package gateway

import "github.com/diamondburned/arikawa/discord"

// Rules: VOICE_STATE_UPDATE -> VoiceStateUpdateEvent

// https://discordapp.com/developers/docs/topics/gateway#connecting-and-resuming
type (
	HelloEvent struct {
		HeartbeatInterval discord.Milliseconds `json:"heartbeat_interval"`
	}

	ReadyEvent struct {
		Version int `json:"version"`

		User      discord.User `json:"user"`
		SessionID string       `json:"session_id"`

		PrivateChannels []discord.Channel `json:"private_channels"`
		Guilds          []discord.Guild   `json:"guilds"`

		Shard *Shard `json:"shard"`

		// Undocumented fields
		Presences []discord.Presence           `json:"presences,omitempty"`
		Notes     map[discord.Snowflake]string `json:"notes,omitempty"`
	}

	ResumedEvent struct{}

	// InvalidSessionEvent indicates if the event is resumable.
	InvalidSessionEvent bool
)

// https://discordapp.com/developers/docs/topics/gateway#channels
type (
	ChannelCreateEvent     discord.Channel
	ChannelUpdateEvent     discord.Channel
	ChannelDeleteEvent     discord.Channel
	ChannelPinsUpdateEvent struct {
		GuildID   discord.Snowflake `json:"guild_id,omitempty"`
		ChannelID discord.Snowflake `json:"channel_id,omitempty"`
		LastPin   discord.Timestamp `json:"timestamp,omitempty"`
	}
)

// https://discordapp.com/developers/docs/topics/gateway#guilds
type (
	GuildCreateEvent struct {
		discord.Guild

		Joined      discord.Timestamp `json:"timestamp,omitempty"`
		Large       bool              `json:"large,omitempty"`
		Unavailable bool              `json:"unavailable,omitempty"`
		MemberCount uint64            `json:"member_count,omitempty"`

		VoiceStates []discord.VoiceState `json:"voice_state,omitempty"`
		Members     []discord.Member     `json:"members,omitempty"`
		Channels    []discord.Channel    `json:"channel,omitempty"`
		Presences   []discord.Presence   `json:"presences,omitempty"`
	}
	GuildUpdateEvent discord.Guild
	GuildDeleteEvent struct {
		ID discord.Snowflake `json:"id"`
		// Unavailable if false == removed
		Unavailable bool `json:"unavailable"`
	}

	GuildBanAddEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		User    discord.User      `json:"user"`
	}
	GuildBanRemoveEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		User    discord.User      `json:"user"`
	}

	GuildEmojisUpdateEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		Emojis  []discord.Emoji   `json:"emoji"`
	}

	GuildIntegrationsUpdateEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
	}

	GuildMemberAddEvent struct {
		discord.Member
		GuildID discord.Snowflake `json:"guild_id"`
	}
	GuildMemberRemoveEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		User    discord.User      `json:"user"`
	}
	GuildMemberUpdateEvent struct {
		GuildID discord.Snowflake   `json:"guild_id"`
		RoleIDs []discord.Snowflake `json:"roles"`
		User    discord.User        `json:"user"`
		Nick    string              `json:"nick"`
	}

	// GuildMembersChunkEvent is sent when Guild Request Members is called.
	GuildMembersChunkEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		Members []discord.Member  `json:"members"`

		// Whatever's not found goes here
		NotFound []string `json:"not_found,omitempty"`

		// Only filled if requested
		Presences []discord.Presence `json:"presences,omitempty"`
	}

	GuildRoleCreateEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		Role    discord.Role      `json:"role"`
	}
	GuildRoleUpdateEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		Role    discord.Role      `json:"role"`
	}
	GuildRoleDeleteEvent struct {
		GuildID discord.Snowflake `json:"guild_id"`
		RoleID  discord.Snowflake `json:"role_id"`
	}
)

func (u GuildMemberUpdateEvent) Update(m *discord.Member) {
	m.RoleIDs = u.RoleIDs
	m.User = u.User
	m.Nick = u.Nick
}

// https://discordapp.com/developers/docs/topics/gateway#messages
type (
	MessageCreateEvent discord.Message
	MessageUpdateEvent discord.Message
	MessageDeleteEvent struct {
		ID        discord.Snowflake `json:"id"`
		ChannelID discord.Snowflake `json:"channel_id"`
		GuildID   discord.Snowflake `json:"guild_id,omitempty"`
	}
	MessageDeleteBulkEvent struct {
		IDs       []discord.Snowflake `json:"ids"`
		ChannelID discord.Snowflake   `json:"channel_id"`
		GuildID   discord.Snowflake   `json:"guild_id,omitempty"`
	}

	MessageReactionAddEvent struct {
		UserID    discord.Snowflake `json:"user_id"`
		ChannelID discord.Snowflake `json:"channel_id"`
		MessageID discord.Snowflake `json:"message_id"`

		Emoji discord.Emoji `json:"emoji,omitempty"`

		GuildID discord.Snowflake `json:"guild_id,omitempty"`
		Member  *discord.Member   `json:"member,omitempty"`
	}
	MessageReactionRemoveEvent struct {
		UserID    discord.Snowflake `json:"user_id"`
		ChannelID discord.Snowflake `json:"channel_id"`
		MessageID discord.Snowflake `json:"message_id"`

		Emoji discord.Emoji `json:"emoji"`

		GuildID discord.Snowflake `json:"guild_id,omitempty"`
	}
	MessageReactionRemoveAllEvent struct {
		ChannelID discord.Snowflake `json:"channel_id"`
	}
)

// https://discordapp.com/developers/docs/topics/gateway#presence
type (
	// Clients may only update their game status 5 times per 20 seconds.
	PresenceUpdateEvent discord.Presence
	TypingStartEvent    struct {
		ChannelID discord.Snowflake `json:"channel_id"`
		UserID    discord.Snowflake `json:"user_id"`
		Timestamp discord.Timestamp `json:"timestamp"`

		GuildID discord.Snowflake `json:"guild_id,omitempty"`
		Member  *discord.Member   `json:"member,omitempty"`
	}
	UserUpdateEvent discord.User
)

func (u PresenceUpdateEvent) Update(p *discord.Presence) {

}

// https://discordapp.com/developers/docs/topics/gateway#voice
type (
	VoiceStateUpdateEvent  discord.VoiceState
	VoiceServerUpdateEvent struct {
		Token    string            `json:"token"`
		GuildID  discord.Snowflake `json:"guild_id"`
		Endpoint string            `json:"endpoint"`
	}
)

// https://discordapp.com/developers/docs/topics/gateway#webhooks
type (
	WebhooksUpdateEvent struct {
		GuildID   discord.Snowflake `json:"guild_id"`
		ChannelID discord.Snowflake `json:"channel_id"`
	}
)