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104 lines
2.3 KiB
Go

package operation
import (
"fmt"
goHtmlTemplate "html/template"
"log"
"mime"
"path/filepath"
"strings"
"github.com/aziis98/cabret"
"github.com/aziis98/cabret/operation/template"
"github.com/aziis98/cabret/util"
)
var HtmlMimeType = mime.TypeByExtension(".html")
func init() {
registerType("layout", &Layout{})
}
type Layout struct {
// TemplatePatterns is a list of glob patterns of templates that will be loaded
TemplatePatterns []string
}
func (op *Layout) Load(config map[string]any) error {
if v, ok := config[ShortFormValueKey]; ok {
globPatternsStr, ok := v.(string)
if !ok {
return fmt.Errorf(`expected a comma separated list of glob patterns but got "%v" of type %T`, v, v)
}
globPatterns := strings.Split(globPatternsStr, ",")
for _, pat := range globPatterns {
op.TemplatePatterns = append(op.TemplatePatterns, strings.TrimSpace(pat))
}
return nil
}
if v, ok := config["paths"]; ok {
globPatterns, ok := v.([]string)
if !ok {
return fmt.Errorf(`expected a list of glob patterns but got "%v" of type %T`, v, v)
}
for _, pat := range globPatterns {
op.TemplatePatterns = append(op.TemplatePatterns, strings.TrimSpace(pat))
}
return nil
}
if v, ok := config["path"]; ok {
globPatternStr, ok := v.(string)
if !ok {
return fmt.Errorf(`expected a glob pattern but got "%v" of type %T`, v, v)
}
op.TemplatePatterns = []string{strings.TrimSpace(globPatternStr)}
return nil
}
return fmt.Errorf(`invalid config`)
}
func (op Layout) ProcessItem(content cabret.Content) (*cabret.Content, error) {
// expand glob patterns
tmplFiles := []string{}
for _, pat := range op.TemplatePatterns {
files, err := filepath.Glob(strings.TrimSpace(pat))
if err != nil {
return nil, err
}
tmplFiles = append(tmplFiles, files...)
}
// create template
tmpl, err := template.ParseFiles(tmplFiles...)
if err != nil {
return nil, err
}
ctx := util.CloneMap(content.Metadata)
if content.Type == HtmlMimeType {
ctx["Content"] = goHtmlTemplate.HTML(content.Data)
} else {
ctx["Content"] = content.Data
}
log.Printf(`[operation.Layout] rendering into layout "%s"`, strings.Join(op.TemplatePatterns, ", "))
data, err := tmpl.Render(ctx)
if err != nil {
return nil, err
}
content.Type = mime.TypeByExtension(filepath.Ext(tmplFiles[0]))
content.Data = data
return &content, nil
}