exports.Package = require('../../package.json');

/**
 * Options for a Client.
 * @typedef {Object} ClientOptions
 * @property {string} [apiRequestMethod='sequential'] One of `sequential` or `burst`. The sequential handler executes
 * all requests in the order they are triggered, whereas the burst handler runs multiple in parallel, and doesn't
 * provide the guarantee of any particular order. Burst mode is more likely to hit a 429 ratelimit error by its nature,
 * and is therefore slightly riskier to use.
 * @property {number} [shardId=0] ID of the shard to run
 * @property {number} [shardCount=0] Total number of shards
 * @property {number} [messageCacheMaxSize=200] Maximum number of messages to cache per channel
 * (-1 or Infinity for unlimited - don't do this without message sweeping, otherwise memory usage will climb
 * indefinitely)
 * @property {number} [messageCacheLifetime=0] How long a message should stay in the cache until it is considered
 * sweepable (in seconds, 0 for forever)
 * @property {number} [messageSweepInterval=0] How frequently to remove messages from the cache that are older than
 * the message cache lifetime (in seconds, 0 for never)
 * @property {boolean} [fetchAllMembers=false] Whether to cache all guild members and users upon startup, as well as
 * upon joining a guild (should be avoided whenever possible)
 * @property {boolean} [disableEveryone=false] Default value for {@link MessageOptions#disableEveryone}
 * @property {boolean} [sync=false] Whether to periodically sync guilds (for user accounts)
 * @property {number} [restWsBridgeTimeout=5000] Maximum time permitted between REST responses and their
 * corresponding websocket events
 * @property {number} [restTimeOffset=500] Extra time in millseconds to wait before continuing to make REST
 * requests (higher values will reduce rate-limiting errors on bad connections)
 * @property {WSEventType[]} [disabledEvents] An array of disabled websocket events. Events in this array will not be
 * processed, potentially resulting in performance improvements for larger bots. Only disable events you are
 * 100% certain you don't need, as many are important, but not obviously so. The safest one to disable with the
 * most impact is typically `TYPING_START`.
 * @property {WebsocketOptions} [ws] Options for the websocket
 */
exports.DefaultOptions = {
  apiRequestMethod: 'sequential',
  shardId: 0,
  shardCount: 0,
  messageCacheMaxSize: 200,
  messageCacheLifetime: 0,
  messageSweepInterval: 0,
  fetchAllMembers: false,
  disableEveryone: false,
  sync: false,
  restWsBridgeTimeout: 5000,
  disabledEvents: [],
  restTimeOffset: 500,

  /**
   * Websocket options (these are left as snake_case to match the API)
   * @typedef {Object} WebsocketOptions
   * @property {number} [large_threshold=250] Number of members in a guild to be considered large
   * @property {boolean} [compress=true] Whether to compress data sent on the connection
   * (defaults to `false` for browsers)
   */
  ws: {
    large_threshold: 250,
    compress: require('os').platform() !== 'browser',
    properties: {
      $os: process ? process.platform : 'discord.js',
      $browser: 'discord.js',
      $device: 'discord.js',
      $referrer: '',
      $referring_domain: '',
    },
    version: 6,
  },
  http: {
    version: 6,
    host: 'https://discordapp.com',
    cdn: 'https://cdn.discordapp.com',
  },
};

exports.Errors = {
  NO_TOKEN: 'Request to use token, but token was unavailable to the client.',
  NO_BOT_ACCOUNT: 'Only bot accounts are able to make use of this feature.',
  NO_USER_ACCOUNT: 'Only user accounts are able to make use of this feature.',
  BAD_WS_MESSAGE: 'A bad message was received from the websocket; either bad compression, or not JSON.',
  TOOK_TOO_LONG: 'Something took too long to do.',
  NOT_A_PERMISSION: 'Invalid permission string or number.',
  INVALID_RATE_LIMIT_METHOD: 'Unknown rate limiting method.',
  BAD_LOGIN: 'Incorrect login details were provided.',
  INVALID_SHARD: 'Invalid shard settings were provided.',
  SHARDING_REQUIRED: 'This session would have handled too many guilds - Sharding is required.',
  INVALID_TOKEN: 'An invalid token was provided.',
};

