/*
Copyright © 2024 Laura Kalb <dev@lauka.net>
The code of this project is available under the MIT license. See the LICENSE file for more info.
*/
package webservice

import (
	"encoding/json"
	"io"
	"log"
	"net/http"
)

func codeLilaNetworkReleases(w http.ResponseWriter, r *http.Request) {
	namespace := r.URL.Query().Get("namespace")
	requestIp := r.Header.Get("X-Forwarded-For")
	userAgent := r.Header.Get("User-Agent")

	var releaseInfo forgejoRepoReleaseApiResponse

	if requestIp == "" {
		requestIp = r.RemoteAddr
	}

	enableCors(&w)

	if namespace == "" {
		http.Error(w, "400 Bad Request", http.StatusBadRequest)
		return
	}

	// Target website URL
	targetURL := "https://code.lila.network/api/v1/repos/" + namespace + "/releases/latest"

	// Make the request to the target website
	resp, err := http.Get(targetURL)
	if err != nil {
		log.Printf("Error fetching data from target website: %v", err)
		http.Error(w, "500 Internal Server Error", http.StatusInternalServerError)
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode != 200 {
		log.Printf("code.lila.network returned non-200 response: %v. Request-IP: %v, User-Agent: %v", resp.Status, requestIp, userAgent)
		http.Error(w, "500 Internal Server Error", http.StatusInternalServerError)
		return
	}

	// Read the response body
	body, err := io.ReadAll(resp.Body)
	if err != nil {
		log.Printf("Error reading response body: %v", err)
		http.Error(w, "500 Internal Server Error", http.StatusInternalServerError)
		return
	}

	err = json.Unmarshal(body, &releaseInfo)
	if err != nil {
		log.Printf("Error reading response body: %v", err)
		http.Error(w, "500 Internal Server Error", http.StatusInternalServerError)
		return
	}

	w.WriteHeader(http.StatusOK)
	w.Write([]byte(releaseInfo.TagName))
}

func Run() error {
	log.Println("starting webserver, listening on 0.0.0.0:8080")
	http.HandleFunc("/__version__", baseVersion)
	http.HandleFunc("/__heartbeat__", baseHeartbeat)
	http.HandleFunc("/__lbheartbeat__", baseHeartbeat)

	http.HandleFunc("/api/v1/code.lila.network/releases", codeLilaNetworkReleases)
	return http.ListenAndServe(":8080", nil)
}