mark2web/helper/template_functions.go

package helper

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
	"strings"

	"github.com/davecgh/go-spew/spew"
	"github.com/flosch/pongo2"
)

// RequestFn will make a web request and returns map[string]interface form pongo2
func RequestFn(url *pongo2.Value, args ...*pongo2.Value) *pongo2.Value {
	u := url.String()
	fmt.Printf("request GET %s\n", u)

	resp, err := http.Get(u)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}

	spew.Dump(string(body))

	if resp.StatusCode >= 400 {
		panic(resp.Status)
	}

	contentType := resp.Header.Get("Content-Type")

	if strings.Contains(contentType, "json") {

	} else {
		panic("invalid content-type")
	}

	jsonMap := make(map[string]interface{})
	err = json.Unmarshal(body, &jsonMap)
	if err != nil {
		panic(err)
	}

	return pongo2.AsValue(jsonMap)
}

// RenderFn renders a pongo2 template with additional context
func RenderFn(templateFilename, outDir, subCtxName, ctx *pongo2.Value) *pongo2.Value {
	currentContext[subCtxName.String()] = ctx
	result, err := RenderTemplate(templateFilename.String(), currentContext)
	if err != nil {
		panic(err)
	}

	result = FixAssetsPath(
		result,
		currentContext["CurrentPath"].(string),
	)
	spew.Dump(result)
	return pongo2.AsValue(nil)
}