feat: add .env loading from lua hooks

Author: barelyhuman

go.mod

@@ -5,6 +5,7 @@ go 1.18
 require (
 	github.com/barelyhuman/go v0.2.2-0.20230713173609-2ee88bb52634
 	github.com/cjoudrey/gluahttp v0.0.0-20201111170219-25003d9adfa9
+	github.com/joho/godotenv v1.5.1
 	github.com/otiai10/copy v1.9.0
 	github.com/vadv/gopher-lua-libs v0.4.1
 	github.com/yuin/goldmark v1.5.4

go.sum

@@ -41,6 +41,8 @@ github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/jmespath/go-jmespath v0.3.0/go.mod h1:9QtRXoHjLGCJ5IBSaohpXITPlowMeeYCZ7fLUTSywik=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=

lua/alvu/alvu.go

@@ -4,11 +4,13 @@ import (
 	"os"
 	"path"
 
+	dotenv "github.com/joho/godotenv"
 	lua "github.com/yuin/gopher-lua"
 )
 
 var api = map[string]lua.LGFunction{
-	"files": GetFilesIndex,
+	"files":   GetFilesIndex,
+	"get_env": GetEnv,
 }
 
 // Preload adds json to the given Lua state's package.preload table. After it
@@ -81,3 +83,19 @@ func getFilesIndex(pathToIndex string) (paths []string, err error) {
 
 	return
 }
+
+func GetEnv(L *lua.LState) int {
+	// path to get the env from
+	str := L.CheckString(1)
+	// key to get from index
+	key := L.CheckString(2)
+	value := LGetEnv(L, str, key)
+	L.Push(value)
+	return 1
+}
+
+func LGetEnv(L *lua.LState, fromFile string, str string) lua.LString {
+	dotenv.Load(fromFile)
+	val := os.Getenv(str)
+	return lua.LString(val)
+}