package application

import (
	"net/http"
	"sort"
	"strings"

	"github.com/rs/zerolog/log"
)

func (h *Handler) DashboardHTTPHandler() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		// Parse driver address geography filter
		driverAddressGeo := r.URL.Query().Get("driver_address_geo")
		driverAddressGeoLayer, driverAddressGeoCode := "", ""
		if driverAddressGeo != "" {
			parts := strings.SplitN(driverAddressGeo, ":", 2)
			if len(parts) == 2 {
				driverAddressGeoLayer, driverAddressGeoCode = parts[0], parts[1]
			}
		}

		result, err := h.applicationHandler.GetDashboardData(r.Context(), driverAddressGeoLayer, driverAddressGeoCode)
		if err != nil {
			log.Error().Err(err).Msg("error retrieving dashboard data")
			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
			return
		}

		// Enrich geography filters with names from geography service
		var enrichedGeoFilters []map[string]string
		if h.cfg.GetBool("geography.filters.enabled") {
			geoFilters := h.cfg.Get("geography.filters.geographies")
			if geoList, ok := geoFilters.([]any); ok {
				for _, geoItem := range geoList {
					if geoMap, ok := geoItem.(map[string]any); ok {
						layer := ""
						code := ""
						if l, ok := geoMap["layer"].(string); ok {
							layer = l
						}
						if c, ok := geoMap["code"].(string); ok {
							code = c
						}

						enrichedGeo := map[string]string{
							"layer": layer,
							"code":  code,
							"name":  code, // Default to code if name fetch fails
						}

						// Fetch name from geography service
						if layer != "" && code != "" {
							if geoFeature, err := h.services.Geography.Find(layer, code); err == nil {
								if name := geoFeature.Properties.MustString("nom"); name != "" {
									enrichedGeo["name"] = name
								}
							}
						}

						enrichedGeoFilters = append(enrichedGeoFilters, enrichedGeo)
					}
				}
			}

			// Sort by name
			sort.Slice(enrichedGeoFilters, func(i, j int) bool {
				return enrichedGeoFilters[i]["name"] < enrichedGeoFilters[j]["name"]
			})
		}

		h.renderer.Dashboard(w, r, result.Accounts, len(result.Accounts), len(result.Members), result.Events, result.Bookings, result.SolidarityDrivers, result.OrganizedCarpoolDrivers, driverAddressGeo, enrichedGeoFilters)
	}
}