xesite/main.go

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package main
import (
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"context"
"html/template"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"sort"
"strings"
"sync"
"time"
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"github.com/GeertJohan/go.rice"
"github.com/Xe/jsonfeed"
"github.com/Xe/ln"
"github.com/gorilla/feeds"
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blackfriday "github.com/russross/blackfriday"
"github.com/tj/front"
)
var port = os.Getenv("PORT")
func main() {
if port == "" {
port = "29384"
}
s, err := Build()
if err != nil {
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ln.FatalErr(context.Background(), err, ln.Action("Build"))
}
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ln.Log(context.Background(), ln.F{"action": "http_listening", "port": port})
http.ListenAndServe(":"+port, s)
}
// Site is the parent object for https://christine.website's backend.
type Site struct {
Posts Posts
Resume template.HTML
rssFeed *feeds.Feed
jsonFeed *jsonfeed.Feed
mux *http.ServeMux
templates map[string]*template.Template
tlock sync.RWMutex
}
func (s *Site) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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ln.Log(r.Context(), ln.F{"action": "Site.ServeHTTP", "user_ip_address": r.RemoteAddr, "path": r.RequestURI})
s.mux.ServeHTTP(w, r)
}
// Build creates a new Site instance or fails.
func Build() (*Site, error) {
type postFM struct {
Title string
Date string
}
s := &Site{
rssFeed: &feeds.Feed{
Title: "Christine Dodrill's Blog",
Link: &feeds.Link{Href: "https://christine.website/blog"},
Description: "My blog posts and rants about various technology things.",
Author: &feeds.Author{Name: "Christine Dodrill", Email: "me@christine.website"},
Created: bootTime,
Copyright: "This work is copyright Christine Dodrill. My viewpoints are my own and not the view of any employer past, current or future.",
},
jsonFeed: &jsonfeed.Feed{
Version: jsonfeed.CurrentVersion,
Title: "Christine Dodrill's Blog",
HomePageURL: "https://christine.website",
FeedURL: "https://christine.website/blog.json",
Description: "My blog posts and rants about various technology things.",
UserComment: "This is a JSON feed of my blogposts. For more information read: https://jsonfeed.org/version/1",
Icon: icon,
Favicon: icon,
Author: jsonfeed.Author{
Name: "Christine Dodrill",
Avatar: icon,
},
},
mux: http.NewServeMux(),
templates: map[string]*template.Template{},
}
err := filepath.Walk("./blog/", func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.IsDir() {
return nil
}
fin, err := os.Open(path)
if err != nil {
return err
}
defer fin.Close()
content, err := ioutil.ReadAll(fin)
if err != nil {
return err
}
var fm postFM
remaining, err := front.Unmarshal(content, &fm)
if err != nil {
return err
}
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output := blackfriday.Run(remaining)
p := &Post{
Title: fm.Title,
Date: fm.Date,
Link: strings.Split(path, ".")[0],
Body: string(remaining),
BodyHTML: template.HTML(output),
}
s.Posts = append(s.Posts, p)
return nil
})
if err != nil {
return nil, err
}
sort.Sort(sort.Reverse(s.Posts))
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cb, err := rice.FindBox("css")
if err != nil {
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return nil, err
}
sb, err := rice.FindBox("static")
if err != nil {
return nil, err
}
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s.Resume = template.HTML(blackfriday.Run(sb.MustBytes("resume/resume.md")))
for _, item := range s.Posts {
itime, _ := time.Parse("2006-01-02", item.Date)
s.rssFeed.Items = append(s.rssFeed.Items, &feeds.Item{
Title: item.Title,
Link: &feeds.Link{Href: "https://christine.website/" + item.Link},
Description: item.Summary,
Created: itime,
})
s.jsonFeed.Items = append(s.jsonFeed.Items, jsonfeed.Item{
ID: "https://christine.website/" + item.Link,
URL: "https://christine.website/" + item.Link,
Title: item.Title,
DatePublished: itime,
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ContentHTML: string(item.BodyHTML),
})
}
// Add HTTP routes here
s.mux.Handle("/", s.renderTemplatePage("index.html", nil))
s.mux.Handle("/resume", s.renderTemplatePage("resume.html", s.Resume))
s.mux.Handle("/blog", s.renderTemplatePage("blogindex.html", s.Posts))
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s.mux.Handle("/contact", s.renderTemplatePage("contact.html", nil))
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s.mux.HandleFunc("/blog.rss", s.createFeed)
s.mux.HandleFunc("/blog.atom", s.createAtom)
s.mux.HandleFunc("/blog.json", s.createJsonFeed)
s.mux.HandleFunc("/blog/", s.showPost)
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s.mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(sb.HTTPBox())))
s.mux.Handle("/css/", http.StripPrefix("/css/", http.FileServer(cb.HTTPBox())))
return s, nil
}
const icon = "https://christine.website/static/img/avatar.png"
// Post is a single blogpost.
type Post struct {
Title string `json:"title"`
Link string `json:"link"`
Summary string `json:"summary,omitifempty"`
Body string `json:"-"`
BodyHTML template.HTML `json:"body"`
Date string `json:"date"`
}
// Posts implements sort.Interface for a slice of Post objects.
type Posts []*Post
func (p Posts) Len() int { return len(p) }
func (p Posts) Less(i, j int) bool {
iDate, _ := time.Parse("2006-01-02", p[i].Date)
jDate, _ := time.Parse("2006-01-02", p[j].Date)
return iDate.Unix() < jDate.Unix()
}
func (p Posts) Swap(i, j int) { p[i], p[j] = p[j], p[i] }