package handler

import (
	"net/http"

	"giter.top/smart/internal/iam/service"
	"github.com/gin-gonic/gin"
)

type RoleHandler struct {
	svc service.RoleService
}

func NewRoleHandler(svc service.RoleService) *RoleHandler {
	return &RoleHandler{svc: svc}
}

func (h *RoleHandler) Create(c *gin.Context) {
	tid := headerTenantID(c)
	var req service.CreateRoleRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	role, err := h.svc.Create(c.Request.Context(), tid, &req, headerGrantorUserID(c))
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusCreated, role)
}

func (h *RoleHandler) Update(c *gin.Context) {
	tid := headerTenantID(c)
	rid := c.Param("id")
	if rid == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
		return
	}
	var req service.UpdateRoleRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	r, err := h.svc.Update(c.Request.Context(), tid, rid, &req, headerGrantorUserID(c))
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, r)
}

func (h *RoleHandler) Delete(c *gin.Context) {
	tid := headerTenantID(c)
	var ids []string
	if err := c.ShouldBindJSON(&ids); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	if err := h.svc.Delete(c.Request.Context(), tid, ids); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.Status(http.StatusNoContent)
}

func (h *RoleHandler) Get(c *gin.Context) {
	tid := headerTenantID(c)
	rid := c.Param("id")
	if rid == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
		return
	}
	r, err := h.svc.Get(c.Request.Context(), tid, rid)
	if err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, r)
}

func (h *RoleHandler) List(c *gin.Context) {
	tid := headerTenantID(c)
	name := c.Query("name")
	code := c.Query("code")
	page := atoiDef(c.Query("page"), 1)
	pageSize := atoiDef(c.Query("page_size"), 10)
	resp, err := h.svc.List(c.Request.Context(), tid, name, code, page, pageSize)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, resp)
}

type assignMenusBody struct {
	MenuIDs []string `json:"menu_ids"`
}

func (h *RoleHandler) AssignMenus(c *gin.Context) {
	tid := headerTenantID(c)
	rid := c.Param("id")
	if rid == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid id"})
		return
	}
	var body assignMenusBody
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	if err := h.svc.AssignMenus(c.Request.Context(), tid, rid, body.MenuIDs, headerGrantorUserID(c)); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.Status(http.StatusNoContent)
}