package metadata

import (
	"github.com/nexuscrm/shared/pkg/constants"
	"github.com/nexuscrm/shared/pkg/models"
)

// EnrichWithSystemFields adds standard system fields to an object schema if they are missing.
// This ensures that all custom objects created via the API have the required infrastructure fields.
// standardFields should be provided by SchemaManager (SSOT).
func EnrichWithSystemFields(schema *models.ObjectMetadata, standardFields []models.FieldMetadata) {
	// Helper to check if field exists
	hasField := func(apiName string) bool {
		for _, f := range schema.Fields {
			if f.APIName == apiName {
				return true
			}
		}
		return false
	}

	var newFields []models.FieldMetadata

	// Iterate over standard SSOT fields and add if missing
	for _, stdField := range standardFields {
		if !hasField(stdField.APIName) {
			// Create a copy to avoid pointer issues if standardFields elements are reused (safety)
			fieldCopy := stdField
			newFields = append(newFields, fieldCopy)
		}
	}

	// Prepend system fields to ensure they appear first
	schema.Fields = append(newFields, schema.Fields...)

	// Root Fix: Ensure every object has a Name field (Primary Display Field)
	hasNameField := false
	hasNameAPI := false

	for _, f := range schema.Fields {
		if f.IsNameField {
			hasNameField = true
		}
		if f.APIName == constants.FieldName {
			hasNameAPI = true
		}
	}

	// If no defined Name Field and no "name" column, inject default Name
	if !hasNameField && !hasNameAPI {
		defaultNameField := models.FieldMetadata{
			APIName:     constants.FieldName,
			Label:       "Name", // Or "Record Name"
			Type:        constants.FieldTypeString,
			Required:    true,
			IsNameField: true,
			IsSystem:    false, // User editable
		}
		// Append to fields
		schema.Fields = append(schema.Fields, defaultNameField)
	}
}