164 lines
3.7 KiB
Go
164 lines
3.7 KiB
Go
package site
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import (
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"errors"
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"fmt"
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"net/http"
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"net/url"
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"os"
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"path"
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"path/filepath"
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"strings"
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"ruben/inventory2/internal/domains/accounts"
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)
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// GET /
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func (s *Server) serveTemplates(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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name, pathParams := getPageTemplateNameForURL(r.URL)
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var (
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acct accounts.Account
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userID string
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)
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claims, ok := s.getAccessTokenClaims(r)
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if ok {
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userID = claims.Subject
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acct, _ = s.accts.GetAccountByUserID(ctx, userID)
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}
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b, err := s.templater.ExecutePage(
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name,
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"Request",
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r,
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// add services here
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"RawEvents",
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s.rawEvents.WithContext(ctx),
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"URLCalc",
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newURLCalculator(r.URL),
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"PathParams",
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pathParams,
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"Accounts",
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s.accts.WithContext(ctx),
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"Etsy",
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s.etsy.WithContext(ctx),
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// claims
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"Claims",
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claims,
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"UserID",
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userID,
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"Account",
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acct,
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)
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if err != nil {
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// TODO: handle 401
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// TODO: handle 403
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// TODO: handle 404
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if isFileNotFoundError(err) {
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}
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// TODO: handle 'not found' as a 404?
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fmt.Println("[ERROR]: failed to load or parse layout template:", err)
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http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
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return
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}
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w.Write(b)
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}
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func isFileNotFoundError(err error) bool {
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var pe *os.PathError
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isPathErr := errors.As(err, &pe)
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return isPathErr && pe.Err != nil && pe.Err.Error() == "no such file or directory"
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}
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// TODO: clean this up...
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// TODO: somehow tell what the path params are and pass them up.
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// - then consider pushing this functionality into the template library.
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//
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// getPageTemplateNameForURL eliminate any trailing .html or /, and checks for any
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// file with path parameters in the name, eg '{abc}.html.tmpl', prefering exact filename matches.
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func getPageTemplateNameForURL(u *url.URL) (name string, params map[string]string) {
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fp := strings.TrimPrefix(strings.TrimSuffix(strings.TrimSuffix(u.Path, ".html"), "/"), "/")
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if fp == "" {
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// "/" maps to "/index"
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fp = "index"
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}
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fpParts := strings.Split(fp, "/")
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res := getMatchingGlobPatternsCapturingFilepathIncludingParametrizedFilepaths(fpParts)
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for _, combs := range res {
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const pageBodiesPrefix = "internal/site/templates/page_bodies"
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pattern := path.Join(pageBodiesPrefix, path.Join(combs...)) + ".html.tmpl"
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matches, _ := filepath.Glob(pattern)
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if len(matches) == 0 {
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pattern := path.Join(pageBodiesPrefix, path.Join(combs...), "index") + ".html.tmpl"
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matches, _ = filepath.Glob(pattern)
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}
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if len(matches) > 0 {
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match := matches[0]
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name = strings.TrimPrefix(strings.TrimSuffix(match, ".html.tmpl"), pageBodiesPrefix+"/")
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patternParts := strings.Split(name, "/")
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params = make(map[string]string)
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for i, pp := range patternParts {
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if strings.HasPrefix(pp, "{") && strings.HasSuffix(pp, "}") {
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params[pp[1:len(pp)-1]] = fpParts[i]
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}
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}
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return name, params
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}
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}
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return fp, nil
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}
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func getMatchingGlobPatternsCapturingFilepathIncludingParametrizedFilepaths(filepathParts []string) [][]string {
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switch len(filepathParts) {
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case 0:
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return nil
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case 1:
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return [][]string{
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[]string{filepathParts[0]},
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[]string{"{*}"},
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}
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default:
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tailCombs := getMatchingGlobPatternsCapturingFilepathIncludingParametrizedFilepaths(filepathParts[1:])
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combs := make([][]string, 2*len(tailCombs))
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for i, c := range tailCombs {
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combs[i*2] = append([]string{filepathParts[0]}, c...)
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combs[i*2+1] = append([]string{"{*}"}, c...)
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}
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return combs
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}
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}
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type URLCalculator struct {
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url *url.URL
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}
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func newURLCalculator(u *url.URL) URLCalculator {
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cpy := *u
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return URLCalculator{
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url: &cpy,
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}
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}
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func (c URLCalculator) SetQueryParam(k string, v any) string {
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u := *c.url
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q := u.Query()
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q.Set(k, fmt.Sprint(v))
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u.RawQuery = q.Encode()
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return u.String()
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}
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