const Endpoints = exports.Endpoints = {
  User: userID => {
    if (userID.id) userID = userID.id;
    const base = `/users/${userID}`;
    return {
      toString: () => base,
      channels: `${base}/channels`,
      profile: `${base}/profile`,
      relationships: `${base}/relationships`,
      settings: `${base}/settings`,
      Relationship: uID => `${base}/relationships/${uID}`,
      Guild: guildID => `${base}/guilds/${guildID}`,
      Note: id => `${base}/notes/${id}`,
      Mentions: (limit, roles, everyone, guildID) =>
        `${base}/mentions?limit=${limit}&roles=${roles}&everyone=${everyone}${guildID ? `&guild_id=${guildID}` : ''}`,
      Avatar: (root, hash) => {
        if (userID === '1') return hash;
        return Endpoints.CDN(root).Avatar(userID, hash);
      },
    };
  },
  guilds: '/guilds',
  Guild: guildID => {
    if (guildID.id) guildID = guildID.id;
    const base = `/guilds/${guildID}`;
    return {
      toString: () => base,
      prune: `${base}/prune`,
      embed: `${base}/embed`,
      bans: `${base}/bans`,
      integrations: `${base}/integrations`,
      members: `${base}/members`,
      channels: `${base}/channels`,
      invites: `${base}/invites`,
      roles: `${base}/roles`,
      emojis: `${base}/emojis`,
      search: `${base}/messages/search`,
      voiceRegions: `${base}/regions`,
      webhooks: `${base}/webhooks`,
      ack: `${base}/ack`,
      settings: `${base}/settings`,
      Emoji: emojiID => `${base}/emojis/${emojiID}`,
      Icon: (root, hash) => Endpoints.CDN(root).Icon(guildID, hash),
      Splash: (root, hash) => Endpoints.CDN(root).Splash(guildID, hash),
      Role: roleID => `${base}/roles/${roleID}`,
      Member: memberID => {
        if (memberID.id) memberID = memberID.id;
        const mbase = `${base}/members/${memberID}`;
        return {
          toString: () => mbase,
          Role: roleID => `${mbase}/roles/${roleID}`,
          nickname: `${base}/members/@me/nick`,
        };
      },
    };
  },
  channels: '/channels',
  Channel: channelID => {
    if (channelID.id) channelID = channelID.id;
    const base = `/channels/${channelID}`;
    return {
      toString: () => base,
      messages: {
        toString: () => `${base}/messages`,
        bulkDelete: `${base}/messages/bulk-delete`,
      },
      invites: `${base}/invites`,
      typing: `${base}/typing`,
      permissions: `${base}/permissions`,
      webhooks: `${base}/webhooks`,
      search: `${base}/search`,
      ack: `${base}/ack`,
      pins: `${base}/pins`,
      Pin: messageID => `${base}/pins/${messageID}`,
      Recipient: recipientID => `${base}/recipients/${recipientID}`,
      Message: messageID => {
        if (messageID.id) messageID = messageID.id;
        const mbase = `${base}/messages/${messageID}`;
        return {
          toString: () => mbase,
          reactions: `${mbase}/reactions`,
          ack: `${mbase}/ack`,
          Reaction: (emoji, limit) => {
            const rbase = `${mbase}/reactions/${emoji}${limit ? `?limit=${limit}` : ''}`;
            return {
              toString: () => rbase,
              User: userID => `${rbase}/${userID}`,
            };
          },
        };
      },
    };
  },
  Message: m => exports.Endpoints.Channel(m.channel).Message(m),
  Member: m => exports.Endpoints.Guild(m.guild).Member(m),
  CDN(root) {
    return {
      Emoji: emojiID => `${root}/emojis/$${emojiID}.png`,
      Asset: name => `${root}/assets/${name}`,
      Avatar: (userID, hash) => `${root}/avatars/${userID}/${hash}.${hash.startsWith('a_') ? 'gif' : 'png'}?size=2048`,
      Icon: (guildID, hash) => `${root}/icons/${guildID}/${hash}.jpg`,
      Splash: (guildID, hash) => `${root}/splashes/${guildID}/${hash}.jpg`,
    };
  },
  OAUTH2: {
    Application: appID => {
      const base = `/oauth2/applications/${appID}`;
      return {
        toString: () => base,
        reset: `${base}/reset`,
      };
    },
    App: appID => `/oauth2/authorize?client_id=${appID}`,
  },
  login: '/auth/login',
  logout: '/auth/logout',
  voiceRegions: '/voice/regions',
  gateway: {
    toString: () => '/gateway',
    bot: '/gateway/bot',
  },
  Invite: inviteID => `/invite/${inviteID}`,
  inviteLink: id => `https://discord.gg/${id}`,
  Webhook: (webhookID, token) => `/webhooks/${webhookID}${token ? `/${token}` : ''}`,
};


