99 lines
2.5 KiB
Go
99 lines
2.5 KiB
Go
package api
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import (
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"encoding/hex"
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"hash/fnv"
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"html/template"
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"io"
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"net/http"
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"path"
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"github.com/Masterminds/sprig/v3"
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"github.com/julienschmidt/httprouter"
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log "github.com/sirupsen/logrus"
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"go.uber.org/multierr"
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"github.com/baez90/goveal/config"
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"github.com/baez90/goveal/fs"
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"github.com/baez90/goveal/rendering"
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"github.com/baez90/goveal/web"
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)
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var indexTmpl *template.Template
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func init() {
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if t, err := template.
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New("index").
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Funcs(sprig.FuncMap()).
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Funcs(map[string]any{
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"fileId": func(fileName string) string {
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h := fnv.New32a()
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return hex.EncodeToString(h.Sum([]byte(path.Base(fileName))))
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},
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}).
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ParseFS(web.WebFS, "*.gohtml"); err != nil {
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panic(err)
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} else {
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indexTmpl = t
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}
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}
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type Views struct {
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logger *log.Logger
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cfg *config.Components
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wdfs fs.FS
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mdFilepath string
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}
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func RegisterViews(router *httprouter.Router, logger *log.Logger, wdfs fs.FS, mdFilepath string, cfg *config.Components) {
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p := &Views{
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logger: logger,
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cfg: cfg,
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wdfs: wdfs,
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mdFilepath: mdFilepath,
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}
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router.GET("/", p.IndexPage)
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router.GET("/index.html", p.IndexPage)
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router.GET("/index.htm", p.IndexPage)
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router.GET("/slides", p.RenderedMarkdown)
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}
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func (p *Views) IndexPage(writer http.ResponseWriter, _ *http.Request, _ httprouter.Params) {
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writer.Header().Set("Content-Type", "text/html")
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if err := indexTmpl.ExecuteTemplate(writer, "index.gohtml", map[string]any{
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"Reveal": p.cfg.Reveal,
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"Rendering": p.cfg.Rendering,
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}); err != nil {
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p.logger.Errorf("Failed to render template: %v", err)
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writer.WriteHeader(http.StatusInternalServerError)
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_, _ = writer.Write([]byte(err.Error()))
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}
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}
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func (p *Views) RenderedMarkdown(writer http.ResponseWriter, _ *http.Request, _ httprouter.Params) {
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f, err := p.wdfs.Open(p.mdFilepath)
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if err != nil {
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writer.WriteHeader(http.StatusInternalServerError)
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_, _ = writer.Write([]byte(err.Error()))
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return
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}
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defer multierr.AppendInvoke(&err, multierr.Close(f))
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data, err := io.ReadAll(f)
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if err != nil {
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writer.WriteHeader(http.StatusInternalServerError)
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_, _ = writer.Write([]byte(err.Error()))
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return
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}
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writer.Header().Set("Content-Type", "text/html")
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var rendered []byte
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if rendered, err = rendering.ToHTML(string(data), p.cfg.Rendering); err != nil {
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writer.WriteHeader(http.StatusInternalServerError)
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_, _ = writer.Write([]byte(err.Error()))
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return
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} else if _, err = writer.Write(rendered); err != nil {
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writer.WriteHeader(http.StatusInternalServerError)
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_, _ = writer.Write([]byte(err.Error()))
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return
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}
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}
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