package main import ( "context" "html/template" "io/ioutil" "net/http" "os" "path/filepath" "sort" "strings" "sync" "time" "github.com/Xe/jsonfeed" "github.com/Xe/ln" "github.com/gorilla/feeds" blackfriday "github.com/russross/blackfriday" "github.com/tj/front" analytics "gopkg.in/segmentio/analytics-go.v3" ) var port = os.Getenv("PORT") func main() { if port == "" { port = "29384" } s, err := Build() if err != nil { ln.FatalErr(context.Background(), err, ln.Action("Build")) } 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 segment analytics.Client } func (s *Site) ServeHTTP(w http.ResponseWriter, r *http.Request) { ln.Log(r.Context(), ln.F{"action": "Site.ServeHTTP", "user_ip_address": r.RemoteAddr, "path": r.RequestURI}) s.mux.ServeHTTP(w, r) if s.segment != nil { if !strings.HasPrefix(r.RequestURI, "/blog/") { err := s.segment.Enqueue(analytics.Track{ UserId: Hash("h", r.Header.Get("X-Forwarded-For")), Event: "Page Viewed", Properties: analytics.NewProperties().SetURL(r.RequestURI), }) if err != nil { ln.Error(r.Context(), err) } } } } // 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{}, } if wk := os.Getenv("SEGMENT_WRITE_KEY"); wk != "" { s.segment = analytics.New(wk) } 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 } 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)) resumeData, err := ioutil.ReadFile("./static/resume/resume.md") if err != nil { return nil, err } s.Resume = template.HTML(blackfriday.Run(resumeData)) 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, 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)) s.mux.Handle("/contact", s.renderTemplatePage("contact.html", nil)) 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) s.mux.Handle("/css/", http.FileServer(http.Dir("."))) s.mux.Handle("/static/", http.FileServer(http.Dir("."))) s.mux.HandleFunc("/sw.js", func(w http.ResponseWriter, r *http.Request) { http.ServeFile(w, r, "./static/js/sw.js") }) 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] }