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package templatemanager
import (
"bytes"
"fmt"
"html/template"
"path/filepath"
"strings"
)
type TemplateManager struct {
templates map[string]templateManagerRender
}
type templateManagerRender struct {
Main string
Tmpl *template.Template
}
type TemplateManagerTemplates struct {
Name string
Files []string
}
func NewTemplateManager(templates []TemplateManagerTemplates) (*TemplateManager, error) {
templateMap := make(map[string]templateManagerRender)
for _, tmplStruct := range templates {
tmpl := template.New("").Funcs(template.FuncMap{
"contains": strings.Contains,
})
tmpl, err := tmpl.ParseFiles(tmplStruct.Files...)
if err != nil {
return nil, err
}
templateMap[tmplStruct.Name] = templateManagerRender{
Main: filepath.Base(tmplStruct.Files[0]),
Tmpl: tmpl,
}
}
return &TemplateManager{
templates: templateMap,
}, nil
}
func (tm *TemplateManager) Render(name string, data interface{}) ([]byte, error) {
tmpl, exists := tm.templates[name]
if !exists {
return nil, fmt.Errorf("template %s is not found", name)
}
var buf bytes.Buffer
err := tmpl.Tmpl.ExecuteTemplate(&buf, tmpl.Main, data)
return buf.Bytes(), err
}
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