package handlers

import (
	"CatsOfMastodonBotGo/internal/auth"
	"CatsOfMastodonBotGo/internal/config"
	"CatsOfMastodonBotGo/internal/web/dto"
	"net/http"

	"github.com/gin-gonic/gin"
)

type OauthLoginHandler struct {
	Jwt               auth.JwtTokenGenerator
	OauthLoginHandler *auth.GiteaOAuth2Handler
}

var OauthLoginHandlerInstance *OauthLoginHandler

func InitOauthLoginHandler() {
	OauthLoginHandlerInstance = &OauthLoginHandler{
		Jwt:               *auth.JwtTokenGeneratorInstance,
		OauthLoginHandler: auth.GiteaOauth2HandlerInstance,
	}
}

func (olh *OauthLoginHandler) GoToGiteaLogin(c *gin.Context) {
	redirectURL, _ := olh.OauthLoginHandler.GetGiteaLoginURL(c.Request.URL.Scheme + c.Request.Host)
	if redirectURL != "" {
		c.Redirect(http.StatusFound, redirectURL)
		return
	}

	c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get gitea login url"})

}

func (olh *OauthLoginHandler) LoginWithGitea(c *gin.Context) {

	var input dto.GiteaLoginInput
	if err := c.ShouldBindJSON(&input); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	userEmail, err := olh.OauthLoginHandler.GetGiteaUserEmailByCode(input.Code)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	for _, email := range config.Config.GiteaOauthAllowedEmails {
		if email == userEmail {
			token, err := olh.Jwt.GenerateToken(map[string]interface{}{"role": "admin"})
			if err != nil {
				c.JSON(http.StatusInternalServerError, gin.H{"error": "Token generation failed"})
				return
			}

			c.JSON(http.StatusOK, gin.H{"message": "Login successful", "token": token})
		} else {
			c.JSON(401, gin.H{
				"error": "oath login faied or yyour email does not have access",
			})
			return
		}
	}

}