/**
 * The current status of the client. Here are the available statuses:
 * - READY
 * - CONNECTING
 * - RECONNECTING
 * - IDLE
 * - NEARLY
 * - DISCONNECTED
 * @typedef {number} Status
 */
exports.Status = {
  READY: 0,
  CONNECTING: 1,
  RECONNECTING: 2,
  IDLE: 3,
  NEARLY: 4,
  DISCONNECTED: 5,
};

/**
 * The current status of a voice connection. Here are the available statuses:
 * - CONNECTED
 * - CONNECTING
 * - AUTHENTICATING
 * - RECONNECTING
 * - DISCONNECTED
 * @typedef {number} VoiceStatus
 */
exports.VoiceStatus = {
  CONNECTED: 0,
  CONNECTING: 1,
  AUTHENTICATING: 2,
  RECONNECTING: 3,
  DISCONNECTED: 4,
};

exports.ChannelTypes = {
  TEXT: 0,
  DM: 1,
  VOICE: 2,
  GROUP_DM: 3,
};

exports.OPCodes = {
  DISPATCH: 0,
  HEARTBEAT: 1,
  IDENTIFY: 2,
  STATUS_UPDATE: 3,
  VOICE_STATE_UPDATE: 4,
  VOICE_GUILD_PING: 5,
  RESUME: 6,
  RECONNECT: 7,
  REQUEST_GUILD_MEMBERS: 8,
  INVALID_SESSION: 9,
  HELLO: 10,
  HEARTBEAT_ACK: 11,
};

exports.VoiceOPCodes = {
  IDENTIFY: 0,
  SELECT_PROTOCOL: 1,
  READY: 2,
  HEARTBEAT: 3,
  SESSION_DESCRIPTION: 4,
  SPEAKING: 5,
};

