package api

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

	"github.com/local-mcp/local-mcp-go/internal/events"
)

func handleGetConfig(stores Stores) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		cfg, err := stores.Settings.Get()
		if err != nil {
			writeError(w, http.StatusInternalServerError, err.Error())
			return
		}
		writeJSON(w, http.StatusOK, cfg)
	}
}

func handleUpdateConfig(stores Stores, broker *events.Broker) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		// Decode partial patch
		var patch struct {
			DefaultWaitSeconds *int `json:"default_wait_seconds"`
		}
		if err := json.NewDecoder(r.Body).Decode(&patch); err != nil {
			writeError(w, http.StatusBadRequest, "Invalid JSON")
			return
		}

		// Get current settings
		current, err := stores.Settings.Get()
		if err != nil {
			writeError(w, http.StatusInternalServerError, err.Error())
			return
		}

		// Apply patches
		if patch.DefaultWaitSeconds != nil {
			current.DefaultWaitSeconds = *patch.DefaultWaitSeconds
		}

		if err := stores.Settings.Update(current); err != nil {
			writeError(w, http.StatusInternalServerError, err.Error())
			return
		}

		broker.Broadcast("config.updated", map[string]any{"config": current})
		writeJSON(w, http.StatusOK, current)
	}
}