import {
  Attachment,
  ChatInputCommandInteraction,
  Message,
  MessageCreateOptions,
  MessageMentionOptions,
  ModalSubmitInteraction,
  TextBasedChannel,
  User,
} from "discord.js";
import { PluginOptions, guildPlugin } from "knub";
import { logger } from "../../logger.js";
import { isContextInteraction, sendContextResponse } from "../../pluginUtils.js";
import { errorMessage, successMessage } from "../../utils.js";
import { getErrorEmoji, getSuccessEmoji } from "./functions/getEmoji.js";
import { CommonPluginType, zCommonConfig } from "./types.js";

const defaultOptions: PluginOptions<CommonPluginType> = {
  config: {
    success_emoji: "✅",
    error_emoji: "❌",
    attachment_storing_channel: null,
  },
};

export const CommonPlugin = guildPlugin<CommonPluginType>()({
  name: "common",
  dependencies: () => [],
  configParser: (input) => zCommonConfig.parse(input),
  defaultOptions,
  public(pluginData) {
    return {
      getSuccessEmoji,
      getErrorEmoji,

      sendSuccessMessage: async (
        context: TextBasedChannel | Message | User | ChatInputCommandInteraction,
        body: string,
        allowedMentions?: MessageMentionOptions,
        responseInteraction?: ModalSubmitInteraction,
        ephemeral = true,
      ): Promise<Message | undefined> => {
        const emoji = getSuccessEmoji(pluginData);
        const formattedBody = successMessage(body, emoji);
        const content: MessageCreateOptions = allowedMentions
          ? { content: formattedBody, allowedMentions }
          : { content: formattedBody };

        if (responseInteraction) {
          await responseInteraction
            .editReply({ content: formattedBody, embeds: [], components: [] })
            .catch((err) => logger.error(`Interaction reply failed: ${err}`));

          return;
        }

        if (!isContextInteraction(context)) {
          // noinspection TypeScriptValidateJSTypes
          return sendContextResponse(context, { ...content }) // Force line break
            .catch((err) => {
              const channelInfo =
                "guild" in context && context.guild ? `${context.id} (${context.guild.id})` : context.id;

              logger.warn(`Failed to send success message to ${channelInfo}): ${err.code} ${err.message}`);

              return undefined;
            });
        }

        const replyMethod = context.replied || context.deferred ? "editReply" : "reply";

        return context[replyMethod]({
          content: formattedBody,
          embeds: [],
          components: [],
          fetchReply: true,
          ephemeral,
        }).catch((err) => {
          logger.error(`Context reply failed: ${err}`);

          return undefined;
        }) as Promise<Message>;
      },

      sendErrorMessage: async (
        context: TextBasedChannel | Message | User | ChatInputCommandInteraction,
        body: string,
        allowedMentions?: MessageMentionOptions,
        responseInteraction?: ModalSubmitInteraction,
        ephemeral = true,
      ): Promise<Message | undefined> => {
        const emoji = getErrorEmoji(pluginData);
        const formattedBody = errorMessage(body, emoji);
        const content: MessageCreateOptions = allowedMentions
          ? { content: formattedBody, allowedMentions }
          : { content: formattedBody };

        if (responseInteraction) {
          await responseInteraction
            .editReply({ content: formattedBody, embeds: [], components: [] })
            .catch((err) => logger.error(`Interaction reply failed: ${err}`));

          return;
        }

        if (!isContextInteraction(context)) {
          // noinspection TypeScriptValidateJSTypes
          return sendContextResponse(context, { ...content }) // Force line break
            .catch((err) => {
              const channelInfo =
                "guild" in context && context.guild ? `${context.id} (${context.guild.id})` : context.id;

              logger.warn(`Failed to send error message to ${channelInfo}): ${err.code} ${err.message}`);

              return undefined;
            });
        }

        const replyMethod = context.replied || context.deferred ? "editReply" : "reply";

        return context[replyMethod]({
          content: formattedBody,
          embeds: [],
          components: [],
          fetchReply: true,
          ephemeral,
        }).catch((err) => {
          logger.error(`Context reply failed: ${err}`);

          return undefined;
        }) as Promise<Message>;
      },

      storeAttachmentsAsMessage: async (attachments: Attachment[], backupChannel?: TextBasedChannel | null) => {
        const attachmentChannelId = pluginData.config.get().attachment_storing_channel;
        const channel = attachmentChannelId
          ? (pluginData.guild.channels.cache.get(attachmentChannelId) as TextBasedChannel) ?? backupChannel
          : backupChannel;

        if (!channel) {
          throw new Error(
            "Cannot store attachments: no attachment storing channel configured, and no backup channel passed",
          );
        }

        return channel!.send({
          content: `Storing ${attachments.length} attachment${attachments.length === 1 ? "" : "s"}`,
          files: attachments.map((a) => a.url),
        });
      },
    };
  },
});