package main

import (
	"fmt"
	"html/template"
	"net/http"

	"git.wmi.amu.edu.pl/s439508/Pracownia.Programowania/helpers"
	"git.wmi.amu.edu.pl/s439508/Pracownia.Programowania/models"
	"github.com/go-martini/martini"
	"github.com/martini-contrib/render"
)

var posts map[string]*models.Post

func index(rend render.Render) {
	rend.HTML(http.StatusOK, "index", posts)

}

func write(rend render.Render) {
	rend.HTML(http.StatusOK, "write", &models.Post{})
}

func edit(rend render.Render, w http.ResponseWriter, r *http.Request, params martini.Params) {
	id := params["id"]
	post, found := posts[id]
	if !found {
		rend.Redirect("/")
		return
	}
	rend.HTML(http.StatusOK, "write", post)
}

func savePost(rend render.Render, w http.ResponseWriter, r *http.Request) {
	id := r.FormValue("id")
	title := r.FormValue("title")
	contentMd := r.FormValue("content")
	contentHtml := helpers.MarkdownToHtml(contentMd)

	var post *models.Post
	if id != "" {
		post = posts[id]
		post.Title = title
		post.ContentHtml = contentHtml
		post.ContentMd = contentMd
	} else {
		post := models.NewPost(helpers.GenerateId(), title, contentHtml, contentMd)
		posts[post.Id] = post
	}

	rend.Redirect("/")
}

func deletePost(rend render.Render, w http.ResponseWriter, r *http.Request, params martini.Params) {
	id := params["id"]
	if id == "" {
		http.NotFound(w, r)
	}

	delete(posts, id)

	rend.Redirect("/")
}

func getHtmlPost(rend render.Render, w http.ResponseWriter, r *http.Request) {
	md := r.FormValue("md")
	rend.JSON(http.StatusOK, map[string]interface{}{
		"html": helpers.MarkdownToHtml(md),
	})
}
func unescape(s string) interface{} {
	return template.HTML(s)
}

func main() {
	posts = make(map[string]*models.Post, 0)

	fmt.Println("Listening port 3000")
	m := martini.Classic()

	unescapeFuncMap := template.FuncMap{"unescape": unescape}

	m.Use(render.Renderer(render.Options{
		Directory:  "views",
		Layout:     "layout",
		Extensions: []string{".html"},
		Funcs:      []template.FuncMap{unescapeFuncMap},
		Charset:    "UTF-8",
		IndentJSON: true,
	}))

	staticOptions := martini.StaticOptions{Prefix: "bower_components"}
	m.Use(martini.Static("bower_components", staticOptions))
	m.Get("/", index)
	m.Get("/write", write)
	m.Get("/edit/:id", edit)
	m.Post("/savePost", savePost)
	m.Get("/deletePost/:id", deletePost)
	m.Post("/getHtml", getHtmlPost)

	m.Run()
}