package main

import (
	"html/template"
	"io/ioutil"
	"time"
	"fmt"
	"strings"
)

type Post struct {
	Date time.Time
	Title string
	URLTitle string
	Content template.HTML
}

var lewd string = "Lewd Interlude"
var reveries string = "Takunomi Coffee Reveries, Vol. I"
var romantic string = "Romantic Japanese Christmas Takunomi Saturday Recap"

func spaceToHyphen (s string) string {
	return strings.Replace(s, " ", "-", -1)
}

func setDate (year int, month time.Month, day int) time.Time {
	return time.Date(year, month, day, 0, 0, 0, 0, time.UTC)
}

func newPost (date time.Time, title string) Post {
	return Post{date, title, spaceToHyphen(title), getPostContent(title)}
}

var postsCollection = []Post {
	newPost (setDate(2017, time.September, 12), lewd),
	newPost(setDate(2017, time.March, 4), reveries),
	newPost(setDate(2017, time.April, 23), romantic),
}

func getPostByURLTitle (title string) Post {
	for _, post := range postsCollection {
		if post.URLTitle == title {
			return post
		}
	}
	return Post{}
}

func getPostContent (title string) template.HTML {
	content, err := ioutil.ReadFile("posts/" + title)
	if err != nil {
		fmt.Println(content)
		return template.HTML("")
	}
	return template.HTML(string(content[:len(content)]))
}

func getNewestPosts (numberOfPosts int) []Post {
	var posts []Post
	for i := 0; i < numberOfPosts; i++ {
		post := postsCollection[i]
		posts = append(posts, getPostByURLTitle(post.URLTitle))
	}
	return posts
}