exports.Events = {
  READY: 'ready',
  GUILD_CREATE: 'guildCreate',
  GUILD_DELETE: 'guildDelete',
  GUILD_UPDATE: 'guildUpdate',
  GUILD_UNAVAILABLE: 'guildUnavailable',
  GUILD_AVAILABLE: 'guildAvailable',
  GUILD_MEMBER_ADD: 'guildMemberAdd',
  GUILD_MEMBER_REMOVE: 'guildMemberRemove',
  GUILD_MEMBER_UPDATE: 'guildMemberUpdate',
  GUILD_MEMBER_AVAILABLE: 'guildMemberAvailable',
  GUILD_MEMBER_SPEAKING: 'guildMemberSpeaking',
  GUILD_MEMBERS_CHUNK: 'guildMembersChunk',
  GUILD_ROLE_CREATE: 'roleCreate',
  GUILD_ROLE_DELETE: 'roleDelete',
  GUILD_ROLE_UPDATE: 'roleUpdate',
  GUILD_EMOJI_CREATE: 'emojiCreate',
  GUILD_EMOJI_DELETE: 'emojiDelete',
  GUILD_EMOJI_UPDATE: 'emojiUpdate',
  GUILD_BAN_ADD: 'guildBanAdd',
  GUILD_BAN_REMOVE: 'guildBanRemove',
  CHANNEL_CREATE: 'channelCreate',
  CHANNEL_DELETE: 'channelDelete',
  CHANNEL_UPDATE: 'channelUpdate',
  CHANNEL_PINS_UPDATE: 'channelPinsUpdate',
  MESSAGE_CREATE: 'message',
  MESSAGE_DELETE: 'messageDelete',
  MESSAGE_UPDATE: 'messageUpdate',
  MESSAGE_BULK_DELETE: 'messageDeleteBulk',
  MESSAGE_REACTION_ADD: 'messageReactionAdd',
  MESSAGE_REACTION_REMOVE: 'messageReactionRemove',
  MESSAGE_REACTION_REMOVE_ALL: 'messageReactionRemoveAll',
  USER_UPDATE: 'userUpdate',
  USER_NOTE_UPDATE: 'userNoteUpdate',
  USER_SETTINGS_UPDATE: 'clientUserSettingsUpdate',
  PRESENCE_UPDATE: 'presenceUpdate',
  VOICE_STATE_UPDATE: 'voiceStateUpdate',
  TYPING_START: 'typingStart',
  TYPING_STOP: 'typingStop',
  DISCONNECT: 'disconnect',
  RECONNECTING: 'reconnecting',
  ERROR: 'error',
  WARN: 'warn',
  DEBUG: 'debug',
};

/**
 * The type of a websocket message event, e.g. `MESSAGE_CREATE`. Here are the available events:
 * - READY
 * - RESUMED
 * - GUILD_SYNC
 * - GUILD_CREATE
 * - GUILD_DELETE
 * - GUILD_UPDATE
 * - GUILD_MEMBER_ADD
 * - GUILD_MEMBER_REMOVE
 * - GUILD_MEMBER_UPDATE
 * - GUILD_MEMBERS_CHUNK
 * - GUILD_ROLE_CREATE
 * - GUILD_ROLE_DELETE
 * - GUILD_ROLE_UPDATE
 * - GUILD_BAN_ADD
 * - GUILD_BAN_REMOVE
 * - CHANNEL_CREATE
 * - CHANNEL_DELETE
 * - CHANNEL_UPDATE
 * - CHANNEL_PINS_UPDATE
 * - MESSAGE_CREATE
 * - MESSAGE_DELETE
 * - MESSAGE_UPDATE
 * - MESSAGE_DELETE_BULK
 * - MESSAGE_REACTION_ADD
 * - MESSAGE_REACTION_REMOVE
 * - MESSAGE_REACTION_REMOVE_ALL
 * - USER_UPDATE
 * - USER_NOTE_UPDATE
 * - USER_SETTINGS_UPDATE
 * - PRESENCE_UPDATE
 * - VOICE_STATE_UPDATE
 * - TYPING_START
 * - VOICE_SERVER_UPDATE
 * - RELATIONSHIP_ADD
 * - RELATIONSHIP_REMOVE
 * @typedef {string} WSEventType
 */
exports.WSEvents = {
  READY: 'READY',
  RESUMED: 'RESUMED',
  GUILD_SYNC: 'GUILD_SYNC',
  GUILD_CREATE: 'GUILD_CREATE',
  GUILD_DELETE: 'GUILD_DELETE',
  GUILD_UPDATE: 'GUILD_UPDATE',
  GUILD_MEMBER_ADD: 'GUILD_MEMBER_ADD',
  GUILD_MEMBER_REMOVE: 'GUILD_MEMBER_REMOVE',
  GUILD_MEMBER_UPDATE: 'GUILD_MEMBER_UPDATE',
  GUILD_MEMBERS_CHUNK: 'GUILD_MEMBERS_CHUNK',
  GUILD_ROLE_CREATE: 'GUILD_ROLE_CREATE',
  GUILD_ROLE_DELETE: 'GUILD_ROLE_DELETE',
  GUILD_ROLE_UPDATE: 'GUILD_ROLE_UPDATE',
  GUILD_BAN_ADD: 'GUILD_BAN_ADD',
  GUILD_BAN_REMOVE: 'GUILD_BAN_REMOVE',
  GUILD_EMOJIS_UPDATE: 'GUILD_EMOJIS_UPDATE',
  CHANNEL_CREATE: 'CHANNEL_CREATE',
  CHANNEL_DELETE: 'CHANNEL_DELETE',
  CHANNEL_UPDATE: 'CHANNEL_UPDATE',
  CHANNEL_PINS_UPDATE: 'CHANNEL_PINS_UPDATE',
  MESSAGE_CREATE: 'MESSAGE_CREATE',
  MESSAGE_DELETE: 'MESSAGE_DELETE',
  MESSAGE_UPDATE: 'MESSAGE_UPDATE',
  MESSAGE_DELETE_BULK: 'MESSAGE_DELETE_BULK',
  MESSAGE_REACTION_ADD: 'MESSAGE_REACTION_ADD',
  MESSAGE_REACTION_REMOVE: 'MESSAGE_REACTION_REMOVE',
  MESSAGE_REACTION_REMOVE_ALL: 'MESSAGE_REACTION_REMOVE_ALL',
  USER_UPDATE: 'USER_UPDATE',
  USER_NOTE_UPDATE: 'USER_NOTE_UPDATE',
  USER_SETTINGS_UPDATE: 'USER_SETTINGS_UPDATE',
  PRESENCE_UPDATE: 'PRESENCE_UPDATE',
  VOICE_STATE_UPDATE: 'VOICE_STATE_UPDATE',
  TYPING_START: 'TYPING_START',
  VOICE_SERVER_UPDATE: 'VOICE_SERVER_UPDATE',
  RELATIONSHIP_ADD: 'RELATIONSHIP_ADD',
  RELATIONSHIP_REMOVE: 'RELATIONSHIP_REMOVE',
};

