package templatingimport (	"farga/config"	"farga/db/types"	"farga/lib/mime"	"html/template"	"io/fs"	"log"	"maps"	"net/http"	"path/filepath"	"strings"	"farga/lib"	"embed"	"github.com/gorilla/csrf")//go:embed viewsvar templatesFS embed.FSvar FuncMap = template.FuncMap{	"GetMime":     mime.Type,	"IsImage":     mime.IsImage,	"IsVideo":     mime.IsVideo,	"IsText":      mime.IsText,	"Src":         mime.Src,	"Str":         mime.ToStr,	"RepoRoot":    lib.RepoRoot,	"SizeOf":      lib.Size,	"SizeLen":     lib.SizeLen,	"IsRangeable": lib.IsRangeable,	"TruncateStr": lib.TruncateString,	"SplitLines":  lib.SplitLines,}func findAndParseTemplates(fsys fs.FS, root string, funcMap template.FuncMap) (*template.Template, error) {	rootTmpl := template.New("").Funcs(funcMap)	err := fs.WalkDir(fsys, root, func(path string, d fs.DirEntry, err error) error {		if err != nil {			return err		}		if d.IsDir() || !strings.HasSuffix(path, ".html") {			return nil		}		b, err := fs.ReadFile(fsys, path)		if err != nil {			return err		}		name := strings.TrimPrefix(path, root+"/")		_, err = rootTmpl.New(name).Parse(string(b))		return err	})	if err != nil {		return nil, err	}	return rootTmpl, nil}var templates *template.Templatefunc init() {	var err error	templates, err = findAndParseTemplates(templatesFS, ".", FuncMap)	if err != nil {		log.Fatal(err)	}}// Renders a template inside a given layout. You can also pass it any data.func Render(w http.ResponseWriter, r *http.Request, layout, page string, data ...any) {	var td = make(map[string]any)	if len(data) > 0 {		if m, ok := data[0].(map[string]any); ok {			maps.Copy(td, m)		} else {			// if data was something else, store it under "data"			td["data"] = data[0]		}	}	tmpl, err := templates.Clone()	if err != nil {		http.Error(w, err.Error(), http.StatusInternalServerError)		return	}	tmpl, err = tmpl.ParseFiles(filepath.Join("templating", "views", page+".html"))	if err != nil {		http.Error(w, err.Error(), http.StatusInternalServerError)		return	}	if v := r.Context().Value(lib.ErrorKey); v != nil {		td["error"] = v	}	if v := r.Context().Value(lib.MessageKey); v != nil {		if s, ok := v.(string); ok && s != "" {			td["message"] = s		}	}	user, ok := r.Context().Value(lib.UserKey).(*types.User)	if ok {		td["user"] = user		td["loggedIn"] = true	} else {		td["loggedIn"] = false // no user = not logged in.	}	td["sshDomain"] = config.C.Domain	td["sshPort"] = config.C.SSHPort	td["csrfField"] = csrf.TemplateField(r) // append {{ .csrfField }} to every form.	err = tmpl.ExecuteTemplate(w, layout, td)	if err != nil {		http.Error(w, err.Error(), http.StatusInternalServerError)	}}