owl-blogs/cmd/kiss-web/main.go

154 lines
3.6 KiB
Go

package main
import (
"h4kor/kiss-social"
"h4kor/kiss-social/cmd/kiss-web/static"
"net/http"
"os"
"strconv"
"strings"
)
func handler(repo kiss.Repository) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
// normalize the path
path := r.URL.Path
// remove leading '/'
if len(path) > 0 && path[0] == '/' {
path = path[1:]
}
// remove trailing '/'
if len(path) > 0 && path[len(path)-1] == '/' {
path = path[:len(path)-1]
}
// index page
if path == "" {
println("Index page")
indexHandler(repo)(w, r)
return
}
// parse the path
parts := strings.Split(path, "/")
userName := parts[0]
// only one part -> user page
if len(parts) == 1 {
println("User page")
userHandler(repo, userName)(w, r)
return
}
// multiple parts -> post page
println("Post page")
postId := strings.Join(parts[1:], "/")
postHandler(repo, userName, postId)(w, r)
}
}
func indexHandler(repo kiss.Repository) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
users, err := repo.Users()
if err != nil {
println("Error getting users: ", err.Error())
w.Write([]byte("Error getting users"))
return
}
w.Write([]byte("Index"))
w.Write([]byte("<ul>"))
for _, user := range users {
w.Write([]byte("<li>"))
w.Write([]byte(user.Name()))
w.Write([]byte("</li>"))
}
}
}
func userHandler(repo kiss.Repository, userName string) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
user, err := repo.GetUser(userName)
if err != nil {
println("Error getting user: ", err.Error())
w.WriteHeader(http.StatusNotFound)
w.Write([]byte("User not found"))
return
}
html, err := kiss.RenderIndexPage(user)
if err != nil {
println("Error rendering index page: ", err.Error())
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte("Internal server error"))
return
}
println("Rendering index page for user", userName)
w.Write([]byte(html))
}
}
func postHandler(repo kiss.Repository, userName string, postId string) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
user, err := repo.GetUser(userName)
if err != nil {
println("Error getting user: ", err.Error())
w.WriteHeader(http.StatusNotFound)
w.Write([]byte("User not found"))
return
}
post, err := user.GetPost(postId)
if err != nil {
println("Error getting post: ", err.Error())
w.WriteHeader(http.StatusNotFound)
w.Write([]byte("Post not found"))
return
}
html, err := kiss.RenderPost(post)
if err != nil {
println("Error rendering post: ", err.Error())
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte("Internal server error"))
return
}
println("Rendering post", postId)
w.Write([]byte(html))
}
}
func main() {
println("KISS Web Server")
println("Parameters")
println("-repo <repo> - Specify the repository to use. Defaults to '.'")
println("-port <port> - Specify the port to use, Default is '8080'")
var repoName string
var port int
for i, arg := range os.Args[0 : len(os.Args)-1] {
if arg == "-port" {
port, _ = strconv.Atoi(os.Args[i+1])
}
if arg == "-repo" {
repoName = os.Args[i+1]
}
}
if repoName == "" {
repoName = "."
}
if port == 0 {
port = 8080
}
repo, err := kiss.OpenRepository(repoName)
if err != nil {
println("Error opening repository: ", err.Error())
os.Exit(1)
}
http.Handle("/static/", static.StaticHandler(repo))
http.HandleFunc("/", handler(repo))
println("Listening on port", port)
http.ListenAndServe(":"+strconv.Itoa(port), nil)
}