exports.MessageTypes = [
  'DEFAULT',
  'RECIPIENT_ADD',
  'RECIPIENT_REMOVE',
  'CALL',
  'CHANNEL_NAME_CHANGE',
  'CHANNEL_ICON_CHANGE',
  'PINS_ADD',
  'GUILD_MEMBER_JOIN',
];

exports.DefaultAvatars = {
  BLURPLE: '6debd47ed13483642cf09e832ed0bc1b',
  GREY: '322c936a8c8be1b803cd94861bdfa868',
  GREEN: 'dd4dbc0016779df1378e7812eabaa04d',
  ORANGE: '0e291f67c9274a1abdddeb3fd919cbaa',
  RED: '1cbd08c76f8af6dddce02c5138971129',
};

exports.ExplicitContentFilterTypes = [
  'DISABLED',
  'NON_FRIENDS',
  'FRIENDS_AND_NON_FRIENDS',
];

exports.UserSettingsMap = {
  /**
   * Automatically convert emoticons in your messages to emoji.
   * For example, when you type `:-)` Discord will convert it to 😃
   * @name ClientUserSettings#convertEmoticons
   * @type {boolean}
   */
  convert_emoticons: 'convertEmoticons',

  /**
   * If new guilds should automatically disable DMs between you and its members
   * @name ClientUserSettings#defaultGuildsRestricted
   * @type {boolean}
   */
  default_guilds_restricted: 'defaultGuildsRestricted',

  /**
   * Automatically detect accounts from services like Steam and Blizzard when you open the Discord client
   * @name ClientUserSettings#detectPlatformAccounts
   * @type {boolean}
   */
  detect_platform_accounts: 'detectPlatformAccounts',

  /**
   * Developer Mode exposes context menu items helpful for people writing bots using the Discord API
   * @name ClientUserSettings#developerMode
   * @type {boolean}
   */
  developer_mode: 'developerMode',

  /**
   * Allow playback and usage of the `/tts` command
   * @name ClientUserSettings#enableTTSCommand
   * @type {boolean}
   */
  enable_tts_command: 'enableTTSCommand',

