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|
package page
import (
"bytes"
"encoding/json"
"errors"
"io/fs"
"net/http"
)
// RenderJSON is analogous to Render, though it renders the page,
// as a JSON key "content", optionally from the YAML it'll include
// additional keys in the json if specified under the 'pageJson' key.
// E.g.
//
// ---
// title: Some page
// description: Some page desc
// jsonvars:
// - includeMeInJSON
// vars:
// notIncluded: some value
// includeMeInJSON:
// some: arbitrary
// data: to
// send: down
// |--
// My page content, wee!
func RenderJSON(w http.ResponseWriter, r *http.Request, //nolint:funlen
path string, vars map[string]interface{}, statusCode int) {
// Sepcifically use the specified path for the page
p := NewPage(path)
if vars != nil {
p.Vars = vars
}
out := map[string]interface{}{}
buf := &bytes.Buffer{}
err := p.Render(buf)
if err != nil {
if errors.Is(err, fs.ErrNotExist) {
renderJSONErr(w, "Not found", http.StatusNotFound)
return
}
logErr(r, "rendering JSON encountered", err)
renderJSONErr(w, "Internal server error",
http.StatusInternalServerError)
return
}
if r.URL.Query().Get("content") == "1" {
out["Content"] = buf.String()
}
if r.URL.Query().Get("markdown") == "1" {
p.setRenderingMarkdownOnly()
// Tossing the error, since it would've been revealed above
md, _ := p.GetMarkdown()
out["Markdown"] = md
}
// Make a "set" of keys
keys := map[string]struct{}{}
for _, k := range p.JSONVars {
keys[k] = struct{}{}
}
// And chuck the keys specified into the output
for k, v := range p.Vars {
_, ok := keys[k]
if ok {
out[k] = v
}
}
w.WriteHeader(statusCode)
enc := json.NewEncoder(w)
enc.SetIndent("", " ")
enc.SetEscapeHTML(false)
err = enc.Encode(out)
if err != nil {
logErr(r, "while writing to buf", err)
return
}
logReq(r, statusCode)
}
func renderJSONErr(w http.ResponseWriter, msg string, statusCode int) {
enc := json.NewEncoder(w)
w.WriteHeader(statusCode)
_ = enc.Encode(&struct {
StatusCode int
Msg string
}{
StatusCode: statusCode,
Msg: msg,
})
}
|
