package handlers

import (
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/tradarr/backend/internal/auth"
	"github.com/tradarr/backend/internal/httputil"
	"github.com/tradarr/backend/internal/models"
)

type loginRequest struct {
	Email    string `json:"email" binding:"required,email"`
	Password string `json:"password" binding:"required"`
}

type registerRequest struct {
	Email    string `json:"email" binding:"required,email"`
	Password string `json:"password" binding:"required,min=6"`
}

func (h *Handler) Login(c *gin.Context) {
	var req loginRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		httputil.BadRequest(c, err)
		return
	}
	user, err := h.repo.GetUserByEmail(req.Email)
	if err != nil || user == nil || !auth.CheckPassword(user.PasswordHash, req.Password) {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid credentials"})
		return
	}
	token, err := auth.GenerateToken(user.ID, user.Email, string(user.Role), h.cfg.JWTSecret)
	if err != nil {
		httputil.InternalError(c, err)
		return
	}
	httputil.OK(c, gin.H{"token": token, "user": user})
}

func (h *Handler) Register(c *gin.Context) {
	var req registerRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		httputil.BadRequest(c, err)
		return
	}
	existing, _ := h.repo.GetUserByEmail(req.Email)
	if existing != nil {
		c.JSON(http.StatusConflict, gin.H{"error": "email already in use"})
		return
	}
	hash, err := auth.HashPassword(req.Password)
	if err != nil {
		httputil.InternalError(c, err)
		return
	}
	user, err := h.repo.CreateUser(req.Email, hash, models.RoleUser)
	if err != nil {
		httputil.InternalError(c, err)
		return
	}
	token, _ := auth.GenerateToken(user.ID, user.Email, string(user.Role), h.cfg.JWTSecret)
	httputil.Created(c, gin.H{"token": token, "user": user})
}