package handlers

import (
	"bugulma/backend/internal/domain"

	"gorm.io/gorm"
)

// siteHandler implements EntityHandler for Site entities
type siteHandler struct{}

func NewSiteHandler() domain.EntityHandler[*domain.Site] {
	return &siteHandler{}
}

func (h *siteHandler) GetEntityID(entity *domain.Site) string {
	return entity.ID
}

func (h *siteHandler) GetFieldValue(entity *domain.Site, field string) string {
	switch field {
	case "name":
		return entity.Name
	case "notes":
		return entity.Notes
	case "builder_owner":
		return entity.BuilderOwner
	case "architect":
		return entity.Architect
	case "original_purpose":
		return entity.OriginalPurpose
	case "current_use":
		return entity.CurrentUse
	case "style":
		return entity.Style
	case "materials":
		return entity.Materials
	default:
		return ""
	}
}

func (h *siteHandler) GetLocalizableFields() []string {
	return []string{
		"name",
		"notes",
		"builder_owner",
		"architect",
		"original_purpose",
		"current_use",
		"style",
		"materials",
	}
}

func (h *siteHandler) LoadEntities(db *gorm.DB, options domain.EntityLoadOptions) ([]*domain.Site, error) {
	var sites []*domain.Site
	query := db.Model(&domain.Site{})

	// Filter by heritage status unless --all-sites flag is set
	if !options.IncludeAllSites {
		query = query.Where("heritage_status IS NOT NULL AND heritage_status != ''")
	}

	if err := query.Find(&sites).Error; err != nil {
		return nil, err
	}

	return sites, nil
}

func (h *siteHandler) BuildFieldQuery(db *gorm.DB, field, value string) *gorm.DB {
	switch field {
	case "name":
		return db.Where("name = ?", value)
	case "notes":
		return db.Where("notes = ?", value)
	case "builder_owner":
		return db.Where("builder_owner = ?", value)
	case "architect":
		return db.Where("architect = ?", value)
	case "original_purpose":
		return db.Where("original_purpose = ?", value)
	case "current_use":
		return db.Where("current_use = ?", value)
	case "style":
		return db.Where("style = ?", value)
	case "materials":
		return db.Where("materials = ?", value)
	default:
		return db
	}
}

func (h *siteHandler) GetEntityType() string {
	return "site"
}