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go-keybase-chat-bot

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Official Go Keybase chat bot SDK

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# go-keybase-chat-bot

[![Build Status](https://github.com/keybase/go-keybase-chat-bot/actions/workflows/ci.yml/badge.svg)](https://github.com/keybase/go-keybase-chat-bot/actions)

Write rich bots for Keybase chat in Go.

## Installation

Make sure to [install Keybase](https://keybase.io/download).

```bash
go get -u github.com/keybase/go-keybase-chat-bot/...
```

### Hello world

```go
package main

import (
	"flag"
	"fmt"
	"os"

"github.com/keybase/go-keybase-chat-bot/kbchat"
)

func fail(msg string, args ...interface{}) {
	fmt.Fprintf(os.Stderr, msg+"\n", args...)
	os.Exit(3)
}

func main() {
	var kbLoc string
	var kbc *kbchat.API
	var err error

flag.StringVar(&kbLoc, "keybase", "keybase", "the location of the Keybase app")
	flag.Parse()

if kbc, err = kbchat.Start(kbchat.RunOptions{KeybaseLocation: kbLoc}); err != nil {
		fail("Error creating API: %s", err.Error())
	}

tlfName := fmt.Sprintf("%s,%s", kbc.GetUsername(), "kb_monbot")
	fmt.Printf("saying hello on conversation: %s\n", tlfName)
	if _, err = kbc.SendMessageByTlfName(tlfName, "hello!"); err != nil {
		fail("Error sending message; %s", err.Error())
	}
}

```

### Commands

#### `Start(runOpts RunOptions) (*API, error)`

This must be run first in order to start the Keybase JSON API stdin/stdout interactive mode.

#### `API.SendMessage(channel chat1.ChatChannel, body string) (SendResponse, error)`

send a new message by specifying a channel

#### `API.SendMessageByConvID(convID chat1.ConvIDStr, body string) (SendResponse, error)`

send a new message by specifying a conversation ID

#### `API.SendMessageByTlfName(tlfName string, body string) (SendResponse, error)`

send a new message by specifying a TLF name

#### `API.GetConversations(unreadOnly bool) ([]chat1.ConvSummary, error)`

get all conversations, optionally filtering for unread status

#### `API.GetTextMessages(channel chat1.ChatChannel, unreadOnly bool) ([]chat1.MsgSummary, error)`

get all text messages, optionally filtering for unread status

Reads the messages in a channel. You can read with or without marking as read.

#### `API.ListenForNextTextMessages() NewSubscription`

Returns an object that allows for a bot to enter into a loop calling `NewSubscription.Read`
to receive any new message across all conversations (except the bots own messages). See the following example:

#### `API.InChatSend(channel chat1.ChatChannel, body string) (SendResponse, error)`

send a new message which can contain in-chat-send payments (i.e. `+5XLM@joshblum`) by specifying a channel

#### `API.InChatSendByConvID(convID chat1.ConvIDStr, body string) (SendResponse, error)`

send a new message which can contain in-chat-send payments (i.e. `+5XLM@joshblum`) by specifying a conversation ID

#### `API.InChatSendByTlfName(tlfName string, body string) (SendResponse, error)`

send a new message which can contain in-chat-send payments (i.e. `+5XLM@joshblum`) by specifying a TLF name

```go
	sub, err := kbc.ListenForNewTextMessages()
	if err != nil {
		fail("Error listening: %s", err.Error())
	}

for {
		msg, err := sub.Read()
		if err != nil {
			fail("failed to read message: %s", err.Error())
		}

if msg.Message.Content.TypeName != "text" {
			continue
		}

if msg.Message.Sender.Username == kbc.GetUsername() {
			continue
		}

if _, err = kbc.SendMessage(msg.Message.Channel, msg.Message.Content.Text.Body); err != nil {
			fail("error echo'ing message: %s", err.Error())
		}
	}
```

#### `API.Listen(kbchat.ListenOptions{Wallet: true}) NewSubscription`

Returns the same object as above, but this one will have another channel on it that also gets wallet events. You can get those just like chat messages: `NewSubscription.ReadWallet`. So if you care about both of these types of events, you might run two loops like this:

```go
	sub, err := kbc.Listen(kbchat.ListenOptions{Wallet: true})
	if err != nil {
		fail("Error listening: %s", err.Error())
	}

go func() {
		for {
			payment, err := sub.ReadWallet()
			if err != nil {
				fail("failed to read payment event: %s", err.Error())
			}
			tlfName := fmt.Sprintf("%s,%s", payment.Payment.FromUsername, "kb_monbot")
			msg := fmt.Sprintf("thanks for the %s!", payment.Payment.AmountDescription)
			if _, err = kbc.SendMessageByTlfName(tlfName, msg); err != nil {
				fail("error thanking for payment: %s", err.Error())
			}
		}
	}()

for {
		msg, err := sub.Read()
		if err != nil {
			fail("failed to read message: %s", err.Error())
		}

if msg.Message.Content.TypeName != "text" {
			continue
		}

if msg.Message.Sender.Username == kbc.GetUsername() {
			continue
		}

if _, err = kbc.SendMessage(msg.Message.Channel, msg.Message.Content.Text.Body); err != nil {
			fail("error echo'ing message: %s", err.Error())
		}
	}
```

## TODO:

- attachment handling (posting/getting)
- edit/delete
- many other things!

## Contributions

- welcomed!

### Precommit hooks

We check all git commits with pre-commit hooks generated via
[pre-commit.com](http://pre-commit.com) pre-commit hooks.
To enable use of these pre-commit hooks:

- [Install](http://pre-commit.com/#install) the `pre-commit` utility. For some common cases:
  - `pip install pre-commit`
  - `brew install pre-commit`
- Remove any existing pre-commit hooks via `rm .git/hooks/pre-commit`
- Configure via `pre-commit install`

### Types

Most of the types the bot uses are generated from definitions defined in the [`protocol/`](https://github.com/keybase/client/tree/master/protocol) directory inside the Keybase client repo. This ensures that the types that the bot uses are consistent across bots and always up to date with the output of the API.

To build the types for the Go bot, you'll need to clone the `client` repo in the same parent directory that contains `go-keybase-chat-bot/`.

```shell
git clone https://github.com/keybase/client
```

and install the necessary dependencies for compiling the protocol files. This requires [node.js](https://nodejs.org) and [Yarn](https://yarnpkg.com).

```shell
cd client/protocol
yarn install
```

Then you can generate the types by using the provided Makefile in this Go bot repo. Note that [goimports](https://godoc.org/golang.org/x/tools/cmd/goimports) is required to generate the types.

```shell
go get golang.org/x/tools/cmd/goimports # if you don't have goimports installed
cd ../../go-keybase-chat-bot
make
```

You can optionally specify a directory to the client protocol when making the types if `client` and `go-keybase-chat-bot` are not in the same directory.

```shell
make PROTOCOL_PATH=path/to/client/protocol
```

Should you need to remove all the types for some reason, you can run `make clean`.

### Testing

You'll need to have a few demo bot accounts and teams to run the suite of tests. Make a copy of `kbchat/test_config.example.yaml`, rename it to `kbchat/test_config.yaml`, and replace the example data with your own. Tests can then be run inside of `kbchat/` with `go test`.

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