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package main
import (
"bufio"
"fmt"
"log"
"net/http"
"os"
"path/filepath"
"regexp"
"sort"
"strconv"
"strings"
"text/template"
)
type Post struct {
Time int
Meta []byte
Thumbnail []byte
Content []byte
}
type Posts struct {
Contents []*Post
}
func loadPosts(location string, postCount int) (p *Posts, err error) {
if postCount == 0 || postCount < -1 {
return nil, os.ErrInvalid
}
var tmpPosts []*Post
if postCount == 1 {
tmpPosts = append(tmpPosts, readFile(location+".html"))
} else {
var depthCount = 0
// TODO - Use less computationally heavy opperation for scalability
err = filepath.Walk(location, func(path string, _ os.FileInfo, _ error) error {
var directory, err = regexp.MatchString("^data/(projects|blog)$", path)
if err != nil {
return err
}
if directory {
depthCount++
} else if postCount == -1 || depthCount < postCount+1 {
tmp := readFile(path)
tmpPosts = append(tmpPosts, tmp)
depthCount++
} else {
depthCount++
}
return nil
})
if err != nil {
return nil, err
}
sort.Slice(tmpPosts, func(i, j int) bool {
return tmpPosts[i].Time > tmpPosts[j].Time
})
}
return &Posts{Contents: tmpPosts}, nil
}
func readFile(location string) (p *Post) {
file, err := os.Open(location)
if err != nil {
log.Fatal(err)
}
scanner := bufio.NewScanner(file)
var section = 0
var tmp *Post = new(Post)
LineLoop:
for scanner.Scan() {
var line = scanner.Text()
var lineByte = []byte(line + "\n")
if line == "{{br}}" { // this is not happy with any space or tab characters that follow,
section++ // so make sure to check if there's whitespace after a {{br}} if
goto LineLoop // there are any errors. I'll fix this later...TM
}
switch section {
case 0:
time, err := strconv.Atoi(strings.TrimSuffix(string(lineByte), "\n"))
if err != nil {
log.Fatal(err)
} else {
tmp.Time = time
}
case 1:
tmp.Meta = append(tmp.Meta, lineByte...)
case 2:
tmp.Thumbnail = append(tmp.Thumbnail, lineByte...)
case 3:
tmp.Content = append(tmp.Content, lineByte...)
}
}
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
file.Close()
return tmp
}
func renderTemplate(w http.ResponseWriter, tmpl string, p *Posts) {
if tmpl == "post" {
t, err := template.ParseFiles("templates/master.html", "templates/postHelp.tmpl")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
err = t.Execute(w, p.Contents[0])
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
} else {
t, err := template.ParseFiles("templates/master.html", "templates/"+tmpl+".html")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
err = t.Execute(w, p)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
}
func rootHandler(w http.ResponseWriter, r *http.Request) {
path := strings.Split(r.URL.Path, "/")
if path[1] != "" {
http.NotFound(w, r)
} else {
p, err := loadPosts("data/projects", 3)
if err != nil {
http.NotFound(w, r)
}
renderTemplate(w, "index", p)
}
}
func aboutHandler(w http.ResponseWriter, r *http.Request) {
renderTemplate(w, "about", nil)
}
func agHandler(w http.ResponseWriter, r *http.Request) {
p, err := loadPosts("data"+strings.TrimSuffix(r.URL.Path, "/"), -1)
if err != nil {
http.NotFound(w, r)
}
renderTemplate(w, strings.TrimPrefix(strings.TrimSuffix(r.URL.Path, "/"), "/"), p)
}
func postHandler(w http.ResponseWriter, r *http.Request) {
path := strings.Split(r.URL.Path, "/")
if path[2] == "" {
agHandler(w, r)
} else {
p, err := loadPosts("data/"+path[1]+"/"+path[2], 1)
if p == nil || err != nil {
http.NotFound(w, r)
} else {
renderTemplate(w, "post", p)
}
}
}
func fileHandler(w http.ResponseWriter, r *http.Request) {
body, _ := os.ReadFile("data/www/" + r.URL.Path)
w.Header().Set("Content-Type", "text/css; charset=utf-8")
fmt.Fprintf(w, "%s", body)
}
func makeHandler(fn func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
fn(w, r)
}
}
func httpsRedirect(w http.ResponseWriter, req *http.Request) {
// remove/add not default ports from req.Host
target := "https://" + req.Host + req.URL.Path
if len(req.URL.RawQuery) > 0 {
target += "?" + req.URL.RawQuery
}
log.Printf("redirect to: %s", target)
http.Redirect(w, req, target,
// see comments below and consider the codes 308, 302, or 301
http.StatusMovedPermanently)
}
func main() {
/* hostValid, _ := regexp.MatchString("^alexscerba.com$", r.URL.Path)
if !hostValid {
req, _ := http.NewRequest(r.Method, "alexscerba.com"+r.URL.Path, r.Body)
redirect(w, req)
} */
fs := http.FileServer(http.Dir("./data/static"))
http.Handle("/static/", http.StripPrefix("/static/", fs))
http.HandleFunc("/projects/", postHandler)
http.HandleFunc("/blog/", postHandler)
http.HandleFunc("/about/", aboutHandler)
http.HandleFunc("/", rootHandler)
go http.ListenAndServe(":80", http.HandlerFunc(httpsRedirect))
log.Fatal(http.ListenAndServeTLS(":443", "/etc/letsencrypt/live/alexscerba.com/fullchain.pem", "/etc/letsencrypt/live/alexscerba.com/privkey.pem", nil))
//log.Fatal(http.ListenAndServe(":4000", nil)) // for local dev because I'm lazy
}
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