package owl import ( "bytes" _ "embed" "html/template" "strings" ) type PageContent struct { Title string Description string Content template.HTML Type string SelfUrl string } type PostRenderData struct { Title string Post *Post Content template.HTML } type AuthRequestData struct { Me string ClientId string RedirectUri string State string Scope string Scopes []string // Split version of scope. filled by rendering function. ResponseType string CodeChallenge string CodeChallengeMethod string User User CsrfToken string } type EditorViewData struct { User User CsrfToken string } type ErrorMessage struct { Error string Message string } func noescape(str string) template.HTML { return template.HTML(str) } func listUrl(user User, id string) string { return user.ListUrl(PostList{ Id: id, }) } func postUrl(user User, id string) string { post, _ := user.GetPost(id) return post.UrlPath() } func renderEmbedTemplate(templateFile string, data interface{}) (string, error) { templateStr, err := embed_files.ReadFile(templateFile) if err != nil { return "", err } return renderTemplateStr(templateStr, data) } func renderTemplateStr(templateStr []byte, data interface{}) (string, error) { t, err := template.New("_").Funcs(template.FuncMap{ "noescape": noescape, "listUrl": listUrl, "postUrl": postUrl, }).Parse(string(templateStr)) if err != nil { return "", err } var html bytes.Buffer err = t.Execute(&html, data) if err != nil { return "", err } return html.String(), nil } func renderIntoBaseTemplate(user User, data PageContent) (string, error) { baseTemplate, _ := user.Template() t, err := template.New("index").Funcs(template.FuncMap{ "noescape": noescape, "listUrl": listUrl, "postUrl": postUrl, }).Parse(baseTemplate) if err != nil { return "", err } full_data := struct { Title string Description string Content template.HTML Type string SelfUrl string User User }{ Title: data.Title, Description: data.Description, Content: data.Content, Type: data.Type, SelfUrl: data.SelfUrl, User: user, } var html bytes.Buffer err = t.Execute(&html, full_data) return html.String(), err } func renderPostContent(post *Post) (string, error) { buf := post.RenderedContent() postHtml, err := renderEmbedTemplate("embed/post.html", PostRenderData{ Title: post.Title(), Post: post, Content: template.HTML(buf), }) return postHtml, err } func RenderPost(post *Post) (string, error) { postHtml, err := renderPostContent(post) if err != nil { return "", err } return renderIntoBaseTemplate(*post.user, PageContent{ Title: post.Title(), Description: post.Meta().Description, Content: template.HTML(postHtml), Type: "article", SelfUrl: post.FullUrl(), }) } func RenderIndexPage(user User) (string, error) { posts, _ := user.PrimaryFeedPosts() postHtml, err := renderEmbedTemplate("embed/post-list.html", posts) if err != nil { return "", err } return renderIntoBaseTemplate(user, PageContent{ Title: "Index", Content: template.HTML(postHtml), }) } func RenderPostList(user User, list *PostList) (string, error) { posts, _ := user.GetPostsOfList(*list) postHtml, err := renderEmbedTemplate("embed/post-list.html", posts) if err != nil { return "", err } return renderIntoBaseTemplate(user, PageContent{ Title: "Index", Content: template.HTML(postHtml), }) } func RenderUserAuthPage(reqData AuthRequestData) (string, error) { reqData.Scopes = strings.Split(reqData.Scope, " ") authHtml, err := renderEmbedTemplate("embed/auth.html", reqData) if err != nil { return "", err } return renderIntoBaseTemplate(reqData.User, PageContent{ Title: "Auth", Content: template.HTML(authHtml), }) } func RenderUserError(user User, error ErrorMessage) (string, error) { errHtml, err := renderEmbedTemplate("embed/error.html", error) if err != nil { return "", err } return renderIntoBaseTemplate(user, PageContent{ Title: "Error", Content: template.HTML(errHtml), }) } func RenderUserList(repo Repository) (string, error) { baseTemplate, _ := repo.Template() users, _ := repo.Users() userHtml, err := renderEmbedTemplate("embed/user-list.html", users) if err != nil { return "", err } data := PageContent{ Title: "Index", Content: template.HTML(userHtml), } return renderTemplateStr([]byte(baseTemplate), data) } func RenderLoginPage(user User, csrfToken string) (string, error) { loginHtml, err := renderEmbedTemplate("embed/editor/login.html", EditorViewData{ User: user, CsrfToken: csrfToken, }) if err != nil { return "", err } return renderIntoBaseTemplate(user, PageContent{ Title: "Login", Content: template.HTML(loginHtml), }) } func RenderEditorPage(user User, csrfToken string) (string, error) { editorHtml, err := renderEmbedTemplate("embed/editor/editor.html", EditorViewData{ User: user, CsrfToken: csrfToken, }) if err != nil { return "", err } return renderIntoBaseTemplate(user, PageContent{ Title: "Editor", Content: template.HTML(editorHtml), }) }