package router

import (
	"encoding/json"
	"github.com/go-chi/chi"
	"github.com/go-chi/cors"
	"go.jolheiser.com/beaver"
	"go.jolheiser.com/vanity/api"
	"go.jolheiser.com/vanity/flags"
	"net/http"
	"runtime"
	"time"
)

func apiRoutes() *chi.Mux {
	r := chi.NewRouter()
	r.Use(cors.AllowAll().Handler)

	r.Get("/status", doAPIStatus)
	r.Get("/update", doAPIUpdate)

	return r
}

func doAPIStatus(res http.ResponseWriter, _ *http.Request) {
	res.Header().Set("Content-Type", "application/json")

	var nextUpdate *string
	if !lastUpdate.IsZero() {
		nu := lastUpdate.Add(flags.Interval).Format(time.RFC3339)
		nextUpdate = &nu
	}

	resp := map[string]interface{}{
		"vanity_version": api.Version,
		"go_version":     runtime.Version(),
		"num_packages":   len(cache.Packages),
		"next_update":    nextUpdate,
	}

	data, err := json.Marshal(&resp)
	if err != nil {
		beaver.Errorf("could not marshal API status: %v", err)
		data = []byte("{}")
	}

	if _, err = res.Write(data); err != nil {
		beaver.Errorf("could not write response: %v", err)
	}
}

func doAPIUpdate(res http.ResponseWriter, _ *http.Request) {
	res.Header().Set("Content-Type", "application/json")

	resp := map[string]bool{
		"updated": false,
	}
	if canUpdate {
		updateCache()
		resp["updated"] = true
	}

	payload, err := json.Marshal(resp)
	if err != nil {
		beaver.Errorf("could not marshal payload: %v", err)
	}

	if _, err = res.Write(payload); err != nil {
		beaver.Errorf("could not write response: %v", err)
	}
}