package http

import (
	"net/http"
	"path/filepath"
	"strings"
)

func Render(w http.ResponseWriter, r *http.Request,
	path string, vars map[string]interface{}, statusCode int) {

	u := r.URL.Path
	if u == "/" {
		u = "/index"
	}
	u = filepath.Join(".", u)

	// Sepcifically use the specified path for the page
	p := NewPage(path)

	if vars != nil {
		p.SetVars(vars)
	}

	err := p.Render(w)
	if err != nil {
		if strings.HasSuffix(err.Error(), "no such file or directory") {
			Logger.Printf("%s %s %d %s", r.RemoteAddr, r.Method, 404, u)
			p = NewPage("404")
			w.WriteHeader(404)
			err := p.Render(w)
			if err != nil {
				Logger.Printf("%s %s path: %s while trying 404: %s", r.RemoteAddr, r.Method, u, err)
				http.Error(w, "Internal server error", 500)
				return
			}
			return
		} else {
			Logger.Printf("%s %s path: %s encountered: %s", r.RemoteAddr, r.Method, u, err)
			http.Error(w, "Internal server error", 500)
			return
		}
	}

	Logger.Printf("%s %s %d %s", r.RemoteAddr, r.Method, statusCode, u)

}

// RenderWithVars allows you to specify a specific page and whether or not
// you wish to override vars. If left nil they will not be overridden.
// Also see RenderForPath if you don't need to override them
func RenderWithVars(w http.ResponseWriter, r *http.Request,
	path string, vars map[string]interface{}) {

	Render(w, r, path, vars, 200)
}

// RenderForPath takes the path to a page and finish up the rendering
// Allowing you to place logic on what page is rendered by your handlers
func RenderForPath(w http.ResponseWriter, r *http.Request, path string) {
	RenderWithVars(w, r, path, nil)
}