photos/cmd/web/templates.go

package main

import (
	"html/template"
	"strings"

	lib "git.makerforce.io/photos/photos/pkg/bucket"
)

var funcs = template.FuncMap{
	"ar":      func(p Photo) float64 { return float64(p.Width) / float64(p.Height) },
	"mul":     func(a, b float64) float64 { return a * b },
	"photo":   photo,
	"preview": preview,
}

type IndexTemplateData struct {
	Assets   string
	Metadata lib.BucketMetadata
	Photos   []Photo
}

type Photo struct {
	lib.Photo
	lib.PhotoMetadata
}

var indexTemplate = mustTemplateAsset("index")

func mustTemplateAsset(name string) *template.Template {
	buf, err := Asset("view/" + name + ".tmpl")
	if err != nil {
		panic(err)
	}
	return template.Must(
		template.New(name).Funcs(funcs).Parse(string(buf)),
	)
}

func photo(p Photo) template.URL {
	return template.URL(p.Path())
}

func preview(p Photo, height int, format lib.PhotoFormat, quality int) template.Srcset {
	preview := p.GetPreview(lib.PreviewOption{
		Height:  height,
		Format:  format,
		Quality: quality,
	})
	path := strings.ReplaceAll(preview.Path(), ",", "%2C")
	return template.Srcset(path)
}