let env_setup = import "./fragments/environment-setup.ncl" in
{
  name = "conditional_demo",
  description = "Complete demonstration of conditional field visibility",
  elements =
    [
      # COMPARISON OPERATORS
      { type = "select", name = "database_driver", prompt = "Select database driver", required = true, options = [
          { value = "sqlite", label = "SQLite (embedded)" },
          { value = "mysql", label = "MySQL" },
          { value = "postgresql", label = "PostgreSQL" },
        ]
      },

      # Equality (==)
      { type = "text", name = "mysql_config", prompt = "MySQL connection string", placeholder = "mysql://localhost:3306/db", when = "database_driver == mysql" },

      # Inequality (!=)
      { type = "section", name = "server_warning", content = "⚠️ You selected a server-based database. Ensure the server is running.", when = "database_driver != sqlite" },

      # NUMERIC COMPARISONS
      { type = "text", name = "server_port", prompt = "Server port", required = true, default = "8080" },

      # Greater than (>)
      { type = "section", name = "high_port_warning", content = "⚠️ Port > 10000 is uncommon. Double-check your configuration.", when = "server_port > 10000" },

      # Less than (<)
      { type = "section", name = "privileged_port_warning", content = "⚠️ Port < 1024 requires root/admin privileges.", when = "server_port < 1024" },

      # Greater than or equal (>=)
      { type = "section", name = "standard_port_notice", content = "✓ Using standard user port range (>= 1024)", when = "server_port >= 1024" },

      # Less than or equal (<=)
      { type = "section", name = "low_port_range", content = "Using low port range (<= 5000)", when = "server_port <= 5000" },

      # STRING OPERATORS
      { type = "text", name = "project_url", prompt = "Project repository URL", placeholder = "https://github.com/user/repo" },

      # startswith
      { type = "section", name = "https_notice", content = "✓ Secure HTTPS URL detected", when = "project_url startswith https" },

      # endswith
      { type = "text", name = "github_specific", prompt = "GitHub Actions enabled?", when = "project_url endswith github.com" },

      # contains
      { type = "confirm", name = "gitlab_ci", prompt = "Enable GitLab CI integration?", when = "project_url contains gitlab" },

      # ARRAY MEMBERSHIP (in)
      { type = "multiselect", name = "detected_languages", prompt = "Which languages are used in your project?", display_mode = "grid", options = [
          { value = "rust", label = "🦀 Rust" },
          { value = "python", label = "🐍 Python" },
          { value = "javascript", label = "📜 JavaScript" },
          { value = "go", label = "🐹 Go" },
        ]
      },

      # Array membership check
      { type = "select", name = "rust_toolchain", prompt = "Rust toolchain version", when = "rust in detected_languages", options = [
          { value = "stable", label = "Stable" },
          { value = "nightly", label = "Nightly" },
          { value = "beta", label = "Beta" },
        ]
      },
      { type = "confirm", name = "python_venv", prompt = "Use Python virtual environment?", default = true, when = "python in detected_languages" },
      { type = "select", name = "nodejs_version", prompt = "Node.js version", when = "javascript in detected_languages", options = [
          { value = "18", label = "Node.js 18 LTS" },
          { value = "20", label = "Node.js 20 LTS" },
          { value = "latest", label = "Latest" },
        ]
      },

      # FILE SYSTEM CONDITIONS
      { type = "section", name = "dockerfile_exists_notice", content = "✓ Dockerfile found in current directory", when = "file_exists(Dockerfile)" },
      { type = "confirm", name = "create_dockerfile", prompt = "No Dockerfile found. Create one?", default = true, when = "!file_exists(Dockerfile)" },
      { type = "confirm", name = "use_existing_config", prompt = "Existing .env file found. Use existing configuration?", when = "file_exists(.env)" },
    ]
    # env_setup group when = "!file_exists(.env)" — fragment has per-element conditions, inline as-is
    @ env_setup.elements
    @ [
      # COMBINED CONDITIONS
      { type = "section", name = "rust_docker_setup", content = "🦀 Rust + Docker detected. Consider using rust:alpine base image.", when = "rust in detected_languages" },
      { type = "section", name = "production_ready_check", content = "✅ Production-ready configuration detected (HTTPS + standard port)", when = "server_port >= 1024" },
    ],
}