96 lines
2.1 KiB
Go
96 lines
2.1 KiB
Go
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package config
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import (
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"bufio"
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"os"
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"path/filepath"
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"strings"
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)
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// loadDotEnv loads the monorepo-root .env into the process environment.
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// Existing variables (including empty ones set by tests) are never overridden.
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// Missing file is a no-op — production typically injects env without a file.
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func loadDotEnv() {
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if path := strings.TrimSpace(os.Getenv("DOTENV_PATH")); path != "" {
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_ = applyEnvFile(path)
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return
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}
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if root, ok := findMonorepoRoot(); ok {
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_ = applyEnvFile(filepath.Join(root, ".env"))
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}
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}
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func findMonorepoRoot() (string, bool) {
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cwd, err := os.Getwd()
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if err != nil {
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return "", false
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}
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dir := cwd
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for {
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if isMonorepoRoot(dir) {
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return dir, true
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}
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parent := filepath.Dir(dir)
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if parent == dir {
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return "", false
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}
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dir = parent
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}
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}
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func isMonorepoRoot(dir string) bool {
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api := filepath.Join(dir, "apps", "api")
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web := filepath.Join(dir, "apps", "web")
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if st, err := os.Stat(api); err != nil || !st.IsDir() {
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return false
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}
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if st, err := os.Stat(web); err != nil || !st.IsDir() {
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return false
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}
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// Prefer package.json workspaces marker when present.
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if _, err := os.Stat(filepath.Join(dir, "package.json")); err == nil {
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return true
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}
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return true
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}
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func applyEnvFile(path string) error {
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f, err := os.Open(path)
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if err != nil {
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return err
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}
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defer f.Close()
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sc := bufio.NewScanner(f)
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// Allow long values (keys, DSNs).
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sc.Buffer(make([]byte, 0, 64*1024), 1024*1024)
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for sc.Scan() {
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line := strings.TrimSpace(sc.Text())
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if line == "" || strings.HasPrefix(line, "#") {
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continue
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}
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if strings.HasPrefix(line, "export ") {
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line = strings.TrimSpace(strings.TrimPrefix(line, "export "))
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}
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key, val, ok := strings.Cut(line, "=")
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if !ok {
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continue
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}
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key = strings.TrimSpace(key)
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if key == "" {
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continue
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}
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if _, exists := os.LookupEnv(key); exists {
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continue
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}
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val = strings.TrimSpace(val)
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if len(val) >= 2 {
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if (val[0] == '"' && val[len(val)-1] == '"') || (val[0] == '\'' && val[len(val)-1] == '\'') {
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val = val[1 : len(val)-1]
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}
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}
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_ = os.Setenv(key, val)
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}
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return sc.Err()
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}
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