woj-server/internal/api/oauth/login.go

package oauth

import (
	"context"
	"fmt"
	"git.0x7f.app/WOJ/woj-server/internal/e"
	"git.0x7f.app/WOJ/woj-server/pkg/utils"
	"github.com/gin-gonic/gin"
	"net/http"
)

// LoginHandler
// @Summary     Login with OAuth2
// @Description Get OAuth2 Login URL
// @Tags        oauth
// @Produce     json
// @Response    200 {object} e.Response[string] "random string"
// @Router      /oauth/login [post]
func (h *handler) LoginHandler() gin.HandlerFunc {
	return func(c *gin.Context) {
		state := utils.RandomString(64)
		key := utils.RandomString(16)

		err := h.cache.Get().Set(context.Background(), fmt.Sprintf(oauthStateKey, key), state, oauthStateLiveness).Err()
		if err != nil {
			e.Pong[any](c, e.RedisError, nil)
			return
		}

		c.SetSameSite(http.SameSiteStrictMode)
		c.SetCookie(oauthStateCookieName, key, int(oauthStateLiveness.Seconds()), "/", "", false, true)

		url := h.conf.AuthCodeURL(state)
		e.Pong(c, e.Success, url)
	}
}