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path: root/routes.go
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package main

import (
	"context"
	"os"
	"strings"

	sr "tildegit.org/tjp/sliderule"
	"tildegit.org/tjp/sliderule/contrib/cgi"
	"tildegit.org/tjp/sliderule/contrib/fs"
	"tildegit.org/tjp/sliderule/contrib/tlsauth"
	"tildegit.org/tjp/sliderule/gemini"
)

func geminiRouter(conf config) sr.Handler {
	fsys := os.DirFS(conf.geminiRoot)

	router := &sr.Router{}

	router.Route(
		"/*",
		gemini.GeminiOnly(true)(sr.FallthroughHandler(
			fs.TitanUpload(tlsauth.Allow, conf.geminiRoot)(postUploadRedirect),
			fs.GeminiFileHandler(fsys),
			fs.GeminiDirectoryDefault(fsys, "index.gmi"),
			fs.GeminiDirectoryListing(fsys, nil),
		)),
	)

	router.Route(
		"/cgi-bin/*",
		gemini.GeminiOnly(false)(cgi.GeminiCGIDirectory("/cgi-bin/", "./cgi-bin/")),
	)

	return router.Handler()
}

var postUploadRedirect = sr.HandlerFunc(func(ctx context.Context, request *sr.Request) *sr.Response {
	u := *request.URL
	u.Path = strings.SplitN(u.Path, ";", 2)[0]
	u.Scheme = "gemini"
	return gemini.Redirect(u.String())
})