83 lines
3.6 KiB
Markdown
83 lines
3.6 KiB
Markdown
# 🧩 Plugins
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The bot supports loading external plugins.
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## Specifying plugins to load
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Plugins can be loaded either from local files or NPM. Examples:
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```ini
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# Local file
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plugins[] = ./path/to/plugin.js
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# NPM package
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plugins[] = npm:some-plugin-package
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```
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Paths to local files are always relative to the bot's folder.
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NPM plugins are automatically installed on bot start-up.
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## Creating a plugin
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Plugins are simply `.js` files that export a function that gets called when the plugin is loaded.
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For details about the function arguments, see [Plugin API](#plugin-api) below.
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### Example plugin
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This example adds a command `!mycommand` that replies with `"Reply from my custom plugin!"` when the command is used inside a modmail inbox thread channel.
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```js
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module.exports = function({ bot, knex, config, commands }) {
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commands.addInboxThreadCommand('mycommand', [], (msg, args, thread) => {
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thread.replyToUser(msg.member, 'Reply from my custom plugin!');
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});
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}
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```
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(Note the use of [object destructuring](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment#Unpacking_fields_from_objects_passed_as_function_parameter) in the function parameters)
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### Example of a custom attachment storage type
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This example adds a custom type for the `attachmentStorage` option called `"original"` that simply returns the original attachment URL without rehosting it in any way.
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```js
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module.exports = function({ attachments }) {
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attachments.addStorageType('original', attachment => {
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return { url: attachment.url };
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});
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};
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```
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To use this custom attachment storage type, you would set the `attachmentStorage` config option to `"original"`.
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### Example of a custom log storage type
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This example adds a custom type for the `logStorage` option called `"pastebin"` that uploads logs to Pastebin.
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```js
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module.exports = function({ logs, formatters }) {
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logs.addStorageType('pastebin', {
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async save(thread, threadMessages) {
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const formatLogResult = await formatters.formatLog(thread, threadMessages);
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const pastebinUrl = await saveToPastebin(formatLogResult); // saveToPastebin is an example function that returns the pastebin URL for the saved log
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return { url: pastebinUrl };
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},
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getUrl(thread) {
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return thread.log_storage_data.url;
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}
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});
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};
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```
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### Plugin API
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The first and only argument to the plugin function is an object with the following properties:
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| Property | Description |
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| -------- | ----------- |
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| `bot` | [Eris Client instance](https://abal.moe/Eris/docs/Client) |
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| `knex` | [Knex database object](https://knexjs.org/#Builder) |
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| `config` | The loaded config |
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| `commands` | An object with functions to add and manage commands |
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| `attachments` | An object with functions to save attachments and manage attachment storage types |
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| `logs` | An object with functions to get attachment URLs/files and manage log storage types |
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| `hooks` | An object with functions to add *hooks* that are called at specific times, e.g. before a new thread is created |
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| `formats` | An object with functions that allow you to replace the default functions used for formatting messages and logs |
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| `webserver` | An [Express Application object](https://expressjs.com/en/api.html#app) that functions as the bot's web server |
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See the auto-generated [Plugin API](plugin-api.md) page for details.
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## Plugin API stability
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Bot releases may contain changes to the plugin API. Make sure to check the [CHANGELOG](../CHANGELOG.md) before upgrading!
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Please send any feature suggestions to the [issue tracker](https://github.com/Dragory/modmailbot/issues)!
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