package handlers

import (
	"net/http"

	"oidc-oauth2-server/services"

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

type RegistrationHandler struct {
	clientService *services.ClientService
}

func NewRegistrationHandler(clientService *services.ClientService) *RegistrationHandler {
	return &RegistrationHandler{
		clientService: clientService,
	}
}

// Register 处理动态客户端注册
func (h *RegistrationHandler) Register(c *gin.Context) {
	var req services.ClientRegistrationRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid_request", "error_description": err.Error()})
		return
	}

	client, err := h.clientService.RegisterClient(&req)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid_request", "error_description": err.Error()})
		return
	}

	c.JSON(http.StatusCreated, client)
}

// GetClient 获取客户端信息
func (h *RegistrationHandler) GetClient(c *gin.Context) {
	clientID := c.Param("client_id")
	client, err := h.clientService.GetClient(clientID)
	if err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "not_found"})
		return
	}

	c.JSON(http.StatusOK, client)
}

// UpdateClient 更新客户端信息
func (h *RegistrationHandler) UpdateClient(c *gin.Context) {
	clientID := c.Param("client_id")
	var req services.ClientRegistrationRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid_request"})
		return
	}

	client, err := h.clientService.UpdateClient(clientID, &req)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid_request"})
		return
	}

	c.JSON(http.StatusOK, client)
}

// DeleteClient 删除客户端
func (h *RegistrationHandler) DeleteClient(c *gin.Context) {
	clientID := c.Param("client_id")
	if err := h.clientService.DeleteClient(clientID); err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "not_found"})
		return
	}

	c.Status(http.StatusNoContent)
}