package router

import (
	"fmt"
	"html/template"
	"net/http"
	"runtime"
	"strings"
	"time"

	"go.jolheiser.com/vanity/api"
	"go.jolheiser.com/vanity/flags"
	"go.jolheiser.com/vanity/router/templates"
	"go.jolheiser.com/vanity/service"

	"github.com/go-chi/chi"
	"github.com/go-chi/chi/middleware"
	"go.jolheiser.com/beaver"
)

var (
	index  = template.Must(template.New("index").Parse(templates.Head + templates.Index + templates.Foot))
	vanity = template.Must(template.New("vanity").Parse(templates.Head + templates.Vanity + templates.Foot))
)

func Init() *chi.Mux {
	r := chi.NewRouter()
	r.Use(middleware.RedirectSlashes)
	r.Use(middleware.Recoverer)
	r.Use(middleware.Timeout(30 * time.Second))

	r.Get("/", doIndex)
	r.Get("/*", doVanity)

	svc = service.New()

	beaver.Info("Warming up cache...")
	cronUpdate()
	beaver.Infof("Finished warming up cache: %s", cache.Names())
	go cronStart()

	beaver.Infof("Running vanity server at http://localhost:%d", flags.Port)
	return r
}

func doIndex(res http.ResponseWriter, _ *http.Request) {
	if err := index.Execute(res, map[string]interface{}{
		"Packages": cache.packages,
		"AppVer":   api.Version,
		"GoVer":    runtime.Version(),
	}); err != nil {
		beaver.Error(err)
	}
}

func doVanity(res http.ResponseWriter, req *http.Request) {
	key := chi.URLParam(req, "*")
	pkg, ok := cache.packages[strings.Split(key, "/")[0]]
	if !ok {
		http.NotFound(res, req)
		return
	}

	if err := vanity.Execute(res, map[string]interface{}{
		"Package":  pkg,
		"AppVer":   api.Version,
		"GoVer":    runtime.Version(),
		"GoSource": fmt.Sprintf("%s %s %s %s", pkg.Module(flags.Domain), pkg.CloneHTTP, svc.GoDir(pkg), svc.GoFile(pkg)),
	}); err != nil {
		beaver.Error(err)
	}
}