owl-blogs/user.go

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package owl
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import (
"fmt"
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"io/ioutil"
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"net/url"
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"os"
"path"
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"sort"
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"time"
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"gopkg.in/yaml.v2"
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)
type User struct {
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repo *Repository
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name string
}
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type UserConfig struct {
Title string `yaml:"title"`
SubTitle string `yaml:"subtitle"`
HeaderColor string `yaml:"header_color"`
TwitterHandle string `yaml:"twitter_handle"`
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}
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func (user User) Dir() string {
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return path.Join(user.repo.UsersDir(), user.name)
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}
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func (user User) UrlPath() string {
return user.repo.UserUrlPath(user)
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}
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func (user User) FullUrl() string {
url, _ := url.JoinPath(user.repo.FullUrl(), user.UrlPath())
return url
}
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func (user User) WebmentionUrl() string {
url, _ := url.JoinPath(user.FullUrl(), "webmention/")
return url
}
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func (user User) PostDir() string {
return path.Join(user.Dir(), "public")
}
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func (user User) MetaDir() string {
return path.Join(user.Dir(), "meta")
}
func (user User) ConfigFile() string {
return path.Join(user.MetaDir(), "config.yml")
}
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func (user User) Name() string {
return user.name
}
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func (user User) Posts() ([]*Post, error) {
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postFiles := listDir(path.Join(user.Dir(), "public"))
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posts := make([]*Post, 0)
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for _, id := range postFiles {
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// if is a directory and has index.md, add to posts
if dirExists(path.Join(user.Dir(), "public", id)) {
if fileExists(path.Join(user.Dir(), "public", id, "index.md")) {
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post, _ := user.GetPost(id)
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posts = append(posts, &post)
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}
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}
}
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// remove drafts
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n := 0
for _, post := range posts {
meta := post.Meta()
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if !meta.Draft {
posts[n] = post
n++
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}
}
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posts = posts[:n]
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type PostWithDate struct {
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post *Post
date time.Time
}
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postDates := make([]PostWithDate, len(posts))
for i, post := range posts {
meta := post.Meta()
date, err := time.Parse(time.RFC1123Z, meta.Date)
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if err != nil {
// invalid date -> use 1970-01-01
date = time.Time{}
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}
postDates[i] = PostWithDate{post: post, date: date}
}
// sort posts by date
sort.Slice(postDates, func(i, j int) bool {
return postDates[i].date.After(postDates[j].date)
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})
for i, post := range postDates {
posts[i] = post.post
}
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return posts, nil
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}
func (user User) GetPost(id string) (Post, error) {
// check if posts index.md exists
if !fileExists(path.Join(user.Dir(), "public", id, "index.md")) {
return Post{}, fmt.Errorf("post %s does not exist", id)
}
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post := Post{user: &user, id: id}
// post.loadMeta()
meta := post.Meta()
title := meta.Title
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post.title = fmt.Sprint(title)
return post, nil
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}
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func (user User) CreateNewPost(title string) (Post, error) {
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timestamp := time.Now().UTC().Unix()
folder_name := fmt.Sprintf("%d-%s", timestamp, title)
post_dir := path.Join(user.Dir(), "public", folder_name)
// if post already exists, add -n to the end of the name
i := 0
for {
if dirExists(post_dir) {
i++
folder_name = fmt.Sprintf("%d-%s-%d", timestamp, title, i)
post_dir = path.Join(user.Dir(), "public", folder_name)
} else {
break
}
}
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post := Post{user: &user, id: folder_name, title: title}
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initial_content := ""
initial_content += "---\n"
initial_content += "title: " + title + "\n"
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initial_content += "date: " + time.Now().UTC().Format(time.RFC1123Z) + "\n"
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initial_content += "---\n"
initial_content += "\n"
initial_content += "Write your post here.\n"
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// create post file
os.Mkdir(post_dir, 0755)
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os.WriteFile(post.ContentFile(), []byte(initial_content), 0644)
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// create media dir
os.Mkdir(post.MediaDir(), 0755)
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os.Mkdir(post.WebmentionDir(), 0755)
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return post, nil
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}
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func (user User) Template() (string, error) {
// load base.html
path := path.Join(user.Dir(), "meta", "base.html")
base_html, err := ioutil.ReadFile(path)
if err != nil {
return "", err
}
return string(base_html), nil
}
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func (user User) Config() (UserConfig, error) {
config_path := user.ConfigFile()
config_data, err := ioutil.ReadFile(config_path)
if err != nil {
return UserConfig{}, err
}
var meta UserConfig
err = yaml.Unmarshal(config_data, &meta)
if err != nil {
return UserConfig{}, err
}
return meta, nil
}
func (user User) SetConfig(new_config UserConfig) error {
config_path := user.ConfigFile()
config_data, err := yaml.Marshal(new_config)
if err != nil {
return err
}
err = ioutil.WriteFile(config_path, config_data, 0644)
if err != nil {
return err
}
return nil
}
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func (user User) PostAliases() (map[string]*Post, error) {
post_aliases := make(map[string]*Post)
posts, err := user.Posts()
if err != nil {
return post_aliases, err
}
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for _, post := range posts {
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if err != nil {
return post_aliases, err
}
for _, alias := range post.Aliases() {
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post_aliases[alias] = post
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}
}
return post_aliases, nil
}