83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
package templates
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// INFO: This will probably become a new lib in loreddev/x at some point
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import (
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"embed"
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"errors"
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"fmt"
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"html/template"
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"io"
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"io/fs"
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"code.capytal.cc/capytal/comicverse/internals/randname"
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)
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var (
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patterns = []string{"*.html", "layouts/*.html", "partials/*.html"}
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functions = template.FuncMap{
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"args": func(pairs ...any) (map[string]any, error) {
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if len(pairs)%2 != 0 {
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return nil, errors.New("misaligned map in template arguments")
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}
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m := make(map[string]any, len(pairs)/2)
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for i := 0; i < len(pairs); i += 2 {
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key, ok := pairs[i].(string)
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if !ok {
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return nil, fmt.Errorf("cannot use type %T as map key", pairs[i])
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}
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m[key] = pairs[i+1]
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}
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return m, nil
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},
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"randomName": func() string {
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return randname.New()
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},
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}
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)
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//go:embed *.html layouts/*.html partials/*.html
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var embedded embed.FS
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var temps = template.Must(template.New("templates").Funcs(functions).ParseFS(embedded, patterns...))
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func Templates() *template.Template {
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return temps // TODO: Support for local templates/hot-reloading without rebuild
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}
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func NewHotTemplates(fsys fs.FS) *HotTemplate {
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return &HotTemplate{
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fs: fsys,
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}
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}
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type HotTemplate struct {
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fs fs.FS
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template *template.Template
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}
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func (t *HotTemplate) Execute(wr io.Writer, data any) error {
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te, err := template.New("hot-templates").Funcs(functions).ParseFS(t.fs, patterns...)
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if err != nil {
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return err
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}
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return te.Execute(wr, data)
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}
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func (t *HotTemplate) ExecuteTemplate(wr io.Writer, name string, data any) error {
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te, err := template.New("hot-templates").Funcs(functions).ParseFS(t.fs, patterns...)
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if err != nil {
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return err
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}
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return te.ExecuteTemplate(wr, name, data)
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}
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type ITemplate interface {
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Execute(wr io.Writer, data any) error
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ExecuteTemplate(wr io.Writer, name string, data any) error
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}
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