package gitinstallation

import (
	"fmt"
	"net/http"

	"github.com/porter-dev/porter/api/server/handlers"
	"github.com/porter-dev/porter/api/server/shared"
	"github.com/porter-dev/porter/api/server/shared/apierrors"
	"github.com/porter-dev/porter/api/server/shared/config"
	"github.com/porter-dev/porter/api/types"
	"github.com/porter-dev/porter/internal/models"
	"github.com/porter-dev/porter/internal/models/integrations"
	"golang.org/x/oauth2"
)

type GithubAppOAuthCallbackHandler struct {
	handlers.PorterHandlerReadWriter
}

func NewGithubAppOAuthCallbackHandler(
	config *config.Config,
	decoderValidator shared.RequestDecoderValidator,
	writer shared.ResultWriter,
) *GithubAppOAuthCallbackHandler {
	return &GithubAppOAuthCallbackHandler{
		PorterHandlerReadWriter: handlers.NewDefaultPorterHandler(config, decoderValidator, writer),
	}
}

func (c *GithubAppOAuthCallbackHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	user, _ := r.Context().Value(types.UserScope).(*models.User)

	session, err := c.Config().Store.Get(r, c.Config().ServerConf.CookieName)

	if err != nil {
		c.HandleAPIError(w, r, apierrors.NewErrInternal(err))
		return
	}

	token, err := c.Config().GithubAppConf.Exchange(oauth2.NoContext, r.URL.Query().Get("code"))

	if err != nil || !token.Valid() {
		if session.Values["query_params"] != "" {
			http.Redirect(w, r, fmt.Sprintf("/dashboard?%s", session.Values["query_params"]), 302)
		} else {
			http.Redirect(w, r, "/dashboard", 302)
		}

		return
	}

	oauthInt := &integrations.GithubAppOAuthIntegration{
		SharedOAuthModel: integrations.SharedOAuthModel{
			AccessToken:  []byte(token.AccessToken),
			RefreshToken: []byte(token.RefreshToken),
			Expiry:       token.Expiry,
		},
		UserID: user.ID,
	}

	oauthInt, err = c.Repo().GithubAppOAuthIntegration().CreateGithubAppOAuthIntegration(oauthInt)

	if err != nil {
		c.HandleAPIError(w, r, apierrors.NewErrInternal(err))
		return
	}

	user.GithubAppIntegrationID = oauthInt.ID

	user, err = c.Repo().User().UpdateUser(user)

	if err != nil {
		c.HandleAPIError(w, r, apierrors.NewErrInternal(err))
		return
	}

	if session.Values["query_params"] != "" {
		http.Redirect(w, r, fmt.Sprintf("/dashboard?%s", session.Values["query_params"]), 302)
	} else {
		http.Redirect(w, r, "/dashboard", 302)
	}
}

// func (app *App) HandleGithubAppOAuthCallback(w http.ResponseWriter, r *http.Request) {
// 	session, err := app.Store.Get(r, app.ServerConf.CookieName)

// 	if err != nil {
// 		app.handleErrorDataRead(err, w)
// 		return
// 	}

// 	token, err := app.GithubAppConf.Exchange(oauth2.NoContext, r.URL.Query().Get("code"))

// 	if err != nil || !token.Valid() {
// 		if session.Values["query_params"] != "" {
// 			http.Redirect(w, r, fmt.Sprintf("/dashboard?%s", session.Values["query_params"]), 302)
// 		} else {
// 			http.Redirect(w, r, "/dashboard", 302)
// 		}
// 		return
// 	}

// 	fmt.Println("exchange happaned")
// 	fmt.Println(token.AccessToken)
// 	fmt.Println(token.RefreshToken)

// 	userID, err := app.getUserIDFromRequest(r)

// 	if err != nil {
// 		app.handleErrorInternal(err, w)
// 		return
// 	}

// 	user, err := app.Repo.User().ReadUser(userID)

// 	if err != nil {
// 		app.handleErrorInternal(err, w)
// 		return
// 	}

// 	oauthInt := &integrations.GithubAppOAuthIntegration{
// 		SharedOAuthModel: integrations.SharedOAuthModel{
// 			AccessToken:  []byte(token.AccessToken),
// 			RefreshToken: []byte(token.RefreshToken),
// 			Expiry:       token.Expiry,
// 		},
// 		UserID: user.ID,
// 	}

// 	oauthInt, err = app.Repo.GithubAppOAuthIntegration().CreateGithubAppOAuthIntegration(oauthInt)

// 	if err != nil {
// 		app.handleErrorInternal(err, w)
// 		return
// 	}

// 	user.GithubAppIntegrationID = oauthInt.ID

// 	user, err = app.Repo.User().UpdateUser(user)

// 	if err != nil {
// 		app.handleErrorInternal(err, w)
// 		return
// 	}

// 	if session.Values["query_params"] != "" {
// 		http.Redirect(w, r, fmt.Sprintf("/dashboard?%s", session.Values["query_params"]), 302)
// 	} else {
// 		http.Redirect(w, r, "/dashboard", 302)
// 	}
// }