From e85549fe84c3972e4fe8f7d3cd2b0e66a7dda048 Mon Sep 17 00:00:00 2001
From: Jaakko Koistinen <jk@scriptnet.se>
Date: Tue, 18 Feb 2025 20:16:35 +0100
Subject: [PATCH] initial commit

---
 .gitignore |  7 ++++++
 README.md  | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 go.mod     |  5 ++++
 main.go    | 58 ++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 137 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 go.mod
 create mode 100644 main.go

diff --git a/.gitignore b/.gitignore
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index 0000000..b02a6b9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+/.env
+/go.sum
+/.idea/vcs.xml
+/.idea/modules.xml
+/go-google-space
+/.idea/go-google-space.iml
+.idea/
\ No newline at end of file
diff --git a/README.md b/README.md
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index 0000000..4c31a8b
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+++ b/README.md
@@ -0,0 +1,67 @@
+# Go Google Space Bot
+
+A simple Go application to send messages to a Google Chat space using its webhook URL. 
+
+## Prerequisites
+
+To use this application, ensure you have the following installed:
+1. Go version `1.23` or later.
+2. A properly configured `.env` file with the following variables:
+   - `SPACE_ID`: The ID of the Google Chat space you want to send messages to.
+   - `KEY`: The key provided in your Google Chat webhook URL.
+   - `TOKEN`: The token provided in your Google Chat webhook URL.
+
+For more info on setting up Google Chat webhooks, see [Sending Chat messages using webhooks](https://developers.google.com/chat/how-tos/webhooks).
+
+## Installation
+
+Clone this repository, navigate into the directory, and build the project:
+
+```bash
+git clone <repository-url>
+cd go-google-space
+go build -o go-google-space
+```
+
+## Configuration
+
+Create a `.env` file in the root directory with the following contents:
+
+```dotenv
+SPACE_ID=<your-space-id>
+KEY=<your-key>
+TOKEN=<your-token>
+```
+
+Replace `<your-space-id>`, `<your-key>`, and `<your-token>` with the respective values from your Google Chat webhook URL.
+
+## Usage
+
+Run the built executable, passing the message you want to send as an argument:
+
+```bash
+./go-google-space "Hello, Google Chat!"
+```
+
+## Example Output
+
+When the command runs successfully, the message will appear in your configured Google Chat space.
+
+If any errors occur (e.g., if the `.env` file is missing or the webhook URL configuration is incorrect), error messages will be displayed in the terminal.
+
+## Dependencies
+
+This project uses the following dependencies:
+- [godotenv](https://github.com/joho/godotenv) for loading environment variables from a `.env` file.
+
+To install the dependency, run:
+
+```bash
+go get github.com/joho/godotenv
+```
+
+## License
+
+This project is licensed under the MIT License. See the LICENSE file for details.
+
+---
\ No newline at end of file
diff --git a/go.mod b/go.mod
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index 0000000..1ad4a55
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module go-google-space
+
+go 1.23
+
+require github.com/joho/godotenv v1.5.1
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..6847bb4
--- /dev/null
+++ b/main.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"github.com/joho/godotenv"
+	"io"
+	"net/http"
+	"os"
+)
+
+func main() {
+
+	if len(os.Args) < 2 {
+		fmt.Println("Usage: ./go-google-space <message>")
+		return
+	}
+	userMessage := os.Args[1]
+
+	client := &http.Client{}
+
+	err := godotenv.Load()
+	if err != nil {
+		fmt.Println("Error loading .env file")
+	}
+
+	chatSpaceID := os.Getenv("SPACE_ID")
+	key := os.Getenv("KEY")
+	token := os.Getenv("TOKEN")
+	url := fmt.Sprintf("https://chat.googleapis.com/v1/spaces/%s/messages?key=%s&token=%s", chatSpaceID, key, token)
+
+	message := map[string]string{"text": userMessage}
+	messageJson, err := json.Marshal(message)
+	if err != nil {
+		fmt.Println("Error marshalling message")
+	}
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(messageJson))
+	if err != nil {
+		fmt.Println("Error creating request")
+		return
+	}
+
+	req.Header.Add("Content-Type", "application/json; charset=UTF-8")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		fmt.Println("Error sending request")
+		return
+	}
+	defer func(Body io.ReadCloser) {
+		err := Body.Close()
+		if err != nil {
+			fmt.Println("Error closing response body")
+		}
+	}(resp.Body)
+}