package api

import (
	"encoding/json"
	"git.lumeweb.com/LumeWeb/gitea-github-proxy/config"
	"git.lumeweb.com/LumeWeb/gitea-github-proxy/db/model"
	"go.uber.org/zap"
	"gorm.io/gorm"
	"net/http"
	"net/url"
)

func newSettingsApi(cfg *config.Config, db *gorm.DB, logger *zap.Logger) *settingsApi {
	return &settingsApi{config: cfg, db: db, logger: logger}
}

func (s settingsApi) handlerNewApp(w http.ResponseWriter, r *http.Request) {
	manifestData := r.FormValue("manifest")

	var manifestObj manifest

	err := json.Unmarshal([]byte(manifestData), &manifestObj)
	if err != nil {
		http.Error(w, "Failed to parse manifest", http.StatusBadRequest)
		return
	}

	appData := newApp()

	appRecord := &model.Apps{
		Name:          manifestObj.Name,
		Url:           manifestObj.Url,
		WebhookUrl:    manifestObj.HookAttributes.URL,
		Code:          generateTempCode(),
		WebhookSecret: generateTempCode(),
		PrivateKey:    appData.PrivateKey,
	}

	tx := s.db.Create(appRecord)
	if tx.Error != nil {
		s.logger.Error("Error creating app", zap.Error(tx.Error))
		http.Error(w, "Error creating app", http.StatusInternalServerError)
		return
	}

	if len(manifestObj.RedirectURL) == 0 {
		s.logger.Error("Redirect URL is required")
		http.Error(w, "Redirect URL is required", http.StatusBadRequest)
		return
	}

	redirectUrl, err := url.Parse(manifestObj.RedirectURL)
	if err != nil {
		s.logger.Error("Error parsing redirect URL", zap.Error(err))
		http.Error(w, "Error parsing redirect URL", http.StatusInternalServerError)
		return
	}

	query := redirectUrl.Query()

	query.Add("code", appRecord.Code)

	if r.URL.Query().Get("state") != "" {
		query.Add("state", r.URL.Query().Get("state"))
	}

	redirectUrl.RawQuery = query.Encode()

	http.Redirect(w, r, redirectUrl.String(), http.StatusFound)

}

func setupSettingsRoutes(params RouteParams) {
	r := params.R

	settingsRouter := r.PathPrefix("/settings").Subrouter()
	settingsRouter.Use(giteaOauthVerifyMiddleware(params.Config))
	settingsRouter.Use(requireAuthMiddleware(params.Config))

	settingsApi := newSettingsApi(params.Config, params.Db, params.Logger)

	settingsRouter.HandleFunc("/apps/new", settingsApi.handlerNewApp).Methods("POST")
}