From e60e502514d6bf1ecb23c00e5c56339a80f61441 Mon Sep 17 00:00:00 2001
From: immerrr <immerrr@gmail.com>
Date: Sun, 31 May 2020 12:36:06 +0200
Subject: [PATCH] Use /run/drone/env as default PLUGIN_ENV_FILE, overwrite env
 vars with it

It is required for the plugin to work correctly with Kubernetes runner, where
environment variables are created before the pipeline is finished and thus
initial DRONE_BUILD_STATUS is always "success".

Related discourse topic:

https://discourse.drone.io/t/drone-build-status-always-success-in-kubernetes/6627/2

Similar workaround in drone-slack:

https://github.com/drone-plugins/drone-slack/blob/59d3676b1cb7dbbdd9ca4b677570cd510ed8929a/main.go#L187-L189
---
 main.go | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/main.go b/main.go
index 8371d65..5dee7ff 100644
--- a/main.go
+++ b/main.go
@@ -10,8 +10,12 @@ import (
 
 func main() {
 	// Load env-file if it exists first
-	if env := os.Getenv("PLUGIN_ENV_FILE"); env != "" {
-		godotenv.Load(env)
+	envFile, envFileSet := os.LookupEnv("PLUGIN_ENV_FILE")
+	if !envFileSet {
+		envFile = "/run/drone/env"
+	}
+	if _, err := os.Stat(envFile); err == nil {
+		godotenv.Overload(envFile)
 	}
 
 	app := cli.NewApp()
@@ -84,13 +88,12 @@ func main() {
 			Usage:  "attachment filename(s)",
 			EnvVar: "PLUGIN_ATTACHMENTS",
 		},
-    cli.StringFlag{
+		cli.StringFlag{
 			Name:   "clienthostname",
 			Value:  DefaultClientHostname,
 			Usage:  "smtp client hostname",
 			EnvVar: "EMAIL_CLIENTHOSTNAME,PLUGIN_CLIENTHOSTNAME",
 		},
-		
 
 		// Drone environment
 		// Repo
@@ -388,7 +391,7 @@ func run(c *cli.Context) error {
 			Body:           c.String("template.body"),
 			Attachment:     c.String("attachment"),
 			Attachments:    c.StringSlice("attachments"),
-			ClientHostname:   c.String("clienthostname"),
+			ClientHostname: c.String("clienthostname"),
 		},
 	}