From 0f8f036350f7c8b134f824ffe5c40349bfe1f8a8 Mon Sep 17 00:00:00 2001
From: Andrey Kalmykov <nkalmykova@gmail.com>
Date: Wed, 25 Dec 2024 01:43:58 +0600
Subject: [PATCH] atmos.yaml

---
 pkg/config/config.go | 47 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/pkg/config/config.go b/pkg/config/config.go
index df60ff8d53..6660ebf8ce 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"net/url"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -14,6 +15,7 @@ import (
 	"github.com/spf13/viper"
 
 	"github.com/cloudposse/atmos/pkg/schema"
+	"github.com/cloudposse/atmos/pkg/utils"
 	u "github.com/cloudposse/atmos/pkg/utils"
 	"github.com/cloudposse/atmos/pkg/version"
 )
@@ -99,6 +101,8 @@ func InitCliConfig(configAndStacksInfo schema.ConfigAndStacksInfo, processStacks
 	// system dir (`/usr/local/etc/atmos` on Linux, `%LOCALAPPDATA%/atmos` on Windows)
 	// home dir (~/.atmos)
 	// current directory
+	// ENV var ATMOS_CLI_CONFIG_PATH
+	// ENV var ATMOS_REMOTE_CONFIG_URL from GITHUB
 	// ENV vars
 	// Command-line arguments
 
@@ -199,6 +203,18 @@ func InitCliConfig(configAndStacksInfo schema.ConfigAndStacksInfo, processStacks
 		}
 	}
 
+	// Process remote config from a GITHUB URL from the path in ENV var `ATMOS_REMOTE_CONFIG_URL`
+	configFilePath6 := os.Getenv("ATMOS_REMOTE_CONFIG_URL")
+	if len(configFilePath6) > 0 {
+		found, err = processRemoteConfigFile(atmosConfig, configFilePath6, v)
+		if err != nil {
+			return atmosConfig, err
+		}
+		if found {
+			configFound = true
+		}
+	}
+
 	if !configFound {
 		// If `atmos.yaml` not found, use the default config
 		// Set `ATMOS_LOGS_LEVEL` ENV var to "Debug" to see the message about Atmos using the default CLI config
@@ -382,3 +398,34 @@ func processConfigFile(
 
 	return true, nil
 }
+
+// processRemoteConfigFile attempts to download and merge a remote atmos.yaml
+// from a URL. It currently only supports GitHub URLs.
+func processRemoteConfigFile(
+	atmosConfig schema.AtmosConfiguration,
+	rawURL string,
+	v *viper.Viper,
+) (bool, error) {
+	parsedURL, err := url.Parse(rawURL)
+	if err != nil {
+		u.LogWarning(atmosConfig, fmt.Sprintf("Failed to parse remote config URL '%s': %s", rawURL, err.Error()))
+		return false, nil
+	}
+
+	if parsedURL.Scheme != "https" || parsedURL.Host != "github.com" {
+		return false, nil
+	}
+
+	data, err := utils.DownloadFileFromGitHub(rawURL)
+	if err != nil {
+		u.LogWarning(atmosConfig, fmt.Sprintf("Failed to download remote config from GitHub '%s': %s", rawURL, err.Error()))
+		return false, nil
+	}
+
+	err = v.MergeConfig(bytes.NewReader(data))
+	if err != nil {
+		return false, fmt.Errorf("failed to merge remote config from GitHub '%s': %w", rawURL, err)
+	}
+
+	return true, nil
+}