import { PluginOptions } from "knub";
import { ConfigSchema, defaultStarboardOpts, StarboardPluginType } from "./types";
import { zeppelinGuildPlugin } from "../ZeppelinPluginBlueprint";
import { trimPluginDescription } from "../../utils";
import { GuildSavedMessages } from "../../data/GuildSavedMessages";
import { GuildStarboardMessages } from "../../data/GuildStarboardMessages";
import { GuildStarboardReactions } from "../../data/GuildStarboardReactions";
import { onMessageDelete } from "./util/onMessageDelete";
import { MigratePinsCmd } from "./commands/MigratePinsCmd";
import { StarboardReactionAddEvt } from "./events/StarboardReactionAddEvt";
import { StarboardReactionRemoveEvt, StarboardReactionRemoveAllEvt } from "./events/StarboardReactionRemoveEvts";

const defaultOptions: PluginOptions<StarboardPluginType> = {
  config: {
    can_migrate: false,
    boards: {},
  },

  overrides: [
    {
      level: ">=100",
      config: {
        can_migrate: true,
      },
    },
  ],
};

export const StarboardPlugin = zeppelinGuildPlugin<StarboardPluginType>()("starboard", {
  showInDocs: true,

  configSchema: ConfigSchema,
  defaultOptions,

  info: {
    prettyName: "Starboard",
    description: trimPluginDescription(`
      This plugin allows you to set up starboards on your server. Starboards are like user voted pins where messages with enough reactions get immortalized on a "starboard" channel.
    `),
    configurationGuide: trimPluginDescription(`
      ### Note on emojis
      To specify emoji in the config, you need to use the emoji's "raw form".
      To obtain this, post the emoji with a backslash in front of it.
      
      - Example with a default emoji: "\:star:" => "⭐"
      - Example with a custom emoji: "\:mrvnSmile:" => "<:mrvnSmile:543000534102310933>"

      ### Basic starboard
      Any message on the server that gets 5 star reactions will be posted into the starboard channel (604342689038729226).
      
      ~~~yml
      starboard:
        config:
          boards:
            basic:
              channel_id: "604342689038729226"
              stars_required: 5
      ~~~
      
      ### Basic starboard with custom color
      Any message on the server that gets 5 star reactions will be posted into the starboard channel (604342689038729226), with the given color (0x87CEEB).
      
      ~~~yml
      starboard:
        config:
          boards:
            basic:
              channel_id: "604342689038729226"
              stars_required: 5
              color: 0x87CEEB
      ~~~
      
      ### Custom star emoji
      This is identical to the basic starboard above, but accepts two emoji: the regular star and a custom :mrvnSmile: emoji
      
      ~~~yml
      starboard:
        config:
          boards:
            basic:
              channel_id: "604342689038729226"
              star_emoji: ["⭐", "<:mrvnSmile:543000534102310933>"]
              stars_required: 5
      ~~~
      
      ### Limit starboard to a specific channel
      This is identical to the basic starboard above, but only works from a specific channel (473087035574321152).
      
      ~~~yml
      starboard:
        config:
          boards:
            basic:
              enabled: false # The starboard starts disabled and is then enabled in a channel override below
              channel_id: "604342689038729226"
              stars_required: 5
        overrides:
          - channel: "473087035574321152"
            config:
              boards:
                basic:
                  enabled: true
      ~~~

      ### Limit starboard to a specific level (and above)
      This is identical to the basic starboard above, but only works for a specific level (>=50).
      
      ~~~yml
      starboard:
        config:
          boards:
            levelonly:
              enabled: false # The starboard starts disabled and is then enabled in a level override below
              channel_id: "604342689038729226"
              stars_required: 1
        overrides:
          - level: ">=50"
            config:
              boards:
                levelonly:
                  enabled: true
      ~~~
    `),
  },

  configPreprocessor(options) {
    if (options.config?.boards) {
      for (const [name, opts] of Object.entries(options.config.boards)) {
        options.config.boards[name] = Object.assign({}, defaultStarboardOpts, options.config.boards[name]);
      }
    }

    return options;
  },

  // prettier-ignore
  commands: [
      MigratePinsCmd,
  ],

  // prettier-ignore
  events: [
      StarboardReactionAddEvt,
      StarboardReactionRemoveEvt,
      StarboardReactionRemoveAllEvt,
  ],

  onLoad(pluginData) {
    const { state, guild } = pluginData;

    state.savedMessages = GuildSavedMessages.getGuildInstance(guild.id);
    state.starboardMessages = GuildStarboardMessages.getGuildInstance(guild.id);
    state.starboardReactions = GuildStarboardReactions.getGuildInstance(guild.id);

    state.onMessageDeleteFn = msg => onMessageDelete(pluginData, msg);
    state.savedMessages.events.on("delete", state.onMessageDeleteFn);
  },

  onUnload(pluginData) {
    pluginData.state.savedMessages.events.off("delete", pluginData.state.onMessageDeleteFn);
  },
});