blog/pages.go

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package blog
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import (
"html/template"
"io/ioutil"
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"net/http"
"strings"
"github.com/kirsle/blog/internal/controllers/posts"
"github.com/kirsle/blog/internal/log"
"github.com/kirsle/blog/internal/markdown"
"github.com/kirsle/blog/internal/render"
"github.com/kirsle/blog/internal/responses"
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)
// PageHandler is the catch-all route handler, for serving static web pages.
func (b *Blog) PageHandler(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
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// log.Debug("Catch-all page handler invoked for request URI: %s", path)
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// Remove trailing slashes by redirecting them away.
if len(path) > 1 && path[len(path)-1] == '/' {
responses.Redirect(w, strings.TrimRight(path, "/"))
return
}
// Restrict special paths.
if strings.HasPrefix(strings.ToLower(path), "/.") {
responses.Forbidden(w, r, "Forbidden")
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return
}
// Search for a file that matches their URL.
filepath, err := render.ResolvePath(path)
if err != nil {
// See if it resolves as a blog entry.
err = postctl.ViewPost(w, r, strings.TrimLeft(path, "/"))
if err != nil {
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log.Error("Post by fragment %s not found: %s", path, err)
responses.NotFound(w, r, "The page you were looking for was not found.")
}
return
}
// Is it a template file?
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if strings.HasSuffix(filepath.URI, ".gohtml") {
render.Template(w, r, filepath.URI, nil)
return
}
// Is it a Markdown file?
if strings.HasSuffix(filepath.URI, ".md") || strings.HasSuffix(filepath.URI, ".markdown") {
source, err := ioutil.ReadFile(filepath.Absolute)
if err != nil {
responses.Error(w, r, "Couldn't read Markdown source!")
return
}
// Render it to HTML and find out its title.
body := string(source)
html := markdown.RenderTrustedMarkdown(body)
title, _ := markdown.TitleFromMarkdown(body)
render.Template(w, r, ".markdown", map[string]interface{}{
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"Title": title,
"HTML": template.HTML(html),
"MarkdownPath": filepath.URI,
})
return
}
http.ServeFile(w, r, filepath.Absolute)
}