71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
package frontend
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import (
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"embed"
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"io/fs"
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"net/http"
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"donetick.com/core/config"
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"github.com/gin-gonic/gin"
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)
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//go:embed dist
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var embeddedFiles embed.FS
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type Handler struct {
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ServeFrontend bool
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}
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func NewHandler(config *config.Config) *Handler {
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return &Handler{
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ServeFrontend: config.Server.ServeFrontend,
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}
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}
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func Routes(router *gin.Engine, h *Handler) {
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// this whole logic is walkaround for serving frontend files
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// TODO: figure out better way to improve it. main issue i run into is failing over to index.html when file does not exist
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if h.ServeFrontend {
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// if file exists in dist folder, serve it
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router.Use(staticMiddleware("dist"))
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// if file does not exist in dist folder fallback to index.html
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router.NoRoute(staticMiddlewareNoRoute("dist"))
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}
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}
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func staticMiddleware(root string) gin.HandlerFunc {
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fileServer := http.FileServer(getFileSystem(root))
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return func(c *gin.Context) {
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_, err := fs.Stat(embeddedFiles, "dist"+c.Request.URL.Path)
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if err != nil {
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c.Next()
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return
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}
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fileServer.ServeHTTP(c.Writer, c.Request)
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}
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}
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func staticMiddlewareNoRoute(root string) gin.HandlerFunc {
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fileServer := http.FileServer(getFileSystem(root))
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// always serve index.html for any route does not match:
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return func(c *gin.Context) {
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// Rewrite all requests to serve index.html
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c.Request.URL.Path = "/"
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fileServer.ServeHTTP(c.Writer, c.Request)
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}
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}
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func getFileSystem(path string) http.FileSystem {
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fs, err := fs.Sub(embeddedFiles, path)
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if err != nil {
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panic(err)
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}
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return http.FS(fs)
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}
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