package static

import (
	"embed"
	"github.com/gin-gonic/gin"
	"html/template"
	"io/fs"
	"net/http"
	"strings"
)

var (
	//go:embed assets
	assetsFs embed.FS

	//go:embed view
	viewFs embed.FS
)

func LoadStatic(engine *gin.Engine) {
	sub, err := fs.Sub(assetsFs, "assets")
	if err != nil {
		panic(err)
	}

	cacheSuffix := []string{".css", ".js", ".js.map", ".css.map"}

	engine.Use(func(ctx *gin.Context) {
		if ctx.Request.Method == http.MethodGet {
			for _, suffix := range cacheSuffix {
				if strings.HasSuffix(ctx.Request.URL.Path, suffix) {
					ctx.Writer.Header().Set("Cache-Control", "max-age=7200")
					break
				}
			}
		}
		ctx.Next()
	})

	engine.StaticFS("/assets", http.FS(sub))
	engine.SetHTMLTemplate(template.Must(template.New("").ParseFS(viewFs, "view/*")))
}