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78 lines
1.9 KiB
Go
78 lines
1.9 KiB
Go
7 months ago
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package main
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import (
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"fmt"
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"log"
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"net/http"
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"os"
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)
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// A wiki consists of a series of interconnected pages, each of which has a title and a body
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type Page struct {
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Title string
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//The Body element is a []byte rather than string because that is the type expected by the io libraries we will use
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Body []byte
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}
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// save Saves a page to disk.
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func (p *Page) save() error {
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filename := p.Title + ".txt"
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return os.WriteFile(filename, p.Body, 0600)
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}
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// loadPage loads a Page from disk.
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// It takes the title of the page as an argument, reads the corresponding
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// file, and returns a pointer to a Page struct containing the title and body.
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// If an error occurs during reading, it returns the error.
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func loadPage(title string) (*Page, error) {
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filename := title + ".txt"
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body, err := os.ReadFile(filename)
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if err != nil {
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return nil, err
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}
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return &Page{Title: title, Body: body}, nil
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}
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func viewHandler(w http.ResponseWriter, r *http.Request) {
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html := "<h1>%s</h1><div>%s</div>"
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filename := r.URL.Path[len("/view/"):]
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page, _ := loadPage(filename)
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fmt.Fprintf(w, html, page.Title, page.Body)
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}
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func editHandler(w http.ResponseWriter, r *http.Request) {
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title := r.URL.Path[len("/edit/"):]
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page, err := loadPage(title)
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if err != nil {
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page = &Page{Title: title}
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}
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fmt.Fprintf(w, "<h1>Editing %s</h1>"+
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"<form action=\"/save/%s\" method=\"POST\">"+
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"<textarea name=\"body\">%s</textarea><br>"+
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"<input type=\"submit\" value=\"Save\">"+
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"</form>",
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page.Title, page.Title, page.Body)
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}
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func saveHandler(w http.ResponseWriter, r *http.Request) {
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}
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func main() {
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http.HandleFunc("/view/", viewHandler)
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http.HandleFunc("/edit/", editHandler)
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http.HandleFunc("/save/", saveHandler)
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log.Println("Serving on: http://0.0.0.0:5001")
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log.Fatal(http.ListenAndServe(":5001", nil))
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}
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// func main() {
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// p1 := &Page{Title: "TestPage", Body: []byte("This is a test page.")}
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// p1.save()
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// p2, _ := loadPage("TestPage")
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// fmt.Println(string(p2.Body))
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// }
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