package discord

import (
	"github.com/diamondburned/arikawa/utils/json/enum"
)

// Guild.MaxPresences is this value when it's 0.
// This happens because the Discord API sends JSON null, if the MaxPresences
// reach DefaultMaxPresences, which in turn will be serialized into 0.
const DefaultMaxPresences = 25000

// NitroBoost is the premium tier (Server Boost level).
type NitroBoost uint8

// https://discord.com/developers/docs/resources/guild#guild-object-premium-tier
const (
	NoNitroLevel NitroBoost = iota
	NitroLevel1
	NitroLevel2
	NitroLevel3
)

// MFALevel is the required MFA level for a guild.
type MFALevel uint8

// https://discord.com/developers/docs/resources/guild#guild-object-mfa-level
const (
	NoMFA MFALevel = iota
	ElevatedMFA
)

type SystemChannelFlags uint8

// https://discord.com/developers/docs/resources/guild#guild-object-system-channel-flags
const (
	// SuppressJoinNotifications suppresses member join notifications.
	SuppressJoinNotifications SystemChannelFlags = 1 << iota
	// SuppressPremiumSubscriptions suppresses server boost notifications.
	SuppressPremiumSubscriptions
)

type GuildFeature string

// https://discord.com/developers/docs/resources/guild#guild-object-guild-features
const (
	// InviteSplash is set, if the guild has access to set an invite splash
	// background.
	InviteSplash GuildFeature = "INVITE_SPLASH"
	// VIPRegions is set, if the guild has access to set 384kbps bitrate in
	// voice (previously VIP voice servers).
	VIPRegions GuildFeature = "VIP_REGIONS"
	// VanityURL is set, if the guild has access to set a vanity URL.
	VanityURL GuildFeature = "VANITY_URL"
	// Verified is set, if the guild is verified.
	Verified GuildFeature = "VERIFIED"
	// Partnered is set, if the guild is partnered.
	Partnered GuildFeature = "PARTNERED"
	// Public is set, if the guild is public.
	Public GuildFeature = "PUBLIC"
	// Commerce is set, if the guild has access to use commerce features
	// (i.e. create store channels).
	Commerce GuildFeature = "COMMERCE"
	// News is set, if the guild has access to create news channels.
	News GuildFeature = "NEWS"
	// Discoverable is set, if the guild is able to be discovered in the
	// directory.
	Discoverable GuildFeature = "DISCOVERABLE"
	// Featurable is set, if the guild is able to be featured in the directory.
	Featurable GuildFeature = "FEATURABLE"
	// AnimatedIcon is set, if the guild has access to set an animated guild
	// icon.
	AnimatedIcon GuildFeature = "ANIMATED_ICON"
	// Banner is set, if the guild has access to set a guild banner image.
	Banner GuildFeature = "BANNER"
)

// ExplicitFilter is the explicit content filter level of a guild.
type ExplicitFilter enum.Enum

// https://discord.com/developers/docs/resources/guild#guild-object-explicit-content-filter-level
var (
	// NullExplicitFilter serialized to JSON null.
	// This should only be used on nullable fields.
	NullExplicitFilter ExplicitFilter = enum.Null
	// NoContentFilter disables content filtering for the guild.
	NoContentFilter ExplicitFilter = 0
	// MembersWithoutRoles filters only members without roles.
	MembersWithoutRoles ExplicitFilter = 1
	// AllMembers enables content filtering for all members.
	AllMembers ExplicitFilter = 2
)

func (f *ExplicitFilter) UnmarshalJSON(b []byte) error {
	i, err := enum.FromJSON(b)
	*f = ExplicitFilter(i)

	return err
}

func (f ExplicitFilter) MarshalJSON() ([]byte, error) {
	return enum.ToJSON(enum.Enum(f)), nil
}

// Notification is the default message notification level of a guild.
type Notification enum.Enum

// https://discord.com/developers/docs/resources/guild#guild-object-default-message-notification-level
var (
	// NullNotification serialized to JSON null.
	// This should only be used on nullable fields.
	NullNotification Notification = enum.Null
	// AllMessages sends notifications for all messages.
	AllMessages Notification = 0
	// OnlyMentions sends notifications only on mention.
	OnlyMentions Notification = 1
)

func (n *Notification) UnmarshalJSON(b []byte) error {
	i, err := enum.FromJSON(b)
	*n = Notification(i)

	return err
}

func (n Notification) MarshalJSON() ([]byte, error) { return enum.ToJSON(enum.Enum(n)), nil }

// Verification is the verification level required for a guild.
type Verification enum.Enum

// https://discord.com/developers/docs/resources/guild#guild-object-verification-level
var (
	// NullVerification serialized to JSON null.
	// This should only be used on nullable fields.
	NullVerification Verification = enum.Null
	// NoVerification required no verification.
	NoVerification Verification = 0
	// LowVerification requires a verified email
	LowVerification Verification = 1
	// MediumVerification requires the user be registered for at least 5
	// minutes.
	MediumVerification Verification = 2
	// HighVerification requires the member be in the server for more than 10
	// minutes.
	HighVerification Verification = 3
	// VeryHighVerification requires the member to have a verified phone
	// number.
	VeryHighVerification Verification = 4
)

func (v *Verification) UnmarshalJSON(b []byte) error {
	i, err := enum.FromJSON(b)
	*v = Verification(i)

	return err
}

func (v Verification) MarshalJSON() ([]byte, error) { return enum.ToJSON(enum.Enum(v)), nil }

// Service is used for guild integrations and user connections.
type Service string

const (
	Twitch  Service = "twitch"
	YouTube Service = "youtube"
)

// ExpireBehavior is the integration expire behavior that regulates what happens, if a subscriber expires.
type ExpireBehavior uint8

// https://discord.com/developers/docs/resources/guild#integration-object-integration-expire-behaviors
var (
	// RemoveRole removes the role of the subscriber.
	RemoveRole ExpireBehavior = 0
	// Kick kicks the subscriber from the guild.
	Kick ExpireBehavior = 1
)