  /**
   * The theme of the client. Either `light` or `dark`
   * @name ClientUserSettings#theme
   * @type {String}
   */
  theme: 'theme',

  /**
   * Last status set in the client
   * @name ClientUserSettings#status
   * @type {PresenceStatus}
   */
  status: 'status',

  /**
   * Display currently running game as status message
   * @name ClientUserSettings#showCurrentGame
   * @type {boolean}
   */
  show_current_game: 'showCurrentGame',

  /**
   * Display images, videos, and lolcats when uploaded directly to Discord
   * @name ClientUserSettings#inlineAttachmentMedia
   * @type {boolean}
   */
  inline_attachment_media: 'inlineAttachmentMedia',

  /**
   * Display images, videos, and lolcats when uploaded posted as links in chat
   * @name ClientUserSettings#inlineEmbedMedia
   * @type {boolean}
   */
  inline_embed_media: 'inlineEmbedMedia',

  /**
   * Language the Discord client will use, as an RFC 3066 language identifier
   * @name ClientUserSettings#locale
   * @type {string}
   */
  locale: 'locale',

  /**
   * Display messages in compact mode
   * @name ClientUserSettings#messageDisplayCompact
   * @type {boolean}
   */
  message_display_compact: 'messageDisplayCompact',

  /**
   * Show emoji reactions on messages
   * @name ClientUserSettings#renderReactions
   * @type {boolean}
   */
  render_reactions: 'renderReactions',

  /**
   * Array of snowflake IDs for guilds, in the order they appear in the Discord client
   * @name ClientUserSettings#guildPositions
   * @type {Snowflake[]}
   */
  guild_positions: 'guildPositions',

  /**
   * Array of snowflake IDs for guilds which you will not recieve DMs from
   * @name ClientUserSettings#restrictedGuilds
   * @type {Snowflake[]}
   */
  restricted_guilds: 'restrictedGuilds',

  explicit_content_filter: function explicitContentFilter(type) { // eslint-disable-line func-name-matching
    /**
     * Safe direct messaging; force people's messages with images to be scanned before they are sent to you
     * one of `DISABLED`, `NON_FRIENDS`, `FRIENDS_AND_NON_FRIENDS`
     * @name ClientUserSettings#explicitContentFilter
     * @type {string}
     */
    return exports.ExplicitContentFilterTypes[type];
  },
  friend_source_flags: function friendSources(flags) { // eslint-disable-line func-name-matching
    /**
     * Who can add you as a friend
     * @name ClientUserSettings#friendSources
     * @type {Object}
     * @property {boolean} all Mutual friends and mutual guilds
     * @property {boolean} mutualGuilds Only mutual guilds
     * @property {boolean} mutualFriends Only mutual friends
     */
    return {
      all: flags.all || false,
      mutualGuilds: flags.all ? true : flags.mutual_guilds || false,
      mutualFriends: flags.all ? true : flags.mutualFriends || false,
    };
  },
};

exports.Colors = {
  DEFAULT: 0x000000,
  AQUA: 0x1ABC9C,
  GREEN: 0x2ECC71,
  BLUE: 0x3498DB,
  PURPLE: 0x9B59B6,
  GOLD: 0xF1C40F,
  ORANGE: 0xE67E22,
  RED: 0xE74C3C,
  GREY: 0x95A5A6,
  NAVY: 0x34495E,
  DARK_AQUA: 0x11806A,
  DARK_GREEN: 0x1F8B4C,
  DARK_BLUE: 0x206694,
  DARK_PURPLE: 0x71368A,
  DARK_GOLD: 0xC27C0E,
  DARK_ORANGE: 0xA84300,
  DARK_RED: 0x992D22,
  DARK_GREY: 0x979C9F,
  DARKER_GREY: 0x7F8C8D,
  LIGHT_GREY: 0xBCC0C0,
  DARK_NAVY: 0x2C3E50,
  BLURPLE: 0x7289DA,
  GREYPLE: 0x99AAB5,
  DARK_BUT_NOT_BLACK: 0x2C2F33,
  NOT_QUITE_BLACK: 0x23272A,
};