == guild.ID {
+			perm &= ^overwrite.Deny
+			perm |= overwrite.Allow
+			break
+		}
+	}
+
+	var deny, allow Permissions
+
+	for _, overwrite := range channel.Permissions {
+		for _, id := range member.RoleIDs {
+			if id == overwrite.ID && overwrite.Type == "role" {
+				deny |= overwrite.Deny
+				allow |= overwrite.Allow
+				break
+			}
+		}
+	}
+
+	perm &= ^deny
+	perm |= allow
+
+	for _, overwrite := range channel.Permissions {
+		if overwrite.ID == member.User.ID {
+			perm &= ^overwrite.Deny
+			perm |= overwrite.Allow
+			break
+		}
+	}
+
+	if perm.Has(PermissionAdministrator) {
+		return PermissionAll
+	}
+
+	return perm
+}

discord/snowflake.go

@@ -1,6 +1,7 @@
 package discord
 
 import (
+	"bytes"
 	"strconv"
 	"time"
 )
@@ -13,6 +14,21 @@ func NewSnowflake(t time.Time) Snowflake {
 	return Snowflake(TimeToDiscordEpoch(t) << 22)
 }
 
+func (s *Snowflake) UnmarshalJSON(v []byte) error {
+	v = bytes.Trim(v, `"`)
+	u, err := strconv.ParseUint(string(v), 10, 64)
+	if err != nil {
+		return err
+	}
+
+	*s = Snowflake(u)
+	return nil
+}
+
+func (s *Snowflake) MarshalJSON() ([]byte, error) {
+	return []byte(`"` + strconv.FormatUint(uint64(*s), 10) + `"`), nil
+}
+
 func (s Snowflake) String() string {
 	return strconv.FormatUint(uint64(s), 10)
 }

discord/user.go

@@ -1,7 +1,7 @@
 package discord
 
 type User struct {
-	UserID        Snowflake `json:"id"`
+	ID            Snowflake `json:"id,string"`
 	Username      string    `json:"username"`
 	Discriminator string    `json:"discriminator"`
 	Avatar        Hash      `json:"avatar"`
@@ -18,7 +18,7 @@ type User struct {
 	Email  string `json:"email,omitempty"`
 
 	Flags UserFlags `json:"flags,omitempty"`
-	Nitro Nitro     `json:"premium_type,omitempty"`
+	Nitro UserNitro `json:"premium_type,omitempty"`
 }
 
 type UserFlags uint16
@@ -38,10 +38,10 @@ const (
 	System
 )
 
-type Nitro uint8
+type UserNitro uint8
 
 const (
-	NoNitro Nitro = iota
+	NoUserNitro UserNitro = iota
 	NitroClassic
 	NitroFull
 )