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path: root/src/server.ts
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import { AutoRouter } from "itty-router";
import { InteractionResponseType, InteractionType } from "discord-interactions";
import {
  HOT_COMMAND,
  ROLEPLAY_COMMAND,
  NSFW_COMMAND,
  TOP_COMMAND,
  COMPLAIN_COMMAND,
} from "./discord/commands.ts";
import {
  getCutePost,
  getRoleplayPost,
  getNSFWPost,
  getTopPost,
} from "./reddit.ts";
import type { TimePeriod } from "./discord/types.ts";
import type { Environment, DiscordEmbed } from "./discord/interfaces.ts";
import { createPostEmbed, createComplaintEmbed } from "./discord/embeds.ts";
import { JSONResponse } from "./discord/responses.ts";
import { verifyDiscordRequest } from "./discord/verification.ts";

const router = AutoRouter();
const COMPLAINT_CHANNEL_ID = "1406422617724026901";

const sendComplaintToChannel = async (
  environment: Environment,
  embed: DiscordEmbed,
): Promise<boolean> => {
  const url = `https://discord.com/api/v10/channels/${COMPLAINT_CHANNEL_ID}/messages`;

  try {
    const response = await fetch(url, {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        Authorization: `Bot ${environment.DISCORD_TOKEN}`,
      },
      body: JSON.stringify({
        embeds: [embed],
      }),
    });

    return response.ok;
  } catch (error) {
    console.error("Error sending complaint to channel:", error);

    return false;
  }
};

router.get("/", (_request: Request, environment: Environment) => {
  return new Response(`👋 ${environment.DISCORD_APPLICATION_ID}`);
});

router.post("/", async (request: Request, environment: Environment) => {
  const { isValid, interaction } = await server.verifyDiscordRequest(
    request,
    environment,
  );

  if (!isValid || !interaction)
    return new Response("Bad request signature.", { status: 401 });

  if (interaction.type === InteractionType.PING)
    return new JSONResponse({
      type: InteractionResponseType.PONG,
    });

  if (interaction.type === InteractionType.APPLICATION_COMMAND) {
    switch (interaction.data.name.toLowerCase()) {
      case HOT_COMMAND.name.toLowerCase(): {
        try {
          const post = await getCutePost();
          const embed = createPostEmbed(post);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              embeds: [embed],
            },
          });
        } catch (error) {
          console.error("Error in hot command:", error);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              content: "❌ No posts found. Try again later!",
              flags: 64,
            },
          });
        }
      }

      case ROLEPLAY_COMMAND.name.toLowerCase(): {
        try {
          const post = await getRoleplayPost();
          const embed = createPostEmbed(post);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              embeds: [embed],
            },
          });
        } catch (error) {
          console.error("Error in roleplay command:", error);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              content: "❌ No roleplay posts found. Try again later!",
              flags: 64,
            },
          });
        }
      }

      case NSFW_COMMAND.name.toLowerCase(): {
        if (!interaction.channel_id || !interaction.channel?.nsfw) {
          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              content: "❌ This command can only be used in NSFW channels.",
              flags: 64,
            },
          });
        }

        try {
          const post = await getNSFWPost();
          const embed = createPostEmbed(post);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              embeds: [embed],
            },
          });
        } catch (error) {
          console.error("Error in NSFW command:", error);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              content: "❌ No NSFW posts found. Try again later!",
              flags: 64,
            },
          });
        }
      }

      case TOP_COMMAND.name.toLowerCase(): {
        try {
          const time =
            (interaction.data.options?.[0]?.value as TimePeriod) || "day";
          const post = await getTopPost(time);
          const embed = createPostEmbed(post);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              embeds: [embed],
            },
          });
        } catch (error) {
          console.error("Error in top command:", error);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              content: "❌ No top posts found. Try again later!",
              flags: 64,
            },
          });
        }
      }

      case COMPLAIN_COMMAND.name.toLowerCase(): {
        try {
          const complaintMessage = interaction.data.options?.[0]
            ?.value as string;

          if (!complaintMessage)
            return new JSONResponse({
              type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
              data: {
                content: "❌ Please provide a message for your complaint.",
                flags: 64,
              },
            });

          const complainant = {
            username:
              interaction.member?.user?.username ||
              interaction.user?.username ||
              "Unknown",
            id:
              interaction.member?.user?.id || interaction.user?.id || "Unknown",
            avatar:
              interaction.member?.user?.avatar || interaction.user?.avatar,
          };
          const isDM = !interaction.guild_id;
          const complaintEmbed = createComplaintEmbed(
            complaintMessage,
            complainant,
            Date.now(),
            isDM,
          );
          const success = await sendComplaintToChannel(
            environment,
            complaintEmbed,
          );

          if (success) {
            return new JSONResponse({
              type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
              data: {
                content: "✅ Your complaint has been submitted successfully!",
                flags: 64,
              },
            });
          } else {
            return new JSONResponse({
              type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
              data: {
                content:
                  "❌ Failed to submit your complaint. Please try again later.",
                flags: 64,
              },
            });
          }
        } catch (error) {
          console.error("Error in complain command:", error);

          return new JSONResponse({
            type: InteractionResponseType.CHANNEL_MESSAGE_WITH_SOURCE,
            data: {
              content: "❌ An error occurred while processing your complaint.",
              flags: 64,
            },
          });
        }
      }

      default:
        return new JSONResponse({ error: "Unknown Type" }, { status: 400 });
    }
  }

  console.error("Unknown Type");

  return new JSONResponse({ error: "Unknown Type" }, { status: 400 });
});

router.all("*", () => new Response("Not Found.", { status: 404 }));

const server = {
  verifyDiscordRequest,
  fetch: router.fetch,
};

export default server;