filebrowser/directory/update.go
Henrique Dias ebfe0f8e89 updates
2016-06-28 10:24:02 +01:00

131 lines
3.0 KiB
Go

package directory
import (
"bytes"
"encoding/json"
"errors"
"io/ioutil"
"net/http"
"path/filepath"
"strings"
"github.com/hacdias/caddy-filemanager/config"
"github.com/spf13/hugo/parser"
)
// Update is used to update a file that was edited
func (i *Info) Update(w http.ResponseWriter, r *http.Request, c *config.Config) (int, error) {
var data map[string]interface{}
kind := r.Header.Get("kind")
if kind == "" {
return http.StatusBadRequest, nil
}
// Get the JSON information
rawBuffer := new(bytes.Buffer)
rawBuffer.ReadFrom(r.Body)
err := json.Unmarshal(rawBuffer.Bytes(), &data)
if err != nil {
return http.StatusInternalServerError, err
}
var file []byte
var code int
switch kind {
case "frontmatter-only":
if file, code, err = parseFrontMatterOnlyFile(data, i.Name); err != nil {
return http.StatusInternalServerError, err
}
case "content-only":
mainContent := data["content"].(string)
mainContent = strings.TrimSpace(mainContent)
file = []byte(mainContent)
case "complete":
if file, code, err = parseCompleteFile(data, i.Name); err != nil {
return http.StatusInternalServerError, err
}
default:
return http.StatusBadRequest, nil
}
// Write the file
err = ioutil.WriteFile(i.Path, file, 0666)
if err != nil {
return http.StatusInternalServerError, err
}
return code, nil
}
func parseFrontMatterOnlyFile(data interface{}, filename string) ([]byte, int, error) {
frontmatter := strings.TrimPrefix(filepath.Ext(filename), ".")
var mark rune
switch frontmatter {
case "toml":
mark = rune('+')
case "json":
mark = rune('{')
case "yaml":
mark = rune('-')
default:
return []byte{}, http.StatusBadRequest, errors.New("Can't define the frontmatter.")
}
f, err := parser.InterfaceToFrontMatter(data, mark)
fString := string(f)
// If it's toml or yaml, strip frontmatter identifier
if frontmatter == "toml" {
fString = strings.TrimSuffix(fString, "+++\n")
fString = strings.TrimPrefix(fString, "+++\n")
}
if frontmatter == "yaml" {
fString = strings.TrimSuffix(fString, "---\n")
fString = strings.TrimPrefix(fString, "---\n")
}
f = []byte(fString)
if err != nil {
return []byte{}, http.StatusInternalServerError, err
}
return f, http.StatusOK, nil
}
func parseCompleteFile(data map[string]interface{}, filename string) ([]byte, int, error) {
// The main content of the file
mainContent := data["content"].(string)
mainContent = "\n\n" + strings.TrimSpace(mainContent) + "\n"
// Removes the main content from the rest of the frontmatter
delete(data, "content")
if _, ok := data["date"]; ok {
data["date"] = data["date"].(string) + ":00"
}
// Converts the frontmatter in JSON
jsonFrontmatter, err := json.Marshal(data)
if err != nil {
return []byte{}, http.StatusInternalServerError, err
}
// Indents the json
frontMatterBuffer := new(bytes.Buffer)
json.Indent(frontMatterBuffer, jsonFrontmatter, "", " ")
// Generates the final file
f := new(bytes.Buffer)
f.Write(frontMatterBuffer.Bytes())
f.Write([]byte(mainContent))
return f.Bytes(), http.StatusOK, nil
}