package handlers

import (
	"encoding/json"
	"net/http"

	"git.nakama.town/fmartingr/hako/internal/model"
	"git.nakama.town/fmartingr/hako/internal/server/webcontext"
)

// CategoryHandler handles category-related HTTP requests
type CategoryHandler struct {
	deps model.Dependencies
}

// NewCategoryHandler creates a new CategoryHandler
func NewCategoryHandler(deps model.Dependencies) *CategoryHandler {
	return &CategoryHandler{
		deps: deps,
	}
}

// HandleListCategories handles GET /api/v1/categories
func (h *CategoryHandler) HandleListCategories(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodGet {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	c := webcontext.NewWebContext(w, r)

	// List categories
	categories, err := h.deps.Domains().Categories().ListCategories(c.Context())
	if err != nil {
		http.Error(w, "Failed to list categories", http.StatusInternalServerError)
		return
	}

	// Build response
	items := make([]model.CategoryResponse, 0, len(categories))
	for _, category := range categories {
		items = append(items, model.CategoryResponse{
			ID:   category.ID,
			Name: category.Name,
			Icon: category.Icon,
		})
	}

	c.ResponseWriter().Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(c.ResponseWriter()).Encode(items)
}