package server

import (
	"log"
	"net/http"

	"git.else-if.org/jess/cs-midi-docs/internal/config"
	"git.else-if.org/jess/cs-midi-docs/internal/content"
	"git.else-if.org/jess/cs-midi-docs/internal/render"
	"git.else-if.org/jess/cs-midi-docs/internal/search"
)

type Server struct {
	cfg     *config.Config
	watcher *content.Watcher
	cache   *render.Cache
	index   *search.Index
	tmpl    *Templates
}

func New(cfg *config.Config) (*Server, error) {
	w, err := content.NewWatcher(cfg.ContentDir)
	if err != nil {
		return nil, err
	}

	idx := search.NewIndex()
	idx.Build(w.Tree())

	cache := render.NewCache()

	w.OnChange(func() {
		cache.Clear()
		idx.Build(w.Tree())
		log.Println("content reloaded")
	})
	w.Start()

	tmpl, err := LoadTemplates()
	if err != nil {
		return nil, err
	}

	return &Server{
		cfg:     cfg,
		watcher: w,
		cache:   cache,
		index:   idx,
		tmpl:    tmpl,
	}, nil
}

func (s *Server) ListenAndServe() error {
	mux := http.NewServeMux()
	s.routes(mux)
	log.Printf("listening on %s (content: %s)", s.cfg.Listen, s.cfg.ContentDir)
	return http.ListenAndServe(s.cfg.Listen, mux)
}