package messages

import (
	"time"

	"go.fifitido.net/twitch/api/eventsub"
)

type Message struct {
	// An ID that uniquely identifies this message.
	// This is an opaque ID, and is not required to be in any particular format.
	Id string

	// Twitch sends you a notification at least once.
	// If Twitch is unsure of whether you received a notification, it’ll resend the event, which means you may receive a notification twice.
	// If this is an issue for your implementation, see Handling duplicates for options: https://dev.twitch.tv/docs/eventsub#handling-duplicate-events
	Retry string

	// The type of notification.
	Type Type

	// The HMAC signature that you use to verify that Twitch sent the message.
	// See Verifying the event message: https://dev.twitch.tv/docs/eventsub/handling-webhook-events/#verifying-the-event-message
	Signature string

	// The UTC date and time (in RFC3339 format) that Twitch sent the notification.
	Timestamp time.Time

	// The subscription type you subscribed to. For example, channel.follow.
	SubscriptionType *eventsub.SubscriptionType

	// The message data.
	//
	// For TypeNotification, this will be a Notification.
	//
	// For TypeWebhookCallbackVerification, this will be a WebhookCallbackVerification.
	//
	// For TypeRevocation, this will be a Revocation.
	Data any
}

type Type string

const (
	// notification — Contains the event's data.
	// See Processing an event: https://dev.twitch.tv/docs/eventsub/handling-webhook-events/#processing-an-event
	TypeNotification Type = "notification"

	// webhook_callback_verification — Contains the challenge used to verify that you own the event handler.
	// See Responding to a challenge request: https://dev.twitch.tv/docs/eventsub/handling-webhook-events/#responding-to-a-challenge-request
	TypeWebhookCallbackVerification Type = "webhook_callback_verification"

	// revocation — Contains the reason why Twitch revoked your subscription.
	// See Revoking your subscription: https://dev.twitch.tv/docs/eventsub/handling-webhook-events/#revoking-your-subscription
	TypeRevocation Type = "revocation"
)

type Subscription struct {
	// Your client ID.
	Id string `json:"id"`

	// The notification’s subscription type.
	Type string `json:"type"`

	// The version of the subscription.
	Version string `json:"version"`

	// The status of the subscription.
	Status string `json:"status"`

	// How much the subscription counts against your limit. See Subscription Limits for more information.
	Cost int `json:"cost"`

	// Subscription-specific parameters.
	Condition map[string]any `json:"condition"`

	// The time the notification was created.
	CreatedAt string `json:"created_at"`
}

type Notification struct {
	// Metadata about the subscription.
	Subscription Subscription `json:"subscription"`

	// The notification’s event data..
	Event any `json:"event"`
}

type Revocation struct {
	// Metadata about the subscription.
	Subscription Subscription `json:"subscription"`
}

type WebhookCallbackVerification struct {
	// The challenge.
	Challenge string `json:"challenge"`

	// Metadata about the subscription.
	Subscription Subscription `json:"subscription"`
}