package web

import (
	"net/http"
	"net/url"
)

func urlQuery(s string) string { return url.QueryEscape(s) }

func (s *Server) rootRoutes() http.Handler {
	m := http.NewServeMux()
	m.HandleFunc("GET /healthz", func(w http.ResponseWriter, r *http.Request) { w.Write([]byte("ok")) })
	m.HandleFunc("GET /webadmin", s.handleLoginForm)
	m.HandleFunc("POST /webadmin", s.handleLogin)
	m.HandleFunc("POST /logout", s.handleLogout)
	m.HandleFunc("GET /dashboard", s.requireAuth(s.handleDashboard))
	m.HandleFunc("GET /account/password", s.requireAuth(s.handlePasswordForm))
	m.HandleFunc("POST /account/password", s.requireAuth(s.handlePassword))

	// blog management (owner or superadmin)
	m.HandleFunc("GET /b/{sub}/{$}", s.withBlog(s.handleBlogOverview))
	m.HandleFunc("GET /b/{sub}/settings", s.withBlog(s.handleSettingsForm))
	m.HandleFunc("POST /b/{sub}/settings", s.withBlog(s.handleSettings))
	m.HandleFunc("GET /b/{sub}/pages", s.withBlog(s.handlePages))
	m.HandleFunc("GET /b/{sub}/pages/new", s.withBlog(s.handlePageForm))
	m.HandleFunc("POST /b/{sub}/pages/new", s.withBlog(s.handlePageSave))
	m.HandleFunc("GET /b/{sub}/pages/{id}/edit", s.withBlog(s.handlePageForm))
	m.HandleFunc("POST /b/{sub}/pages/{id}/edit", s.withBlog(s.handlePageSave))
	m.HandleFunc("GET /b/{sub}/pages/{id}/delete", s.withBlog(s.handlePageDeleteConfirm))
	m.HandleFunc("POST /b/{sub}/pages/{id}/delete", s.withBlog(s.handlePageDelete))
	m.HandleFunc("POST /b/{sub}/pages/{id}/move", s.withBlog(s.handlePageMove))
	m.HandleFunc("POST /b/{sub}/pages/{id}/home", s.withBlog(s.handlePageHome))
	m.HandleFunc("GET /b/{sub}/posts", s.withBlog(s.handlePosts))
	m.HandleFunc("GET /b/{sub}/posts/new", s.withBlog(s.handlePostForm))
	m.HandleFunc("POST /b/{sub}/posts/new", s.withBlog(s.handlePostSave))
	m.HandleFunc("GET /b/{sub}/posts/{id}/edit", s.withBlog(s.handlePostForm))
	m.HandleFunc("POST /b/{sub}/posts/{id}/edit", s.withBlog(s.handlePostSave))
	m.HandleFunc("GET /b/{sub}/posts/{id}/delete", s.withBlog(s.handlePostDeleteConfirm))
	m.HandleFunc("POST /b/{sub}/posts/{id}/delete", s.withBlog(s.handlePostDelete))
	m.HandleFunc("GET /b/{sub}/design", s.withBlog(s.handleDesignForm))
	m.HandleFunc("POST /b/{sub}/design", s.withBlog(s.handleDesign))
	m.HandleFunc("GET /b/{sub}/images", s.withBlog(s.handleImages))
	m.HandleFunc("POST /b/{sub}/images/upload", s.withBlog(s.handleImageUpload))
	m.HandleFunc("POST /b/{sub}/images/{id}/delete", s.withBlog(s.handleImageDelete))

	// superadmin
	m.HandleFunc("GET /admin/{$}", s.requireAdmin(s.handleAdmin))
	m.HandleFunc("GET /admin/users/new", s.requireAdmin(s.handleAdminNewUserForm))
	m.HandleFunc("POST /admin/users/new", s.requireAdmin(s.handleAdminNewUser))
	m.HandleFunc("POST /admin/users/{id}/reset-password", s.requireAdmin(s.handleAdminResetPassword))
	m.HandleFunc("POST /admin/users/{id}/disable", s.requireAdmin(s.handleAdminSetDisabled(true)))
	m.HandleFunc("POST /admin/users/{id}/enable", s.requireAdmin(s.handleAdminSetDisabled(false)))
	m.HandleFunc("GET /admin/users/{id}/delete", s.requireAdmin(s.handleAdminDeleteUserConfirm))
	m.HandleFunc("POST /admin/users/{id}/delete", s.requireAdmin(s.handleAdminDeleteUser))

	m.HandleFunc("GET /media/{id}", s.handleMedia)
	m.Handle("GET /static/{file}", s.staticHandler())
	// The root domain also serves the superadmin's blog. Literal routes above win
	// over these wildcards; see reservedPageSlugs for the names that are shadowed.
	s.blogRoutes(m, s.hostBlog)
	return s.session(m)
}

// blogRoutes registers the public blog pages; wrap resolves the blog into the request context.
func (s *Server) blogRoutes(m *http.ServeMux, wrap func(http.HandlerFunc) http.HandlerFunc) {
	m.HandleFunc("GET /{$}", wrap(s.handleBlogHome))
	m.HandleFunc("GET /feed.xml", wrap(s.handleBlogFeed))
	m.HandleFunc("GET /{page}", wrap(s.handleBlogPage))
	m.HandleFunc("GET /{page}/{post}", wrap(s.handleBlogPost))
}

func (s *Server) subdomainRoutes() http.Handler {
	m := http.NewServeMux()
	// Bloggers type /webadmin on their own blog; send them to the real login page.
	m.HandleFunc("GET /webadmin", s.handleWebadminRedirect)
	m.HandleFunc("GET /media/{id}", s.handleMedia)
	m.Handle("GET /static/{file}", s.staticHandler())
	s.blogRoutes(m, s.hostBlog)
	return m
}

func (s *Server) staticHandler() http.Handler {
	fs := http.StripPrefix("/static/", http.FileServer(http.FS(s.tpl.AssetsFS())))
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if !s.cfg.Dev {
			w.Header().Set("Cache-Control", "public, max-age=3600")
		}
		fs.ServeHTTP(w, r)
	})
}