// Package handlers 實作 Nestly 的 HTTP handlers 與路由。
package handlers

import (
	"io/fs"
	"net/http"

	"github.com/go-chi/chi/v5"
	"github.com/go-chi/chi/v5/middleware"

	"nestly/internal/auth"
	"nestly/internal/models"
	"nestly/internal/templates"
	"nestly/web"
)

// Dependencies 集中所有 handler 依賴的週邊設施。
type Dependencies struct {
	Templates *templates.Engine
	Accounts  *models.AccountStore
	Sessions  *auth.SessionManager
}

// NewRouter 建立應用程式的完整路由與中介軟體。
func NewRouter(deps Dependencies) http.Handler {
	r := chi.NewRouter()

	r.Use(middleware.Logger)
	r.Use(middleware.Recoverer)

	// 靜態資源由內嵌 FS 提供，部署不依賴磁碟上的 web/ 目錄。
	staticFS, err := fs.Sub(web.StaticFS, "static")
	if err != nil {
		panic(err)
	}
	r.Handle("/static/*", http.StripPrefix("/static/", http.FileServer(http.FS(staticFS))))

	home := &HomeHandler{deps: deps}
	authh := &AuthHandler{deps: deps}

	r.Get("/", home.Show)
	r.Get("/login", authh.Login)
	r.Post("/login", authh.DoLogin)
	r.Post("/logout", authh.Logout)

	return r
}