package main

import (
    "net/http"
    "encoding/json"
    "log"
    "encoding/hex"
    "crypto/sha512"
    "io"
    "html/template"
)

type OutputFormatter struct {
    Author string
    Content string
}

type Blog struct {
    Posts []BlogPost
}

func startServer() {
    http.HandleFunc("/", get)
    http.HandleFunc("/add", post)
    log.Fatal(http.ListenAndServe(":12345", nil))
}

func get(w http.ResponseWriter, r *http.Request) {
    t, err := template.ParseFiles("templates/overview.html")

    if err != nil {
        log.Panic(err)
    }

    w.WriteHeader(http.StatusOK)
    /*
    w.Write([]byte("response:\n"))
    for _, post := range readBlogpostsFromDB() {
        w.Write([]byte(post.Content))
    }
    */
    results := readBlogpostsFromDB()
    t.ExecuteTemplate(w, "overview.html", Blog{results})
}

func post(w http.ResponseWriter, r *http.Request) {
    var post BlogPost
    json.NewDecoder(r.Body).Decode(&post)
    if verifyPassword(post.Secret) {
        messages = append(messages, &post.Content)
        writeToDB(post)
        w.WriteHeader(http.StatusCreated)
    } else {
        w.WriteHeader(http.StatusForbidden)
    }
}

func hash(pass string) string {
    h := sha512.New()
    io.WriteString(h, pass)
    return hex.EncodeToString(h.Sum(nil))
}

func verifyPassword(pass string) bool {
    return hash(pass) == "401b09eab3c013d4ca54922bb802bec8fd5318192b0a75f201d8b3727429080fb337591abd3e44453b954555b7a0812e1081c39b740293f765eae731f5a65ed1"
}