import {
  deleteChannel,
  deleteRole,
  deleteServer,
  getChannel,
} from "../src/api/handlers/guild.ts";
import {
  addReaction,
  assertEquals,
  assertExists,
  botID,
  cache,
  Channel,
  channelOverwriteHasPermission,
  createGuildChannel,
  createGuildRole,
  createServer,
  delay,
  deleteMessageByID,
  editChannel,
  editRole,
  getMessage,
  getPins,
  Guild,
  OverwriteType,
  pin,
  removeReaction,
  Role,
  sendMessage,
  startBot,
  unpin,
} from "./deps.ts";

const token = Deno.env.get("DISCORD_TOKEN");
if (!token) throw new Error("Token is not provided");

startBot({
  token,
  intents: ["GUILD_MESSAGES", "GUILDS"],
});

// Default options for tests
export const defaultTestOptions = {
  sanitizeOps: false,
  sanitizeResources: false,
};

// Temporary data
export const tempData = {
  guildID: "",
  roleID: "",
  channelID: "",
  messageID: "",
};

// Main
Deno.test({
  name: "[main] connect to gateway",
  fn: async () => {
    // Delay the execution by 5 seconds
    await delay(5000);

    // Assertions
    assertExists(botID);
  },
  ...defaultTestOptions,
});

// Guild

Deno.test({
  name: "[guild] create a new guild",
  async fn() {
    const guild = await createServer({
      name: "Discordeno Test",
    }) as Guild;

    // Assertions
    assertExists(guild);

    tempData.guildID = guild.id;

    // Delay the execution by 5 seconds to allow GUILD_CREATE event to be processed
    await delay(5000);
  },
  ...defaultTestOptions,
});

// Role

Deno.test({
  name: "[role] create a role in a guild",
  async fn() {
    if (!tempData.guildID) {
      throw new Error("guildID not present in temporary data");
    }

    const name = "Discordeno Test";
    const role = await createGuildRole(tempData.guildID, {
      name,
    });

    // Assertions
    assertExists(role);
    assertEquals(role.name, name);

    tempData.roleID = role.id;
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[role] edit a role in a guild",
  async fn() {
    const name = "Discordeno Test Edited";
    const color = 4320244;
    const role = await editRole(tempData.guildID, tempData.roleID, {
      name,
      color,
      hoist: false,
      mentionable: false,
    }) as Role;

    // Assertions
    assertExists(role);
    assertEquals(role.name, name);
    assertEquals(role.color, color);
    assertEquals(role.hoist, false);
    assertEquals(role.mentionable, false);

    tempData.roleID = role.id;
  },
  ...defaultTestOptions,
});

// Channel

Deno.test({
  name: "[channel] create a channel in a guild",
  async fn() {
    const guild = cache.guilds.get(tempData.guildID);
    if (!guild) throw new Error("Guild not found");

    const channel = await createGuildChannel(guild, "test");

    // Assertions
    assertExists(channel);

    tempData.channelID = channel.id;
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[channel] get a channel in a guild",
  async fn() {
    const channel = await getChannel(tempData.channelID);

    // Assertions
    assertExists(channel);
    assertEquals(channel.id, tempData.channelID);
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[channel] edit a channel in a guild",
  async fn() {
    const channel = await editChannel(tempData.channelID, {
      name: "discordeno-test-edited",
      overwrites: [
        {
          id: tempData.roleID,
          type: OverwriteType.ROLE,
          allow: ["VIEW_CHANNEL", "SEND_MESSAGES"],
          deny: ["USE_EXTERNAL_EMOJIS"],
        },
      ],
    }) as Channel;

    // Wait 5s for CHANNEL_UPDATE to fire
    await delay(5000);

    // Assertions
    assertExists(channel);
    assertEquals(channel.name, "discordeno-test-edited");
  },
});

Deno.test({
  name: "[channel] channel overwrite has permission",
  fn() {
    const channel = cache.channels.get(tempData.channelID);
    if (!channel) throw new Error("Channel not found");
    if (!channel.permissionOverwrites) {
      throw new Error("permissionOverwrites not found");
    }

    const hasPerm = channelOverwriteHasPermission(
      tempData.guildID,
      tempData.roleID,
      channel.permissionOverwrites,
      ["VIEW_CHANNEL", "SEND_MESSAGES"],
    );
    const missingPerm = channelOverwriteHasPermission(
      tempData.guildID,
      tempData.roleID,
      channel.permissionOverwrites,
      ["USE_EXTERNAL_EMOJIS"],
    );

    assertEquals(hasPerm, true);
    assertEquals(missingPerm, false);
  },
  ...defaultTestOptions,
});

// Message

Deno.test({
  name: "[message] send a message in a text channel",
  async fn() {
    const message = await sendMessage(tempData.channelID, {
      embed: {
        title: "Discordeno Test",
      },
    });

    // Assertions
    assertExists(message);
    assertEquals(message.embeds[0].title, "Discordeno Test");

    tempData.messageID = message.id;
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[message] get a message in a guild",
  async fn() {
    const message = await getMessage(tempData.channelID, tempData.messageID);

    // Assertions
    assertExists(message);
    assertEquals(message.embeds[0].title, "Discordeno Test");
  },
});

Deno.test({
  name: "[message] pin a message in a channel",
  fn() {
    pin(tempData.channelID, tempData.messageID);
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[message] get pinned message in a channel",
  async fn() {
    const [msg] = await getPins(tempData.channelID);

    // Assertions
    assertExists(msg);
    assertEquals(msg.id, tempData.messageID);
    assertEquals(msg.pinned, true);
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[message] unpin a message",
  fn() {
    unpin(tempData.channelID, tempData.messageID);
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[message] add a reaction to a message",
  fn() {
    // TODO: add tests for a guild emoji ― <:name:id>

    addReaction(tempData.channelID, tempData.messageID, "👍");
  },
  ...defaultTestOptions,
});

// TODO(ayntee): add unit tests for getReactions()

Deno.test({
  name: "[message] remove a reaction to a message",
  fn() {
    removeReaction(tempData.channelID, tempData.messageID, "👍");
  },
  ...defaultTestOptions,
});

// Cleanup

Deno.test({
  name: "[message] delete a message by channel ID",
  fn() {
    deleteMessageByID(tempData.channelID, tempData.messageID);
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[channel] delete a channel in a guild",
  fn() {
    deleteChannel(tempData.guildID, tempData.channelID);
  },
  ...defaultTestOptions,
});

Deno.test({
  name: "[role] delete a role in a guild",
  fn() {
    deleteRole(tempData.guildID, tempData.roleID);
  },
});

Deno.test({
  name: "[guild] delete a guild",
  fn() {
    deleteServer(tempData.guildID);

    // TODO(ayntee): remove this weird shit lol
    // TODO(ayntee): check if the GUILD_DELETE event is fired
    tempData.guildID = "";
    assertEquals(tempData.guildID, "");
  },
  ...defaultTestOptions,
});

// Forcefully exit the Deno process once all tests are done.
Deno.test({
  name: "exit the process forcefully after all the tests are done\n",
  fn() {
    Deno.exit();
  },
  ...defaultTestOptions,
});