hatecomputers.club/api/template.go

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package api
import (
"bytes"
"errors"
"html/template"
"log"
"net/http"
"os"
)
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func renderTemplate(context *RequestContext, templateName string, showBaseHtml bool) (bytes.Buffer, error) {
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templatePath := context.Args.TemplatePath
basePath := templatePath + "/base_empty.html"
if showBaseHtml {
basePath = templatePath + "/base.html"
}
templateLocation := templatePath + "/" + templateName
tmpl, err := template.New("").ParseFiles(templateLocation, basePath)
if err != nil {
return bytes.Buffer{}, err
}
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dataPtr := context.TemplateData
if dataPtr == nil {
dataPtr = &map[string]interface{}{}
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}
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data := *dataPtr
if data["User"] == nil {
data["User"] = context.User
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}
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var buffer bytes.Buffer
err = tmpl.ExecuteTemplate(&buffer, "base", data)
if err != nil {
return bytes.Buffer{}, err
}
return buffer, nil
}
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func TemplateContinuation(path string, showBase bool) Continuation {
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return func(context *RequestContext, req *http.Request, resp http.ResponseWriter) ContinuationChain {
return func(success Continuation, failure Continuation) ContinuationChain {
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html, err := renderTemplate(context, path, true)
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if errors.Is(err, os.ErrNotExist) {
resp.WriteHeader(404)
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html, err = renderTemplate(context, "404.html", true)
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if err != nil {
log.Println("error rendering 404 template", err)
resp.WriteHeader(500)
return failure(context, req, resp)
}
resp.Header().Set("Content-Type", "text/html")
resp.Write(html.Bytes())
return failure(context, req, resp)
}
if err != nil {
log.Println("error rendering template", err)
resp.WriteHeader(500)
resp.Write([]byte("error rendering template"))
return failure(context, req, resp)
}
resp.Header().Set("Content-Type", "text/html")
resp.Write(html.Bytes())
return success(context, req, resp)
}
}
}