import type { Model } from "./Base.ts";
import type { Session } from "../Session.ts";
import type { Snowflake } from "../Snowflake.ts";
import type { DiscordMessageComponents, DiscordEmbed, DiscordMessage, DiscordWebhook, FileContent, WebhookTypes } from "../../discordeno/mod.ts";
import type { WebhookOptions } from "../Routes.ts";
import type { Attachment } from "./Attachment.ts";
import type { CreateMessage, AllowedMentions } from "./Message.ts";
import Util from "../Util.ts";
import User from "./User.ts";
import Message from "./Message.ts";
import * as Routes from "../Routes.ts";

/**
 * @link https://discord.com/developers/docs/resources/webhook#edit-webhook-message-jsonform-params
 * */
export interface EditWebhookMessage {
    content?: string;
    embeds?: DiscordEmbed[];
    files?: FileContent[];
    allowedMentions?: AllowedMentions;
    attachments?: Attachment[];
    components?: DiscordMessageComponents;
}

export class Webhook implements Model {
    constructor(session: Session, data: DiscordWebhook) {
        this.session = session;
        this.id = data.id;
        this.type = data.type;
        this.token = data.token;

        if (data.avatar) {
            this.avatar = Util.iconHashToBigInt(data.avatar);
        }

        if (data.user) {
            this.user = new User(session, data.user);
        }

        if (data.guild_id) {
            this.guildId = data.guild_id;
        }

        if (data.channel_id) {
            this.channelId = data.channel_id;
        }

        if (data.application_id) {
            this.applicationId = data.application_id;
        }
    }

    readonly session: Session;
    readonly id: Snowflake;
    type: WebhookTypes;
    token?: string;
    avatar?: bigint;
    applicationId?: Snowflake;
    channelId?: Snowflake;
    guildId?: Snowflake;
    user?: User;

    async execute(options?: WebhookOptions & CreateMessage & { avatarUrl?: string; username?: string }): Promise<(Message | undefined)> {
        if (!this.token) {
            return;
        }

        const data = {
            content: options?.content,
            embeds: options?.embeds,
            tts: options?.tts,
            allowed_mentions: options?.allowedMentions,
            components: options?.components,
            file: options?.files,
        };

        const message = this.session.rest.sendRequest<DiscordMessage>(this.session.rest, {
            url: Routes.WEBHOOK(this.id, this.token!, {
                wait: options?.wait,
                threadId: options?.threadId,
            }),
            method: "POST",
            payload: this.session.rest.createRequestBody(this.session.rest, {
                method: "POST",
                body: {
                    ...data,
                },
            }),
        });

        return (options?.wait ?? true) ? new Message(this.session, await(message)) : undefined;
    }

    async fetch(): Promise<Webhook> {
        const message = await this.session.rest.runMethod<DiscordWebhook>(
            this.session.rest,
            "GET",
            Routes.WEBHOOK_TOKEN(this.id, this.token),
        );

        return new Webhook(this.session, message);
    }

    async fetchMessage(messageId: Snowflake, options?: { threadId?: Snowflake }): Promise<Message | undefined> {
        if (!this.token) {
            return;
        }

        const message = await this.session.rest.runMethod<DiscordMessage>(
            this.session.rest,
            "GET",
            Routes.WEBHOOK_MESSAGE(this.id, this.token, messageId, options),
        );

        return new Message(this.session, message);
    }

    async deleteMessage(messageId: Snowflake, options?: { threadId?: Snowflake }): Promise<void> {
        if (!this.token) {
            throw new Error("No token found");
        }

        await this.session.rest.runMethod<undefined>(
            this.session.rest,
            "DELETE",
            Routes.WEBHOOK_MESSAGE(this.id, this.token, messageId, options),
        );
    }

    async editMessage(messageId?: Snowflake, options?: EditWebhookMessage & { threadId?: Snowflake }): Promise<Message> {
        if (!this.token) {
            throw new Error("No token found");
        }

        const message = await this.session.rest.runMethod<DiscordMessage>(
            this.session.rest,
            "PATCH",
            messageId
                ? Routes.WEBHOOK_MESSAGE(this.id, this.token, messageId)
                : Routes.WEBHOOK_MESSAGE_ORIGINAL(this.id, this.token),
            {
                content: options?.content,
                embeds: options?.embeds,
                file: options?.files,
                components: options?.components,
                allowed_mentions: options?.allowedMentions || {
                    parse: options?.allowedMentions!.parse,
                    replied_user: options?.allowedMentions!.repliedUser,
                    users: options?.allowedMentions!.users,
                    roles: options?.allowedMentions!.roles,
                },
                attachments: options?.attachments?.map((attachment) => {
                    return {
                        id: attachment.id,
                        filename: attachment.name,
                        content_type: attachment.contentType,
                        size: attachment.size,
                        url: attachment.attachment,
                        proxy_url: attachment.proxyUrl,
                        height: attachment.height,
                        width: attachment.width,
                        ephemeral: attachment.ephemeral,
                    };
                }),
            }
        );

        return new Message(this.session, message);
    }
}

export default Webhook;