package main

import (
	"net/http"
	"path/filepath"
	"text/template"
	"time"
)

type templateData struct {
    CurrentYear int
    Feeds       []string
    Title       string
    Errors      map[string]string
}

func newTemplateCache() (map[string]*template.Template, error) {
    cache := map[string]*template.Template{}

    pages, err := filepath.Glob("./ui/html/pages/*.tmpl.html")
    if err != nil {
        return nil, err
    }
    for _, page := range pages {
        name := filepath.Base(page)

        ts, err := template.ParseFiles("./ui/html/base.tmpl.html")
        if err != nil {
            return nil, err
        }

        // parse all partials into the template set
        ts, err = ts.ParseGlob("./ui/html/partials/*.tmpl.html")
        if err != nil {
            return nil, err
        }

        // parse the page template last
        ts, err = ts.ParseFiles(page)
        if err != nil {
            return nil, err
        }

        cache[name] = ts
    }

    // htmx elements should just be raw html, so we parse those separately
    hxElems, err := filepath.Glob("./ui/html/htmx/*.tmpl.html")
    if err != nil {
        return nil, err
    }
    for _, hxElem := range hxElems {
        name := filepath.Base(hxElem)

        ts, err := template.ParseFiles(hxElem)
        if err != nil {
            return nil, err
        }

        cache[name] = ts
    }

    return cache, nil
}

func newTemplateData(r *http.Request) *templateData {
    return &templateData{
        CurrentYear: time.Now().Year(),
    }
}