backend/internal/handlers/auth.go

package handlers

import (
	"net/http"

	"fastfileviewer/backend/internal/config"
	"fastfileviewer/backend/internal/middleware"
	"github.com/gin-gonic/gin"
)

type AuthHandler struct {
	cfg config.Config
}

func NewAuthHandler(cfg config.Config) *AuthHandler {
	return &AuthHandler{cfg: cfg}
}

type loginRequest struct {
	Password string `json:"password"`
}

func (h *AuthHandler) Login(ctx *gin.Context) {
	var req loginRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		ctx.JSON(http.StatusBadRequest, gin.H{"error": "invalid body"})
		return
	}
	if req.Password != h.cfg.AdminPassword {
		ctx.JSON(http.StatusUnauthorized, gin.H{"error": "invalid credentials"})
		return
	}

	token, err := middleware.IssueToken(h.cfg.JWTSecret, h.cfg.TokenTTL)
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "failed to issue token"})
		return
	}
	ctx.JSON(http.StatusOK, gin.H{"token": token})
}