package render

import (
	"fmt"
	"log/slog"
	"net/http"
	"os"
	"text/template"

	settings "physick.ru/Settings"
)

const indexTemplateName string = "index.html"

func getTemplateString(templName string) (string, error) {
	var fullPath = fmt.Sprintf("%s/%s", settings.Current.TemplatesLocation, templName)
	var file, fopenerr = os.ReadFile(fullPath)
	if fopenerr != nil {
		return "", fopenerr
	}
	return string(file), nil
}

func executeIndexTemplate(content IndexTemplateContents, w http.ResponseWriter) {
	var indexTempl, readErr = getTemplateString(indexTemplateName)
	if readErr != nil {
		slog.Error("Failed to load template", slog.Any("Error", readErr))
		w.WriteHeader(http.StatusInternalServerError)
		return
	}
	var templ, templErr = template.New("index").Parse(indexTempl)
	if templErr != nil {
		slog.Error("Failed to parse the template", slog.Any("Error", templErr))
		w.WriteHeader(http.StatusInternalServerError)
		return
	}
	var err = templ.Execute(w, content) 
	if err != nil {
		slog.Error("Failed to execute the template", slog.Any("Error", err))
	}
}

func getTemplate(templName string) (string, error) {
	var fullPath = fmt.Sprintf("%s/%s", settings.Current.ArticlesLocation, templName)
	var file, fopenerr = os.ReadFile(fullPath)
	if fopenerr != nil {
		return "", fopenerr
	}
	return string(file), nil
}