package main

import (
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"os"
	"path/filepath"

	"imuslab.com/arozos/ReverseProxy/mod/utils"
)

func handleListCertificate(w http.ResponseWriter, r *http.Request) {
	filenames, err := tlsCertManager.ListCertDomains()
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	response, err := json.Marshal(filenames)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	w.Write(response)
}

//Handle upload of the certificate
func handleCertUpload(w http.ResponseWriter, r *http.Request) {
	// check if request method is POST
	if r.Method != "POST" {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	// get the key type
	keytype, err := utils.GetPara(r, "ktype")
	overWriteFilename := ""
	if err != nil {
		http.Error(w, "Not defined key type (pub / pri)", http.StatusBadRequest)
		return
	}

	// get the domain
	domain, err := utils.GetPara(r, "domain")
	if err != nil {
		//Assume localhost
		domain = "localhost"
	}

	if keytype == "pub" {
		overWriteFilename = domain + ".crt"
	} else if keytype == "pri" {
		overWriteFilename = domain + ".key"
	} else {
		http.Error(w, "Not supported keytype: "+keytype, http.StatusBadRequest)
		return
	}

	// parse multipart form data
	err = r.ParseMultipartForm(10 << 20) // 10 MB
	if err != nil {
		http.Error(w, "Failed to parse form data", http.StatusBadRequest)
		return
	}

	// get file from form data
	file, _, err := r.FormFile("file")
	if err != nil {
		http.Error(w, "Failed to get file", http.StatusBadRequest)
		return
	}
	defer file.Close()

	// create file in upload directory
	os.MkdirAll("./certs", 0775)
	f, err := os.Create(filepath.Join("./certs", overWriteFilename))
	if err != nil {
		http.Error(w, "Failed to create file", http.StatusInternalServerError)
		return
	}
	defer f.Close()

	// copy file contents to destination file
	_, err = io.Copy(f, file)
	if err != nil {
		http.Error(w, "Failed to save file", http.StatusInternalServerError)
		return
	}

	// send response
	fmt.Fprintln(w, "File upload successful!")
}