Method generateEnvVarName

pkg/workflow/expression_extraction.go:389–407

generateEnvVarName generates a unique environment variable name for an expression For simple JavaScript property access chains (e.g., "github.event.issue.number"), it generates a pretty name like "GH_AW_GITHUB_EVENT_ISSUE_NUMBER". For complex expressions, it falls back to a hash-based name.

(content string)

// it generates a pretty name like "GH_AW_GITHUB_EVENT_ISSUE_NUMBER".
// For complex expressions, it falls back to a hash-based name.
func (e *ExpressionExtractor) generateEnvVarName(content string) string {
	// Check if the expression is a simple JavaScript property access chain
	if simpleIdentifierRegex.MatchString(content) {
		// Convert dots to underscores and uppercase
		prettyName := strings.ToUpper(strings.ReplaceAll(content, ".", "_"))
		return "GH_AW_" + prettyName
	}

	// Fall back to hash-based name for complex expressions
	// Use SHA256 hash to generate a unique identifier
	hash := sha256.Sum256([]byte(content))
	hashStr := hex.EncodeToString(hash[:])

	// Use first 8 characters of hash for brevity
	shortHash := hashStr[:8]

	// Create environment variable name
	return "GH_AW_EXPR_" + strings.ToUpper(shortHash)
}

// ReplaceExpressionsWithEnvVars replaces all ${{ ... }} expressions in the markdown
// with references to their corresponding environment variables using placeholder format